【摘要】 目的观察槲皮素(Quercetin,Que)对人类乳腺癌细胞株增殖的影响。方法采用MTT法测定槲皮素对雌激素依赖性乳腺癌细胞MCF-7和非雌激素依赖性乳腺癌细胞MDA-MB231细胞增殖作用,并以雌激素受体拮抗剂ICI182、780为工具药来评价槲皮素发挥雌激素样作用与雌激素受体(ER)的关系,采用流式细胞术对MCF-7细胞的增殖情况进行分析。结果与溶剂对照组相比较,Que(10～50μmol/L)能显著促进MCF-7细胞的增殖,而抑制ER阴性MDA-MB231细胞,并将MCF-7细胞周期由G1期向S期推进,促进DNA合成,提高细胞分裂增殖指数,且Que促进MCF-7细胞增殖作用被ER拮抗剂所拮抗。结论Que具有雌激素活性,此作用是通过ER介导的。更多还原

【Abstract】 Objective To investigate the effects of quercetin on the proliferation of mammary cancer cell in vitro. Methods Effects of quercetin on the cell proliferation was tested in ER-positive MCF-7 cell and ER-negative MDA-MB231 cell by MTT measurement. And to evaluate the estrogen-like effect of quercetin and its relation with the estrogen-receptor by pure estrogen receptor antagonist ICI 182, 780 as a tool. Cell cycle was examined by flow cytometry. Result Quercetin (10～50 μmol/L) stimulated proliferation of ER-positive MCF-7 cell compared with solvent control, whereas ER-negative MDA-MB231 cell proliferation effect was inhibited, and the cell cycle was impulsed from G1 to S, DNA synthesizing was inhanced, PI was also increased. The above function on boosting MCF-7 cell proliferation can be inhibited by adding estrogen receptor antagonism ICI182, 780. Conclusion Quercetin has the estrogen-like activities through the estrogen response pathway.更多还原