Induction of high STAT1 expression in transgenic mice with LQTS and heart failure.

Abstract:

:Cardiac-specific expression of the N1325S mutation of SCN5A in transgenic mouse hearts (TG-NS) resulted in long QT syndrome (LQTS), ventricular arrhythmias (VT), and heart failure. In this study we carried out oligonucleotide mircoarray analysis to identify genes that are differentially expressed in the TG-NS mouse hearts. We identified 33 genes in five different functional groups that showed differential expression. None of the 33 genes are ion channel genes. STAT1, which encodes a transcription factor involved in apoptosis and interferon response, showed the most significant difference of expression between TG-NS and control mice (a nearly 10-fold increase in expression, P=4x10(-6)). The results were further confirmed by quantitative real-time PCR and Western blot analyses. Accordingly, many interferon response genes also showed differential expression in TG-NS hearts. This study represents the first microarray analysis for LQTS and implicates STAT1 in the pathogenesis and progression of LQTS and heart failure.

authors

Wu L,Archacki SR,Zhang T,Wang QK

doi

10.1016/j.bbrc.2007.04.119

subject

Has Abstract

pub_date

2007-06-29 00:00:00

pages

449-54

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(07)00865-0

journal_volume

358

pub_type

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