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Loss of Mouse P2Y6 Nucleotide Receptor Is Associated with Physiological Macrocardia and Amplified Pathological Cardiac Hypertrophy
被引:22
|作者:
Clouet, Sophie
[1
]
Di Pietrantonio, Larissa
[1
]
Daskalopoulos, Evangelos-Panagiotis
[2
]
Esfahani, Hrag
[3
]
Horckmans, Michael
[1
]
Vanorle, Marion
[1
]
Lemaire, Anne
[1
]
Balligand, Jean-Luc
[3
]
Beauloye, Christophe
[2
]
Boeynaems, Jean-Marie
[1
,4
]
Communi, Didier
[1
]
机构:
[1] Univ Libre Bruxelles, IRIBHM, Inst Interdisciplinary Res, B-1070 Brussels, Belgium
[2] Catholic Univ Louvain, Inst Rech Expt & Clin, Pole Cardiovasc Res, B-1200 Brussels, Belgium
[3] Catholic Univ Louvain, Unit Pharmacol & Therapeut, UCL FATH 5349, B-1200 Brussels, Belgium
[4] Univ Libre Bruxelles, Erasme Hosp, Dept Lab Med, B-1070 Brussels, Belgium
关键词:
UTP REDUCES INFARCT;
MYOCARDIAL HYPERTROPHY;
KNOCKOUT MICE;
NATRIURETIC PEPTIDES;
HEART FUNCTION;
RAT-HEART;
CARDIOMYOCYTES;
EXPRESSION;
ISCHEMIA;
PROTEINS;
D O I:
10.1074/jbc.M115.684118
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The study of the mechanisms leading to cardiac hypertrophy is essential to better understand cardiac development and regeneration. Pathological conditions such as ischemia or pressure overload can induce a release of extracellular nucleotides within the heart. We recently investigated the potential role of nucleotide P2Y receptors in cardiac development. We showed that adult P2Y(4)-null mice displayed microcardia resulting from defective cardiac angiogenesis. Here we show that loss of another P2Y subtype called P2Y(6), a UDP receptor, was associated with a macrocardia phenotype and amplified pathological cardiac hypertrophy. Cardiomyocyte proliferation and size were increased in vivo in hearts of P2Y(6)-null neonates, resulting in enhanced postnatal heart growth. We then observed that loss of P2Y(6) receptor enhanced pathological cardiac hypertrophy induced after isoproterenol injection. We identified an inhibitory effect of UDP on in vitro isoproterenol-induced cardiomyocyte hyperplasia and hypertrophy. The present study identifies mouse P2Y(6) receptor as a regulator of cardiac development and cardiomyocyte function. P2Y(6) receptor could constitute a therapeutic target to regulate cardiac hypertrophy.
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页码:15841 / 15852
页数:12
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