RESUMO
UNLABELLED: Objetive: To investigate the effects of PKF118-310 on cell cycle and proliferation of K562 cell lines and its mechanism. METHODS: After treatment of PKF118-310 with different concentration, the proliferation inhibition on K562 cell lines was detected by MTT, the existance of ß-catenin and TCF-4 in the cells was observed by immunohistochemistry. The change of the cell cycle was detected by flow cytometry. The expressions of caspase-3, ß-catenin, TCF and BCL-9 were detected by Western blot. RESULTS: PKF118-310 can inhibit the proliferation of K562 cell line by S phase blocking. The ß-catenin and TCF in the cells were observed by immunohistochemistry. After treating this cell line with PKF118-310 of different concentrations for 72 h, the expression level of caspase-3 increased, the expression levels of ß-catenin, TCF and BCL-9 significantly decreased. CONCLUSION: PKF118-310 induces cycle arest of K562 cells at the S phase and inhibits the proliferation of these cells through decreasing ß-catenin/TCF/BCL-9 thrascriptional activity.