Lipid raft-mediated miR-3908 inhibition of migration of breast cancer cell line MCF-7 by regulating the interactions between AdipoR1 and Flotillin-1

World Journal of Surgical Oncology

Research

Fei Shan¹  Yuan Li²  Jinglong Chen³ 

[1] Department of Cardiac Surgery, Affiliated Hospital of Medical College of Yan’an University, 716000, Yan’an, Shanxi, China;Department of Obstetrics and Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, 100048, Beijing, China;Department of Oncology, Beijing Ditan Hospital, Capital Medical University, 100015, Beijing, China;

关键词: MicroRNA;    Breast carcinoma;    Lipid raft;    Migration;    AdipoR1;    Flotillin-1;   

DOI  :  10.1186/s12957-017-1120-9

 received in 2016-09-21, accepted in 2017-02-14,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundThe mechanisms of lipid raft regulation by microRNAs in breast cancer are not fully understood. This work focused on the evaluation and identification of miR-3908, which may be a potential biomarker related to the migration of breast cancer cells, and elucidates lipid-raft-regulating cell migration in breast cancer.MethodsTo confirm the prediction that miR-3908 is matched with AdipoR1, we used 3’-UTR luciferase activity of AdipoR1 to assess this. Then, human breast cancer cell line MCF-7 was cultured in the absence or presence of the mimics or inhibitors of miR-3908, after which the biological functions of MCF-7 cells were analyzed. The protein expression of AdipoR1, AMPK, and SIRT-1 were examined. The interaction between AdipoR1 and Flotillin-1, or its effects on lipid rafts on regulating cell migration of MCF-7, was also investigated.ResultsAdipoR1 is a direct target of miR-3908. miR-3908 suppresses the expression of AdipoR1 and its downstream pathway genes, including AMPK, p-AMPK, and SIRT-1. miR-3908 enhances the process of breast cancer cell clonogenicity. miR-3908 exerts its effects on the proliferation and migration of MCF-7 cells, which are mediated by lipid rafts regulating AdipoR1’s ability to bind Flotillin-1.ConclusionsmiR-3908 is a crucial mediator of the migration process in breast cancer cells. Lipid rafts regulate the interactions between AdipoR1 and Flotillin-1 and then the migration process associated with miR-3908 in MCF-7 cells. Our findings suggest that targeting miR-3908 and the lipid raft, may be a promising strategy for the treatment and prevention of breast cancer.

【 授权许可】

CC BY   
© The Author(s). 2017