0 327

Cited 14 times in

Na(+)-Ca(2+) exchanger targeting miR-132 prevents apoptosis of cardiomyocytes under hypoxic condition by suppressing Ca(2+) overload

Authors
 Soonchang Hong  ;  Jiyun Lee  ;  Hyang-Hee Seo  ;  Chang Yeon Lee  ;  Kyung-Jong Yoo  ;  Sung-Man Kim  ;  Seahyoung Lee  ;  Ki-Chul Hwang  ;  Eunhyun Choi 
Citation
 BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, Vol.460(4) : 931-937, 2015 
Journal Title
 BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 
ISSN
 0006-291X 
Issue Date
2015
Keywords
NCX ; Ca2þ overload ; Hypoxia ; miR-132 ; Cardiomyocyte ; Apoptosis
Abstract
During ischemia-reperfusion (IR) injury of the heart, Ca(2+) overload occurs, leading to cardiomyocyte dysfunction and eventual cell death by apoptosis. Since preventing Ca(2+) overload during IR injury has been reported to protect cardiomyocytes, interrupting Ca(2+) signaling cascades leading to Ca(2+) overload may exert protective effect on cardiomyocytes under hypoxic condition. One of the key regulators of the intracellular Ca(2+) level during IR injury is Na(+)-Ca(2+) exchanger 1 (NCX1), whose down-regulation during IR injury conferred protection of heart. In the present study, we examined whether down-regulation of NCX1 using exogenous microRNA ameliorates apoptosis of cardiomyocytes under hypoxic condition. Here, we identified miR-132 as a novel microRNA targeting the NCX1, whose expression increased during hypoxia. Delivery of miR-132 suppressed the increase of intracellular Ca(2+) in cardiomyocytes under hypoxia, and the expressions of apoptotic molecules, such as Bax, cytochrome C, and caspase 3, and the number of apoptotic cells were also decreased by exogenous miR-132 treatment. These results suggest the potential of miR-132 as an effective therapeutic agent against IR damage to heart by preventing Ca(2+) overload during hypoxic condition and warrant further studies to validate its anti-apoptotic effect in vivo.
Full Text
http://www.sciencedirect.com/science/article/pii/S0006291X15005951
DOI
10.1016/j.bbrc.2015.03.129
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Thoracic and Cardiovascular Surgery (흉부외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Seo, Hyang Hee(서향희)
Yoo, Kyung Jong(유경종) ORCID logo https://orcid.org/0000-0002-9858-140X
Lee, Ji Yun(이지윤)
Hong, Soon Chang(홍순창)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141396
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links