RRC ID 61280
Author Kataoka H, Uchino H, Asada Y, Hatakeyama K, Nabeshima K, Sumiyoshi A, Koono M.
Title Analysis of tissue factor and tissue factor pathway inhibitor expression in human colorectal carcinoma cell lines and metastatic sublines to the liver.
Journal Int J Cancer
Abstract To investigate the expression of tissue factor (TF) and tissue factor pathway inhibitor (TFPI) in human colorectal carcinomas, Northern blot analysis was performed in a series of human colorectal carcinoma cell lines and in normal or tumoral colorectal tissues. Of 16 human colorectal carcinoma cell lines examined, most expressed TF mRNA, though the levels of expression varied significantly. Considerably higher expression was observed in the cell line CaR-1, while lines established from metastatic lesions tended to express abundant TF mRNA. By contrast, TFPI mRNA levels were low in these high TF-expressing cell lines. TFPI was expressed abundantly in WiDr and in a few other cell lines which expressed a very low level of TF mRNA. Immunocytochemically, both proteins were stained predominantly on the cell surface; however, diffuse cytoplasmic staining for TF also was observed in CaR-1 cells. In addition, the cell surface TF activity was significantly higher in CaR-1 cells than in WiDr cells, confirming the results of mRNA analysis. The level of TF mRNA in colorectal carcinoma tissue in vivo and its ratio to the normal counterpart also varied significantly among the cases. To search for a possible role of TF/TFPI in metastasis of colorectal carcinoma cells, the expression of these genes was compared between a rectal adenocarcinoma cell line, RCM-1, and its highly metastatic subline, RCM-1 L-10. Compared with the parent line, RCM-1 L-10 expressed 7.5-fold higher levels of TF mRNA, whereas TFPI expression was not altered significantly or even decreased slightly. The higher cellular TF activity was confirmed in the metastatic subline in comparison with the parent line.
Volume 72(5)
Pages 878-84
Published 1997-9-4
DOI 10.1002/(sici)1097-0215(19970904)72:5<878::aid-ijc27>3.0.co;2-3
PII 10.1002/(SICI)1097-0215(19970904)72:5<878::AID-IJC27>3.0.CO;2-3
PMID 9311608
MeSH Adenocarcinoma / metabolism* Adenocarcinoma / secondary Blotting, Northern Colorectal Neoplasms / metabolism* Colorectal Neoplasms / pathology Humans Immunohistochemistry Lipoproteins / genetics Lipoproteins / metabolism* Liver Neoplasms / metabolism* Liver Neoplasms / secondary RNA, Messenger / analysis Serine Proteinase Inhibitors / genetics Serine Proteinase Inhibitors / metabolism* Thromboplastin / genetics Thromboplastin / metabolism* Tumor Cells, Cultured
IF 5.145
Human and Animal Cells LoVo(RCB1639) CW-2(RCB0778)