TAGA Atsushi

Researcher Information

Degree

• (BLANK)（Kinki University）
• (BLANK)（Osaka University）

J-Global ID

• 200901064159742411

Research Interests

• 分析化学   Analytical Chemistry   

Research Areas

• Life sciences / Pharmaceuticals - analytical and physicochemistry

Education

•        - 1992  Kindai University  Graduate School of Pharmacy  薬品分析学
•        - 1992  Kinki University  Graduate School, Division of Pharmaceutical Sciences
•        - 1990  Kindai University  Faculty of Pharmacy  Department of Pharmacy
•        - 1990  Kinki University  Faculty of Pharmaceutical Science

Association Memberships

• 日本油化学会   日本糖質学会   日本薬学会   クロマドグラフィー科学会   日本糖質学会   クロマトグラフィー科学会   日本薬学会   

Published Papers

• Protein components of maple syrup as a potential resource for the development of novel anti‑colorectal cancer drugs.

  Tetsushi Yamamoto; Ryota Shiburo; Yoshie Moriyama; Kuniko Mitamura; Atsushi Taga

  Oncology reports 50 (4) 2023/10 

  Maple syrup is a natural sweetener consumed worldwide. Active ingredients of maple syrup possess antitumor effects; however, these ingredients are phenolic compounds. The present study aimed to investigate components other than phenolic compounds that may have antitumor effects against colorectal cancer (CRC). Cell proliferation assays demonstrated that treatment with the more than 10,000 molecular weight fraction significantly inhibited viability in DLD‑1 cells. Therefore, we hypothesized that the protein components of maple syrup may be the active ingredients in maple syrup. We obtained protein components from maple syrup by ammonium sulfate precipitation, and treatment with the protein fraction of maple syrup (MSpf) was found to exhibit a potential antitumor effect. MSpf‑treated DLD‑1 colon adenocarcinoma cells exhibited significantly decreased proliferation, migration and invasion. In addition, upregulation of LC3A and E‑cadherin and downregulation of MMP‑9 expression levels were observed following MSpf treatment. Investigation of the components of MSpf suggested that it was primarily formed of advanced glycation end products (AGEs). Therefore, whether AGEs in MSpf affected the STAT3 pathway through the binding to its receptor, receptor of AGE (RAGE), was assessed. MSpf treatment was associated with decreased RAGE expression and STAT3 phosphorylation. Finally, to determine whether autophagy contributed to the inhibitory effect of cell proliferation following MSpf treatment, the effect of MSpf treatment on autophagy induction following bafilomycin A1 treatment, a specific autophagy inhibitor, was assessed. The inhibitory effect of MSpf treatment on cell proliferation was enhanced through the inhibition of autophagy by bafilomycin A1 treatment. These results suggested that AGEs in MSpf suppressed cell proliferation and epithelial‑mesenchymal transition through inhibition of the STAT3 signaling pathway through decreased RAGE expression. Therefore, AGEs in MSpf may be potential compounds for the development of antitumor drugs for the treatment of CRC with fewer adverse effects compared with existing antitumor drugs.
• Correction: Sato et al. Separation of Fructosyl Oligosaccharides in Maple Syrup by Using Charged Aerosol Detection. Foods 2021, 10, 3160.

  Kanta Sato; Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  Foods (Basel, Switzerland) 12 (11) 2023/05 

  In the original publication [...].
• Direct chiral separation of abscisic acid by high‐performance liquid chromatography with a phenyl column and a mobile phase containing γ‐cyclodextrin

  Hiroyuki Terashima; Yui Mutoh; Sen‐ichi Aizawa; Atsushi Taga; Ikko Mikami; Yutaka Itabashi; Kaname Tsutsumiuchi; Atsushi Yamamoto; Shuji Kodama

  Journal of Separation Science Wiley 46 (6) e2200827  1615-9306 2023/01 

  Abscisic acid (2-cis,4-trans-abscisic acid) is a plant hormone that has an asymmetric carbon atom. We tried to separate the enantiomers of native abscisic acid by HPLC using a phenyl column and a chiral mobile phase containing γ-cyclodextrin. The optimum mobile phase conditions were found to be 0.8% (w/v) γ-cyclodextrin, 4% (v/v) acetonitrile, and 20 mM phosphate buffer (pH 6.0). It was found that (R)-abscisic acid was earlier detected than (S)-abscisic acid. Since γ-cyclodextrin is hardly retained on a phenyl column, it was suggested that (R)-abscisic acid formed a more stable complex with γ-cyclodextrin than the (S)-abscisic acid. Abscisic acid in an acacia honey sample was successfully enantioseparated with the proposed method and only (S)-abscisic acid was detected. A biologically inactive 2-trans,4-trans-abscisic acid, which was prepared by irradiation of abscisic acid with a light-emitting diode lamp at 365 nm, was partially enantioseparated by the proposed method. Since the irradiation of (S)-abscisic acid-induced cis-to-trans isomerization to produce one 2-trans,4-trans-abscisic acid enantiomer, it is reasonable that racemization did not proceed during the cis-to-trans isomerization. (S)-Abscisic acid and probably (S)-2-trans,4-trans-abscisic acid were detected in a honey sample, where the peak area of (S)-abscisic acid was 7 times larger than that of (S)-2-trans,4-trans-abscisic acid.
• Poly(oxyethylene)/Poly(oxypropylene) butyl ether prolongs the repellent effect of N,N-diethyl-3-toluamide on the skin.

  Mayu Kawaguchi; Kana Matsumoto; Joji Yoshitomi; Hiroko Otake; Kanta Sato; Atsushi Taga; Tatsuji Sasabe; Kenji Nobuhara; Akira Matsubara; Noriaki Nagai

  PloS one 18 (10) e0292447  2023 

  N,N-diethyl-meta-toluamide (DEET) is a widely used insect repellent, with minimal skin permeation and sustained repellent activity in the superficial layers of the skin. In this study, we prepared a 10% DEET formulation consisting of 40% ethanol with or without 2% poly(oxyethylene)/poly(oxypropylene) butyl ether (POE-POP), an amphiphilic random copolymer. Further, we demonstrated the effects of POE-POP on tensile stress (stickiness), hydrophobicity, skin retention, permeation, and repellent activity of DEET. Stickiness was measured in male ICR mice (7-week old), and skin retention and permeation were evaluated in male Wistar rats (7-week old). In addition, female Aedes albopictus were used to measure the repellent action of DEET. The addition of POE-POP did not affect stickiness, volatility, and degradability but decreased logP and increased viscosity of DEET. Next, we demonstrated the behavior of DEET formulations in the rat skin. POE-POP prolonged the retention of DEET in the superficial layers of the rat skin (skin surface and stratum corneum) and decreased the penetration of DEET into rat skin tissues (epithelium and dermis). The repellent effect of DEET was also enhanced by the addition of POE-POP. However, severe skin damage was not observed after repetitive treatment with DEET formulations containing POE-POP for one month (twice a day). In conclusion, we demonstrated that a 10% DEET formulation consisting of 40% ethanol and 2% POE-POP attenuated the skin penetration and prolonged the repellent action of DEET without causing stickiness and skin damage. We conclude that the combination of ethanol and POE-POP is useful as a safe and effective delivery system for the development of insect repellent formulations containing DEET.
• 大腸癌に対するメープルシロップに含まれるタンパク質画分による抗腫瘍効果の検討(The effect of protein component in maple syrup as a resource to development pharmaceutical drug for colorectal cancer.)

  山本 哲志; 三田村 邦子; 多賀 淳

  日本癌学会総会記事 (一社)日本癌学会 81回 P - 2274 0546-0476 2022/09
• Combination of Lanosterol and Nilvadipine Nanosuspensions Rescues Lens Opacification in Selenite-Induced Cataractic Rats.

  Saori Deguchi; Reita Kadowaki; Hiroko Otake; Atsushi Taga; Yosuke Nakazawa; Manju Misra; Naoki Yamamoto; Hiroshi Sasaki; Noriaki Nagai

  Pharmaceutics 14 (7) 2022/07 

  It has recently been reported that lanosterol (LAN) plays a preventive role against lens opacification through the reversal of crystalline aggregation. However, the effect of LAN is not sufficient to restore lens transparency. In this study, we designed ophthalmic nanosuspensions (LAN-ONSs and NIL-ONSs) based on LAN and nilvadipine (NIL), which can counteract cataract-related factors (e.g., enhanced Ca2+ and calpain levels), and investigated whether the combination of LAN-ONSs and NIL-ONSs can restore the nuclear lens opacity in sodium-selenite-induced cataractic rats (cataractic rats). The mean particle sizes of the LAN-ONSs and NIL-ONSs were 108.8 nm and 89.0 nm, respectively. The instillation of the LAN-ONSs or NIL-ONSs successfully delivered the drugs (LAN or NIL) into the lenses of the rats, although the instillation of LAN-ONSs or NIL-ONSs alone did not increase lens transparency in the cataractic rats. On the other hand, the cataract-related factors (enhanced Ca2+ and calpain levels) were significantly alleviated by the combination of LAN-ONSs and NIL-ONSs; furthermore, the perinuclear refractile ring in the lens nucleus and enhanced number of swollen fibers were attenuated by the LAN-ONS and NIL-ONS combination. Moreover, the opacity levels in the cataractic rats were reduced after treatment with the combination of LAN-ONSs and NIL-ONSs. It is possible that the combination of LAN and NIL will be useful for the treatment of lens opacification in the future.
• Chiral separation of catechin and epicatechin by reversed phase high-performance liquid chromatography with β-cyclodextrin stepwise and linear gradient elution modes.

  Hiroyuki Terashima; Mayuko Seki; Saki Watanabe; Atsushi Yamamoto; Sen-Ichi Aizawa; Atsushi Taga; Ikko Mikami; Shuji Kodama

  Journal of chromatography. A 1673 463029 - 463029 2022/06 

  Catechin and epicatechin were enantioseparated by high-performance liquid chromatography (HPLC) with a phenyl column and aqueous mobile phases containing 0.05% (w/v) and 0.6% (w/v) of β-cyclodextrin for catechin and epicatechin, respectively. β-Cyclodextrin was found to be scarcely retained on a phenyl column. Consequently, it was suggested that catechin, which was eluted earlier than epicatechin, formed more stable inclusion complex with β-cyclodextrin than epicatechin and earlier eluted enantiomers, (-)-catechin and (+)-epicatechin, formed more stable diastereomer complexes with β-cyclodextrin than the respective enantiomers. This was confirmed by β-cyclodextrin-modified micellar electrokinetic chromatography and Benesi-Hildebrand plots by fluorescence spectrophotometry. Effect of sugars (D-sucrose, D-glucose, and D-fructose) on the epimerization of (+)-catechin and (+)-epicatechin by heating was investigated by HPLC with a β-cyclodextrin stepwise elution mode, in which two kinds of aqueous eluents containing different concentrations of β-cyclodextrin were used by turns. The epimerization of the two enantiomers was suppressed only when D-fructose was added. Separation of ten kinds of catechins including catechin and epicatechin enantiomers was investigated by a β-cyclodextrin linear gradient HPLC elution mode without using organic solvents, where two kinds of aqueous eluents containing different concentrations of β-cyclodextrin were used with changing their ratio gradually. These catechins in a green tea infusion could be separated successfully by this method.
• トマト由来ステロイドアルカロイド トマチンによる膵臓癌細胞に対する抗腫瘍効果の検討

  山本 哲志; 辻本 伊織里; 辻 翔斗; 三田村 邦子; 多賀 淳

  日本薬学会年会要旨集 (公社)日本薬学会 142年会 27PO1 - 77 0918-9823 2022/03
• Separation of Fructosyl Oligosaccharides in Maple Syrup by Using Charged Aerosol Detection.

  Kanta Sato; Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  Foods (Basel, Switzerland) 10 (12) 2021/12 

  Fructosyl oligosaccharides, including fructo-oligosaccharide (FOS), are gaining popularity as functional oligosaccharides and have been found in various natural products. Our previous study suggested that maple syrup contains an unidentified fructosyl oligosaccharide. Because these saccharides cannot be detected with high sensitivity using derivatization methods, they must be detected directly. As a result, an analytical method based on charged aerosol detection (CAD) that can detect saccharides directly was optimized in order to avoid relying on these structures and physical properties to clarify the profile of fructosyl oligosaccharides in maple syrup. This analytical method is simple and can analyze up to hepta-saccharides in 30 min. This analytical method was also reliable and reproducible with high validation values. It was used to determine the content of saccharides in maple syrup, which revealed that it contained not only fructose, glucose, and sucrose but also FOS such as 1-kestose and nystose. Furthermore, we discovered a fructosyl oligosaccharide called neokestose in maple syrup, which has only been found in a few natural foods. These findings help to shed light on the saccharides profile of maple syrup.
• Development of simultaneous quantitative analysis of tricarboxylic acid cycle metabolites to identify specific metabolites in cancer cells by targeted metabolomic approach.

  Tetsushi Yamamoto; Kanta Sato; Masafumi Yamaguchi; Kuniko Mitamura; Atsushi Taga

  Biochemical and biophysical research communications 584 53 - 59 2021/12 

  The tricarboxylic acid (TCA) cycle is one of the most important pathways of energy metabolism, and the profiles of its components are influenced by factors such as diseases and diets. Therefore, the differences in metabolic profile of TCA cycle between healthy and cancer cells have been the focus of studies to understand pathological conditions. In this study, we developed a quantitative method to measure TCA cycle metabolites using LC-MS/MS to obtain useful metabolic profiles for development of diagnostic and therapeutic methods for cancer. We successfully analyzed 11 TCA cycle metabolites by LC MS/MS with high reproducibility by using a PFP column with 0.5% formic acid as a mobile phase. Next, we analyzed the concentration of TCA cycle metabolites in human cell lines (HaCaT: normal skin keratinocytes; A431: skin squamous carcinoma cells; SW480: colorectal cancer cells). We observed reduced concentration of succinate and increased concentration of citrate, 2-hydroxyglutarate, and glutamine in A431 cells as compared with HaCaT cells. On the other hand, decreased concentration of isocitrate, fumarate, and α-ketoglutarate and increased concentration of malate, glutamine, and glutamate in A431 cells were observed in comparison with SW480 cells. These findings suggested the possibility of identifying disease-specific metabolites and/or organ-specific metabolites by using this targeted metabolomic analysis.
• Enantioseparation of phenethylamines by using high-performance liquid chromatography column permanently coated with methylated β-cyclodextrin.

  Hiroyuki Terashima; Atsushi Yamamoto; Sen-Ichi Aizawa; Atsushi Taga; Ikko Mikami; Yoshimi Ishihara; Shuji Kodama

  Journal of separation science 44 (15) 2932 - 2940 2021/06 

  Cyclodextrins and their derivatives have been used for chiral high-performance liquid chromatography selectors, while they are costly to use as mobile phase additives in high-performance liquid chromatography. Here, we report application of phenyl column coated permanently with methylated β-cyclodextrin for chiral high-performance liquid chromatography. A 0.1% (v/v) phosphoric acid solution containing 1 M NaCl and 0.5% (w/v) methylated β-cyclodextrin was subjected to a phenyl column at a flow rate of 0.5 mL/min at 30°C for 2 h. Using the precoating phenyl column, all the enantiomers of the four phenethylamines (norepinephrine, epinephrine, octopamine, and synephrine) were successfully separated simultaneously by high-performance liquid chromatography with a mobile phase without methylated β-cyclodextrin at a flow rate of 0.2 mL/min at 30°C. The enantioseparation ability was retained for successive analyses during 1 week. It is suggested that inclusion complex of methylated β-cyclodextrin with a phenyl group on the surface of the stationary phase could be formed and that the inclusion complex could form the ternary complex with the injected analytes. The longer retention time of (S)-enantiomers of analytes than corresponding (R)-enantiomers for high-performance liquid chromatography could be explained from the higher stability of the methylated β-cyclodextrin complexes with (S)-enantiomers, which were confirmed by CE and 1 H nuclear magnetic resonance experiments.
• Identification of potential diagnostic biomarker for pancreatic cancer based on shotgun proteomic analysis.

  Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  CANCER SCIENCE WILEY 112 524 - 524 1347-9032 2021/02
• Correction: Sato, K., et al. Identification of a Novel Oligosaccharide in Maple Syrup as a Potential Alternative Saccharide for Diabetes Mellitus Patients. Int. J. Mol. Sci. 2019, 20, 5041.

  Kanta Sato; Noriaki Nagai; Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  International journal of molecular sciences 21 (14) 2020/07 

  The authors wish to make the following corrections to this paper [...].
• A Simple Screening Method for Extra Virgin Olive Oil Adulteration by Determining Squalene and Tyrosol.

  Tatsuya Hayakawa; Miran Yanagawa; Atsushi Yamamoto; Sen-Ichi Aizawa; Atsushi Taga; Naoki Mochizuki; Yutaka Itabashi; Hajime Uchida; Yoshimi Ishihara; Shuji Kodama

  Journal of oleo science 69 (7) 677 - 684 2020/07 

  A simple screening method for discrimination between commercial extra virgin olive oils and their blends with other vegetable oils was developed. Squalene, which was contained relatively high amounts in virgin olive oil, was determined by HPLC after a simple pretreatment that was carried out by dilution of oil samples with 2-propanol. Tyrosol, which was contained at relatively high concentration in virgin olive oil among phenolic compounds, was determined by HPLC after a simple liquid-liquid extraction. When using squalene and tyrosol contents as axes, extra virgin olive oils could be discriminated from pure olive oils, blended oils (extra virgin olive oils with sunflower oil or grapeseed oil) and other vegetable oils. These results suggest that determining squalene and tyrosol in seed oil samples could be useful in distinguishing between extra virgin olive oil and blended oils as a screening method.
• Direct enantioseparation of mandelic acid by high-performance liquid chromatography using a phenyl column precoated with a small amount of cyclodextrin additive in a mobile phase.

  Yuri Watanabe; Ikko Mikami; Atsushi Yamamoto; Sen-Ichi Aizawa; Atsushi Taga; Naoki Mochizuki; Yoshimi Ishihara; Shuji Kodama

  Chirality 32 (7) 1020 - 1029 2020/07 

  Direct enantioseparation of mandelic acid by high-performance liquid chromatography (HPLC) with a reversed phase column and a mobile phase containing a small amount of hydroxylpropyl-β-cyclodextrin (HP-β-CD) was studied as an efficient method for saving consumption of the CD additive. As a result, it was proposed that racemic mandelic acid can be analyzed with a phenyl column by using a mobile phase composed of 10 mM ammonium acetate buffer (pH 4.2) and 0.02% (w/v) HP-β-CD at a flow rate of 1.0 mL/min at 40°C after the passage of 10 mM ammonium acetate buffer (pH 4.2) containing 0.1% (w/v) HP-β-CD as a precoating mobile phase for 60 min. It is suggested that HP-β-CD is bound with a phenyl group on the surface of the stationary phase to allow a phenyl column to act as a transient chiral column, and injected mandelic acid can form the ternary complex with the adsorbed HP-β-CD. The longer retention time of D-mandelic acid than the L-isomer for HPLC can be explained from the higher stability of the HP-β-CD complex with D-mandelic acid, which was confirmed by CE experiment with HP-β-CD as a selector. The efficiency of a phenyl column compared with other stationary phases was also discussed.
• Cyclophilin a knokdown inhibits cell migration and invasion through the suppression of epithelial-mesenchymal transition in colorectal cancer cells.

  Tetsushi Yamamoto; Hideki Takakura; Kuniko Mitamura; Atsushi Taga

  Biochemical and biophysical research communications 526 (1) 55 - 61 2020/05 [Refereed]
   

  Enhanced expression of cyclophilin A (CypA) in colorectal cancer (CRC) was reported; however, how CypA influences CRC progression is not clear. Therefore, we examine the effects of CypA on CRC cell progression. Knockdown of CypA in SW480 cells significantly inhibited cell migration and invasion but had no effect on cell proliferation. In addition, upregulation of E-cadherin and downregulation of N-cadherin and Snail expression were observed by CypA knockdown. These results suggested that CypA knockdown inhibited cell migration and invasion by suppressing epithelial-mesenchymal transition. CypA knockdown was also associated with increased p38 phosphorylation, and the p38 inhibitor treatment led to increase in the number of invasive CypA-knockdown SW480 cells. Therefore, CypA may be a potential therapeutic target in preventing CRC metastasis.
• A method for detecting tumor cells derived from colorectal cancer by targeting cell surface glycosylation with affinity capillary electrophoresis.

  Tetsushi Yamamoto; Kanta Sato; Shinpei Wakahara; Kuniko Mitamura; Atsushi Taga

  Journal of pharmaceutical and biomedical analysis 182 113138 - 113138 2020/04 [Refereed]
   

  Circulating tumor cells (CTCs) are involved in metastasis; thus, one of the most important approaches for identifying metastatic cancer is to detect CTCs in blood. In the present study, we examined whether directly analyzing cells with capillary electrophoresis (CE) could distinguish cancer cells from normal cells, based on differences in cell surface glycosylation. We compared human colorectal cancer (CRC) cell lines to a normal colon epithelium cell line. Our results demonstrated that direct CE analysis could successfully distinguish between CRC and normal cells with high reproducibility, based on migration times. We found that the weighted-average migration time was significantly shorter for CRC cells than for normal cells. Next, we observed changes in the electrophoretic behaviors of CRC cells by adding five different types of lectins. When Aleuria aurantia lectin was added, migration delays were observed in CRC cells, but not in normal colon cells. Therefore, by focusing on shifts in migration time after adding specific lectins, we could distinguish cancer cells from normal cells. These findings suggested that this diagnostic method of directly analyzing cells with CE after adding specific lectin(s) could be useful for detecting the difference in the sugar moieties on a surface of normal and cancer cells.
• The Intravitreal Injection of Lanosterol Nanoparticles Rescues Lens Structure Collapse at an Early Stage in Shumiya Cataract Rats.

  Noriaki Nagai; Yuya Fukuoka; Kanta Sato; Hiroko Otake; Atsushi Taga; Mikako Oka; Noriko Hiramatsu; Naoki Yamamoto

  International journal of molecular sciences 21 (3) 2020/02 [Refereed]
   

  We designed an intravitreal injection formulation containing lanosterol nanoparticles (LAN-NPs) via the bead mill method and evaluated the therapeutic effect of LAN-NPs on lens structure collapse and opacification using two rat cataract models (SCR-N, rats with slight lens structure collapse; SCR-C, rats with the combination of a remarkable lens structure collapse and opacification). The particle size of lanosterol in the LAN-NPs was around 50-400 nm. A single injection of LAN-NPs (0.5%) supplied lanosterol into the lens for 48 h, and no irritation or muddiness was observed following repeated injections of LAN-NPs for 6 weeks (once every 2 days). Moreover, LAN-NPs repaired the slight collapse of the lens structure in SCR-N. Although the remarkable changes in the lens structure of SCR-C were not repaired by LAN-NP, the onset of opacification was delayed. In addition, the increase of cataract-related factors (Ca2+ contents, nitric oxide levels, lipid peroxidation and calpain activity levels) in the lenses of SCR-C was attenuated by the repeated injection of LAN-NPs. It is possible that a deficiency of lanosterol promotes the production of oxidative stress. In conclusion, it is difficult to improve serious structural collapse with posterior movement of the lens nucleus with a supplement of lanosterol via LAN-NPs. However, the intravitreal injection of LAN-NPs was found to repair the space and structural collapse in the early stages in the lenses.
• Retinal proteomic evaluation of rats following streptozotocin-injection using shotgun proteomics

  Hiroko Otake; Tetushi Yamamoto; Saori Deguchi; Atushi Taga; Noriaki Nagai

  MOLECULAR MEDICINE REPORTS SPANDIDOS PUBL LTD 21 (1) 379 - 386 1791-2997 2020/01 [Refereed]
   

  It is important to elucidate how retinal stimulation leads to retinal protection and dysfunction. The current study aimed to identify factors that are up- and downregulated in the retinas of streptozotocin (STZ)-induced diabetic rats with acute retinal dysfunction. Retinal function was measured and changes in protein expressions were determined using electroretinograms (ERGs) and liquid chromatography/mass spectroscopy-based shotgun proteomics, respectively. The results revealed that the plasma glucose levels of STZ rats were markedly higher when compared with normal rats. Furthermore, levels of a-waves, b-waves and oscillatory potential amplitudes on ERGs in STZ rats were decreased compared with healthy animals. With use of shotgun proteomics, 391 proteins were identified in the retinas of normal rats and 541 proteins were found in the retinas of STZ rats. Of the 560 proteins identified in rat retinas, 372 (66.4%) were present in both normal and STZ rats. Of these, 19 (3.39%) were unique to normal rats and 169 (30.1%) were unique to STZ rats. Gene Ontology analysis was performed on the candidate proteins that were differentially regulated in the retinas of STZ rats and focused on those classified as 'protein binding', which serve important roles in retinal neurodegeneration. The results revealed an excessive expression of retinol-binding protein 1 (RBP1) and a negative expression of rod outer segment membrane protein 1 (Rom-1) in the retinas of STZ rats. Therefore, retinal function may be decreased with STZ-induced injury, and expressions of Rom-1 and RBP1 may be altered in the retinas of STZ rats.
• Identification of a Novel Oligosaccharide in Maple Syrup as a Potential Alternative Saccharide for Diabetes Mellitus Patients

  Kanta Sato; Noriaki Nagai; Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES MDPI 20 (20) 2019/10 [Refereed]
   

  The incidence of diabetes mellitus (DM) is increasing rapidly and is associated with changes in dietary habits. Although restrictions in the use of sweeteners may prevent the development of DM, this might reduce the quality of life of patients with DM. Therefore, there has been a great deal of research into alternative sweeteners. In the search for such sweeteners, we analyzed the carbohydrate content of maple syrup and identified a novel oligosaccharide composed of fructose and glucose, linked at the C-4 of glucose and the C-6 of fructose. This oligosaccharide inhibited the release of fructose from sucrose by invertase (IC50: 1.17 mmol/L) and the decomposition of maltose by alpha-(1-4) glucosidase (IC50: 1.72 mmol/L). In addition, when orally administered together with sucrose to rats with DM, the subsequent plasma glucose concentrations were significantly lower than if the rats had been administered sucrose alone, without having any effect on the insulin concentration. These findings suggest that this novel oligosaccharide might represent a useful alternative sweetener for inclusion in the diet of patients with DM and may also have therapeutic benefits.
• プロテオーム解析を用いたストレプトゾトシン誘発糖尿病モデルラットの角膜における創傷治癒遅延機構の解析

  山本 哲志; 蛭子 小春; 三田村 邦子; 長井 紀章; 多賀 淳

  JSBMS Letters (一社)日本医用マススペクトル学会 44 (Suppl.) 110 - 110 1881-5464 2019/08
• Dark-colored maple syrup treatment induces S-phase cell cycle arrest via reduced proliferating cell nuclear antigen expression in colorectal cancer cells.

  Yamamoto T; Nishita T; Taga A

  Oncology letters 17 (3) 2713 - 2720 1792-1074 2019/03 [Refereed]
   

  Maple syrup is a natural sweetener that is consumed worldwide. It has been previously reported that dark-colored maple syrup exerts an inhibitory effect on colorectal cancer (CRC) proliferation and invasion. In the present study, the underlying mechanism of CRC cell growth inhibition was examined with dark-colored maple syrup treatment using a shotgun liquid chromatography-tandem mass spectrometry-based global proteomic approach. Applying a semi-quantitative method based on spectral counting, 388 proteins were identified with expression changes of >1.5-fold following dark-colored maple syrup treatment. Gene Ontology analysis revealed that these proteins possessed cell cycle-associated functions. It was also indicated that CRC cells treated with dark-colored maple syrup exhibited decreased proliferating cell nuclear antigen (PCNA) expression and S-phase cell cycle arrest. Dark-colored maple syrup treatment also resulted in altered expression of cell cycle-associated genes, including cyclin-dependent kinase (CDK)4 and CDK6. In conclusion, these data suggested that dark-colored maple syrup induced S-phase cell cycle arrest in CRC cells by reducing the expression of PCNA and regulating cell cycle-associated genes. These findings suggest that dark-colored maple syrup may be a source of compounds for the development of novel drugs for colorectal cancer treatment.
• Separation of synephrine enantiomers in citrus fruits by a reversed phase HPLC after chiral precolumn derivatization

  Sohei Tanaka; Misaki Sekiguchi; Atsushi Yamamoto; Sen Ichi Aizawa; Kanta Sato; Atsushi Taga; Hiroyuki Terashima; Yoshimi Ishihara; Shuji Kodama

  Analytical Sciences 35 (4) 407 - 412 0910-6340 2019 [Refereed]
   

  © 2019 The Japan Society for Analytical Chemistry. Racemic synephrine, which was transformed into diastereomers by derivatization with 2,3,4,6-tetra-O-acetyl-β-Dglucopyranosil isothiocyanate, was resolved by a reversed phase HPLC with UV detection at 254 nm. The total contents of synephrine enantiomers in citrus fruit samples were exocarp > mesocarp > endocarp > sarcocarp, suggesting that synephrine content of outer side of citrus fruits was higher than that of the inner side. (R)-Synephrine was detected in exocarp of eleven fresh citrus fruits, except for lemon, lime, and grapefruit samples. (S)-Synephrine was determined in the exocarp of four citrus fruits (mikan, orange, bitter orange, and ponkan samples) and the ratio of (S)-synephrine to total synephrine was 0.5 - 0.9%. The racemization of (R)-synephrine in aqueous solution during heating at 100°C was also examined. An increase in the heating time brought about an increase in the (S)-synephrine content in a linear fashion. The racemization was found to be significantly reduced by the addition of D-fructose, D-maltose, D-glucose, D-mannose or D-galactose, but not D-sucrose or D-mannitol. It is suggested that the reducibility of sugars may result in the inhibition of racemization.
• A Proteomic Approach for Understanding the Mechanisms of Delayed Corneal Wound Healing in Diabetic Keratopathy Using Diabetic Model Rat

  Tetsushi Yamamoto; Hiroko Otake; Noriko Hiramatsu; Naoki Yamamoto; Atsushi Taga; Noriaki Nagai

  INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES MDPI 19 (11) 1422-0067 2018/11 [Refereed]
   

  Diabetes mellitus is a widespread metabolic disorder, and long-term hyperglycemia in diabetics leads to diabetic keratopathy. In the present study, we used a shotgun liquid chromatography/mass spectrometry-based global proteomic approach using the cornea of streptozotocin-induced diabetic (STZ) rats to examine the mechanisms of delayed corneal wound healing in diabetic keratopathy. Applying a label-free quantitation method based on spectral counting, we identified 188 proteins that showed expression changes of >2.0-fold in the cornea of STZ rats. In particular, the level of lumican expression in the cornea of STZ rats was higher than that of the normal rats. In the cornea of the normal rat, the expression level of lumican was elevated during the wound healing process, and it returned to the same expression level as before cornea injury after the wound was healed completely. On the other hand, a high expression level of lumican in the cornea of STZ rats was still maintained even after the wound was healed completely. In addition, adhesion deficiency in corneal basal cells and Bowman's membrane was observed in the STZ rat. Thus, abnormally overexpressed lumican may lead to adhesion deficiency in the cornea of STZ rats.
• Chiral separation of isoxanthohumol and 8-prenylnaringenin in beer, hop pellets and hops by HPLC with chiral columns

  Hyuga Moriya; Sohei Tanaka; Yukari Iida; Satomi Kitagawa; Sen ichi Aizawa; Atsushi Taga; Hiroyuki Terashima; Atsushi Yamamoto; Shuji Kodama

  Biomedical Chromatography 32 (10) e4289  0269-3879 2018/10 [Refereed]
   

  Copyright © 2018 John Wiley & Sons, Ltd. Xanthohumol, isoxanthohumol, and 8-prenylnaringenin in beer, hop and hop pellet samples were analyzed by HPLC using an InertSustain phenyl column and the mobile phase containing 40% methanol and 12% 2-propanol. Fractions of isoxanthohumol and 8-prenylnaringenin obtained by the above HPLC were separately collected. Isoxanthohumol and 8-prenylnaringenin were enantioseparated by HPLC using a Chiralcel OD-H column with a mobile phase composed of hexane–ethanol (90:10, v/v) and a Chiralpak AD-RH column with a mobile phase composed of methanol–2-propanol–water (40:20:40, v/v/v), respectively. Isoxanthohumol and 8-prenylnaringenin from beer, hop and hop pellet samples were found to be present in a racemic mixture. This can be explained by the fact that the two analytes were produced by a nonenzymatic process. The effects of boiling conditions on the conversion of xanthohumol into isoxanthohumol were also studied. A higher concentration of ethanol in heating solvent resulted in a decrease in the conversion ratio and the conversion was stopped by addition of ethanol at >50% (v/v). The isomerization was significantly affected pH (2−10) and the boiling medium at pH 5 was minimum for the conversion. Therefore, it was suggested that xanthohumol was relatively difficult to convert to isoxanthohumol in wort (pH 5−5.5) during boiling.
• Collagen peptides from soft‑shelled turtle induce calpain‑1 expression and regulate inflammatory cytokine expression in HaCaT human skin keratinocytes.

  Yamamoto T; Nakanishi S; Mitamura K; Taga A

  International journal of molecular medicine 42 (2) 1168 - 1180 1107-3756 2018/08 [Refereed]
   

  Collagen peptides (CPs), derived by hydrolyzing collagen with chemicals or enzymes, are often used as functional materials, due to their various bioactivities and high bioavailability. A previous study by our group reported that collagen from soft‑shelled turtle, Pelodiscus sinensis, induces keratinocytes to undergo epithelial‑mesenchymal transition and facilitates wound healing. Therefore, CPs derived from soft‑shelled turtle collagen may have useful effects on the skin. In the present study, the functional effects of CPs on human skin were examined by analyzing CP‑treated human keratinocytes with a shotgun liquid chromatography/mass spectrometry‑based global proteomic approach. A semi‑quantitative method based on spectral counting was applied and 211 proteins that exhibited >2‑fold changes in expression after CP treatment were successfully identified. Based on a Gene Ontology analysis, the functions of these proteins were indicated to be closely linked with protein processing. In addition, CP treatment significantly increased the expression of calpain‑1, a calcium‑dependent intracellular cysteine protease. Furthermore, CP‑treated keratinocytes exhibited elevated interleukin (IL)‑1α and IL‑8 expression and reduced IL‑6 expression. CPs also induced the expression of proteins implicated in cell‑cell adhesion and the skin barrier. Therefore, CPs from soft‑shelled turtle may provide significant benefits for maintaining the biological environment of the skin, and may be useful as components of pharmaceuticals and medical products.
• Instillation of sericin enhances corneal wound healing through the ERK pathway in rat debrided corneal epithelium

  Noriaki Nagai; Yuya Fukuoka; Miyu Ishii; Hiroko Otake; Tetsushi Yamamoto; Atsushi Taga; Norio Okamoto; Yoshikazu Shimomura

  International Journal of Molecular Sciences MDPI AG 19 (4) 1422-0067 2018/04 [Refereed]
   

  Sericin is a major constituent of silk produced by silkworms. We previously found that the instillation of sericin enhanced the proliferation of corneal epithelial cells, and acted to promote corneal wound healing in both normal and diabetic model rats. However, the mechanisms by which sericin promotes the proliferation of corneal cells have not been established. In this study, we investigated the effects of sericin on Akt and ERK activation in a human corneal epithelial cell line (HCE-T cells) and rat debrided corneal epithelium. Although Akt phosphorylation was not detected following the treatment of HCE-T cells with sericin, ERK1/2 phosphorylation was enhanced. The growth of HCE-T cells treated with sericin was significantly increased, with the cell growth of sericin-treated HCE-T cells being 1.7-fold higher in comparison with vehicle-treated HCE-T cells. On the other hand, both of an ERK inhibitor U0126 (non-specific specific inhibitor) and SCH772984 (specific inhibitor) attenuated the enhanced cell growth by sericin, and the growth level in the case of co-treatment with sericin and ERK1/2 inhibitor was similar to that of cells treated with ERK1/2 inhibitor alone. In an in vivo study using rat debrided corneal epithelium, the corneal wound healing rate was enhanced by the instillation of sericin, and this enhancement was also attenuated by the instillation of U0126. In addition, the corneal wound healing rate in rats co-instilled with sericin and U0126 was similar to that following the instillation of U0126 alone. In conclusion, we found that the instillation of sericin enhanced cell proliferation via the activation of the MAPK/ERK pathway, resulting in the promotion of corneal wound healing in rat eyes. These findings provide significant information for designing further studies to develop potent corneal wound-healing drugs.
• Proteomic profile of the lens in a streptozotocin-induced diabetic rat model using shotgun proteomics

  Noriaki Nagai; Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  Biomedical Reports Spandidos Publications 7 (5) 445 - 450 2049-9442 2017/11 [Refereed]
   

  Streptozotocin (STZ)-induced diabetic rats (STZ rats) were used to investigate diabetic cataracts. In the current study, a shotgun liquid chromatography (LC)/mass spectrom-etry (MS)-based global proteomic analysis method was used to examine the mechanism of lens opacification as a result of hyperglycemia in STZ rats. The 6-week old Wistar rats were injected with STZ for 2 days (100 mg/kg/day, i.p.) and housed for 3 weeks. The plasma glucose levels were identified to be significantly higher when compared with the normal rats and insulin was not detected in the STZ rats. Furthermore, opacification of the cortical epithelium was observed in the lenses of STZ rats. A total of 235 proteins were identified in the lenses of the STZ rats and 229 in the lenses of the normal rats. A label-free semi-quantitative method, based on spectral counting, identified 52 proteins that were differentially expressed in the lenses of STZ rats compared with normal rats. In particular, superoxide dismutase, which is a critical antioxidant enzyme that detoxifies superoxide through redox cycling, was downregulated when analyzed by the semi-quantitative method. In addition, phosphorylated-p38, which is important in the signaling pathway involved in the oxidative stress response, was significantly increased in the lenses of STZ rats when compared with normal rats (P< 0.05). Thus, the changes in protein expression were evaluated in the lenses of STZ rats using a shotgun LC/MS-based global proteomic analysis approach, and a decrease in antioxidant enzymes and an increase in oxidative stress were identified in the lenses of STZ rats. Further studies are required to examine the role of these proteins in the onset or progression of diabetic cataracts.
• Shotgun label-free proteomic analysis for identification of proteins in HaCaT human skin keratinocytes regulated by the administration of collagen from soft-shelled turtle.

  Yamamoto T; Nakanishi S; Mitamura K; Taga A

  Journal of biomedical materials research. Part B, Applied biomaterials 106 (6) 2403 - 2413 1552-4973 2017/11 [Refereed]
   

  Soft-shelled turtles (Pelodiscus sinensis) are widely distributed in some Asian countries, and we previously reported that soft-shelled turtle tissue could be a useful material for collagen. In the present study, we performed shotgun liquid chromatography (LC)/mass spectrometry (MS)-based global proteomic analysis of collagen-administered human keratinocytes to examine the functional effects of collagen from soft-shelled turtle on human skin. Using a semiquantitative method based on spectral counting, we were able to successfully identify 187 proteins with expression levels that were changed more than twofold by the administration of collagen from soft-shelled turtle. Based on Gene Ontology analysis, the functions of these proteins closely correlated with cell-cell adhesion. In addition, epithelial-mesenchymal transition was induced by the administration of collagen from soft-shelled turtle through the down-regulation of E-cadherin expression. Moreover, collagen-administered keratinocytes significantly facilitated wound healing compared with nontreated cells in an in vitro scratch wound healing assay. These findings suggest that collagen from soft-shelled turtle provides significant benefits for skin wound healing and may be a useful material for pharmaceuticals and medical care products. © 2017 The Authors Journal of Biomedical Materials Research Part B: Applied Biomaterials Published by Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2403-2413, 2018.
• Simultaneous determination of alcohols including diols and triols by HPLC with ultraviolet detection based on the formation of a copper(II) complex

  Sohei Tanaka; Takumi Dohi; Sen-ichi Aizawa; Tomoko Kemmei; Hiroyuki Terashima; Atsushi Taga; Atsushi Yamamoto; Shuji Kodama

  JOURNAL OF SEPARATION SCIENCE WILEY-V C H VERLAG GMBH 40 (21) 4168 - 4175 1615-9306 2017/11 [Refereed]
   

  We developed a reversed-phase high-performance liquid chromatography method with ultraviolet detection using on-line complexation with Cu(II) ion for analysis of five alcohols including diols and triol (methanol, ethanol, 1,2-propanediol, 1,3-propanediol, and glycerol). The Cu(II) ion concentration in the mobile phase had a great influence on the peak areas of these alcohols, but not on their retention times. Column temperature (25-40 degrees C) and pH of the mobile phase did not affect the separation of analytes. The optimum separation conditions were determined as 5 mM CuSO4, 3 mM H2SO4, and 3 mM NaOH at 30 degrees C. The ratio of the peak areas for three alcohols (methanol, 1,2-propanediol, and glycerol) was in good agreement with that calculated from the obtained stability constants, molar absorption coefficients for the 1:1 Cu(II) complexes with the three alcohols, and the injected molar quantities. This fact strongly suggests that the observed high-performance liquid chromatography signals resulted from formation of the 1:1 Cu(II)-alcohol complexes. Using the proposed method, these five alcohols in spirit, liquid for electronic cigarette, mouthwash, and nail enamel remover samples were successfully analyzed with only a simple pretreatment.
• The effect of maple syrup extract on cell proliferation of malignant melanoma cells

  Chiaki Kubota; Tetsushi Yamamoto; Atsushi Taga

  INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE SPANDIDOS PUBL LTD 40 S55 - S55 1107-3756 2017
• The effect of cyclophilin A on cell invasion of colorectal cancer cells

  Tetsushi Yamamoto; Kuniko Mitamura; Atsushi Taga

  INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE SPANDIDOS PUBL LTD 40 S52 - S52 1107-3756 2017 [Refereed]
  
• HPLC Separation of Sulforaphane Enantiomers in Broccoli and Its Sprouts by Transformation into Diastereoisomers Using Derivatization with (S)-Leucine

  Makiko Okada; Atsushi Yamamoto; Sen-ichi Aizawa; Atsushi Taga; Hiroyuki Terashima; Shuji Kodama

  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY AMER CHEMICAL SOC 65 (1) 244 - 250 0021-8561 2017/01 [Refereed]
   

  Racemic sulforaphane, which was derivatized with (S)-leucine (L-leucine), was resolved by reversed phase HPLC with UV detection. The optimum mobile phase conditions were found to be 10 mM citric acid (pH 2.8) containing 22% methanol at 35 degrees C using detection at 254 nm. Sulforaphane enantiomers in florets and stems of five brands of broccoli and leaves and stems of three brands of broccoli sprouts were analyzed by the proposed HPLC method. Both sulforaphane enantiomers were detected in all of the samples. The S/R ratios of sulforaphane in broccoli samples were 1.5-2.6/97.4-98.5% for florets and 5.0-12.1/87.9-95.0% for stems. The S/R ratios in broccoli sprout samples were higher than those in broccoli samples and were found to be 8.3-19.7/80.3-91.7% for leaves and 37.0-41.8/58.2-63.0% for stems. (S)-Sulforaphane detected in the broccoli and its sprout samples was positively identified by separately using an HPLC with a chiral column (Chiralpak AD-RH) and mass spectrometry.
• Effect of dark-colored maple syrup on cell proliferation of human gastrointestinal cancer cell

  Tetsushi Yamamoto; Kanta Sato; Yuika Kubota; Kuniko Mitamura; Atsushi Taga

  Biomedical Reports Spandidos Publications 7 (1) 6 - 10 2049-9442 2017 [Refereed]
   

  Maple syrup is a natural sweetener that is commonly consumed worldwide. While maple syrup mainly comprises sucrose, it also contains phytochemicals that present various biological effects. Maple syrup is made by boiling down sap, and its color and composition vary in accordance with the sap collection season. Typically, seasonal progression is associated with darker syrup color, and antioxidant activity is proportional to the increasingly dark color. The authors previously reported that maple syrup demonstrated inhibitory effects on colorectal cancer cell growth and invasion, which correlated with darker maple syrup color. In the present study, they examined the effects of two different grades of maple syrup on gastrointestinal cancer cell proliferation, to investigate whether the dark-color maple syrup was suitable as a phytomedicine for gastrointestinal cancer treatment. Administration of dark-color maple syrup significantly inhibited gastrointestinal cancer cell growth as compared to non-treated cancer cells. Moreover, administration of dark-color maple syrup clearly inhibited protein kinase B (AKT) phosphorylation and did not impact mitogen-associated protein kinase phosphorylation. These data suggested that dark-color maple syrup may inhibit cell proliferation through suppression of AKT activation and, thus, may be suitable as a phytomedicine for gastrointestinal cancer treatment.
• Identification of aldolase A as a potential diagnostic biomarker for colorectal cancer based on proteomic analysis using formalin-fixed paraffin-embedded tissue

  Tetsushi Yamamoto; Mitsuhiro Kudo; Wei-Xia Peng; Hideyuki Takata; Hideki Takakura; Kiyoshi Teduka; Takenori Fujii; Kuniko Mitamura; Atsushi Taga; Eiji Uchida; Zenya Naito

  TUMOR BIOLOGY SAGE PUBLICATIONS LTD 37 (10) 13595 - 13606 1010-4283 2016/10 [Refereed]
   

  Colorectal cancer (CRC) is one of the most common cancers worldwide, and many patients are already at an advanced stage when they are diagnosed. Therefore, novel biomarkers for early detection of colorectal cancer are required. In this study, we performed a global shotgun proteomic analysis using formalin-fixed and paraffin-embedded (FFPE) CRC tissue. We identified 84 candidate proteins whose expression levels were differentially expressed in cancer and non-cancer regions. A label-free semiquantitative method based on spectral counting and gene ontology (GO) analysis led to a total of 21 candidate proteins that could potentially be detected in blood. Validation studies revealed cyclophilin A, annexin A2, and aldolase A mRNA and protein expression levels were significantly higher in cancer regions than in non-cancer regions. Moreover, an in vitro study showed that secretion of aldolase A into the culture medium was clearly suppressed in CRC cells compared to normal colon epithelium. These findings suggest that decreased aldolase A in blood may be a novel biomarker for the early detection of CRC.
• The Role of Cyclophilin a As a Novel Therapeutic Target of Colorectal Cancer Based on Proteome Analysis Using Formalin-Fixed and Paraffin Embedded Colorectal Cancer Tissue

  Hideki Takakura; Tetsushi Yamamoto; Kuniko Mitamura; Mitsuhiro Kudo; Zenya Naito; Atsushi Taga

  GASTROENTEROLOGY W B SAUNDERS CO-ELSEVIER INC 150 (4) S620 - S620 0016-5085 2016/04 [Refereed]
  
• Protein Component in Maple Syrup Has a Potential to Develop Novel Anti-Cancer Drugs for Colorectal Cancer

  Tetsushi Yamamoto; Ryota Shiburo; Kuniko Mitamura; Atsushi Taga

  GASTROENTEROLOGY W B SAUNDERS CO-ELSEVIER INC 150 (4) S625 - S625 0016-5085 2016/04 [Refereed]
  
• Optimization of Method to Extract Collagen from "Emperor" Tissue of Soft-shelled Turtles

  Tetsushi Yamamoto; Kentaro Uemura; Yuki Sawashi; Kuniko Mitamura; Atsushi Taga

  JOURNAL OF OLEO SCIENCE JAPAN OIL CHEMISTS SOC 65 (2) 169 - 175 1345-8957 2016/02 [Refereed]
   

  Soft-shelled turtles (Pelodiscus sinensis) are widely distributed in some Asian countries, and parts of this turtle contain abundant collagen. In this study, we optimized a method for extracting collagen from the soft-shelled turtle. We used three types of solvent and four extraction conditions to determine an effective collagen extraction method, which was extraction at 37 degrees C with acetic acid after hydrochloric acid pretreatment. Next, we extracted collagen from three regions in the soft-shelled turtle: muscle, skin, and an area of soft tissue in the periphery of the turtle shell known in Japan and China as the "emperor." We determined that emperor tissue yielded the highest concentration and purity of collagen. We then optimized the pretreatment method for extraction from emperor tissue by using formic acid instead of hydrochloric acid, and the amount of extracted collagen increased by approximately 1.3-fold. Finally, we identified the optimal solvent out of four types of organic acid for collagen extraction from emperor tissue; the amount of extracted collagen from emperor tissue increased approximately 3-fold when citric acid was used as the extraction solvent instead of acetic acid. Emperor tissue can regenerate; thus, it is possible to obtain collagen from the emperor repeatedly without killing the turtle. Our findings suggest that the emperor tissue of soft-shelled turtles may be a good source of collagen for pharmaceutical and cosmetic applications.
• Peripheral HMGB1-induced hyperalgesia in mice: Redox state-dependent distinct roles of RAGE and TLR4

  Daichi Yamasoba; Maho Tsubota; Risa Domoto; Fumiko Sekiguchi; Hiroyuki Nishikawa; Keyue Liu; Masahiro Nishibori; Hiroyasu Ishikura; Tetsushi Yamamoto; Atsushi Taga; Atsufumi Kawabata

  JOURNAL OF PHARMACOLOGICAL SCIENCES JAPANESE PHARMACOLOGICAL SOC 130 (2) 139 - 142 1347-8613 2016/02 [Refereed]
   

  Nuclear HMGB1 that contains 3 cysteine residues is acetylated and secreted to the extracellular space, promoting inflammation via multiple molecules such as RAGE and TLR4. We thus evaluated and characterized the redox state-dependent effects of peripheral HMGB1 on nociception. Intraplantar (i.pl.) administration of bovine thymus-derived HMGB1 (bt-HMGB1), all-thiol HMGB1 (at-HMGB1) or disulfide HMGB1 (ds-HMGB1) caused long-lasting mechanical hyperalgesia in mice. The hyperalgesia following i.pl. bt-HMGB1 or at-HMGB1 was attenuated by RAGE inhibitors, while the ds-HMGB1-induced hyperalgesia was abolished by a TLR4 antagonist. Thus, nociceptive processing by peripheral HMGB1 is considered dependent on its redox states. (C) 2016 Japanese Pharmacological Society. Production and hosting by Elsevier B.V.
• 東電福島第1原子力発電所事故に起因する環境中放射性Csの福島県川俣町における調査

  YAMANISHI HIROKUNI; INAGAKI MASAYO; WAKABAYASHI GEN'ICHIRO; HOHARA SHIN'YA; ITO TETSUO; TANAKA NAOMICHI; ISHIWATA SHUNJI; TAGA ATSUSHI; OGATA FUMIHIKO; HORIBATA AKIRA; SUZUKI TAKAHIRO; FURUKAWA MICHIO

  スマートプロセス学会誌 Smart Processing Society for Materials, Environment & Energy (High Temperature Society of Japan) 4 (6) 268 - 274 2186-702X 2015/11
• Surface charge-transfer complex formation of catechol on titanium(IV) oxide and the application to bio-sensing

  Yusuke Murata; Hiroshige Hori; Atsushi Taga; Hiroaki Tada

  JOURNAL OF COLLOID AND INTERFACE SCIENCE ACADEMIC PRESS INC ELSEVIER SCIENCE 458 305 - 309 0021-9797 2015/11 [Refereed]
   

  Adsorption properties of 2-hydroxyphenol (catechol) on TiO2 particles has been studied at 298 K. The adsorption proceeds from the aqueous solution with the Langmuir type behavior. Diffuse reflectance infrared spectra of the catechol-adsorbed TiO2 suggested that catechol is adsorbed on TiO2 solution via the chelation to the surface Ti ions. The adsorption induces a strong absorption in the whole visible region, of which intensity increases with an increase in the adsorption amount. Photoelectrochemical experiments and molecular orbital calculations indicate that the absorption stems from the charge-transfer (CT) transition from the HOMO of catechol to the conduction band of TiO2. Time courses for the adsorption of catechol on mesoporous TiO2 nanocrystalline film-coated glass was traced by measuring the change in the absorbance of the CT band, and analyzed on the basis of the Langmuir model. This study would present a new simple technique for sensing of important biomolecules bearing the catechol moiety. (C) 2015 Published by Elsevier Inc.
• Simultaneous Determination of Trigonelline, Caffeine, Chlorogenic Acid and Their Related Compounds in Instant Coffee Samples by HPLC Using an Acidic Mobile Phase Containing Octanesulfonate

  Kana Arai; Hiroyuki Terashima; Sen-ichi Aizawa; Atsushi Taga; Atsushi Yamamoto; Kaname Tsutsumiuchi; Shuji Kodama

  ANALYTICAL SCIENCES JAPAN SOC ANALYTICAL CHEMISTRY 31 (8) 831 - 835 0910-6340 2015/08 [Refereed]
   

  In order to analyze trigonelline, caffeine, chlorogenic acid, and their related compounds simultaneously, an HPLC method using an InertSustain C18 column and a mobile phase containing octanesulfonate as an ion-pairing reagent under an acidic condition was developed. The optimum mobile phase conditions were determined to be 0.1% phosphoric acid, 4 mM octanesulfonate, and 15% methanol at 35 degrees C. Using the proposed method, trigonelline, nicotinic acid, caffeine, theophylline, chlorogenic acid, and caffeic acid in ten instant coffee samples were analyzed. These analytes except for theophylline were detected in all samples. An increase in the caffeine content in instant coffee samples tended to decrease in both trigonelline and chlorogenic acid contents, and the trigonelline content was found to be correlated well with the chlorogenic acid content (R-2 = 0.887).
• Simultaneous Enantioseparation of Aldohexoses and Aldopentoses Derivatized With L-Tryptophanamide by Reversed Phase HPLC Using Butylboronic Acid as a Complexation Reagent of Monosaccharides

  Mirei Shou; Hiroyuki Terashima; Sen-Ichi Aizawa; Atsushi Taga; Atsushi Yamamoto; Shuji Kodama

  CHIRALITY WILEY-BLACKWELL 27 (7) 417 - 421 0899-0042 2015/07 [Refereed]
   

  Three aldohexoses, glucose, galactose, and mannose, and three aldopentoses, arabinose, xylose, and ribose, were derivatized with L-tryptophanamide (L-TrpNH(2)) under alkaline conditions. Using a basic mobile phase (pH9.2), the three aldohexoses or the three aldopentoses were simultaneously enantioseparated, respectively, but all the six monosaccharides could not be simultaneously enantioseparated. A large amount of nonreacted L-TrpNH(2) was detected after the derivatized monosaccharides. In order to widen the separation window, a large portion of nonreacted L-TrpNH(2) could be eliminated by liquid-liquid extraction with ethylacetate, and elution order of the derivatized monosaccharides and nonreacted L-TrpNH(2) was found to be reversed using a neutral mobile phase. All of the six monosaccharides were simultaneously enantioseparated by reversed phase high-performance liquid chromatography (HPLC) using InertSustainSwift C18 column (4.6mm i.d. x 150mm) and a mobile phase containing 180mM phosphate buffer (pH7.6), 1.5mM butylboronic acid, and 5% acetonitrile at 40 degrees C. Nomenclature of D and L for monosaccharides is based on the configurations of the asymmetric C4 center for aldopentoses and C5 center for aldohexoses. It was found that the enantiomer elution order of these six monosaccharides and fucose in the proposed method conformed to be the absolute configuration of the C2 center. Chirality 27:417-421, 2015. (c) 2015 Wiley Periodicals, Inc.
• Inhibitory effect of maple syrup on the cell growth and invasion of human colorectal cancer cells

  Tetsushi Yamamoto; Kentaro Uemura; Kaho Moriyama; Kuniko Mitamura; Atsushi Taga

  ONCOLOGY REPORTS SPANDIDOS PUBL LTD 33 (4) 1579 - 1584 1021-335X 2015/04 [Refereed]
   

  Maple syrup is a natural sweetener consumed by individuals of all ages throughout the world. Maple syrup contains not only carbohydrates such as sucrose but also various components such as organic acids, amino acids, vitamins and phenolic compounds. Recent studies have shown that these phenolic compounds in maple syrup may possess various activities such as decreasing the blood glucose level and an anticancer effect. In this study, we examined the effect of three types of maple syrup, classified by color, on the cell proliferation, migration and invasion of colorectal cancer (CRC) cells in order to investigate whether the maple syrup is suitable as a phytomedicine for cancer treatment. CRC cells that were administered maple syrup showed significantly lower growth rates than cells that were administered sucrose. In addition, administration of maple syrup to CRC cells caused inhibition of cell invasion, while there was no effect on cell migration. Administration of maple syrup clearly inhibited AKT phosphorylation, while there was no effect on ERK phosphorylation. These data suggest that maple syrup might inhibit cell proliferation and invasion through suppression of AKT activation and be suitable as a phytomedicine for CRC treatment, with fewer adverse effects than traditional chemotherapy.
• Changes in Plasma Glucose in Otsuka Long-Evans Tokushima Fatty Rats After Oral Administration of Maple Syrup

  Noriaki Nagai; Tetsushi Yamamoto; Wataru Tanabe; Yoshimasa Ito; Satoshi Kurabuchi; Kuniko Mitamura; Atsushi Taga

  JOURNAL OF OLEO SCIENCE JAPAN OIL CHEMISTS SOC 64 (3) 331 - 335 1345-8957 2015/03 [Refereed]
   

  We investigate whether maple syrup is a suitable sweetener in the management of type 2 diabetes using the Otsuka Long-Evans Tokushima Fatty (OLETF) rat. The enhancement in plasma glucose (PG) and glucose absorption in the small intestine were lower after the oral administration of maple syrup than after sucrose administration in OLETF rats, and no significant differences were observed in insulin levels. These data suggested that maple syrup might inhibit the absorption of glucose from the small intestine and preventing the enhancement of PG in OLETF rats. Therefore, maple syrup might help in the prevention of type 2 diabetes.
• Simultaneous Enantioseparation of Monosaccharides Derivatized with L-Tryptophan by Reversed Phase HPLC

  Mami Akabane; Atsushi Yamamoto; Sen-ichi Aizawa; Atsushi Taga; Shuji Kodama

  ANALYTICAL SCIENCES JAPAN SOC ANALYTICAL CHEMISTRY 30 (7) 739 - 743 0910-6340 2014/07 [Refereed]
   

  Three reducing monosaccharides (glucose; Glc, galactose; Gal, and mannose; Man) were derivatized with L-tryptophan (L-Trp) under alkaline conditions. The DL-Gal and DL-Man derivatives were chirally resolved by HPLC with an acidic mobile phase, but the DL-Glc derivative was not. All of the three DL-monosaccharide derivatives were simultaneously enantioseparated using HPLC with a SunShell RP-AQUA column (C28) and a basic mobile phase. The optimum mobile phase conditions consisted of 5 mM phosphate and 25 mM tetraborate buffer (pH 9.6) at 20 degrees C. With this system, resolution of D- and L-isomers of the Glc, Gal and Man derivatives were approximately 1.7, 2.2 and 2.4, respectively. When the three monosaccarides were derivatized with L-phenylalanine instead of L-Trp, DL-Gal and DL-Man were enantioseparated under both acidic and basic conditions, but DL-Glc was not. It was observed that enantiomer elution orders of the three monosaccharides derivatized with L-Trp were reasonably reversed when derivatized with D-Trp. It was also revealed that borate anions were required for simultaneous enantioseparation with HPLC.
• Comparison of the Enhancement of Plasma Glucose Levels in Type 2 Diabetes Otsuka Long-Evans Tokushima Fatty Rats by Oral Administration of Sucrose or Maple Syrup

  Noriaki Nagai; Yoshimasa Ito; Atsushi Taga

  JOURNAL OF OLEO SCIENCE JAPAN OIL CHEMISTS SOC 62 (9) 737 - 743 1345-8957 2013/09 [Refereed]
   

  Maple syrup is used as a premium natural sweeter, and is known for being good for human health. In the present study, we investigate whether maple syrup is suitable as a sweetener in the management of type 2 diabetes using Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a model of type 2 diabetes mellitus. OLETF rats develop type 2 diabetes mellitus by 30 weeks of age, and 60-week-old OLETF rats show hyperglycemia and hypoinsulinemia via pancreatic beta-cell dysfunction. The administration of sucrose or maple syrup following an OGT test increased plasma glucose (PG) levels in OLETF rats, but the enhancement in PG following the oral administration of maple syrup was lower than in the case of sucrose administration in both 30- and 60-week-old OLETF rats. Although, the insulin levels in 30-week-old OLETF rats also increased following the oral administration of sucrose or maple syrup, no increase in insulin levels was seen in 60-week-old OLETF rats following the oral administration of either sucrose or maple syrup. No significant differences were observed in insulin levels between sucrose- and maple syrup-administered OLETF rats at either 30 or 60 weeks of age. The present study strongly suggests that the maple syrup may have a lower glycemic index than sucrose, which may help in the prevention of type 2 diabetes.
• Determination of α-hydroxy acids and their enantiomers in fruit juices by ligand exchange CE with a dual central metal ion system

  Shuji Kodama; Sen Ichi Aizawa; Atsushi Taga; Atsushi Yamamoto; Yoshitaka Honda; Kentaro Suzuki; Tomoko Kemmei; Kazuichi Hayakawa

  Electrophoresis 34 (9-10) 1327 - 1333 0173-0835 2013/05 [Refereed]
   

  The content of α-hydroxy acids and their enantiomers can be used to distinguish authentic and adulterated fruit juices. Here, we investigated the use of ligand exchange CE with two kinds of central metal ion in a BGE for the simultaneous determination of enantiomers of dl-malic, dl-tartaric and dl-isocitric acids, and citric acid. Ligand exchange CE with 100 mM d-quinic acid as a chiral selector ligand and 10 mM Cu(II) ion as a central metal ion could enantioseparate dl-tartaric acid but not dl-malic acid or dl-isocitric acid. Addition of 1.8 mM Sc(III) ion to the BGE with 10 mM Cu(II) ion to create a dual central metal ion system permitted the simultaneous determination of these α-hydroxy acid enantiomers and citric acid. The proposed ligand exchange CE was thus well suited for detecting adulteration of fruit juices. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
• 抗がん剤汚染を防止する注射剤バイアル用ゴム栓「もれま栓」の開発

  杉浦 麗子; 石渡 俊二; 多賀 淳; 西田 升三; 喜多 綾子; 藤田 秀樹; 品川

  医療薬学 (一社)日本医療薬学会 39 (5) 271 - 275 1346-342X 2013 

  実験用ゴム栓1は通常のバイアル用ゴム栓(対照)の脚部に厚さ2mmのシリコンゴムを貼付し、実験用ゴム栓2はブチルゴムで作製し、上下2片を嵌合させて用いた。平均漏液量は対照用ゴム栓で8.2μL、実験用ゴム栓1で1.8μLと1/5に減少した。検体数を9とした場合の平均漏液量は対照用ゴム栓で16.7μL、実験用ゴム栓2で1.0μLと1/17に減少した。次いで実験用ゴム栓2の嵌合部空間にウレタン系連泡スポンジの吸収体を入れた場合、平均漏液量は0.3μLと更に減少した。吸収体を入れた実験用ゴム栓2を装着したバイアルを用い、注射針の抜針途中でバイアルを反転正立させ、その後に抜針する方法では、全ての検体で漏液量は検出限界以下であった。今回開発した二重底構造のゴム栓は漏液防止効果を有し、無菌性や異物排除などの条件を満たし、工場出荷時に本ゴム栓が装着されれば、医療従事者は従来のゴム栓と同じ要領で操作可能と考えられた。
• 99%以上のセシウムを除去するゼオCa漆喰の開発および適用施設例

  MORIMURA TSUYOSHI; TAGA ATSUSHI; ISHIWATA SHUNJI; OGATA FUMIHIKO

  機能材料 32 (12) 50 - 57 0286-4835 2012/11
• Improvement of Dissolution Test Using Micro-controlled Roller Pump

  Noriaki Nagai; Nahoko Konishi; Tadahisa Nitta; Atsushi Taga; Yoshimasa Ito

  YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN PHARMACEUTICAL SOC JAPAN 132 (11) 1307 - 1316 0031-6903 2012/11 [Refereed]
   

  The dissolution test is a core performance test in pharmaceutical development and quality control of solid drug products. The conventional HPLC dissolution method (batch-sampling method) involves many steps including the filtration, collection and replenishment of sample solutions. We previously reported a dissolution test that involved microdialysis methods (microdialysis-HPLC method) and allowed many steps to be omitted. However, the recovery rate of theophylline by the microdialysis-HPLC method was lower, and the decrease in the flow rate through the dialysis probe caused variation between each tablet. In this study, we have attempted to improve the dissolution test by using a precise micro-controlled roller pump and microfiltering probe (microfiltering-HPLC method). Sustained release preparations of Theodur (R) (100 mg) were used, and the test solutions used were water, buffer at pH 1.2 and pH 6.8, and pH 6.8-buffer containing 0.1-1% polysorbate 80 or sodium lauryl sulfate. In all test solutions, the microfiltering-HPLC method was able to accomplish continuous sampling of sample solutions, and the recovery rate of theophylline was over 90%. The dissolution behavior by the microfiltering-HPLC method tends to reflect the pharmaceutical design in comparison with the batch-sampling method, and the standard deviations by the microfiltering-HPLC are lower than with the batch-sampling method. In addition, the microfiltering-HPLC method allows many steps to be omitted, such as the filtration, collection and replenishment of sample solutions. These findings provide significant information that can be used in the pharmaceutical development and quality assessment of solid drug products.
• Enantioseparation of alpha-hydroxy acids by chiral ligand exchange CE with a dual central metal ion system

  Shuji Kodama; Atsushi Yamamoto; Sen-ichi Aizawa; Yoshitaka Honda; Kentaro Suzuki; Tomoko Kemmei; Atsushi Taga

  ELECTROPHORESIS WILEY-BLACKWELL 33 (18) 2920 - 2924 0173-0835 2012/09 [Refereed]
   

  Using two kinds of central metal ions in a background electrolyte, ligand exchange CE was investigated for the simultaneous enantioseparation of dl-malic, dl-tartaric, and dl-isocitric acids. Ligand exchange CE with 100 mM d-quinic acid as a chiral selector ligand and 10 mM Cu(II) ion as a central metal ion could enantioseparate dl-tartaric acid but not dl-malic acid or dl-isocitric acid. A dual central metal ion system containing 0.5 mM Al(III) ion in addition to 10 mM Cu(II) ion in the background electrolyte enabled the simultaneous enantioseparation of the three a-hydroxy acids. These results suggest that the use of a dual central metal ion system can be useful for enantioseparation by ligand exchange CE.
• Direct enantioseparation of lipoic acid in dietary supplements by capillary electrophoresis using trimethyl-beta-cyclodextrin as a chiral selector

  Shuji Kodama; Atsushi Taga; Sen-ich Aizawa; Tomoko Kemmei; Yoshitaka Honda; Kentaro Suzuki; Atsushi Yamamoto

  ELECTROPHORESIS WILEY-BLACKWELL 33 (15) 2441 - 2445 0173-0835 2012/08 [Refereed]
   

  Lipoic acid, an antioxidant, naturally occurs as the (R)-enantiomer, while synthetic lipoic acid is racemic. It is thus of interest to know the (R)-enantiomer content of lipoic acid supplements. Here, we used capillary electrophoresis to directly enantioseparate lipoic acid in dietary supplements by using a sulfonated capillary with an effective voltage of +18 kV and direct detection at 200 nm. Factors affecting migration time and resolution of lipoic acid were investigated. The optimum background electrolyte was found to be 100 mM phosphate buffer (pH 7.0) containing 8 mM trimethyl-beta-cyclodextrin as a chiral selector at 20 degrees C. Under the proposed conditions, direct chiral resolution of lipoic acid in dietary supplements was conducted successfully.
• 注射剤調製時のバイアルからの漏液量測定法の確立と注射針形状の漏液量への影響

  杉浦 麗子; 多賀 淳; 石渡 俊二; 西田 升三; 喜多 綾子; 藤田 秀樹

  医療薬学 (一社)日本医療薬学会 38 (6) 379 - 383 1346-342X 2012/06 

  簡便かつ再現性よく、針の穿刺→抜針までの1単位の操作ごとの液漏れ量を測定する方法を確立し、確立した測定法を用いて、注射針の太さおよびベベルの形状と漏液との関連性を定量的に検討した。確立した抽出および測定法を用いて、注射針形状が漏液量に与える影響について調べた。18G RB針からの漏れの平均値は19.7μL、18G SB針からの漏れの平均値は14.4μLであった。22G RB針および22G SB針からの漏れ量の平均値は、それぞれ2.6μLおよび2.5μLと低値であった。18G RBと22G RB、あるいは、18G SBと22G SBとの漏液量の差は有意であった。18G RBからの漏液量は18G SBの値より高値を示したが、両者の間に有意差は認められず、22G RBからの漏液量は22G SBの値とほぼ同等の値を示した。
• 抗がん剤汚染防止用ゴム栓「もれま栓」の検討

  石渡 俊二; 多賀 淳; 藤田 秀樹; 西田 升三; 喜多 綾子; 杉浦 麗子

  日本薬学会年会要旨集 (公社)日本薬学会 132年会 (4) 202 - 202 0918-9823 2012/03
• 化学発光を利用した注射剤混合調製トレーニングシステムの実習への応用性の検討

  石渡 俊二; 多賀 淳; 喜多 綾子; 髙田 充隆; 杉浦 麗子; 小泉 祐一; 森 卯京; 西山; 辰美; 荒井 真美子

  日本病院薬剤師会雑誌 一般社団法人 日本病院薬剤師会 48 (2) 189 - 192 2012
• Simple Determination of a Strongly Aromatic Compound, Sotolon, by Capillary Electrophoresis

  Atsushi Taga; Atsushi Sato; Kentaro Suzuki; Manami Takeda; Shuji Kodama

  JOURNAL OF OLEO SCIENCE JAPAN OIL CHEMISTS SOC 61 (1) 45 - 48 1345-8957 2012/01 [Refereed]
   

  A strongly aromatic compound, sotolon, was assessed by capillary zone electrophoresis within 9 min without specific pre-sample treatment. The calibration curve comprised a straight line with good linearity (R = 0.997) over a relatively wide range of 3.13 to 100 ppm. The precision of this system was excellent with relative standard deviations of 1.39% for migration time and 2.96 % for peak response over 10 repetitions at a concentration of 12.5 ppm. The limit of quantitation and limit of detection values were 3.13 ppm (S/N = 9) and 0.781 ppm (S/N = 3), respectively. Using this system, sotolon was clearly detected from a maple-flavored food additive.
• 抗がん剤汚染防止バイアル用ゴム栓「もれま栓」プロトタイプの開発

  石渡 俊二; 多賀 淳; 藤田 秀樹; 西田 升三; 喜多 綾子; 杉浦 麗子

  日本薬学会年会要旨集 (公社)日本薬学会 131年会 (4) 241 - 241 0918-9823 2011/03
• キャピラリー電気泳動を用いる個々の注射剤容器からの漏液量低コスト簡易測定法の開発

  多賀 淳; 石渡 俊二; 藤田 秀樹; 西田 升三; 喜多 綾子; 杉浦 麗子

  日本薬学会年会要旨集 (公社)日本薬学会 131年会 (4) 242 - 242 0918-9823 2011/03
• Mangiferin Induces Apoptosis by Suppressing Bcl-xL and XIAP Expressions and Nuclear Entry of NF-kappa B in HL-60 Cells

  Kaori Shoji; Masanobu Tsubaki; Yuzuru Yamazoe; Takao Satou; Tatsuki Itoh; Yasuhiro Kidera; Yoshihiro Tanimori; Masashi Yanae; Hideaki Matsuda; Atsushi Taga; Haruyuki Nakamura; Shozo Nishida

  ARCHIVES OF PHARMACAL RESEARCH PHARMACEUTICAL SOC KOREA 34 (3) 469 - 475 0253-6269 2011/03 [Refereed]
   

  Mangiferin, 1,3,6,7-tetrahydroxyxanthone-C2-beta-D-glucoside (C-glucosylxanthone), is a xanthone derivative that is widely distributed in higher plants. Recently, mangiferin was found to exhibit potential antitumor effects. However, the molecular mechanisms of this effect have not been elucidated. In the present study, we attempt to clarify the mechanism of mangiferin-induced apoptosis in the human acute myeloid leukemia cell line HL-60; mangiferin was found to induce apoptosis. We also observed a concurrent increase in caspase-3 activity and DNA fragmentation. Furthermore, on examining the survival signals expressed during apoptotic induction, we observed that mangiferin caused a remarkable decrease in the nuclear entry of NF-kappa B p65. However, there were no changes in the expression of other survival signals, such as extracellular signal-regulated kinase 1/2, protein kinase B, and p38 mitogen-activated protein kinase. In addition, mangiferin suppressed the expressions of Bcl-xL and XIAP; however, we did not note any changes in the levels of Bcl-2, Bax, and Bim. These results indicate that mangiferin induces apoptosis by suppressing NF-kappa B activation and expressions of Bcl-xL and XAIP. These findings suggest that mangiferin may be useful as an anticancer agent and can be used in combination therapy with other anticancer drugs for the treatment of acute myeloid leukemia.
• Role of the Small GTPase Rho3 in Golgi/Endosome Trafficking through Functional Interaction with Adaptin in Fission Yeast

  Ayako Kita; Cuifang Li; Yang Yu; Nanae Umeda; Akira Doi; Mitsuko Yasuda; Shunji Ishiwata; Atsushi Taga; Yoshitaka Horiuchi; Reiko Sugiura

  PLOS ONE PUBLIC LIBRARY SCIENCE 6 (2) e16842  1932-6203 2011/02 [Refereed]
   

  Background: We had previously identified the mutant allele of apm1(+) that encodes a homolog of the mammalian mu 1A subunit of the clathrin-associated adaptor protein-1 (AP-1) complex, and we demonstrated the role of Apm1 in Golgi/endosome trafficking, secretion, and vacuole fusion in fission yeast. Methodology/Principal Findings: In the present study, we isolated rho3+, which encodes a Rho-family small GTPase, an important regulator of exocystosis, as a multicopy-suppressor of the temperature-sensitive growth of the apm1-1 mutant cells. Overexpression of Rho3 suppressed the Cl- sensitivity and immunosuppressant sensitivity of the apm1-1 mutant cells. Overexpression of Rho3 also suppressed the fragmentation of vacuoles, and the accumulation of v-SNARE Syb1 in Golgi/endosomes and partially suppressed the defective secretion associated with apm1-deletion cells. Notably, electron microscopic observation of the rho3-deletion cells revealed the accumulation of abnormal Golgi-like structures, vacuole fragmentation, and accumulation of secretory vesicles; these phenotypes were very similar to those of the apm1-deletion cells. Furthermore, the rho3-deletion cells and apm1-deletion cells showed very similar phenotypic characteristics, including the sensitivity to the immunosuppressant FK506, the cell wall-damaging agent micafungin, Cl-, and valproic acid. Green fluorescent protein (GFP)-Rho3 was localized at Golgi/endosomes as well as the plasma membrane and division site. Finally, Rho3 was shown to form a complex with Apm1 as well as with other subunits of the clathrin-associated AP-1 complex in a GTP- and effector domain-dependent manner. Conclusions/Significance: Taken together, our findings reveal a novel role of Rho3 in the regulation of Golgi/endosome trafficking and suggest that clathrin-associated adaptor protein-1 and Rho3 co-ordinate in intracellular transport in fission yeast. To the best of our knowledge, this study provides the first evidence of a direct link between the small GTPase Rho and the clathrin-associated adaptor protein-1 in membrane trafficking.
• Evaluation of brilliance and visibility of fluorescence and chemiluminescence solution for training of preparing injections

  Shunji Ishiwata; Atsushi Taga; Hiroyuki Sano; Masataka Kobayashi; Jun Nomiyama; Shiro Harada; Ayako Kita; Mitsutaka Takada; Reiko Sugiura

  Yakugaku Zasshi 131 (9) 1361 - 1367 0031-6903 2011 [Refereed]
   

  Personnel who prepare and administer chemotherapeutic agents have been reported to develop untoward effects. The use of appropriate techniques for preparing these agents is encouraged, and educational training systems that involve the use of a fluorescent or chemiluminescence reagent as placebos have been established to minimize potential exposure to these agents. However, the optimum conditions for the use and visibility of these placebos remain obscure. In this study, our results indicated that the fluorescence intensity of fluorescent reagent decreased when it was used at a concentration greater than 0.01%. Because drops created due to splashes and leaks are extremely small and easily evaporate, it is possible that the fluorescence resulting from such drops readily disappears despite using an anti-evaporation reagent. We also developed a method to evaluate the visibility of the small drop using this method, we determined the distance at which the drop present on the pin could be seen by the observer. The distance at which the drop was clearly recognized as a pinpoint by using the fluorescence method was almost comparable to that for the chemiluminescence method. In the chemiluminescence method, the drop on the pin was faintly visible as a slightly bright area because of low background when observed at a certain distance that was much greater than that at which the drop was clearly visible however, such an area was not observed in the fluorescence method. The results of our study will help in the selection of a training method depending on the situation. © 2011 The Pharmaceutical Society of Japan.
• Recovery of molybdenum from fly ash by gibbsite

  Fumihiko Ogata; Hisato Tominaga; Hitoshi Yabutani; Atsushi Taga; Naohito Kawasaki

  TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY TAYLOR & FRANCIS LTD 93 (4) 635 - 642 0277-2248 2011 

  The effectiveness of gibbsite (GB), an amorphous aluminum oxide, for the recovery of Mo(VI) from eluates of fly ash of two coal-fired thermal power stations and of roof tile waste was investigated. Upon the qualitative analysis of an eluate of fly ash, 16 elements were detected. Greater amounts of these elements were eluted under acidic conditions (pH 2) than from the neutral or basic eluate of fly ash. GB was used for the adsorption of Mo(VI). Equilibrium adsorption was reached within 1 min. Optimal solution acidity for the adsorption of Mo(VI) onto GB400 (calcined at 400 degrees C) was pH 2. The main adsorption mechanism was ion exchange with a number of hydroxyl groups of GB400. For repeated ad- and desorption of Mo(VI), GB400 could be used at least four times and the recovery percentage of Mo(VI) with sodium hydroxide solution as eluent surpassed 90%. Our results showed that GB400 was very effective for the recovery of Mo(VI) from fly ash.
• 核内核外輸送を介したRNA結合蛋白質Rnc1の制御機構

  SATO RYOSUKE; MATSUMURA YASUHIRO; UMEDA NANAE; TANAKA AKITOMO; TAKADA MAKOTO; KITA AYAKO; ISHIWATA SHUNJI; TAGA ATSUSHI; SUGIURA REIKO

  生化学 ROMBUNNO.3T10P-11  0037-1017 2011
• In vitro assay of the interaction between Rnc1 protein and Pmp1 mRNA by affinity capillary electrophoresis with a carboxylated capillary

  Atsushi Taga; Ryosuke Satoh; Shunji Ishiwata; Shuji Kodama; Atsushi Sato; Kentaro Suzuki; Reiko Sugiura

  JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS ELSEVIER SCIENCE BV 53 (5) 1332 - 1337 0731-7085 2010/12 [Refereed]
   

  The interaction between Rnc1, an RNA interactive protein, and a Pmp1 mRNA was investigated by affinity capillary electrophoresis (ACE). Prior to the ACE experiments, the column performances of three capillaries (an untreated fused silica capillary, a polybrene-polyacrylic acid (PB-PAA) double layer coating capillary, and a carboxylated capillary with a covalent modification) were studied with model proteins including ribonuclease B (RNase B) and bovine serum albumin (BSA) Using an untreated fused silica and a PB-PAA double layer coating capillaries, both of the protein peaks were broad and tailing. However, using a carboxylated capillary, the protein peaks were sharp and symmetric, and migration times were repeatable (RSD < 0 4%) Further, the proteins in human serum also gave sharp peaks and its repeatability was kept at a high level by pre-treatment of a capillary inner wall with 1 M sodium chloride solution before each run. An Rnc1 protein was analyzed by ACE with background electrolytes containing various concentrations of Pmp1 sense mRNA using a carboxylated capillary. Increase in the concentration of the mRNA was found to delay the migration time of the protein. But the migration time of the protein was kept constant with increasing Pmp1 anti-sense mRNA instead of Pmp1 sense mRNA A straight line (r=0.987) was obtained by plotting 1/(migration time shift) versus 1/(Pmp1 sense mRNA concentration) and the association constant of Rnc1 protein with Pmp1 sense mRNA could be estimated to be 4 15 x 10(6) M(-1). These results suggest that the association constants of proteins with mRNAs as ligands were easily determined by the proposed method. (C) 2010 Elsevier B.V. All rights reserved.
• Enantioseparation of DL-isocitric acid by a chiral ligand exchange CE with Ni(II)-D-quinic acid system

  Shuji Kodama; Atsushi Taga; Atsushi Yamamoto; Yuji Ito; Yoshitaka Honda; Kentaro Suzuki; Tomohisa Yamashita; Tomoko Kemmei; Sen-ichi Aizawa

  ELECTROPHORESIS WILEY-V C H VERLAG GMBH 31 (21) 3586 - 3591 0173-0835 2010/10 [Refereed]
   

  The ratio of citric acid to D-isocitric acid can be used to distinguish authentic and adulterated fruit juices. To separate DL-isocitric acid enantiomers, we used ligand exchange CE. D-Quinic acid was used as a chiral selector ligand and Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) ions were used as the central ions of the chiral selector in the BGE. DL-Isocitric acid was found to be enantioseparated with the above metal ions except for Mn(II) ion. The optimum running conditions for the analysis of D- and L-isocitric acids along with citric acid, an isomer of isocitric acid, were found to be a BGE (pH 5.0) containing 30% ACN, 20 mM acetic acid, 20 mM NiSO(4), and 80 mM D-quinic acid. Under these conditions, DL-isocitric and citric acids in fruit juices were analyzed successfully.
• キャピラリー電気泳動を通して見えた食品中におけるキラル化合物の動態

  多賀 淳; 小玉 修嗣; 山本 敦

  化学と生物 Japan Society for Bioscience, Biotechnology, and Agrochemistry 48 (4) 263 - 268 0453-073X 2010/04
• Metal(II)-ligand molar ratio dependence of enantioseparation of tartaric acid by ligand exchange CE with Cu(II) and Ni(II)-D-quinic acid systems

  Shuji Kodama; Sen-ichi Aizawa; Atsushi Taga; Tomohisa Yamashita; Tomoko Kemmei; Kentaro Suzuki; Yoshitaka Honda; Atsushi Yamamoto

  ELECTROPHORESIS WILEY-BLACKWELL 31 (6) 1051 - 1054 0173-0835 2010/03 [Refereed]
   

  Enantioseparation of tartaric acid by ligand exchange CE with a Cu(II)-D-quinic acid system was studied Racemic tartaric acid was enantioseparated by ligand exchange CE using BCEs containing relatively low Cu(II)-D-quinic acid molar ratios ranging from 1 1 to 1.3 and high molar ratios ranging from 1.8 to 1 12 but was not enantioseparated using BGEs with medium molar ratios ranging from 1 4 to 1 6 While the migration order of-D-tartaric acid was prior to L-tartaric acid at the lower Cu(II)-D-quinic acid molar ratios, the enantiomer migration order was reversed at the higher molar ratios. These results were compared with those for Ni(II)-D-quinic acid system The molar ratio dependence of enantiomer migration order can be attributed to a change in the coordination structure of Cu(II) ion with D-quinic acid.
• Role of the RNA-binding Protein Nrd1 and Pmk1 Mitogen-activated Protein Kinase in the Regulation of Myosin mRNA Stability in Fission Yeast

  Ryosuke Satoh; Takahiro Morita; Hirofumi Takada; Ayako Kita; Shunji Ishiwata; Akira Doi; Kanako Hagihara; Atsushi Taga; Yasuhiro Matsumura; Hideki Tohda; Reiko Sugiura

  MOLECULAR BIOLOGY OF THE CELL AMER SOC CELL BIOLOGY 20 (9) 2473 - 2485 1059-1524 2009/05 [Refereed]
   

  Myosin II is an essential component of the actomyosin contractile ring and plays a crucial role in cytokinesis by generating the forces necessary for contraction of the actomyosin ring. Cdc4 is an essential myosin II light chain in fission yeast and is required for cytokinesis. In various eukaryotes, the phosphorylation of myosin is well documented as a primary means of activating myosin II, but little is known about the regulatory mechanisms of Cdc4. Here, we isolated Nrd1, an RNA-binding protein with RNA-recognition motifs, as a multicopy suppressor of cdc4 mutants. Notably, we demonstrated that Nrd1 binds and stabilizes Cdc4 mRNA, thereby suppressing the cytokinesis defects of the cdc4 mutants. Importantly, Pmk1 mitogen-activated protein kinase (MAPK) directly phosphorylates Nrd1, thereby negatively regulating the binding activity of Nrd1 to Cdc4 mRNA. Consistently, the inactivation of Pmk1 MAPK signaling, as well as Nrd1 overexpression, stabilized the Cdc4 mRNA level, thereby suppressing the cytokinesis defects associated with the cdc4 mutants. In addition, we demonstrated the cell cycle-dependent regulation of Pmk1/Nrd1 signaling. Together, our results indicate that Nrd1 plays a role in the regulation of Cdc4 mRNA stability; moreover, our study is the first to demonstrate the posttranscriptional regulation of myosin expression by MAPK signaling.
• Role of the RNA-binding protein Nrd1 and Pmk1 mitogen-activated protein kinase in the regulation of myosin mRNA stability in fission yeast

  Ryosuke Satoh; Takahiro Morita; Hirofumi Takada; Ayako Kita; Shunji Ishiwata; Akira Doi; Kanako Hagihara; Atsushi Taga; Yasuhiro Matsumura; Hideki Tohda; Reiko Sugiura

  Molecular Biology of the Cell 20 (9) 2473 - 2485 1059-1524 2009/05 [Refereed]
   

  Myosin II is an essential component of the actomyosin contractile ring and plays a crucial role in cytokinesis by generating the forces necessary for contraction of the actomyosin ring. Cdc4 is an essential myosin II light chain in fission yeast and is required for cytokinesis. In various eukaryotes, the phosphorylation of myosin is well documented as a primary means of activating myosin II, but little is known about the regulatory mechanisms of Cdc4. Here, we isolated Nrd1, an RNA-binding protein with RNA-recognition motifs, as a multicopy suppressor of cdc4 mutants. Notably, we demonstrated that Nrd1 binds and stabilizes Cdc4 mRNA, thereby suppressing the cytokinesis defects of the cdc4 mutants. Importantly, Pmk1 mitogen-activated protein kinase (MAPK) directly phosphorylates Nrd1, thereby negatively regulating the binding activity of Nrd1 to Cdc4 mRNA. Consistently, the inactivation of Pmk1 MAPK signaling, as well as Nrd1 overexpression, stabilized the Cdc4 mRNA level, thereby suppressing the cytokinesis defects associated with the cdc4 mutants. In addition, we demonstrated the cell cycle-dependent regulation of Pmk1/Nrd1 signaling. Together, our results indicate that Nrd1 plays a role in the regulation of Cdc4 mRNA stability moreover, our study is the first to demonstrate the posttranscriptional regulation of myosin expression by MAPK signaling. © 2009 by The American Society for Cell Biology.
• 第3章3.5.電気泳動法

  多賀 淳

  NEW薬学機器分析（伊藤允好・萩中淳・和田昭盛編集） 222 - 236 2007/05
• 参考情報8 キャピラリー電気泳動法

  多賀 淳; 掛樋 一晃

  日本薬局方技術情報（JPTI）日本公定書協会編 じほう 273 - 279 2006/09
• Search for serum protein-binding disaccharides and disaccharide-binding serum proteins by affinity capillary electrophoresis

  A Taga; Y Yamamoto; R Maruyama; S Honda

  ELECTROPHORESIS WILEY-V C H VERLAG GMBH 25 (6) 876 - 881 0173-0835 2004/03 [Refereed]
   

  The potential use of affinity capillary electrophoresis in a microscale search for mutually interacting substances in biological fluid is demonstrated. Some disaccharides, especially gentiobiose (Gen), derivatized with 1-phenyl-3-methyl-5-pyrazolone, caused peak retardation when electrophoresed in a neutral running buffer, containing human serum. Gen, the most significantly retarded disaccharide, was converted to its negatively charged bis-mercaptoethanesulfonate derivative (MerESGen), and a serum sample was analyzed in a neutral buffer containing the derivatized disaccharide. Two peaks, belonging to the beta-globulin fraction, were found to be remarkably retarded in the buffer containing MerES-Gen in a concentration-dependent way. These findings prove an interaction between disaccharides and serum proteins.
• Affinity capillary electrophoresis of oligosaccharides.

  Taga A; Honda S

  Methods in molecular biology (Clifton, N.J.) 213 121 - 130 1064-3745 2003 [Refereed]
  
• Determination of association constant of carbohydrate-protein interaction.

  Taga A; Honda S

  Methods in molecular biology (Clifton, N.J.) 213 275 - 284 1064-3745 2003 [Refereed]
  
• Studies of carbohydrate-protein interaction by capillary electrophoresis

  S Honda; A Taga

  RECOGNITION OF CARBOHYDRATES IN BIOLOGICAL SYSTEMS PT A: GENERAL PROCEDURES ACADEMIC PRESS INC 362 434 - 454 0076-6879 2003 [Refereed]
  
• Colominic acid: a novel chiral selector for capillary electrophoresis of basic drugs

  YX Du; A Taga; S Suzuki; WY Liu; S Honda

  JOURNAL OF CHROMATOGRAPHY A ELSEVIER SCIENCE BV 962 (1-2) 221 - 231 0021-9673 2002/07 [Refereed]
   

  We introduced colominic acid as a new chiral selector for capillary electrophoresis of basic drugs. Use of a low concentration phosphate buffer containing this polysaccharide and a Polybrene/colominic acid double coated capillary allowed excellent separation of the enantiomers of primaquine, chloroquine and tryptophan. Other drugs giving partial enantioseparation include laudanosine and salbutamol. Capillary coating with Polybrene followed by colominic acid eliminated the problems of peak tailing and low reproducibility of migration time in uncoated capillaries. The optimum pH was in the acidic region but varied among drugs. A low capillary temperature of 16 degreesC and a colominic acid concentration of 9 w/v% are recommended for practical analysis of these drugs. Colominic acid preparations having higher molecular masses gave better enantioseparation, and N-acletylneuraminic acid, the component monosaccharide, did not give any enantioseparation. (C) 2002 Elsevier Science B.V. All rights reserved.

Books etc

• 放射性物質対策技術 : 除去、モニタリング、装置・システム開発

  森田 昌敏; 三村均; 熊沢紀之; 矢野勝彦; 青野宏通; 槇田洋二; 苑田晃成; 山田裕久; 横山 信吾; 伊藤健一; 佐藤努; 万福裕造; 八田珠郎; 多賀淳; 石川彰彦; 村上秀樹; 菊池良栄; 金原 和秀 エヌ・ティー・エス 2015 9784860434151
• 医歯薬系学生のためのillustrated基礎科学, 第11章

  京都廣川書店 2009
• 医歯薬系学生のためのillustrated基礎科学, 第10章

  京都廣川書店 2009
• 医歯薬系学生のためのillustrated基礎科学, 第9章

  京都廣川書店 2009
• 医師薬系学生のためのillusｔrated基礎化学

  掛樋 一晃; 田邉 元三; 久保 兼信; 岡部 亘雄; 多賀 淳; 桑島 博 (Joint work)京都廣川書店 2008/10
• 医歯薬系学生のための「基礎化学」京都廣川書店

  桑島 博; 田邊元三; 岡部亘雄; 久保兼信; 多賀 淳 (Joint work)2008/10
• NEW薬学機器分析, 222-236

  廣川書店 2007
• 日本薬局方技術情報（JPTI）日本公定書協会編, 273-279

  じほう 2006
• Methods in Enzymology, Vol. 362, chapter 30

  Academic Press 2003
• Capillary Electrophoresis of Carbohydrate (Methods in Molecular Biology, Vol. 213), chapter 16

  Humana Press Inc. 2003
• Capillary Electrophoresis of Carbohydrate (Methods in Molecular Biology, Vol. 213), chapter 8

  Humana Press Inc. 2003
• Capillary Electrophoresis of Carbohydrate (Methods in Molecular Biology, Vol. 213) edited by P. Thibault and S. Honda

  Humana Press Inc 2003
• Capillary Electrophoresis of Carbohydrate (Methods in Molecular Biology, Vol. 213) edited by P. Thibault and S. Honda

  Humana Press Inc 2003
• Carbohydrate Analysis by modern Chromatography and Electrophoresis, chapter 19

  Elsevier Science B. V. 2002
• Carbohydrate Analysis by modern Chromatography and Electrophoresis

  Elsevier Science B. V. 2002

Conference Activities & Talks

• 抗がん剤汚染防止用ゴム栓「もれま栓」の検討  [Not invited]

  杉浦 麗子; 石渡 俊二; 多賀 淳; 西田 升三; 喜多 綾子; 藤田 秀樹

  日本薬学会第132年会  2012/03  北海道  日本薬学会第132年会
  
• 抗がん剤汚染を防止する注射剤バイアル用ゴム栓「もれま栓」プロトタイプの開発  [Not invited]

  杉浦 麗子; 石渡 俊二; 多賀 淳; 西田 升三; 喜多 綾子; 藤田 秀樹

  第21回日本医療薬学会年会  2011/10  神戸  第21回日本医療薬学会年会
  
• キャピラリー電気泳動を用いる容器個別での注射剤容器からの漏液量低コスト簡易測定法の開発  [Not invited]

  杉浦 麗子; 多賀 淳; 石渡 俊二; 西田 升三; 喜多 綾子; 藤田 秀樹

  第21回日本医療薬学会年会  2011/10  神戸  第21回日本医療薬学会年会
  
• 新教材を用いた抗がん剤調製トレーニング 薬学実務実習事前学習における応用  [Not invited]

  杉浦 麗子; 石渡 俊二; 多賀 淳; 喜多 綾子; 髙田 充隆; 森 卯京; 西山; 佐野 裕之; 小林; 正隆; 原田 士朗; 小泉 祐一; 荒井 真美子; 藤原 琴; 亀本; 上田 和正; 三上; 大隅 奈奈; 池田 久雄; 稲井 恵子; 河内 昭人

  第21回日本医療薬学会年会  2011/10  神戸  第21回日本医療薬学会年会
  
• MAPKシグナル依存的なRNA結合蛋白質Nrd1によるStress Granule形成機構  [Not invited]

  杉浦 麗子; 多賀 淳; 石渡 俊二; 喜多 綾子; 谷 時雄; 林 紗千子; 佐藤 亮介; 森田 貴大; 松村 康弘; 田中 章友; 高田 真琴; 萩原 加奈子

  2011/09
• MAP kinase signaling regulates stress granule formation via the RNA-binding protein Nrd1  [Not invited]

  杉浦 麗子; 石渡 俊二; 喜多 綾子; 谷 時雄; 林 紗千子; 佐藤 亮介; 森田 貴大; 松村 康弘; 田中 章友; 髙田 真琴; 梅田 奈苗; 土井 章; 萩原 加奈子; 多賀 淳

  2011/06
• MAP kinase signaling-dependent regulation of stress granule formation mediated by the RNA-binding protein Nrd1 in fission yeast  [Not invited]

  杉浦 麗子; 喜多 綾子; 石渡 俊二; 多賀 淳; 佐藤 亮介; 森田 貴大; 高田 宏文; 梅田 奈苗; 土井 章; 萩原 加奈子; 松村 康弘; 田中 章友; 髙田 真琴; 谷 時雄; 林 紗千子

  2011/06
• 抗がん剤汚染防止バイアル用ゴム栓「もれま栓」プロトタイプの開発  [Not invited]

  杉浦 麗子; 喜多 綾子; 石渡 俊二; 多賀 淳; 西田 升三; 藤田 秀樹

  2011/03
• 化学発光を用いた抗がん剤調製トレーニングキット「ルフテック」による抗がん剤汚染危険箇所の検討  [Not invited]

  杉浦 麗子; 髙田 充隆; 喜多 綾子; 石渡 俊二; 多賀 淳; 佐野 裕之; 小林 正隆; 原田 士朗; 小泉 祐一; 森 卯京; 西山 辰美; 荒井 真美子; 藤原 琴; 亀本 浩司; 上田 和正; 三上 正; 大隅 奈奈; 池田 久雄; 稲井 恵子; 河内 昭人

  2011/03
• キャピラリー電気泳動を用いる個々の注射剤容器からの漏液量低コスト簡易測定法の開発  [Not invited]

  杉浦 麗子; 石渡 俊二; 喜多 綾子; 西田 升三; 多賀 淳; 藤田 秀樹

  2011/03
• RNA結合蛋白質Nrd1はMAPKシグナル依存的にstress granule形成を制御する  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 萩原 加奈子; 松村 康弘; 田中 章友; 多賀 淳; 谷 時雄; 林; 紗千

  RNAフロンティアミーティング  2010/09  静岡  RNAフロンティアミーティング
  
• レーザー励起蛍光検出キャピラリー電気泳動を用いる不均一性タンパク質の結合能評価  [Not invited]

  多賀 淳; 杉浦 麗子; 上林 大起; 小玉 修嗣; 佐藤 睦; 鈴木 健太郎; 居迫 正和

  日本分析化学会第59年会  2010/09  仙台  日本分析化学会第59年会
  
• Simultaneous Binding Assay of Microheterogenious Proteins by Capillary Electrophoresis with Laser Induced Fluorescence Detection  [Not invited]

  多賀 淳; 杉浦 麗子; 上林 大起; 梅田 奈苗; 小玉 修嗣; 佐藤 睦; 鈴木 健太郎; 居迫 正和

  16th International Symposium on Separation Science  2010/09  Rome  16th International Symposium on Separation Science
  
• RNA結合蛋白質Nrd1はMAPKシグナル依存的にStress Granule形成を制御する  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 萩原 加奈子; 松村 康弘; 田中 章友; 多賀 淳; 谷 時雄; 林; 沙千

  酵母遺伝学フォーラム 第43回研究報告会  2010/09  なら  酵母遺伝学フォーラム 第43回研究報告会
  
• 核内核外輸送を介したRNA結合タンパク質Rnc1の機能解析  [Not invited]

  杉浦 麗子; 松村 康弘; 佐藤 亮介; 田中 章友; 喜多 綾子; 梅田 奈苗; 石渡 俊二; 多賀 淳

  第12回日本RNA学会年会  2010/07  東京  第12回日本RNA学会年会
  
• RNA結合蛋白質Nrd1はMAPKシグナル依存的に環境ストレス応答を制御する  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 萩原 加奈子; 松村 康弘; 田中 章友; 多賀 淳; 谷 時雄; 林; 紗千; 東田 英毅

  第1回RNA Study Meeting 本会  2010/07  東京  第1回RNA Study Meeting 本会
  
• MAP Kinase Signaling Dependent Regulation of Cell Fate Mediated by the RNA-binding protein Nrd1 in Fission yeast  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 土井 章; 萩原 加奈子; 松村 康弘; 田中 章友; 多賀 淳; 新名主 カオリ

  The 19th CDB Meeting RNA Sciences in Cell and Developmental Biology  2010/05  神戸  The 19th CDB Meeting RNA Sciences in Cell and Developmental Biology
  
• 化学発光を用いた注射剤混合トレーニングシステムの開発  [Not invited]

  杉浦 麗子; 石渡 俊二; 多賀 淳; 森田 貴大; 喜多 綾子; 髙田 充隆; 佐野 裕之; 小林 正隆; 野見 山淳; 原田 士郎; 小泉 祐一; 野村 真美; 森 卯京; 西山 辰美; 荒井 真美子

  日本薬学会第130年会  2010/03  岡山  日本薬学会第130年会
  
• RNA結合タンパク質Nrd1はMAPキナーゼシグナル依存的に細胞運命を制御する  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 土井 章; 萩原 加奈子; 松村 康弘; 田中 章友; 多賀 淳; 東田 英毅

  日本薬学会第130年会  2010/03  岡山  日本薬学会第130年会
  
• アフィニティーキャピラリー電気泳動によるRNA―GFP-タンパク質間相互作用の観察  [Not invited]

  多賀 淳; 石渡 俊二; 杉浦 麗子; 佐藤 亮介; 小玉 修嗣; 佐藤 睦; 鈴木 健太郎

  日本薬学会第130回年会  2010/03  岡山  日本薬学会第130回年会
  
• 分裂酵母におけるRNA結合タンパク質Nrd1によるMAPキナーゼシグナル依存的な細胞運命制御機構  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 土井 章; 萩原 加奈子; 松村 康弘; 多賀 淳; 東田 英毅

  第11回 日本RNA学会年会  2009/10  新潟  第11回 日本RNA学会年会
  
• MAPキナーゼによるリン酸化依存的なRNA結合タンパク質Nrd1の細胞運命制御機構  [Not invited]

  杉浦 麗子; 佐藤 亮介; 森田 貴大; 高田 宏文; 喜多 綾子; 石渡 俊二; 土井 章; 萩原 加奈子; 松村 康弘; 多賀 淳

  第82回日本生化学会大会  2009/10  神戸  第82回日本生化学会大会
  
• クラスリンアダプター複合体μ1サブユニットApm1の制御因子としての低分子量Gタンパク質Rho3の発見とゴルジ・エンドゾームにおける働き  [Not invited]

  杉浦 麗子; 李 翠芳; 喜多 綾子; 安田 光都子; 于 陽; 山本 恭平; 多賀 淳; 石渡 俊二

  第59回 日本薬学会近畿支部総会・大会  2009/10  大阪  第59回 日本薬学会近畿支部総会・大会
  
• キャピラリー電気泳動によるメープルシロップおよびメープルシュガー中の還元糖の分析  [Not invited]

  多賀 淳; 小玉修嗣; 川木秀子

  日本薬学会第129年会  2009/03  京都  日本薬学会第129年会
  
• 中心イオンにNi(II)イオンを用いたキラル配位子交換キャピラリー電気泳動  [Not invited]

  多賀 淳; 小玉修嗣; 山本敦; 山下智富; 健名智子; 鈴木健太郎; 誉田佳孝

  日本薬学会第129年会  2009/03  京都  日本薬学会第129年会
  
• N-ニトロソアミンの不溶性食物繊維への収着に及ぼす水溶性食物繊維の影響  [Not invited]

  北小路 学; 三好広朗; 川崎裕美; 森川 晋; 多賀 淳; 坊木 佳人; 富田 浩

  日本薬学会第129年会  2009/03  京都  日本薬学会第129年会
  
• Observation of Interaction between RNA and GFP-Protein by Affinity Capillary Electrophoresis  [Not invited]

  多賀 淳; 石渡 俊二; 杉浦 麗子; 佐藤 亮介; 小玉 修嗣; 佐藤 睦; 鈴木 健太郎

  29 th International Symposium on the ?Separation of Proteins, Peptides and Polynucleotides  2008/09  Delray beach  29 th International Symposium on the ?Separation of Proteins, Peptides and Polynucleotides
  
• Study of RNA-protein interaction in MAP kinase signaling by affinity capillary electrophoresis with a carboxylated capillary  [Not invited]

  多賀 淳; 石渡 俊二; 杉浦 麗子; 佐藤 睦; 鈴木 健太郎; 小玉 修嗣; 佐藤 亮介

  28 th International Symposium on the ?Separation of Proteins, Peptides and Polynucleotides  2008/09  Baden-Baden  28 th International Symposium on the ?Separation of Proteins, Peptides and Polynucleotides
  
• アフィニティーキャピラリー電気泳動によるRNA-RNA結合性タンパク質の結合定数測定  [Not invited]

  多賀 淳; 石渡 俊二; 杉浦 麗子; 佐藤睦; 鈴木健太郎; 小玉修嗣; 森田貴大

  日本薬学会第128年会  2008/03  横浜  日本薬学会第128年会
  
• タバコ及びその煙中におけるニコチン・アルカイド類の光学異性体分析  [Not invited]

  多賀 淳; 小玉修嗣; 森川敦詞; 中込和哉; 山本敦; 佐藤睦; 鈴木健太郎; 山下智富; 健名智子; 高柳信孝

  日本薬学会第128年会  2008/03  横浜  日本薬学会第128年会
  
• キャピラリー電気泳動による抗体医薬品の品質管理  [Not invited]

  多賀 淳; 木下 充弘; 掛樋 一晃; 北 荘一郎; 佐藤 睦; 鈴木 健太郎; 小玉 修嗣

  第18回クロマトグラフィー科学会議  2007/11  函館  第18回クロマトグラフィー科学会議
  
• Development of a novel type capillary for protein analysis by capillary electrophoresis  [Not invited]

  多賀 淳; 石渡 俊二; 杉浦 麗子; 誉田 佳孝; 佐藤 睦; 寺島 弘之; 鈴木 健太郎; 小玉 修嗣; 森田 貴大

  EUROanalysis XIV  2007/09  Antwerp  EUROanalysis XIV
  
• 化学修飾シリカキャピラリーを利用する抗体医薬品のキャピラリー電気泳動  [Not invited]

  多賀 淳; 木下 充弘; 掛樋 一晃; 北荘一郎; 佐藤睦; 鈴木健太郎; 小玉修嗣; 鴨田聡

  第27回日本糖質学会年会  2007/08  福岡  第27回日本糖質学会年会
  
• キャピラリー電気泳動によるニトロソアミンの分析  [Not invited]

  多賀 淳; 西智子; 誉田佳孝; 佐藤睦; 鈴木健太郎; 寺島弘之; 小玉修嗣

  日本薬学会第127年会  2007/03  富山  日本薬学会第127年会
  
• ビール中におけるイソキサントフモールの光学分割  [Not invited]

  多賀 淳; 小玉修嗣; 山下智富; 健名智子; 齊藤行雄; 誉田佳孝; 佐藤睦; 鈴木健太郎; 寺島弘之; 山本敦

  日本薬学会第127年会  2007/03  富山  日本薬学会第127年会
  
• 硫酸化キャピラリーを用いるニトロソアミンの高速CE分析  [Not invited]

  多賀 淳; 西 智子; 坊木 佳人

  第17会クロマトグラフィー科学会議  2006/11  仙台  第17会クロマトグラフィー科学会議
  
• N-ニトロソアミンの不溶性食物繊維による収着  [Not invited]

  多賀 淳; 北小路 学; 西 智子; 坊木 佳人

  フォーラム2006衛生薬学・環境トキシコロジー  2006/10  東京  フォーラム2006衛生薬学・環境トキシコロジー
  
• ニトロソアミンの不溶性食物繊維による収着  [Not invited]

  西 智子; 多賀 淳; 北小路 学; 坊木 佳人

  衛生薬学・環境トキシコロジー  2006/10  衛生薬学・環境トキシコロジー
  
• 還元性単糖誘導体のボロスピラン形成に基づくキラル分離  [Not invited]

  多賀 淳; 小玉 修嗣; 會澤 宣一; 山本 敦; 山下 智富; 健名 智子; 齊藤 行雄

  日本分析化学会 第55年会  2006/09  大阪  日本分析化学会 第55年会
  
• 保険薬局および病院実務実習に対する学生の意識調査  [Not invited]

  北小路 学; 石渡 俊二; 石本 真美子; 船上 仁範; 八軒 浩子; 多賀 淳; 八木秀樹; 和田 哲幸; 田邉 元三; 市田 成志; 西田 升三

  日本社会薬学会第25年会  2006/09  徳島  日本社会薬学会第25年会
  
• Reproducible Analysis of Carbohydrate Derivatives by Capillary Electrophoresis  [Not invited]

  多賀 淳; 寺島弘之; 誉田佳孝; 小玉修嗣; 本田進

  XXIIIrd International carbohydrate symposium (ICS2006)  2006/07  Whistler, Canada  XXIIIrd International carbohydrate symposium (ICS2006)
  
• タンパク質分析用キャピラリーの開発  [Not invited]

  多賀 淳; 誉田佳孝; 寺島弘之; 佐藤睦; 鈴木健太郎; 小玉修嗣

  第13回クロマトグラフィーシンポジウム  2006/06  東京  第13回クロマトグラフィーシンポジウム
  
• キャピラリー電気泳動におけるタンパク質分析用カラムの評価  [Not invited]

  多賀 淳; 寺島弘之; 誉田佳孝; 小玉修嗣

  日本薬学会第126年会  2006/03  仙台  日本薬学会第126年会
  
• 還元性単糖のボロスピラン形成に基づくキラル分離  [Not invited]

  多賀 淳; 小玉修嗣; 山下智富; 健名智子; 齊藤行雄; 會澤宣一; 山本敦

  日本薬学会第126年会  2006/03  仙台  日本薬学会第126年会
  
• 奨励賞受賞講演「カラム内化学的・物理化学的反応を伴うキャピラリー電気泳動の研究」  [Not invited]

  多賀 淳

  第15回クロマトグラフィー科学会議  2005/11  岐阜  第15回クロマトグラフィー科学会議
  
• CAPILLARY ELECYTROPHORESIS OF NEUTRAL CARBOHYDRATES  [Not invited]

  多賀 淳; 本田 進; 鈴木 茂生; 花谷 克昌

  4th Separation in the BioScienses (SBS’05)  2005/09  Utrecht  4th Separation in the BioScienses (SBS’05)
  
• HIGH SENSITIVE ANALYSIS OF CARBOHYDRATE DERIVATIVES BY CAPILLARY ELECTROPHORESIS USING IN-CAPILLARY SAMPLE CONCENTRATION  [Not invited]

  多賀 淳; 本田 進; 杉本 詩子

  4th Separation in the BioScienses (SBS’05)  2005/09  Utrecht  4th Separation in the BioScienses (SBS’05)
  
• オンライン試料濃縮を用いる機能性物質のアフィニティーキャピラリー電気泳動／MULDI-TOF-MS迅速分析  [Not invited]

  多賀 淳; 本田 進; 篠原 正樹

  第12回クロマトグラフィーシンポジウム  2005/05  福岡  第12回クロマトグラフィーシンポジウム
  
• スルホン酸基修飾キャピラリーの評価  [Not invited]

  多賀 淳; 本田 進; 寺島 弘之; 誉田; 小玉 修嗣

  第12回クロマトグラフィーシンポジウム  2005/05  福岡  第12回クロマトグラフィーシンポジウム
  
• 新規なキャピラリーの開発  [Not invited]

  多賀 淳; 本田 進; 小玉 修嗣; 山本 敦; 松永; 寺島 弘之; 誉田

  日本薬学会第125年会  2005/03  東京  日本薬学会第125年会
  
• キャピラリー電気泳動による重金属類の高感度検出  [Not invited]

  多賀 淳; 本田 進; 松尾 圭造; 西脇 敬二; 山谷 雅子

  日本薬学会第125年会  2005/03  東京  日本薬学会第125年会
  
• インキャピラリー試料濃縮による金属イオンの超微量検出―UV検出用新規キレート試薬3,3-bis(2-hydroxyethyl)-1-(4-methoxyphenyl)triazeneの利用―  [Not invited]

  多賀 淳; 本田 進; 松尾 圭造; 西脇 敬二; 鈴木 有希子

  第15回クロマトグラフィー科学会議  2004/11  東京  第15回クロマトグラフィー科学会議
  
• Capillary Electrophoresis of Human Erythrocytes for Observation of Their Interaction with Lectins  [Not invited]

  多賀 淳; 本田 進; 鈴木 茂生; 梅村 幸恵

  ASIANALYSIS VII  2004/07  Hong Kong  ASIANALYSIS VII
  
• ミニシンポジウム「ポストゲノム時代に於ける分析科学の挑戦」糖鎖・タンパク質機能の微量迅速分析  [Not invited]

  多賀 淳; 本田 進

  日本薬学会第124年会  2004/03  大阪  日本薬学会第124年会
  

MISC

• メープルシロップ中タンパク質成分は新規大腸癌治療薬開発の標的となり得る(Protein components of maple syrup as a potential source to develop novel anti-cancer drugs for colorectal cancer)

  山本 哲志; 森山 由瑛; 三田村 邦子; 多賀 淳  日本癌学会総会記事  77回-  2200  -2200  2018/09
• LC‐MS/MSを用いたTCA回路代謝物の一斉分析

  佐藤完太; 山口真史; 山本哲志; 三田村邦子; 多賀淳  JSBMS Letters  43-  (Supplement)  139  2018/08
• ホルマリン固定パラフィン包埋大腸癌組織を用いた新規大腸癌診断マーカーの探索とその定量法の開発

  山本 哲志; 工藤 光洋; 橋本 知樹; 三田村 邦子; 内藤 善哉; 多賀 淳  JSBMS Letters  43-  (Suppl.)  66  -66  2018/08
• ショットガンプロテオミクス解析を用いた糖尿病白内障要因の解析

  大竹 裕子; 山本 哲志; 三田村 邦子; 多賀 淳; 長井 紀章  日本薬学会年会要旨集  138年会-  (3)  243  -243  2018/03
• ショットガンプロテオミクス解析を用いた糖尿病白内障要因の解析

  大竹 裕子; 山本 哲志; 三田村 邦子; 多賀 淳; 長井 紀章  日本薬学会年会要旨集  138年会-  (3)  243  -243  2018/03
• クロマグロ抽出コラーゲンの悪性黒色腫細胞増殖への影響の検討

  久保田千晶; 山本哲志; 多賀淳  日本薬学会年会要旨集(CD-ROM)  138th-  ROMBUNNO.27PA‐am281  2018
• プロテオーム解析によるすっぽんコラーゲンのヒト皮膚角化細胞への影響の検討

  山本哲志; 中西紗緒理; 三田村邦子; 多賀淳  日本薬学会年会要旨集(CD-ROM)  138th-  ROMBUNNO.27PA‐am384  2018
• 各種温度下におけるシクロホスファミドの最大ガス化量

  遠藤晋吾; 遠藤晋吾; 石渡俊二; 山本理恵; 北野里佳; 藤本美弥; 山本哲志; 多賀淳; 升永早紀; 益子高; 福田由之; 安井友佳子; 石坂敏彦; 井上知美; 小竹武  日本薬学会年会要旨集(CD-ROM)  138th-  (4)  ROMBUNNO.28PA‐am347S  -141  2018
• 細胞外基質lumicanの膵臓癌特異糖鎖修飾を標的とした新規治療法の開発

  山本哲志; 多賀淳; 三田村邦子  大和証券ヘルス財団研究業績集  40-  93‐96  2017/03
• 細胞外基質Lumicanの発現抑制による新規膵臓癌細胞増殖抑制法の開発

  山本哲志; 谷田和香奈; 橋本知樹; 三田村邦子; 多賀淳  日本薬学会年会要旨集(CD-ROM)  137th-  ROMBUNNO.25PB‐am180  2017
• 保湿化粧品材料コラーゲンの物理的保水能検証法

  久保田千晶; 北村真巳; 山本哲志; 松川泰治; 土井聡; 鹿島康浩; 多賀淳  日本薬学会年会要旨集(CD-ROM)  137th-  ROMBUNNO.26Q‐pm15S  2017
• 新規大腸癌治療薬開発のためのメープルシロップ中抗腫瘍成分の同定

  山本 哲志; 澁路 龍大; 三田村 邦子; 多賀 淳  日本癌学会総会記事  75回-  P  -1276  2016/10
• 大腸がん細胞の細胞増殖におけるメープルシロップの役割について

  久保田 千晶; 山本 哲志; 三田村 邦子; 多賀 淳  日本癌学会総会記事  75回-  P  -1277  2016/10
• LC/ESI‐MSによる乾燥ろ紙尿中糖質コルチコイド代謝物スクリーニング法の開発

  三田村邦子; 森莉子; 上田麻美子; 亀井美希; 山本哲志; 多賀淳  日本薬学会年会要旨集(CD-ROM)  136th-  (2)  ROMBUNNO.28AB‐AM342  -265  2016/03
• ショットガンプロテオミクス解析に基づく,大腸癌における新規治療標的CyclophilinAの役割。

  高倉英樹; 山本哲志; 三田村邦子; 工藤光洋; 内藤善哉; 多賀淳  日本薬学会年会要旨集(CD-ROM)  136th-  (4)  ROMBUNNO.28O-PM03S  -73  2016/03
• メープルシロップ投与による大腸癌細胞増殖抑制機構の検討

  山本哲志; 三田村邦子; 多賀淳  日本薬学会年会要旨集(CD-ROM)  136th-  (4)  ROMBUNNO.27AB‐PM272  -204  2016/03
• スッポンからのコラーゲン抽出法の最適化

  久保田千晶; 山本哲志; 上村健太郎; 澤岻有喜; 三田村邦子; 多賀淳  日本薬学会年会要旨集(CD-ROM)  136th-  (2)  ROMBUNNO.28R-AM07  -60  2016/03
• Removal of Radioactive Cesium from Soil by Ammonium Citrate Solution and Ionic Liquid

  ISHIWATA SHUNJI; TAGA ATSUSHI; OGATA FUMIHIKO; KITAKOJI MANABU; OUCHI HIDEKAZU; YAMANISHI HIROKUNI; INAGAKI MASAYO  スマートプロセス学会誌  4-  (6)  294  -297  2015/11
• ホルマリン固定パラフィン包埋大腸癌組織を用いたプロテオーム解析によるバイオマーカーの探索

  山本 哲志; 工藤 光洋; 彭 為霞; 高田 英志; 三田村 邦子; 多賀 淳; 内藤 善哉  日本癌学会総会記事  74回-  P  -1358  2015/10
• 大腸癌細胞の増殖・浸潤におけるメープルシロップの効果

  久保田 千晶; 山本 哲志; 三田村 邦子; 多賀 淳  日本癌学会総会記事  74回-  P  -1308  2015/10
• 環境負荷の小さな化学物質を用いた土壌中放射性セシウムの溶出の検討

  石渡 俊二; 多賀 淳; 緒方 文彦; 北小路 学; 山西 弘城; 稲垣 昌代; 伊藤 哲夫; 古川 道郎  日本保健物理学会研究発表会講演要旨集  48回-  114  -114  2015/07
• メープルシロップを用いた大腸癌抗腫瘍効果の検討

  YAMAMOTO TETSUSHI; UEMURA KENTARO; MITAMURA KUNIKO; TAGA ATSUSHI  日本薬学会年会要旨集(CD-ROM)  135th-  ROMBUNNO.27H-PM14  2015
• LC/ESI‐MS/MSによる尿中抱合型テトラヒドロコルチコステロイドのプロファイル分析

  MITAMURA KUNIKO; UEDA MAMIKO; YAMAMOTO TETSUSHI; TAGA ATSUSHI; IKEGAWA SHIGEO  日本薬学会年会要旨集(CD-ROM)  135th-  ROMBUNNO.27PA-PM087  2015
• LC/ESI‐LIT‐MS/MSにおけるPQD及びCID測定による尿中硫酸抱合型ステロイドの分析

  三田村邦子; 蔵渕慧; 上田麻美子; 池川繁男; 山本哲志; 多賀淳  JSBMS Lett  39-  (Supplement)  62  2014/09
• ホルマリン固定パラフィン包埋大腸癌組織を用いた新規治療標的の探索(Proteomic analysis of formalin-fixed paraffin-embedded colorectal cancer tissue for identification of therapeutic target)

  山本 哲志; 工藤 光洋; 彭 為霞; 高田 英志; 三田村 邦子; 多賀 淳; 内藤 善哉  日本癌学会総会記事  73回-  P  -3254  2014/09
• Maple syrupの大腸癌抑制作用(Anti-cancer Effect of Maple Syrup for Colorectal Cancer)

  上村 健太朗; 山本 哲志; 三田村 邦子; 多賀 淳  日本癌学会総会記事  73回-  P  -2416  2014/09
• 28-O3AM-14 抗がん剤汚染防止用「もれま栓キャップ」の開発(医療安全(その他),一般演題(口頭),新時代を拓く医療薬学フロンティア)

  石渡 俊二; 多賀 淳; 藤田 秀樹; 井上 知美; 小竹 武; 長谷川 満  日本医療薬学会年会講演要旨集  24-  (0)  237  -237  2014/08
• メープルシュガーにおける血糖値上昇抑制効果

  多賀淳; 長井紀章; 山本哲志; 三田村邦子; 伊藤吉將  日本薬学会年会要旨集(CD-ROM)  134th-  ROMBUNNO.28AML-101  2014
• プロテオーム解析を用いたlumicanの膵臓癌細胞増殖制御機構の解析

  山本哲志; 木場克斗; 三田村邦子; 工藤光洋; 内藤善哉; 多賀淳  日本薬学会年会要旨集(CD-ROM)  134th-  ROMBUNNO.30PML-136  2014
• LC/ESI‐MS/MSによるラット胆汁中抱合型フェニル酢酸の同定

  三田村邦子; 大橋勇斗; 山本哲志; 多賀淳; 池川繁男  日本薬学会年会要旨集(CD-ROM)  134th-  ROMBUNNO.29AML-070  2014
• ショットガンプロテオミクス解析による大腸癌早期発見のための新規診断マーカーの探索

  上村健太朗; 山本哲志; 三田村邦子; 工藤光洋; 内藤善哉; 多賀淳  日本薬学会年会要旨集(CD-ROM)  134th-  ROMBUNNO.30PML-139S  2014
• 福島第1原子力発電所事故に起因する土壌中放射性セシウムの分布,溶出,吸着に関する研究

  YAMANISHI HIROKUNI; INAGAKI MASAYO; WAKABAYASHI GEN'ICHIRO; HOHARA SHIN'YA; ITO TETSUO; ISHIWATA SHUNJI; TAGA ATSUSHI; OGATA FUMIHIKO; FURUKAWA MICHIO  日本保健物理学会研究発表会講演要旨集  46th-  136  2013/06
• 土壌中放射性セシウムの溶出に関する研究

  山西弘城; 稲垣昌代; 石渡俊二; 多賀淳; 若林源一郎; 芳原新也; 伊藤哲夫  日本原子力学会春の年会予稿集(CD-ROM)  2013-  2013
• セシウムを99%以上取り除く「ゼオCa漆喰」

  TAGA ATSUSHI; ISHIWATA SHUNJI; OGATA FUMIHIKO; SATO YOICHI; MORIMURA TSUYOSHI  日本薬学会年会要旨集(CD-ROM)  133rd-  ROMBUNNO.29PME-095  2013
• 抗がん剤汚染を防止する注射剤バイアル用ゴム栓「もれま栓」プロトタイプの開発(一般演題(口頭)20,がん薬物療法(その他),Enjoy Pharmacists' Lifestyles)

  石渡 俊二; 多賀 淳; 藤田 秀樹; 西田 升三; 喜多 綾子; 杉浦 麗子  日本医療薬学会年会講演要旨集  21-  155  -155  2011/09
• P-0321 注射剤調製時における注射針の違いによる漏液量の影響(一般演題 ポスター発表,がん薬物療法(その他),Enjoy Pharmacists' Lifestyles)

  多賀 淳; 石渡 俊二; 藤田 秀樹; 西田 升三; 喜多 綾子; 杉浦 麗子  日本医療薬学会年会講演要旨集  21-  235  -235  2011/09
• P-1174 新教材を用いた抗がん剤調製トレーニング : 薬学実務実習事前学習における応用(一般演題 ポスター発表,薬学教育(実務実習),Enjoy Pharmacists' Lifestyles)

  森 卯京; 石渡 俊二; 多賀 淳; 佐野 裕之; 小林 正隆; 原田 士朗; 小泉 祐一; 荒井 真美子; 藤原 琴; 亀本 浩司; 上田 和正; 大隅 奈奈; 池田 久雄; 稲井 恵子; 河内 昭人; 西山 辰美; 三上 正; 喜多 綾子; 高田 充隆; 杉浦 麗子  日本医療薬学会年会講演要旨集  21-  377  -377  2011/09
• レーザー励起蛍光検出キャピラリー電気泳動を用いる不均一性タンパク質の結合能評価

  多賀淳; 上林大起; 小玉修嗣; 佐藤睦; 鈴木健太郎; 居迫正和; 杉浦麗子  日本分析化学会年会講演要旨集  59th-  2010
• 保険薬局および病院実務実習に対する学生の意識調査

  北小路学; 石渡俊二; 大床真美子; 船上仁範; 八軒浩子; 多賀淳; 八木秀樹; 和田哲幸; 田邊元三; 市田成志; 西田升三  社会薬学  25-  (2)  34  -34  2007/02
• Capillary Electrophoretic Separation of Drug Enantiomers in Human Serum

  Taga Atsushi; Du Yingxiang; Suzuki Shigeo  Bulletin of Pharmaceutical Research and Technology Institute  12-  21  -31  2004/03
• Effect of Structure Modification of Chondroitin Sulfate C on Its Enantioselectivity to Basic Drugs in Capillary Electrophoresis

  Yingxiang Du; Taga Atsushi; Suzuki Shigeo  Bulletin of Pharmaceutical Research and Technology Institute  11-  29  -49  2003/03
• Approach to In-Capillary Derivatization Utilizing Multistep Reactions

  TAGA Atsushi; NISHIKAWA Atsushi; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  21-  (4)  350  -351  2000/10
• Surface Plasmon Resonance and Analytical Separation

  TAGA Atsushi; KAWAKAMI Kazuhiko; TAKAI Shuji; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  21-  (4)  256  -257  2000/10
• Analysis of Polyglucan-Derived Oligosaccharides by Capillary Electrophoresis Utilizing an In-Capillary Enzymatic Digestion/Chemical Derivatization Technique

  TAGA Atsushi; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  20-  (4)  354  -355  1999/10
• Observation of the Interactions of Carbohydrates with Proteins in Serum by Capillary Electrophoresis

  TAGA Atsushi; MORIOKA Yuka; SUZUKI Shigeo; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  20-  (4)  392  -393  1999/10
• Observation of the Affinities of Glycoprotein Glycoforms to Lectins by Capillary Electrophoresis

  UEGAKI Kana; TAGA Atsushi; HONDA Susumu; AKADA Yoshinobu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  20-  (4)  396  -397  1999/10
• Observation of Electrophoreric Behavior of Erythrocytes by Capillary Electrophoresis in the Presence of Lectins

  TAGA Atsushi; UMEMURA Sachie; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  20-  (4)  394  -395  1999/10
• Measurement of Reaction Rate by Capillary Electrophoresis

  TAGA Atsushi; SUGIMURA Mayumi; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  19-  (4)  320  -321  1998/11
• Capillary Electrophoresis Accompanied by Reactions throughout a Capillary

  TAGA Atsushi; NISHINO Aki; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  18-  (4)  320  -321  1997/10
• Combination of Separation Modes in Capillary Electrophoresis

  TOGASHI Kazutaka; TAGA Atsushi; HONDA Susumu  Chromatography : journal of separation and detection sciences = クロマトグラフィー : 分離・検出科学  18-  (2)  108  -109  1997/06
• Determination of Cefixime and Its Metabolites by High-performance Capillary Electrophoresis

  Honda Susumu; Taga Atsushi; Kakehi Kazuaki  Bulletin of Pharmaceutical Research and Technology Institute  1-  29  -36  1992

Industrial Property Rights

• 特開2018-058790:逆流性食道炎予防剤  2018/04/12

  多賀 淳, 土井 聡, 鹿島 康浩, 松川 泰治, 山田 泰正, 山田 一郎  学校法人近畿大学, ユーハ味覚糖株式会社  201803019657814910
• 特許第6301329号:有害化合物分解方法および有害化合物分解装置  2018/03/09

  田村 耕三, 福田 由之, 石渡 俊二, 多賀 淳  株式会社タムラテコ, 学校法人近畿大学  201803004049867116
• 特開2017-198509:大腸癌マーカー  2017/11/02

  多賀 淳, 山本 哲志, 内藤 善哉, 工藤 光洋  学校法人近畿大学, 学校法人日本医科大学  201703011467565079
• 特許第6218729号:吸着材、該吸着材の製造方法、該吸着材を使用した汚染水及び固体状汚染物の浄化方法  2017/10/06

  森村 毅, 多賀 淳, 緒方 文彦, 石渡 俊二, 佐藤 陽一  学校法人近畿大学, 株式会社瀬戸漆喰本舗  201703021023099913
• 特許第6174576号:曝露防止用キャップ  2017/07/14

  石渡 俊二, 多賀 淳, 西田 升三, 喜多 綾子, 杉浦 麗子, 藤田 秀樹, 長谷川 満  学校法人近畿大学, 有限会社ジ−ティオ−, ニプロ株式会社  201703002889038013
• 特開2016-214191:養鶏方法  2016/12/22

  石原 祥光, 多賀 淳  有限会社マシン・メンテナンス・サービス, 学校法人近畿大学  201703005934467175
• 特開2016-153399:糖組成物製造方法及びインベルターゼ阻害剤  2016/08/25

  多賀 淳, 山本 哲志  学校法人近畿大学, 株式会社メープルファームズジャパン  201603014735352344
• 特開2016-135781:大腸癌の治療用組成物と加工食品  2016/07/28

  多賀 淳, 山本 哲志  学校法人近畿大学  201603019848561952
• 特開2016-065854:放射性元素含有物質の処理方法  2016/04/28

  石渡 俊二, 多賀 淳, 山西 弘城  学校法人近畿大学  201603019649654909
• 特許第5922054号:細胞培養培地およびその製造方法  2016/04/22

  石渡 俊二, 多賀 淳, 佐野 裕之  学校法人近畿大学, 株式会社ルミカ  201603019444338435
• 特開2015-218142:コラーゲンペプチド  2015/12/07

  多賀 淳, 山本 哲志, 網干 貴之  学校法人近畿大学, 株式会社クロモンコスメティック  201503003985667821
• 特許第5780853号:反射器およびこれを備えたキャピラリ電気泳動分析装置  2015/07/24

  多賀 淳, 加藤 祐史, 東海林 秀典  学校法人近畿大学, 東海光学株式会社  201503016820879004
• 特許第5716064号:容器の栓体  2015/03/20

  石渡 俊二, 多賀 淳, 藤田 秀樹, 西田 升三, 喜多 綾子, 杉浦 麗子  学校法人近畿大学, 有限会社ジーティオー  201503017274670390
• WO2014-208428:抗がん剤分解方法および抗がん剤分解装置  2014/12/31

  田村 耕三, 福田 由之, 石渡 俊二, 多賀 淳  株式会社タムラテコ, 学校法人近畿大学  201703000479227207
• 特開2014-183772:細胞培養培地として用いられる架橋ゼラチンゲルおよびその製造方法  2014/10/02

  石渡 俊二, 多賀 淳, 佐野 裕之  学校法人近畿大学, 株式会社ルミカ  201403056305524051
• 特許第5606702号:オリゴ糖の製造方法  2014/09/05

  多賀 淳, 川木 秀子  学校法人近畿大学, 株式会社メープルファームズジャパン  201403002502284663
• 特開2014-050647:抗がん剤投与用注射針およびその製造方法ならびに該注射針を含む抗がん剤投与用キット。  2014/03/20

  多賀 淳, 石渡 俊二, 喜多 綾子, 杉浦 麗子, 齋藤 永宏, 高井 治, 稗田 純子, 藤田 秀樹  学校法人近畿大学, 国立大学法人名古屋大学, 有限会社ジーティオー  201403027354387981
• 特開2014-037275:容器の栓体  2014/02/27

  石渡 俊二, 多賀 淳, 藤田 秀樹, 西田 升三, 喜多 綾子, 杉浦 麗子  学校法人近畿大学, 有限会社ジーティオー  201403008590448040
• WO2013-179596:曝露防止用キャップ  2013/12/05

  石渡 俊二, 多賀 淳, 西田 升三, 喜多 綾子, 杉浦 麗子, 藤田 秀樹, 長谷川 満  学校法人近畿大学, 有限会社ジ−ティオ−, ニプロ株式会社  201603018659158938
• WO2013-168673:漆喰材料、漆喰材料を用いた吸着材、吸着材を使用した汚染水及び固体状汚染物の浄化方法  2013/11/14

  森村 毅, 多賀 淳, 緒方 文彦, 石渡 俊二, 佐藤 陽一  学校法人近畿大学, 株式会社建築舎ゆわんと村  201603020027365517
• 特許第5399477号:容器の栓体  2013/11/01

  石渡 俊二, 多賀 淳, 藤田 秀樹, 西田 升三, 喜多 綾子, 杉浦 麗子  学校法人近畿大学, 有限会社ジーティオー  201403098840430052
• 特開2013-007726:反射器およびこれを備えたキャピラリ電気泳動分析装置  2013/01/10

  多賀 淳, 加藤 祐史, 東海林 秀典  学校法人近畿大学, 東海光学株式会社  201303070401623058
• 2012-124149:曝露防止用キャップ  2012年/05

  杉浦 麗子, 石渡 俊二, 多賀 淳, 西田 升三, 喜多 綾子, 藤田 秀樹, 長谷川 満
• WO2011-052322:注射剤の調製実習用教材およびそれを用いた調製実習方法  2011/05/05

  石渡 俊二, 多賀 淳, 喜多 綾子, 杉浦 麗子, 佐野 裕之, 小林 正隆  学校法人近畿大学, 株式会社ルミカ  201303028698311045
• 特開2011-055741:Analysis of interaction between nucleic acid and protein by affinity capillary electrophoresis  2011/03/24

  杉浦 麗子, 多賀 淳, 石渡 俊二, 佐藤 亮介  学校法人近畿大学  201103018738408896
• 特開2011-046618:オリゴ糖の製造方法  2011/03/10

  多賀 淳, 川木 秀子  学校法人近畿大学, 株式会社メープルファームズジャパン  201103011855626999
• WO2010-113823:容器の栓体  2010/10/07

  石渡 俊二, 多賀 淳, 藤田 秀樹, 西田 升三, 喜多 綾子, 杉浦 麗子  学校法人近畿大学, 株式会社 シナガワ  201203060333406598
• 特願2009-249404:Trainig kit and methods for anti-tumor cancer injection mixing  2010年

  石渡 俊二, 多賀 淳, 喜多 綾子, 杉浦 麗子, 佐野裕之, 小林正隆

Awards & Honors

• 2005 クロマトグラフィー科学会奨励賞
  

Research Grants & Projects

• 還元糖の新規機能の開発－キラル化合物のラセミ化抑制作用機構の解明と食品への展開

  日本学術振興会：科学研究費助成事業 基盤研究(C)

  Date (from‐to) : 2020/04 -2023/03 

  Author : 小玉 修嗣; 多賀 淳; 會澤 宣一; 山本 敦

   

  我々は柑橘類に存在する(R)-シネフリンの加熱によるラセミ化（一方の光学異性体から他方の光学異性体が生成し、最終的に2種類の光学異性体が50%ずつになること）を還元糖が抑制することを見いだした (Anal. Sci., 2019, 35, 407-412)。この結果から、どのような化学構造を有する化合物に対して還元糖がラセミ化抑制作用を有するのかを検討し、その抑制作用機構を明らかにすることを目的とする。 (1) 新規な光学異性体分析法の開発：高速液体クロマトグラフィー（HPLC）により光学異性体を分析する方法として、移動相（溶離液）にキラル化合物を加えて通常の分析カラムで分析する方法がある。移動相は使い捨てであるため、高価なキラル化合物（2種類の光学異性体の片方）を使えないという欠点があり、報告例は少ない。近年、シクロデキストリンを移動相に添加して光学異性体分離する方法が報告されているが、1日の実験で5～10 gのシクロデキストリンが必要となり、実用性に欠けていた。そこで本研究では、従来のシクロデキストリン使用量を1/20以下に抑えたマンデル酸の光学異性体分析法を開発した。また、この方法で2-アミノ-1-フェニルエタノールやフェニルアラニノールも光学異性体分離できることを確認した。 (2) 加熱によるラセミ化の検討：上記の光学異性体分析法を用いて、マンデル酸、2-アミノ-1-フェニルエタノールやフェニルアラニノールの3種類の化合物を加熱してラセミ化が起こるかどうかを検討した。残念ながら、これら3種類の化合物がいずれもラセミ化は観察されなかった。 (3) 新たなキラル化合物への対応：上記(1)の方法による光学異性体分析法を応用して、上記3種類以外の化合物での光学異性体分析法を検討している。
• Enantioseparation of aldohexoses and aldopentoses with L-tryptophanamide for detecting L-monosaccharides by reversed phase HPLC using HPLC

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

  Date (from‐to) : 2015/04 -2018/03 

  Author : Kodama Shuji

   

  D-Monosaccharides are distributed widely in nature, but it is not clarified whether L-monosaccharides, such as L-galactose, present in nature. We developed a novel reversed phase high-performance liquid chromatography for simultaneous enantioseparation of aldohexoses and aldopentoses derivatised with L-tryptophanamide. Using the above method, we tried to detect L-galactose in 8 vegetables. As a result, a small peak in only komatsuna sample was detected at the retention time of L-galactose. It is necessary to identify whether the peak is L-galactose in future.
• Development of chiral ligand-exchange method using selector ligand and/or metal ion cocktails

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

  Date (from‐to) : 2011 -2013 

  Author : KODAMA Shuji; YAMAMOTO Atsushi; AIZAWA Sen-ichi; TAGA Atsushi

   

  Using a singular ligand and a dual central ion in a background electrolyte, a ligand exchange CE was investigated for the simultaneous enantioseparation of malic, tartaric and isocitric acids. Tartaric acid was enantioseparated by a ligand exchange CE with 100 mM D-quinic acid as a singular ligand and 10 mM Cu(II) ion as a singular central ion, but malic and isocitric acids were not enantioseparated. Addition of 1.8 mM Sc(III) ion to the background electrolyte with 10 mM Cu(II) ion to create a dual central metal ion system permitted the simultaneous determination of these alpha-hydroxy acid enantiomers and citric acid. The proposed ligand exchange CE was thus well suited for detecting adulteration of fruit juices.
• Enantioseparation of DL-galactose in plants and foods

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

  Date (from‐to) : 2008 -2010 

  Author : KODAMA Shuji; KEMMEI Tomoko; YAMAMOTO Atsushi; AIZAWA SenーIchi; TAGA Atsushi

   

  D-Monosaccharides are distributed widely in nature, but it is not clarified that free L-monosaccharides, such as L-galactose, L-glucose and L-mannose, present. We tried to enantioseparate galactose in vegetables and processed foods by chiral ligand-exchange capillary electrophoresis. And also, epimerization of galactose was studied.
• Elucidation of the Characteristic Features of Capillary/Microchip Electrophoresis and Its Applicaton

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

  Date (from‐to) : 1999 -2001 

  Author : HONDA Susumu; TAGA Atsushi; SUZUKI Shigeo

   

  This research group has investigated the characteristic features of capillary/microchip electrophoresis and its application during a three year term, 1999-2001. Fruitful results were obtained for capillary electrophoresis (CE), which were more than expected, and the achievement made for technological development of microchip electrophoresis (ME) has made it possible to use this method widely for analysis of biological substances. The following is itemized conclusion of the results. For CE 1) Various modes have been developed for separating biological substances, especially carbohydrates. 2) A new technology of "in-capillary derivatization" has been developed and systemized. 3) A new method for molecular binding studies has been developed, which allowed association constant estimation using small amounts of substances. 4) A series of studies for searching substances having specific binding ability has been made, and several biologically active substances have been found. For ME 1) Rapid, ultra micro analysis has been realized by coupling electrophoretic separation on a glass, quartz or organic polymer chip to single spot detection by laser-induced fluorescence. 2) A technique of a whole-channel UV detection has been proposed for routine analysis of biological substances. 3) Wide applicability of ME to biological substances has been demonstrated using various kinds of samples.
• マイクロチップ電気泳動に関する研究
• 表面プラズモン共鳴に関する研究
• キャピラリー電気泳動に関する研究
• Study of Microchip Electrophoresis
• Study of Surface Plasmon Resonance
• Study of High Performance Capillary Electrophoresis

Other link

researchmap

https://researchmap.jp/read0034066