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Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S
Hydrogen Sulfide (H(2)S), recently identified as the third endogenously produced gaseous messenger, is a promising therapeutic prospect for multiple cardio-pathological states, including myocardial hypertrophy. The molecular niche of H(2)S in normal or diseased cardiac cells is, however, sparsely un...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5841415/ https://www.ncbi.nlm.nih.gov/pubmed/29531803 http://dx.doi.org/10.1038/s41420-017-0010-9 |
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author | Chhabra, Aastha Mishra, Shalini Kumar, Gaurav Gupta, Asheesh Keshri, Gaurav Kumar Bharti, Brij Meena, Ram Niwas Prabhakar, Amit Kumar Singh, Dinesh Kumar Bhargava, Kalpana Sharma, Manish |
author_facet | Chhabra, Aastha Mishra, Shalini Kumar, Gaurav Gupta, Asheesh Keshri, Gaurav Kumar Bharti, Brij Meena, Ram Niwas Prabhakar, Amit Kumar Singh, Dinesh Kumar Bhargava, Kalpana Sharma, Manish |
author_sort | Chhabra, Aastha |
collection | PubMed |
description | Hydrogen Sulfide (H(2)S), recently identified as the third endogenously produced gaseous messenger, is a promising therapeutic prospect for multiple cardio-pathological states, including myocardial hypertrophy. The molecular niche of H(2)S in normal or diseased cardiac cells is, however, sparsely understood. Here, we show that β-adrenergic receptor (β-AR) overstimulation, known to produce hypertrophic effects in cardiomyocytes, rapidly decreased endogenous H(2)S levels. The preservation of intracellular H(2)S levels under these conditions strongly suppressed hypertrophic responses to adrenergic overstimulation, thus suggesting its intrinsic role in this process. Interestingly, unbiased global transcriptome sequencing analysis revealed an integrated metabolic circuitry, centrally linked by NADPH homeostasis, as the direct target of intracellular H(2)S augmentation. Within these gene networks, glucose-6-phosphate dehydrogenase (G6PD), the first and rate-limiting enzyme (producing NADPH) in pentose phosphate pathway, emerged as the critical node regulating cellular effects of H(2)S. Utilizing both cellular and animal model systems, we show that H(2)S-induced elevated G6PD activity is critical for the suppression of cardiac hypertrophy in response to adrenergic overstimulation. We also describe experimental evidences suggesting multiple processes/pathways involved in regulation of G6PD activity, sustained over extended duration of time, in response to endogenous H(2)S augmentation. Our data, thus, revealed H(2)S as a critical endogenous regulator of cardiac metabolic circuitry, and also mechanistic basis for its anti-hypertrophic effects. |
format | Online Article Text |
id | pubmed-5841415 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-58414152018-03-12 Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S Chhabra, Aastha Mishra, Shalini Kumar, Gaurav Gupta, Asheesh Keshri, Gaurav Kumar Bharti, Brij Meena, Ram Niwas Prabhakar, Amit Kumar Singh, Dinesh Kumar Bhargava, Kalpana Sharma, Manish Cell Death Discov Article Hydrogen Sulfide (H(2)S), recently identified as the third endogenously produced gaseous messenger, is a promising therapeutic prospect for multiple cardio-pathological states, including myocardial hypertrophy. The molecular niche of H(2)S in normal or diseased cardiac cells is, however, sparsely understood. Here, we show that β-adrenergic receptor (β-AR) overstimulation, known to produce hypertrophic effects in cardiomyocytes, rapidly decreased endogenous H(2)S levels. The preservation of intracellular H(2)S levels under these conditions strongly suppressed hypertrophic responses to adrenergic overstimulation, thus suggesting its intrinsic role in this process. Interestingly, unbiased global transcriptome sequencing analysis revealed an integrated metabolic circuitry, centrally linked by NADPH homeostasis, as the direct target of intracellular H(2)S augmentation. Within these gene networks, glucose-6-phosphate dehydrogenase (G6PD), the first and rate-limiting enzyme (producing NADPH) in pentose phosphate pathway, emerged as the critical node regulating cellular effects of H(2)S. Utilizing both cellular and animal model systems, we show that H(2)S-induced elevated G6PD activity is critical for the suppression of cardiac hypertrophy in response to adrenergic overstimulation. We also describe experimental evidences suggesting multiple processes/pathways involved in regulation of G6PD activity, sustained over extended duration of time, in response to endogenous H(2)S augmentation. Our data, thus, revealed H(2)S as a critical endogenous regulator of cardiac metabolic circuitry, and also mechanistic basis for its anti-hypertrophic effects. Nature Publishing Group UK 2018-02-01 /pmc/articles/PMC5841415/ /pubmed/29531803 http://dx.doi.org/10.1038/s41420-017-0010-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Chhabra, Aastha Mishra, Shalini Kumar, Gaurav Gupta, Asheesh Keshri, Gaurav Kumar Bharti, Brij Meena, Ram Niwas Prabhakar, Amit Kumar Singh, Dinesh Kumar Bhargava, Kalpana Sharma, Manish Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title | Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title_full | Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title_fullStr | Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title_full_unstemmed | Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title_short | Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H(2)S |
title_sort | glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by h(2)s |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5841415/ https://www.ncbi.nlm.nih.gov/pubmed/29531803 http://dx.doi.org/10.1038/s41420-017-0010-9 |
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