IGFBP7过表达对人肝癌细胞 HepG2增殖的影响

Effect of IGFBP7 overexpression on proliferation of human hepatocellular carcinoma HepG2 cells

目的：研究过表达胰岛素样生长因子结合蛋白7（IGFBP7）对人肝癌细胞 HepG2增殖的影响。方法培养人肝癌 HepG2细胞，用 LipofectamineTM 2000将 pIRES2-ZsGreen1-IGFBP7质粒或pIRES2-ZsGreen1空白质粒转染进 HepG2肝癌细胞，并用荧光显微镜鉴定细胞转染情况；采用 MTT检测转染48h 后各组细胞增殖情况。结果 LipofectamineTM 2000成功将 pIRES2-ZsGreen1-IGFBP7质粒或 pIRES2-ZsGreen1空白质粒转染进 HepG2肝癌细胞；MTT 结果发现，与空白处理组和空白质粒转染组相比，IGFBP7过表达组细胞增殖能力明显降低。结论 IGFBP7过表达对 HepG2肝癌细胞的增殖具有抑制效果。

Objective To present study was to investigate the effects of insulin-like growth factor binding protein 7 (IGFBP7)on the proliferation of human hepatocellular carcinoma HepG2 cells.Methods Human hepatocellular carcinoma HepG2 cells was cultured,and plasmid pIRES2-ZsGreen1-IGFBP7 or empty plasmid was transfected into HepG2 cells and the cell transfection efficiency was examined by fluores-cence microscopy;MTT was performed to evaluate the effect of IGFBP7 on proliferation and apoptosis of HepG2 cells in 48 hours after transfection.Results IGFBP7 transfected group decreased cell proliferation noticeably.Conclusions Overexpression of IGFBP7 can down-regulte the proliferation of human hepatocel-lular carcinoma HepG2 cells.