Role of alpha 2 beta 1- and alpha 3 beta 1-integrin in the peritoneal implantation of scirrhous gastric carcinoma.
Role of alpha 2 beta 1- and alpha 3 beta 1-integrin in the peritoneal implantation of scirrhous gastric carcinoma.
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DOI：
10.1038/bjc.1996.556
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发表时间：
1996-11
影响因子：
8.8
通讯作者：
Sowa, M
中科院分区：
文献类型：
--
作者：
Nishimura, S;Chung, Y S;Yashiro, M;Inoue, T;Sowa, M
We established a highly peritoneal-seeding cell line, OCUM-2MD3, from a poorly peritoneal-seeding cell line, OCUM-2M, of human scirrhous gastric carcinoma. The intraperitoneal inoculation of OCUM-2MD3 cells produced peritoneal dissemination in nude mice, whereas that of OCUM-2M cells did not. We then investigated the correlation between seeding potential and adhesion molecule beta 1-integrins or alpha 6 beta 4-integrin. alpha 2 beta 1- and alpha 3 beta 1-integrin expression on OCUM-2MD3 cells (91.6% and 93.6%) was increased compared with that of OCUM-2M cells (47.8% and 34.3%) by flow cytometric analysis, and the expression level of the other integrins was not different between the two cell lines. The binding ability of OCUM-2MD3 cells to matrigel, fibronectin, laminin and type I collagen was significantly increased, approximately seven times, three times, eight times, and three times greater than that of OCUM-2M cells respectively. The invasiveness of OCUM-2MD3 cells was also significantly increased 8-fold over OCUM-2M cells. The binding and invasive ability of OCUM-2MD3 cells was significantly decreased following the addition of anti-alpha 2 beta 1- and alpha 3 beta 1-integrin antibody, but not by anti-alpha 6 beta 1- and alpha 6 beta 4-integrin antibody. These results suggest that adhesiveness and invasiveness in peritoneal implantation of scirrhous gastric carcinoma might be closely associated with alpha 2 beta 1- and alpha 3 beta 1-integrin.
