Role of alpha 2 beta 1- and alpha 3 beta 1-integrin in the peritoneal implantation of scirrhous gastric carcinoma

Br J Cancer. 1996 Nov;74(9):1406-12. doi: 10.1038/bjc.1996.556.


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.

MeSH terms

  • Adenocarcinoma, Scirrhous / metabolism
  • Adenocarcinoma, Scirrhous / secondary*
  • Animals
  • Cell Adhesion
  • Collagen
  • Drug Combinations
  • Extracellular Matrix / metabolism
  • Extracellular Matrix / pathology
  • Female
  • Flow Cytometry
  • Humans
  • Integrin alpha3beta1
  • Integrins / metabolism
  • Integrins / physiology*
  • Laminin
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • Neoplasm Invasiveness
  • Neoplasm Proteins / metabolism
  • Neoplasm Proteins / physiology*
  • Peritoneal Neoplasms / metabolism
  • Peritoneal Neoplasms / secondary*
  • Proteoglycans
  • Receptors, Collagen
  • Stomach Neoplasms / metabolism
  • Stomach Neoplasms / pathology*


  • Drug Combinations
  • Integrin alpha3beta1
  • Integrins
  • Laminin
  • Neoplasm Proteins
  • Proteoglycans
  • Receptors, Collagen
  • matrigel
  • Collagen