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The histone 3 lysine 9 methyltransferase inhibitor chaetocin improves prognosis in a rat model of high salt diet-induced heart failure.

Abstract：

:Histone acetylation has been linked to cardiac hypertrophy and heart failure. However, the pathological implications of changes in histone methylation and the effects of interventions with histone methyltransferase inhibitors for heart failure have not been fully clarified. Here, we focused on H3K9me3 status in the heart and investigated the effects of the histone H3K9 methyltransferase inhibitor chaetocin on prognoses in Dahl salt-sensitive rats, an animal model of chronic heart failure. Chaetocin prolonged survival and restored mitochondrial dysfunction. ChIP-seq analysis demonstrated that chronic stress to the heart induced H3K9me3 elevation in thousands of repetitive elements, including intronic regions of mitochondria-related genes, such as the gene encoding peroxisome proliferator-activated receptor-gamma coactivator 1 alpha. Furthermore, chaetocin reversed this effect on these repetitive loci. These data suggested that excessive heterochromatinization of repetitive elements of mitochondrial genes in the failing heart may lead to the silencing of genes and impair heart function. Thus, chaetocin may be a potential therapeutic agent for chronic heart failure.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Ono T,Kamimura N,Matsuhashi T,Nagai T,Nishiyama T,Endo J,Hishiki T,Nakanishi T,Shimizu N,Tanaka H,Ohta S,Suematsu M,Ieda M,Sano M,Fukuda K,Kaneda R

doi

10.1038/srep39752

subject

Has Abstract

pub_date

2017-01-04 00:00:00

pages

39752

issn

2045-2322

pii

srep39752

journal_volume

7

pub_type

杂志文章

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