Objective To investigate the relationship between expression of type Ⅳ collagenase (Ⅳ col ) andthe invasion of laminin-receptors (LNR) in human colorectal carcinoma cells. Methods: The expression ofLNR and Ⅳ col in...Objective To investigate the relationship between expression of type Ⅳ collagenase (Ⅳ col ) andthe invasion of laminin-receptors (LNR) in human colorectal carcinoma cells. Methods: The expression ofLNR and Ⅳ col in human colorectal carcinoma(HCC) cell lines were detected quantitatively with different potential metastasis. By using human amniotic membrane(HAM) invasion model, we observed the expressionof Ⅳ col and invasion in both HCC cell lines affected by LNR monoclonal antibodies. Results: High metastaticpotential cell line Lovo expressed higher levels of LNR and Ⅳ col than HT29, a low metastatic potential HCCcell line. The number of cells adhered to HAM of Lovo were more than that of HT29. When the cells of thetwo HCC cell lines blocked by LNR antibodies, the expression of Ⅳcol were decreased, and the cells adheredto HAM expressed Ⅳ col were also decreased. Conclusion: LNR might affect the regulation of expression ofⅣ col in tumor cells by cellular signal communication, and then affect the invasion and metastasis of tumor.展开更多
文摘Objective To investigate the relationship between expression of type Ⅳ collagenase (Ⅳ col ) andthe invasion of laminin-receptors (LNR) in human colorectal carcinoma cells. Methods: The expression ofLNR and Ⅳ col in human colorectal carcinoma(HCC) cell lines were detected quantitatively with different potential metastasis. By using human amniotic membrane(HAM) invasion model, we observed the expressionof Ⅳ col and invasion in both HCC cell lines affected by LNR monoclonal antibodies. Results: High metastaticpotential cell line Lovo expressed higher levels of LNR and Ⅳ col than HT29, a low metastatic potential HCCcell line. The number of cells adhered to HAM of Lovo were more than that of HT29. When the cells of thetwo HCC cell lines blocked by LNR antibodies, the expression of Ⅳcol were decreased, and the cells adheredto HAM expressed Ⅳ col were also decreased. Conclusion: LNR might affect the regulation of expression ofⅣ col in tumor cells by cellular signal communication, and then affect the invasion and metastasis of tumor.