Abstract
Objective To investigate the effects of endothelin-1 on the proliferation of HCT-116 cells. Methods The expression of endothelin-1 and endothelin receptors A and B in the HCT-116 cells was detected by RT-PCR and immunohistochemistry method.The effects of endothelin-1 at different concentrations and action time points on HCT-116 cells were measured by MTT assay and were analyzed by variance analysis.Results The expression of endothelin-1 and endothelin receptors A and B at the gene and protein levels in HCT-116 cells was detected.Endothelin-1 had significant effects on the proliferation of HCT-116 cells.The proliferation peak of HCT-116 cells was reached when the concentration of endothelin-1 was 1×10-7mol/L and the action time was 48 hours.Conclusions Endothelin-1 promotes proliferation of HCT-116 cells in a dose-and time-dependent manner,and the process is mediated by endothelin receptors. Key words: Colorectal neoplasms; HCT-116 cells; Endothelin-1
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