黄芩素抑制胃癌MGC-803细胞增殖和迁移

摘要

AIM: To investigate the effects of baicalein(BAI)on the proliferation and migration of gastric cancer MGC-803 cells and the mechanisms.METHODS:After MGC-803 cells were treated with BAI at different concen-trations,the viability of the MGC-803 cells was tested by MTT assay.The cell colony formation ability were detected by plate colony formation assay.Wound-healing and Transwell cell migration assays were used to test the migration ability of the MGC-803 cells.The concentration of 12-hydroxyeicosatetraenoic acid(12-HETE)was measured by ELISA.The pro-tein levels of platelet type 12-lipoxygenase(p12-LOX),vascular endothelial growth factor(VEGF),p-ezrin and epithelial-mesenchymal transition(EMT)markers in MGC-803 cells were determined by Western blot.RESULTS:BAI significantly inhibited the proliferation,plate colony formation and migration abilities of the MGC-803 cells(P<0.05 or P<0.01), down-regulated the concentration of p12-LOX metabolite 12-HETE significantly(P<0.05 or P<0.01), decreased the protein levels of p12-LOX,VEGF,p-ezrin,vimentin and Snail(P<0.05 or P<0.01),and increased the protein expres-sion of E-cadherin(P<0.01).CONCLUSION:BAI suppresses the proliferation and migration abilities of gastric cancer MGC-803 cells effectively.These effects of BAI may be related to regulating the protein levels of p12-LOX,VEGF,p-ezrin and EMT-related proteins.%目的:探讨黄芩素(BAI)对胃癌MGC-803细胞增殖和迁移的作用及机制.方法:MGC-803细胞用不同浓度BAI处理后,采用MTT法检测细胞的存活率;平板集落形成实验检测细胞的集落形成能力;划痕愈合实验和Transwell小室迁移实验检测细胞的迁移能力;ELISA检测12-羟基二十碳四烯酸(12-HETE)的浓度;Western blot实验检测血小板型12-脂氧合酶(p12-LOX)、血管内皮生长因子(VEGF)、p-ezrin和上皮-间充质转化(EMT)标志物蛋白的表达.结果:BAI可显著抑制MGC-803细胞的增殖、平板集落形成及迁移(P<0.05或P<0.01),显著下调p12-LOX代谢产物12-HETE的浓度(P<0.05或P<0.01),并显著下调p12-LOX、VEGF、p-ezrin、vimentin和Snail蛋白的表达水平(P<0.05或P<0.01),上调E-cadherin蛋白的表达水平(P<0.01).结论:BAI可有效抑制胃癌MGC-803细胞的增殖和迁移,其机制与BAI调控p12-LOX、VEGF、p-ezrin及EMT相关蛋白的表达变化有关.