MCB
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Yanazume, T.
Right arrow Articles by Kita, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Yanazume, T.
Right arrow Articles by Kita, T.

 Previous Article  |  Next Article 

Molecular and Cellular Biology, May 2003, p. 3593-3606, Vol. 23, No. 10
0270-7306/03/$08.00+0     DOI: 10.1128/MCB.23.10.3593-3606.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Cardiac p300 Is Involved in Myocyte Growth with Decompensated Heart Failure

Tetsuhiko Yanazume,1 Koji Hasegawa,1* Tatsuya Morimoto,1 Teruhisa Kawamura,1 Hiromichi Wada,1 Akira Matsumori,1 Yosuke Kawase,2 Maretoshi Hirai,1 and Toru Kita1

Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto 606-8507,1 Pharmacological Technology Laboratory, Chugai Pharmaceutical Co., Ltd., Shizuoka, Japan2

Received 13 January 2003/ Accepted 20 February 2003

A variety of stresses on the heart initiate a number of subcellular signaling pathways, which finally reach the nuclei of cardiac myocytes and cause myocyte hypertrophy with heart failure. However, common nuclear pathways that lead to this state are unknown. A zinc finger protein, GATA-4, is one of the transcription factors that mediate changes in gene expression during myocardial-cell hypertrophy. p300 not only acts as a transcriptional coactivator of GATA-4, but also possesses an intrinsic histone acetyltransferase activity. In primary cardiac myocytes derived from neonatal rats, we show that stimulation with phenylephrine increased an acetylated form of GATA-4 and its DNA-binding activity, as well as expression of p300. A dominant-negative mutant of p300 suppressed phenylephrine-induced nuclear acetylation, activation of GATA-4-dependent endothelin-1 promoters, and hypertrophic responses, such as increase in cell size and sarcomere organization. In sharp contrast to the activation of cardiac MEK-1, which phosphorylates GATA-4 and causes compensated hypertrophy in vivo, p300-mediated acetylation of mouse cardiac nuclear proteins, including GATA-4, results in marked eccentric dilatation and systolic dysfunction. These findings suggest that p300-mediated nuclear acetylation plays a critical role in the development of myocyte hypertrophy and represents a pathway that leads to decompensated heart failure.

* Corresponding author. Mailing address: Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Kawara-cho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan. Phone: 81-75-751-3190. Fax: 81-75-751-3203. E-mail: koj{at}kuhp.kyoto-u.ac.jp.

Molecular and Cellular Biology, May 2003, p. 3593-3606, Vol. 23, No. 10
0022-538X/03/$08.00+0     DOI: 10.1128/MCB.23.10.3593-3606.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:



Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. J. Virol. Eukaryot. Cell
Microbiol. Mol. Biol. Rev. Clin. Vaccine Immunol. All ASM Journals

Copyright © 2003 by the American Society for Microbiology. All rights reserved.