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The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy

Cardiac muscle adapts to hemodynamic stress by altering myocyte size and function, resulting in cardiac hypertrophy. Alteration in myocyte calcium homeostasis is known to be an initial signal in cardiac hypertrophy signaling. Transient receptor potential melastatin 4 protein (TRPM4) is a calcium-act...

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Autores principales: Kecskés, Miklós, Jacobs, Griet, Kerselaers, Sara, Syam, Ninda, Menigoz, Aurélie, Vangheluwe, Peter, Freichel, Marc, Flockerzi, Veit, Voets, Thomas, Vennekens, Rudi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4456993/
https://www.ncbi.nlm.nih.gov/pubmed/26043922
http://dx.doi.org/10.1007/s00395-015-0501-x
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author Kecskés, Miklós
Jacobs, Griet
Kerselaers, Sara
Syam, Ninda
Menigoz, Aurélie
Vangheluwe, Peter
Freichel, Marc
Flockerzi, Veit
Voets, Thomas
Vennekens, Rudi
author_facet Kecskés, Miklós
Jacobs, Griet
Kerselaers, Sara
Syam, Ninda
Menigoz, Aurélie
Vangheluwe, Peter
Freichel, Marc
Flockerzi, Veit
Voets, Thomas
Vennekens, Rudi
author_sort Kecskés, Miklós
collection PubMed
description Cardiac muscle adapts to hemodynamic stress by altering myocyte size and function, resulting in cardiac hypertrophy. Alteration in myocyte calcium homeostasis is known to be an initial signal in cardiac hypertrophy signaling. Transient receptor potential melastatin 4 protein (TRPM4) is a calcium-activated non-selective cation channel, which plays a role in regulating calcium influx and calcium-dependent cell functions in many cell types including cardiomyocytes. Selective deletion of TRPM4 from the heart muscle in mice resulted in an increased hypertrophic growth after chronic angiotensin (AngII) treatment, compared to WT mice. The enhanced hypertrophic response was also traceable by the increased expression of hypertrophy-related genes like Rcan1, ANP, and α-Actin. Intracellular calcium measurements on isolated ventricular myocytes showed significantly increased store-operated calcium entry upon AngII treatment in myocytes lacking the TRPM4 channel. Elevated intracellular calcium is a key factor in the development of pathological cardiac hypertrophy, leading to the activation of intracellular signaling pathways. In agreement with this, we observed significantly higher Rcan1 mRNA level, calcineurin enzyme activity and protein level in lysates from TRPM4-deficient mice heart compared to WT after AngII treatment. Collectively, these observations are consistent with a model in which TRPM4 is a regulator of calcium homeostasis in cardiomyocytes after AngII stimulation. TRPM4 contributes to the regulation of driving force for store-operated calcium entry and thereby the activation of the calcineurin–NFAT pathway and the development of pathological hypertrophy. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00395-015-0501-x) contains supplementary material, which is available to authorized users.
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spelling pubmed-44569932015-06-10 The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy Kecskés, Miklós Jacobs, Griet Kerselaers, Sara Syam, Ninda Menigoz, Aurélie Vangheluwe, Peter Freichel, Marc Flockerzi, Veit Voets, Thomas Vennekens, Rudi Basic Res Cardiol Original Contribution Cardiac muscle adapts to hemodynamic stress by altering myocyte size and function, resulting in cardiac hypertrophy. Alteration in myocyte calcium homeostasis is known to be an initial signal in cardiac hypertrophy signaling. Transient receptor potential melastatin 4 protein (TRPM4) is a calcium-activated non-selective cation channel, which plays a role in regulating calcium influx and calcium-dependent cell functions in many cell types including cardiomyocytes. Selective deletion of TRPM4 from the heart muscle in mice resulted in an increased hypertrophic growth after chronic angiotensin (AngII) treatment, compared to WT mice. The enhanced hypertrophic response was also traceable by the increased expression of hypertrophy-related genes like Rcan1, ANP, and α-Actin. Intracellular calcium measurements on isolated ventricular myocytes showed significantly increased store-operated calcium entry upon AngII treatment in myocytes lacking the TRPM4 channel. Elevated intracellular calcium is a key factor in the development of pathological cardiac hypertrophy, leading to the activation of intracellular signaling pathways. In agreement with this, we observed significantly higher Rcan1 mRNA level, calcineurin enzyme activity and protein level in lysates from TRPM4-deficient mice heart compared to WT after AngII treatment. Collectively, these observations are consistent with a model in which TRPM4 is a regulator of calcium homeostasis in cardiomyocytes after AngII stimulation. TRPM4 contributes to the regulation of driving force for store-operated calcium entry and thereby the activation of the calcineurin–NFAT pathway and the development of pathological hypertrophy. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00395-015-0501-x) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2015-06-05 2015 /pmc/articles/PMC4456993/ /pubmed/26043922 http://dx.doi.org/10.1007/s00395-015-0501-x Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Contribution
Kecskés, Miklós
Jacobs, Griet
Kerselaers, Sara
Syam, Ninda
Menigoz, Aurélie
Vangheluwe, Peter
Freichel, Marc
Flockerzi, Veit
Voets, Thomas
Vennekens, Rudi
The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title_full The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title_fullStr The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title_full_unstemmed The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title_short The Ca(2+)-activated cation channel TRPM4 is a negative regulator of angiotensin II-induced cardiac hypertrophy
title_sort ca(2+)-activated cation channel trpm4 is a negative regulator of angiotensin ii-induced cardiac hypertrophy
topic Original Contribution
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4456993/
https://www.ncbi.nlm.nih.gov/pubmed/26043922
http://dx.doi.org/10.1007/s00395-015-0501-x
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