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Knockdown of peroxisome proliferator-activated receptor gamma coactivator-1 alpha increased apoptosis of human endometrial cancer HEC-1A cells

Authors Yang H, Yang R, Liu H, Ren Z, Wang C, Li D, Ma X

Received 19 December 2015

Accepted for publication 10 March 2016

Published 24 August 2016 Volume 2016:9 Pages 5329—5338


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Professor Min Li

Hui Yang, Rui Yang, Hao Liu, Zhongqian Ren, Cuicui Wang, Da Li, Xiaoxin Ma

Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China

Background: Peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) coactivates multiple transcription factors and regulates several metabolic processes. In this study, we focused on the roles of PGC-1α in the apoptosis of endometrial cancer HEC-1A cells.
Materials and methods: PGC-1α expression in the HEC-1A cells was detected with real-time polymerase chain reaction and Western blot. Small interfering RNA directed against PGC-1α was designed and synthesized, and RNA interference technology was used to knock down PGC-1α mRNA and protein expression. Cell apoptosis, cell cycle, and mitochondrial membrane potential were then analyzed using flow cytometry. The expression of apoptotic proteins, Bcl-2 and Bax, was detected with Western blot.
Results: The specific downregulation of PGC-1α expression in the HEC-1A cells increased their apoptosis through the mitochondrial apoptotic pathway by reducing the expression of Bcl-2 and increasing the expression of Bax.
Conclusion: These results suggest that PGC-1α influences the apoptosis of HEC-1A cells and also provides a molecular basis for further investigation of the apoptotic mechanism in human endometrial cancer.

Keywords: endometrial cancer, PGC-1α, apoptosis, Bcl-2, Bax

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