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口腔癌細胞株におけるcetuximabを介した抗体依存性細胞障害(ADCC)活性と細胞表面EGFR発現との関連
Authors
Katsuhiko Hatake
Tadaaki Kirita
+4 more
Hiroshi Nakamura
Shigehiro Tamaki
Takahiro Yagyuu
Nobuhiro Yamakawa
Publication date
27 September 2020
Publisher
'Anticancer Research USA Inc.'
Doi
Cite
Abstract
BACKGROUND/AIM: Cetuximab treatment targets the epidermal growth factor receptor (EGFR) overexpressed in oral cancer. This study aimed to investigate the anti-tumour activity of cetuximab against oral cancer cell lines with respect to antibody-dependent cell-mediated cytotoxicity (ADCC), and determine the correlation between ADCC and EGFR expression. MATERIALS AND METHODS: EGFR expression in oral cancer cells was measured by quantitative flow cytometric analysis and immunohistochemistry. ADCC activity was measured by 4-h calcein release assays. RESULTS: Cetuximab-mediated ADCC against oral cancer cells was detectable at a concentration of 0.1 μg/ml. A high correlation was observed between the number of EGFR molecules on the surface of oral cancer cells and ADCC (correlation coefficient: 0.847; p=0.032). CONCLUSION: ADCC is an important mechanism underlying the therapeutic effect of cetuximab, and EGFR expression in tumour cells might serve as a predictive marker to evaluate the effect of cetuximab treatment.博士(医学)・甲第721号・令和元年9月27日Copyright© 2019, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.発行元の規定により、本文の登録不可。本文は以下のURLを参照 "http://dx.doi.org/10.21873/anticanres.13238"(※全文閲覧は学内限定
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Last time updated on 14/05/2020