miR-211 inhibits the proliferation of human breast cancer cell lines through targeting TFAM
10.3969/j.issn.1001-6325.2017.11.018
- VernacularTitle:miR-211通过靶向调控 TFAM抑制人乳腺癌细胞系增殖
- Author:
chong Shun XIAO
1
;
chuan Han LUO
;
shi Jun QIN
Author Information
1. 广西医科大学第八附属医院贵港市人民医院甲状腺乳腺外科
- Keywords:
miR-211;
TFAM;
proliferation;
breast cancer
- From:
Basic & Clinical Medicine
2017;37(11):1590-1595
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the role of miR-211/TFAM in the regulation of proliferation of breast cancer cells .Methods In the present study , we transfected breast cancer cells with miR-211 mimics or miR-211 inhibitor to achieve miR-211 and detected the expression of miR-211 and the expression level of TFAM proteins in response to miR-211 overexpression or miR-211 silencing;luciferase reporter gene plasmid with or without a six base pairs mutation in the 3′UTR of TFAM ( mut-TFAM/wt-TFAM) were conducted and co-transfected with miR-211 mimics or miR-211 inhibitor, then the change of the luciferase activity was detected;then pcDNA3.1/TFAM plasmid was constructed and co-transfected with miR-211 mimics or miR-211 inhibitor, TFAM protein expression level changes were determined in response to miR-211 overexpression or miR-211 silencing; lastly the cell proliferation was determined in response to mimics NC/miR-211 mimics and pcDNA3.1/TFAM co-transfection.Results Overex-pression of miR-211 inhibits the expression of TFAM protein , miR-211 silencing promote TFAM protein expression;miR-211 can regulate the expression of TFAM by direct targeting;TFAM over expression was achieved by pcDNA3.1/TFAM transfection , and TFAM overe xpression can restore the inhibitory effect of miR-211 on TFAM;miR-211 inhibited the growth and proliferation of breast cancer cells , TFAM can promote the growth and proliferation of breast cancer cells;TFAM restored the inhibitory effect of miR-211 on growth and proliferation of breast cancer cells .Conclusions miR-211 regulates the growth of breast cancer cell with targeting of HMGB .
