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科罗索酸调控STAT3信号通路诱导结肠癌LoVo细胞凋亡 被引量:3

Effects of Corosolic Acid on Inducing Apoptotic of Human Colon Cancer LoVo Cells by STAT3 Pathway
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摘要 目的探讨科罗索酸对结肠癌Lo Vo细胞增殖凋亡的影响及其机制。方法将结肠癌Lo Vo细胞随机分成阴性对照组和不同浓度科罗索酸组。阴性对照组正常培养,科罗索酸组分别以5,10,20,40μmol·L-1科罗索酸作用24 h。噻唑蓝(MTT)法检测细胞增殖情况,流式细胞仪测定细胞凋亡情况,Western blot检测STAT3的表达及磷酸化STAT3(pSTAT3)水平。结果经5,10,20,40μmol·L-1科罗索酸作用Lo Vo细胞24 h后,细胞活性与阴性对照组相比,分别为(98.02±14.05)%,(78.25±8.71)%(P<0.05)、(36.63±13.36)%(P<0.01)和(18.41±10.38)%(P<0.01);阴性对照组凋亡细胞比例为(7.37±1.34)%;5,10,20,40μmol·L-1科罗索酸组凋亡细胞比例依次为(7.45±1.55)%,(12.72±3.46)%(P<0.05),(22.22±5.73)%(P<0.01)和(58.52±7.27)%(P<0.01)。Western blot显示科罗索酸处理后Lo Vo细胞p-STAT3水平明显降低。结论科罗索酸呈浓度依赖性地抑制结肠癌Lo Vo细胞增殖,促进细胞凋亡,其机制可能与阻断STAT3通路有关。 Objective To investigate the effect of corosolic acid on cell proliferation and apoptosis in human colon cancer Lo Vo cells. Methods Colon cancer Lo Vo cells were randomly divided into normal control and corosolic acid treated group,with 5,10,20,and 40 μmol·L^-1,respectively,for 24 h.Cell proliferation was measured by MTT method,cell apoptosis was detected by flow cytometry,and the levels of STAT3 and p-STAT3 were checked by Western blot. Results Upon being treated with corosolic acid,the cell proliferation rate was( 98.02±14.05) %,( 78.25± 8.71) %( P〈 0.05),( 36.63± 13.36) %( P〈 0.01)and( 18.41±10.38) %( P〈 0. 01),and the apoptosis rate was( 7. 45 ± 1. 55) %,( 12. 72 ± 3. 46) %( P〈 0. 05),( 22. 22 ± 5. 73) %( P0.01) and( 58.52±7.27) %( P0.01),as compared with the normal control( 7.37±1.34) %.And the level of p-STAT3 decreased significantly while that of STAT3 unchanged. Conclusion Corosolic acid inhibits Lo Vo cell proliferation,promotes cell apoptosis,which may be associated with blocking the phosphorylation of STAT3.
出处 《医药导报》 CAS 2016年第1期31-34,共4页 Herald of Medicine
基金 河南省基础与前沿科技计划项目(132300410466)
关键词 科罗索酸 结肠 LOVO细胞 Corosolic acid Cancer colon LoVo cell
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