Abstract
The heart responds to stress signals by hypertrophic growth, which is accompanied by activation of the MEF2 transcription factor and reprogramming of cardiac gene expression. We show here that class II histone deacetylases (HDACs), which repress MEF2 activity, are substrates for a stress-responsive kinase specific for conserved serines that regulate MEF2-HDAC interactions. Signal-resistant HDAC mutants lacking these phosphorylation sites are refractory to hypertrophic signaling and inhibit cardiomyocyte hypertrophy. Conversely, mutant mice lacking the class II HDAC, HDAC9, are sensitized to hypertrophic signals and exhibit stress-dependent cardiomegaly. Thus, class II HDACs act as signal-responsive suppressors of the transcriptional program governing cardiac hypertrophy and heart failure.
MeSH Terms
Aging/genetics,metabolism,pathology
Animals
Calcineurin/genetics,metabolism
Calcium-Calmodulin-Dependent Protein Kinase Type 1
Calcium-Calmodulin-Dependent Protein Kinases/genetics,metabolism
Cardiomegaly/enzymology,genetics,physiopathology
Carrier Proteins/genetics,metabolism
DNA-Binding Proteins/genetics,metabolism
Enzyme Inhibitors/pharmacology
Gene Expression Regulation, Developmental/physiology
Heart/embryology
Histone Deacetylase 2
Histone Deacetylases/deficiency,genetics,metabolism
Hypertension/complications,pathology,physiopathology
MEF2 Transcription Factors
Male
Mice
Mice, Knockout
Mutation/genetics
Myocardium/enzymology,pathology
Myogenic Regulatory Factors
Phosphorylation
Phosphotransferases/genetics,metabolism
Repressor Proteins
Signal Transduction/genetics
Stress, Physiological/enzymology,genetics,physiopathology
Transcription Factors/genetics,metabolism
Transcriptional Activation/physiology
Chemicals
Carrier Proteins
DNA-Binding Proteins
Enzyme Inhibitors
MEF2 Transcription Factors
Myogenic Regulatory Factors
Repressor Proteins
Transcription Factors
Phosphotransferases
CAMK1 protein, human
Calcium-Calmodulin-Dependent Protein Kinase Type 1
Calcium-Calmodulin-Dependent Protein Kinases
Camk1 protein, mouse
Pnck protein, mouse
Calcineurin
HDAC9 protein, human
Hdac2 protein, mouse
Hdac5 protein, mouse
Hdac9 protein, mouse
Histone Deacetylase 2
Histone Deacetylases
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Zhang Chun Li
Department of Molecular Biology, University of Texas Southwestern Medical Center, 6000 Harry Hines Boulevard, Dallas 75390, USA.
McKinsey Timothy A
Chang Shurong
Antos Christopher L
Hill Joseph A
Olson Eric N
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