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Long noncoding RNA Chast promotes cardiac remodeling.

Abstract：

:Recent studies highlighted long noncoding RNAs (lncRNAs) to play an important role in cardiac development. However, understanding of lncRNAs in cardiac diseases is still limited. Global lncRNA expression profiling indicated that several lncRNA transcripts are deregulated during pressure overload-induced cardiac hypertrophy in mice. Using stringent selection criteria, we identified Chast (cardiac hypertrophy-associated transcript) as a potential lncRNA candidate that influences cardiomyocyte hypertrophy. Cell fractionation experiments indicated that Chast is specifically up-regulated in cardiomyocytes in vivo in transverse aortic constriction (TAC)-operated mice. In accordance, CHAST homolog in humans was significantly up-regulated in hypertrophic heart tissue from aortic stenosis patients and in human embryonic stem cell-derived cardiomyocytes upon hypertrophic stimuli. Viral-based overexpression of Chast was sufficient to induce cardiomyocyte hypertrophy in vitro and in vivo. GapmeR-mediated silencing of Chast both prevented and attenuated TAC-induced pathological cardiac remodeling with no early signs on toxicological side effects. Mechanistically, Chast negatively regulated Pleckstrin homology domain-containing protein family M member 1 (opposite strand of Chast), impeding cardiomyocyte autophagy and driving hypertrophy. These results indicate that Chast can be a potential target to prevent cardiac remodeling and highlight a general role of lncRNAs in heart diseases.

journal_name

Sci Transl Med

journal_title

Science translational medicine

authors

Viereck J,Kumarswamy R,Foinquinos A,Xiao K,Avramopoulos P,Kunz M,Dittrich M,Maetzig T,Zimmer K,Remke J,Just A,Fendrich J,Scherf K,Bolesani E,Schambach A,Weidemann F,Zweigerdt R,de Windt LJ,Engelhardt S,Dandekar T,

doi

10.1126/scitranslmed.aaf1475

subject

Has Abstract

pub_date

2016-02-17 00:00:00

pages

326ra22

issue

326

eissn

1946-6234

issn

1946-6242

pii

8/326/326ra22

journal_volume

8

pub_type

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