Abstract
Cervical cancer (CC) is a common malignant tumor in the female reproductive system that is characterized by a high metastatic potential. LncRNA ANRIL has been found to be a cancer oncogene in multiple tumors. In our study, we altered the expression of ANRIL in CC cells and evaluated its ability on influencing proliferation, migration and invasion of CC cells and associated mechanism. Differentially expressed lncRNAs in CC were identified by microarray and TCGA analyses. CC tissues and adjacent tissues were collected in order to extract CC cells. The expression of ANRIL was determined by RT-qPCR. The CC cells were transfected with siRNA or si-NC against ANRIL to find out whether ANRIL can influence the expression of Cyclin D1, CDK4, CDK6, E-cadherin, vimentin and N-cadherin, as well as affect cell proliferation, cell apoptosis, cell migration and cell invasion of CC cells. Based on TCGA and microarray analyses, ANRIL was predicted to be highly expressed in CC and CC with migration. Then further verification was obtained by means of RT-qPCR that ANRIL was highly expressed in CC tissues. In addition, high expression of ANRIL was related to increased E-cadherin expression, high migration of CC as well as decreased cell apoptosis rate. On the other hand, inhibition of ANRIL expression led to decreased expressions of Cyclin D1, CDK4, CDK6, N-cadherin and Vimentin, along with attenuated cell proliferation, migration and invasion of CC cells. The key findings of our study demonstrated that the inhibition of lncRNA ANRIL reduces the proliferation, migration and invasion capabilities of CC cells. Down-regulation of ANRIL may serve as a potential therapeutic target in the treatment of CC.
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