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.
关键词
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
RapamycinProtein kinase B/mammalian target of rapamycin signal pathwayCervical cancer HeLa cellInvasionMetastasis