Kazuya Fukuoka; Takahiro Yoneda; Yoshizumi Kohnoike; Kohichi Tomoda; Masanori Yoshikawa; Hitoshi Katada; Nobuhiro Narita; Teruhiko Imai; Sougo Ioka
Haigan 34 (2) 161 - 170 0386-9628 1994
[Refereed] We investigated lectin binding to normal bronchus and lung, metaplastic bronchial epithelium, and 42 cases of primary non-small cell lung carcinoma consisting of 23 squamous cell carcinomas and 19 adenocarcinomas. Fresh frozen sections were stained with 6 fluorescein isothiocyanate (FITC) -conjugated lectins of Dolichos biflorus (DBA), Ulex europaeus (UEA-I), Ricinus communis (RCA-I), Triticum vulgare (WGA), Canavalia ensiformis (ConA), Arachis hypogaea (PNA) and a microphotometer was used for objective evaluation of the fluorescence intensity. UEA-I, RCA-I, WGA, ConA, and PNA with the neuraminidase treatment (PNA · N (+)) were bound to most nontumorous bronchial and lung tissues, metaplastic bronchial epithelium, and lung carcinomas. However, the binding pattern of UEA-I differed from those of RCA-I, WGA, ConA, and PNA · N (+) in terms of localization of its binding sites. DBA was bound to nontumorous and metaplastic bronchial epithelium, bronchial glands, and a part of the bronchiolar epithelium and alveolar septum, but not to alveolar epithelium. The positivity of DBA binding to lung carcinomas was 61.9% (adenocarcinoma, 84.2%
squamous cell carcinoma, 43.5%)
the positivity of adenocarcinoma being significantly higher than that of squamous cell carcinoma. These results suggest that DBA is an important lectin for the analysis of differences of carbohydrate structures in cell surface membrane between nontumorous bronchus, lung, and the different histological types of non-small cell lung carcinomas. © 1994, The Japan Lung Cancer Society. All rights reserved.