Serotonin (5-HT) paiticipates in the development of cardiac hypertrophy through 5-HT2A serotonin receptors. The hypertrophic growth of cardiomyoblasts induced by 5-HT2A receptors involves the activation of the Ca2+ responsive calcineurin/NFAT pathway However, the mechanism whereby NFAT is activated by 5-HT2A receptors remains indeterminate In this study, we examined whether transient receptor potential canonical (TRPC) channels participate in NFAT activation and hypertrophic response triggered by 5-HT We demonstrate that TRPC1 expression is upregulated in 5-HT-treated rat cardiomyoblasts whereas TRPC6 is induced in a mouse Model of heart hypertrophy Moreover, TRPC1 knockdown by small interfering RNA inhibits NFAT activation and hypertrophic response mediated by 5-HT2A receptors These findings provide new insights about a mechanistic basis for the activation of the calcineurin/NFAT pathway by 5-HT2A receptors and highlight the critical role of TRPC1 in the development of cardiac hypertrophy. (C) 2009 Elsevier Inc. All rights reserved
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Alvarez-Herrera, Samantha
Vales, Mauricio Rosel
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Clin Esquizofrenia, Inst Nacl Psiquiatria Ramon Fuente Muniz, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Vales, Mauricio Rosel
Perez-Sanchez, Gilberto
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Perez-Sanchez, Gilberto
Becerril-Villanueva, Enrique
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Becerril-Villanueva, Enrique
Flores-Medina, Yvonne
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Subdirecc Invest Clin, Mexico City 14370, DF, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Flores-Medina, Yvonne
Maldonado-Garcia, Jose Luis
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Escuela Nacl Ciencias Biol, Departamemto Inmunol, Dept Inmunol, Mexico City 11340, Mexico
Univ Nacl Autonoma Mexico, Fac Med, Dept Bioquim, Mexico City 04510, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Maldonado-Garcia, Jose Luis
Saracco-Alvarez, Ricardo
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Subdirecc Invest Clin, Mexico City 14370, DF, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Saracco-Alvarez, Ricardo
Escamilla, Raul
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Subdirecc Consulta Externa, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico
Escamilla, Raul
Pavon, Lenin
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Inst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, MexicoInst Nacl Psiquiatria Ramon de la Fuente Muniz, Direcc Invest Neurociencias, Lab Psicoinmunol, Mexico City 14370, Mexico