瘦素对人乳腺癌MCF-7细胞迁移和侵袭的影响及其机制

被引:11
作者
王林
曹红
庞雪利
李矿发
党微旗
唐浩
陈婷梅
机构
[1] 重庆医科大学教育部临床检验诊断学重点实验室
关键词
瘦素; 乳腺癌; MCF-7细胞; 迁移; 侵袭;
D O I
10.13423/j.cnki.cjcmi.006903
中图分类号
R737.9 [乳腺肿瘤];
学科分类号
摘要
目的探讨瘦素(leptin)对人乳腺癌MCF-7细胞迁移及侵袭能力的影响,并探讨其机制。方法 RT-PCR,Western blot法检测MCF-7细胞leptin受体(OB-R)的表达;Western blot法检测leptin(100 ng/mL)对MCF-7细胞信号通路分子p-ERK1/2,p-AKT,p-STAT3表达的影响;细胞划痕实验检测leptin对MCF-7细胞迁移能力的影响;TranswellTM细胞侵袭实验检测leptin对MCF-7细胞侵袭能力的影响;RT-PCR,Western blot法检测leptin对MCF-7细胞基质金属蛋白酶(MMP-9),转化生长因子β(TGF-β)表达的影响。结果 Leptin长短受体(OB-Rb,OB-Rt)在MCF-7细胞中均有表达;Leptin能显著上调MCF-7细胞p-ERK1/2,p-STAT3,p-AKT的表达(P<0.05);Leptin能促进MCF-7细胞的迁移及侵袭能力(P<0.05),JAK/STAT,PI3K/AKT信号通路抑制剂AG490(50μmol/L),LY294002(10μmol/L)能抑制leptin对MCF-7细胞的促迁移和侵袭作用(P<0.05),而MAPK/ERK通路抑制剂PD98059(10μmol/L)作用不明显(P>0.05);Leptin促进MCF-7细胞MMP-9,TGF-β的表达,AG490,LY294002能抑制其作用(P<0.05),PD98059对其无影响(P>0.05)。结论 Leptin可能通过JAK/STAT、PI3K/AKT信号通路上调MMP-9,TGF-β的表达促进MCF-7细胞迁移和侵袭。
引用
收藏
页码:1272 / 1276
页数:5
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