Cited 3 times in

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

Title
 Na(+)-Ca(2+) exchanger targeting miR-132 prevents apoptosis of cardiomyocytes under hypoxic condition by suppressing Ca(2+) overload 
Authors
 Jiyun Lee ; Hyang-Hee Seo ; Soonchang Hong ; Chang Yeon Lee ; Kyung-Jong Yoo ; Sung-Man Kim ; Seahyoung Lee ; Ki-Chul Hwang ; Eunhyun Choi 
Issue Date
2015
Journal Title
 Biochemical and Biophysical Research Communications 
ISSN
 0006-291X 
Citation
 Biochemical and Biophysical Research Communications, Vol.460(4) : 931~937, 2015 
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.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/141396
DOI
10.1016/j.bbrc.2015.03.129
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Thoracic & Cardiovascular Surgery
1. 연구논문 > 1. College of Medicine > Yonsei Biomedical Research Center
Yonsei Authors
사서에게 알리기
  feedback
Link
 http://www.sciencedirect.com/science/article/pii/S0006291X15005951
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

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

Browse