MiR-29a function as tumor suppressor in cervical cancer by targeting SIRT1 and predict patient prognosis

OncoTargets and Therapy

关键词: miR-29a;    cervical cancer;    SIRT1;    tumor suppressor;    EMT;   

DOI  :  

来源: DOAJ

【 摘 要 】

Ping Nan,1 Yugui Niu,2 Xiuhua Wang,3 Qiang Li11Department of Gynaecology, Shengli Oil Centre Hospital, Dongying, People’s Republic of China; 2Department of Joint Surgery, Shengli Oil Center Hospital, Dongying, People’s Republic of China; 3Department of Gynecology, Dongying District People’s Hospital, Dongying, People’s Republic of ChinaCorrespondence: Qiang LiDepartment of Gynaecology, Shengli Oil Centre Hospital, No. 31 Jinan Road, Dongying District, Dongying District 257000, People’s Republic of ChinaTel [phone]Email [e-mail]: Cervical cancer is the second most frequently malignant tumors in females and metastasis is a challenge of the treatment of cervical cancer. MiR-29a is usually low expressed in several tumors and its functions in cervical cancer remain unclear.Patients and methods: The quantitative real-time polymerase chain reaction was employed to assess the expression of miR-29a and the Sirtuin-1 (SIRT1). Cell metastatic ability was assessed using Transwell and Western blot assays. The dual-luciferase reporter assay was performed to verify that miR-29a targeted to the 3’-untranslated region (UTR) of SIRT1 mRNA.Results: MiR-29a was low expressed in cervical cancer and downregulation of miR-29a was associated with poor outcome. MiR-29a regulated the expression of SIRT1 by targeting to its 3’-UTR of mRNA in HeLa cells. SIRT1 was upregulated in cervical cancer tissues and cells in comparison with the non-tumor tissues and normal cells. Upregulation of SIRT1 predicted worse outcome of cervical cancer patients. MiR-29a was participated in the migration, invasion and epithelial–mesenchymal transition (EMT) in cervical cancer through directly targeting to the 3’-UTR of SIRT1 mRNA. SIRT1 reversed partial roles of miR-29a on metastasis in cervical cancer.Conclusion: miR-29a suppressed migration, invasion and EMT by directly targeting to SIRT1 in cervical cancer. The newly identified miR-29a/SIRT1 axis provides novel insight into the pathogenesis of cervical cancer.Keywords: miR-29a, cervical cancer, SIRT1, tumor suppressor, EMT

【 授权许可】

Unknown