雷帕霉素对宫颈癌HeLa细胞侵袭转移的影响及机制研究
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篇名: 雷帕霉素对宫颈癌HeLa细胞侵袭转移的影响及机制研究
TITLE:
摘要: 目的:研究雷帕霉素对宫颈癌HeLa细胞侵袭转移的影响及其机制。方法:将HeLa细胞分为对照组和雷帕霉素低、中、高剂量(10、30、100 nmol/L)组,药物作用48 h后,MTT法检测细胞活力,计算抑制率;Transwell法检测细胞迁移和侵袭能力;Western blot法检测细胞中蛋白激酶B(Akt)、雷帕霉素靶蛋白(mTOR)磷酸化水平,以及基质金属蛋白酶2(MMP-2)、MMP-9、波形蛋白(Vimentin)、钙黏蛋白(E-cadherin)表达水平。结果:与对照组比较,雷帕霉素各剂量组细胞的抑制率增加(P<0.01),迁移细胞数目和侵袭细胞数目减少(P<0.01),MMP-2、MMP-9、Vimentin表达水平降低(P<0.01或P<0.05),E-cadherin表达水平增强(P<0.01或P<0.05),Akt及mTOR磷酸化水平降低(P<0.01)。结论:雷帕霉素可通过Akt/mTOR信号通路抑制HeLa细胞的侵袭     转移。
ABSTRACT: OBJECTIVE: To study the effects and mechanism of rapamycin on invasion and metastasis of cervical cancer HeLa cell. METHODS: HeLa cells were divided into control group and rapamycin low-dose, medium-dose and high-dose groups (10, 30, 100 nmol/L). After treated for 48 h, cell viability was measured by MTT assay, and inhibitory rate was calculated; migration and invasion of cell was tested by Transwell assay. The expression of matrix metalloproteinase 2 (MMP-2), MMP-9, Vimentin and E-cadherin, and phosphorylation of protein kinase B (Akt), mammalian target of rapamycin (mTOR) were detected by Western blot. RESULTS: Compared with control group, the inhibition rate of cell viability was increased in rapamycin groups (P<0.01); the number of invasion and metastasis cells decreased (P<0.01); the expression of MMP-2, MMP-9 and Vimentin were decreased (P<0.01 or P<0.05); the expression of E-cadherin was enhanced (P<0.01 or P<0.05); the phosphorylation of Akt and mTOR were reduced (P<0.01). CONCLUSIONS: Rapamycin could inhibit invasion and metastasis of HeLa cell via Akt/mTOR signal pathway.
期刊: 2016年第27卷第16期
作者: 贾利刚,田菲,张媛
AUTHORS: JIA Ligang,TIAN Fei,ZHANG Yuan
关键字: 雷帕霉素;蛋白激酶B/雷帕霉素靶蛋白信号通路;宫颈癌HeLa细胞;侵袭;转移
KEYWORDS: Rapamycin; Protein kinase B/mammalian target of rapamycin signal pathway; Cervical cancer HeLa cell; Invasion; Metastasis
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