Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification

Los cambios epigenéticos inducidos por factores ambientales son cada vez más relevantes en las enfermedades cardiovasculares. El componente molecular más frecuente en la hipertrofia cardíaca es la reactivación de genes fetales causada por diversas patologías, entre ellas obesidad, hipertensión arter...

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Fecha de publicación:
2023
Institución:
Universidad del Rosario
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Repositorio EdocUR - U. Rosario
Idioma:
eng
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oai:repository.urosario.edu.co:10336/43309
Acceso en línea:
https://doi.org/10.3389/fcell.2022.1070338
https://repository.urosario.edu.co/handle/10336/43309
Palabra clave:
Epigenetica
Enfermedad cardiaca hipertrofica
Modificaciones de la cromatina
Epigenetic
Hypertrophic heart disease
Chromatin modification
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Attribution-NonCommercial-NoDerivatives 4.0 International
id EDOCUR2_f00051ef92741d3c4f26c3bbda503136
oai_identifier_str oai:repository.urosario.edu.co:10336/43309
network_acronym_str EDOCUR2
network_name_str Repositorio EdocUR - U. Rosario
repository_id_str
dc.title.none.fl_str_mv Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
dc.title.TranslatedTitle.none.fl_str_mv Perspectivas Moleculares en la enfermedad Cardiaca hipertrofica: un abordajes epigenetico desde las modificaciones de la cromatina
title Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
spellingShingle Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
Epigenetica
Enfermedad cardiaca hipertrofica
Modificaciones de la cromatina
Epigenetic
Hypertrophic heart disease
Chromatin modification
title_short Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
title_full Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
title_fullStr Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
title_full_unstemmed Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
title_sort Molecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modification
dc.contributor.advisor.none.fl_str_mv Lizcano, Fernando
dc.subject.none.fl_str_mv Epigenetica
Enfermedad cardiaca hipertrofica
Modificaciones de la cromatina
topic Epigenetica
Enfermedad cardiaca hipertrofica
Modificaciones de la cromatina
Epigenetic
Hypertrophic heart disease
Chromatin modification
dc.subject.keyword.none.fl_str_mv Epigenetic
Hypertrophic heart disease
Chromatin modification
description Los cambios epigenéticos inducidos por factores ambientales son cada vez más relevantes en las enfermedades cardiovasculares. El componente molecular más frecuente en la hipertrofia cardíaca es la reactivación de genes fetales causada por diversas patologías, entre ellas obesidad, hipertensión arterial, estenosis de la válvula aórtica y causas congénitas. A pesar de las múltiples investigaciones realizadas para lograr información sobre los componentes moleculares de esta patología, su influencia en las estrategias terapéuticas es relativamente escasa. Recientemente se ha obtenido nueva información sobre las proteínas que modifican la expresión de genes fetales reactivados en la hipertrofia cardíaca. Estas proteínas modifican el ADN de forma covalente e inducen cambios en la estructura de la cromatina. La relación entre histonas y ADN tiene un reconocido control en la expresión de genes condicionado por el ambiente e induce variaciones epigenéticas. Las modificaciones epigenéticas que regulan la hipertrofia cardíaca patológica se realizan mediante cambios en la estabilidad genómica, la arquitectura de la cromatina y la expresión genética. La trimetilación de la histona 3 en la lisina 4, 9 o 27 (H3-K4; -K9; -K27me3) y la desmetilación de la histona en la lisina 9 y 79 (H3-K9; -K79) son mediadores de la reprogramación en la hipertrofia patológica. Dentro de los modificadores de la arquitectura de la cromatina, las histonas desmetilasas son un grupo de proteínas que se ha demostrado que desempeñan un papel esencial en la diferenciación de las células cardíacas y también pueden ser componentes en el desarrollo de la hipertrofia cardíaca. En el presente trabajo se revisa el conocimiento actual sobre la influencia de las modificaciones epigenéticas en la expresión de genes implicados en la hipertrofia cardíaca y su posible abordaje terapéutico.
publishDate 2023
dc.date.created.none.fl_str_mv 2023-01-18
dc.date.accessioned.none.fl_str_mv 2024-08-22T19:31:32Z
dc.date.available.none.fl_str_mv 2024-08-22T19:31:32Z
dc.type.none.fl_str_mv bachelorThesis
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_7a1f
dc.type.document.none.fl_str_mv Artículo
dc.type.spa.none.fl_str_mv Artículo
dc.identifier.doi.none.fl_str_mv https://doi.org/10.3389/fcell.2022.1070338
dc.identifier.uri.none.fl_str_mv https://repository.urosario.edu.co/handle/10336/43309
url https://doi.org/10.3389/fcell.2022.1070338
https://repository.urosario.edu.co/handle/10336/43309
dc.language.iso.none.fl_str_mv eng
language eng
dc.relation.uri.none.fl_str_mv https://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2022.1070338/full
dc.rights.*.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_14cb
dc.rights.acceso.none.fl_str_mv Bloqueado (Texto referencial)
dc.rights.uri.*.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
Bloqueado (Texto referencial)
http://creativecommons.org/licenses/by-nc-nd/4.0/
http://purl.org/coar/access_right/c_14cb
dc.format.extent.none.fl_str_mv 11 pp
dc.format.mimetype.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad del Rosario
dc.publisher.department.none.fl_str_mv Escuela de Medicina y Ciencias de la Salud
dc.publisher.program.none.fl_str_mv Especialización en Endocrinología
publisher.none.fl_str_mv Universidad del Rosario
institution Universidad del Rosario
dc.source.bibliographicCitation.none.fl_str_mv Bagchi, R. A., and Weeks, K. L. (2019). Histone deacetylases in cardiovascular and metabolic diseases. J. Mol. Cell. Cardiol. 130, 151–159. doi:10.1016/j.yjmcc.2019.04.003
Beacon, T. H., Xu, W., and Davie, J. R. (2020). Genomic landscape of transcriptionally active histone arginine methylation marks, H3R2me2s and H4R3me2a, relative to nucleosome depleted regions. Gene 742, 144593. doi:10.1016/j.gene.2020.144593
Bhutani, N., Burns, D. M., and Blau, H. M. (2011). DNA demethylation dynamics. Cell 146 (6), 866–872. doi:10.1016/j.cell.2011.08.042
Boeger, H., Griesenbeck, J., and Kornberg, R. D. (2008). Nucleosome retention and the stochastic nature of promoter chromatin remodeling for transcription. Cell 133 (4), 716–726. doi:10.1016/j.cell.2008.02.051
Borck, P. C., Guo, L. W., and Plutzky, J. (2020). BET epigenetic reader proteins in cardiovascular transcriptional programs. Circ. Res. 126 (9), 1190–1208. doi:10.1161/CIRCRESAHA.120.315929
Bradner, J. E., West, N., Grachan, M. L., Greenberg, E. F., Haggarty, S. J., Warnow, T., et al. (2010). Chemical phylogenetics of histone deacetylases. Nat. Chem. Biol. 6 (3), 238–243. doi:10.1038/nchembio.313
Bush, E. W., and McKinsey, T. A. (2009). Targeting histone deacetylases for heart failure. Expert Opin. Ther. Targets 13 (7), 767–784. doi:10.1517/14728220902939161
Care, A., Catalucci, D., Felicetti, F., Bonci, D., Addario, A., Gallo, P., et al. (2007). MicroRNA-133 controls cardiac hypertrophy. Nat. Med. 13 (5), 613–618. doi:10.1038/nm1582
Cech, T. R. (2012). The RNA worlds in context. Cold Spring Harb. Perspect. Biol. 4 (7), a006742. doi:10.1101/cshperspect.a006742
Clapier, C. R., Iwasa, J., Cairns, B. R., and Peterson, C. L. (2017). Mechanisms of action and regulation of ATP-dependent chromatin-remodelling complexes. Nat. Rev. Mol. Cell Biol. 18 (7), 407–422. doi:10.1038/nrm.2017.26
Coulter, J. B., O'Driscoll, C. M., and Bressler, J. P. (2013). Hydroquinone increases 5-hydroxymethylcytosine formation through ten eleven translocation 1 (TET1) 5-methylcytosine dioxygenase. J. Biol. Chem. 288 (40), 28792–28800. doi:10.1074/jbc.M113.491365
Domcke, S., Bardet, A. F., Adrian Ginno, P., Hartl, D., Burger, L., and Schubeler, D. (2015). Competition between DNA methylation and transcription factors determines binding of NRF1. Nature 528 (7583), 575–579. doi:10.1038/nature16462
Eom, G. H., Nam, Y. S., Oh, J. G., Choe, N., Min, H. K., Yoo, E. K., et al. (2014). Regulation of acetylation of histone deacetylase 2 by p300/CBP-associated factor/histone deacetylase 5 in the development of cardiac hypertrophy. Circ. Res. 114 (7), 1133–1143. doi:10.1161/CIRCRESAHA.114.303429
Fernandez-Ruiz, I. (2020). H19 in cardiac hypertrophy. Nat. Rev. Cardiol. 17 (10), 612. doi:10.1038/s41569-020-0434-4
Glezeva, N., Moran, B., Collier, P., Moravec, C. S., Phelan, D., Donnellan, E., et al. (2019). Targeted DNA methylation profiling of human cardiac tissue reveals novel epigenetic traits and gene deregulation across different heart failure patient subtypes. Circ. Heart Fail. 12 (3), e005765. doi:10.1161/CIRCHEARTFAILURE.118.005765
Gorica, E., Mohammed, S. A., Ambrosini, S., Calderone, V., Costantino, S., and Paneni, F. (2022). Epi-drugs in heart failure. Front. Cardiovasc. Med. 9, 923014. doi:10.3389/fcvm.2022.923014
Gresh, L., Bourachot, B., Reimann, A., Guigas, B., Fiette, L., Garbay, S., et al. (2005). The SWI/SNF chromatin-remodeling complex subunit SNF5 is essential for hepatocyte differentiation. EMBO J. 24 (18), 3313–3324. doi:10.1038/sj.emboj.7600802
Guo, X., Zhang, B. F., Zhang, J., Liu, G., Hu, Q., and Chen, J. (2022). The histone demthylase KDM3A protects the myocardium from ischemia/reperfusion injury via promotion of ETS1 expression. Commun. Biol. 5 (1), 270. doi:10.1038/s42003-022-03225-y
Han, P., Li, W., Lin, C. H., Yang, J., Shang, C., Nuernberg, S. T., et al. (2014). A long noncoding RNA protects the heart from pathological hypertrophy. Nature 514 (7520), 102–106. doi:10.1038/nature13596
Hohl, M., Ardehali, H., Azuaje, F. J., Breckenridge, R. A., Doehner, W., Eaton, P., et al. (2014). Meeting highlights from the 2013 European society of cardiology heart failure association winter meeting on translational heart failure research. Eur. J. Heart Fail. 16 (1), 6–14. doi:10.1002/ejhf.10
Jeong, M. Y., Lin, Y. H., Wennersten, S. A., Demos-Davies, K. M., Cavasin, M. A., Mahaffey, J. H., et al. (2018). Histone deacetylase activity governs diastolic dysfunction through a nongenomic mechanism. Sci. Transl. Med. 10 (427), eaao0144. doi:10.1126/scitranslmed.aao0144
Jiang, X. Y., Feng, Y. L., Ye, L. T., Li, X. H., Feng, J., Zhang, M. Z., et al. (2017). Inhibition of Gata4 and tbx5 by nicotine-mediated DNA methylation in myocardial differentiation. Stem Cell Rep. 8 (2), 290–304. doi:10.1016/j.stemcr.2016.12.016
Kee, H. J., Bae, E. H., Park, S., Lee, K. E., Suh, S. H., Kim, S. W., et al. (2013). HDAC inhibition suppresses cardiac hypertrophy and fibrosis in DOCA-salt hypertensive rats via regulation of HDAC6/HDAC8 enzyme activity. Kidney Blood Press. Res. 37 (4-5), 229–239. doi:10.1159/000350148
Kumarswamy, R., Bauters, C., Volkmann, I., Maury, F., Fetisch, J., Holzmann, A., et al. (2014). Circulating long noncoding RNA, LIPCAR, predicts survival in patients with heart failure. Circ. Res. 114 (10), 1569–1575. doi:10.1161/CIRCRESAHA.114.303915
Li, H., Fan, J., Yin, Z., Wang, F., Chen, C., and Wang, D. W. (2016). Identification of cardiac-related circulating microRNA profile in human chronic heart failure. Oncotarget 7 (1), 33–45. doi:10.18632/oncotarget.6631
Liu, L., An, X., Li, Z., Song, Y., Li, L., Zuo, S., et al. (2016). The H19 long noncoding RNA is a novel negative regulator of cardiomyocyte hypertrophy. Cardiovasc. Res. 111 (1), 56–65. doi:10.1093/cvr/cvw078
Lizcano, F., and Garcia, J. (2012). Epigenetic control and cancer: the potential of histone demethylases as therapeutic targets. Pharm. (Basel) 5 (9), 963–990. doi:10.3390/ph5090963
Madsen, A., Hoppner, G., Krause, J., Hirt, M. N., Laufer, S. D., Schweizer, M., et al. (2020). An important role for DNMT3A-mediated DNA methylation in cardiomyocyte metabolism and contractility. Circulation 142 (16), 1562–1578. doi:10.1161/CIRCULATIONAHA.119.044444
Meder, B., Haas, J., Sedaghat-Hamedani, F., Kayvanpour, E., Frese, K., Lai, A., et al. (2017). Epigenome-Wide association study identifies cardiac gene patterning and a novel class of biomarkers for heart failure. Circulation 136 (16), 1528–1544. doi:10.1161/CIRCULATIONAHA.117.027355
Millan-Zambrano, G., Burton, A., Bannister, A. J., and Schneider, R. (2022). Histone post-translational modifications - cause and consequence of genome function. Nat. Rev. Genet. 23, 563–580. doi:10.1038/s41576-022-00468-7
Miyamoto, S., Kawamura, T., Morimoto, T., Ono, K., Wada, H., Kawase, Y., et al. (2006). Histone acetyltransferase activity of p300 is required for the promotion of left ventricular remodeling after myocardial infarction in adult mice in vivo. Circulation 113 (5), 679–690. doi:10.1161/CIRCULATIONAHA.105.585182
Montgomery, R. L., Potthoff, M. J., Haberland, M., Qi, X., Matsuzaki, S., Humphries, K. M., et al. (2008). Maintenance of cardiac energy metabolism by histone deacetylase 3 in mice. J. Clin. Invest. 118 (11), 3588–3597. doi:10.1172/JCI35847
Nan, X., Ng, H. H., Johnson, C. A., Laherty, C. D., Turner, B. M., Eisenman, R. N., et al. (1998). Transcriptional repression by the methyl-CpG-binding protein MeCP2 involves a histone deacetylase complex. Nature 393 (6683), 386–389. doi:10.1038/30764
Pan, J., McKenzie, Z. M., D'Avino, A. R., Mashtalir, N., Lareau, C. A., St Pierre, R., et al. (2019). The ATPase module of mammalian SWI/SNF family complexes mediates subcomplex identity and catalytic activity-independent genomic targeting. Nat. Genet. 51 (4), 618–626. doi:10.1038/s41588-019-0363-5
Papait, R., Cattaneo, P., Kunderfranco, P., Greco, C., Carullo, P., Guffanti, A., et al. (2013). Genome-wide analysis of histone marks identifying an epigenetic signature of promoters and enhancers underlying cardiac hypertrophy. Proc. Natl. Acad. Sci. U. S. A. 110 (50), 20164–20169. doi:10.1073/pnas.1315155110
Ray, K. K., Nicholls, S. J., Ginsberg, H. D., Johansson, J. O., Kalantar-Zadeh, K., Kulikowski, E., et al. (2019). Effect of selective BET protein inhibitor apabetalone on cardiovascular outcomes in patients with acute coronary syndrome and diabetes: Rationale, design, and baseline characteristics of the BETonMACE trial. Am. Heart J. 217, 72–83. doi:10.1016/j.ahj.2019.08.001
Sales, V. M., Ferguson-Smith, A. C., and Patti, M. E. (2017). Epigenetic mechanisms of transmission of metabolic disease across generations. Cell Metab. 25 (3), 559–571. doi:10.1016/j.cmet.2017.02.016
Spiltoir, J. I., Stratton, M. S., Cavasin, M. A., Demos-Davies, K., Reid, B. G., Qi, J., et al. (2013). BET acetyl-lysine binding proteins control pathological cardiac hypertrophy. J. Mol. Cell. Cardiol. 63, 175–179. doi:10.1016/j.yjmcc.2013.07.017
Stenzig, J., Schneeberger, Y., Loser, A., Peters, B. S., Schaefer, A., Zhao, R. R., et al. (2018). Pharmacological inhibition of DNA methylation attenuates pressure overload-induced cardiac hypertrophy in rats. J. Mol. Cell. Cardiol. 120, 53–63. doi:10.1016/j.yjmcc.2018.05.012
Sunagawa, Y., Funamoto, M., Shimizu, K., Shimizu, S., Sari, N., Katanasaka, Y., et al. (2021). Curcumin, an inhibitor of p300-HAT activity, suppresses the development of hypertension-induced left ventricular hypertrophy with preserved ejection fraction in dahl rats. Nutrients 13 (8), 2608. doi:10.3390/nu13082608
Szulik, M. W., Davis, K., Bakhtina, A., Azarcon, P., Bia, R., Horiuchi, E., et al. (2020). Transcriptional regulation by methyltransferases and their role in the heart: highlighting novel emerging functionality. Am. J. Physiol. Heart Circ. Physiol. 319 (4), H847–H865. doi:10.1152/ajpheart.00382.2020
Takaya, T., Kawamura, T., Morimoto, T., Ono, K., Kita, T., Shimatsu, A., et al. (2008). Identification of p300-targeted acetylated residues in GATA4 during hypertrophic responses in cardiac myocytes. J. Biol. Chem. 283 (15), 9828–9835. doi:10.1074/jbc.M707391200
Tolstorukov, M. Y., Sansam, C. G., Lu, P., Koellhoffer, E. C., Helming, K. C., Alver, B. H., et al. (2013). Swi/Snf chromatin remodeling/tumor suppressor complex establishes nucleosome occupancy at target promoters. Proc. Natl. Acad. Sci. U. S. A. 110 (25), 10165–10170. doi:10.1073/pnas.1302209110
Valencia, A. M., Collings, C. K., Dao, H. T., St Pierre, R., Cheng, Y. C., Huang, J., et al. (2019). Recurrent SMARCB1 mutations reveal a nucleosome acidic patch interaction site that potentiates mSWI/SNF complex chromatin remodeling. Cell 179 (6), 1342–1356. doi:10.1016/j.cell.2019.10.044
Van Tongelen, A., Loriot, A., and De Smet, C. (2017). Oncogenic roles of DNA hypomethylation through the activation of cancer-germline genes. Cancer Lett. 396, 130–137. doi:10.1016/j.canlet.2017.03.029
Wallner, M., Eaton, D. M., Berretta, R. M., Liesinger, L., Schittmayer, M., Gindlhuber, J., et al. (2020). HDAC inhibition improves cardiopulmonary function in a feline model of diastolic dysfunction. Sci. Transl. Med. 12 (525), eaay7205. doi:10.1126/scitranslmed.aay7205
Wang, Z., Zhang, X. J., Ji, Y. X., Zhang, P., Deng, K. Q., Gong, J., et al. (2016). The long noncoding RNA Chaer defines an epigenetic checkpoint in cardiac hypertrophy. Nat. Med. 22 (10), 1131–1139. doi:10.1038/nm.4179
Williams, S. M., Golden-Mason, L., Ferguson, B. S., Schuetze, K. B., Cavasin, M. A., Demos-Davies, K., et al. (2014). Class I HDACs regulate angiotensin II-dependent cardiac fibrosis via fibroblasts and circulating fibrocytes. J. Mol. Cell. Cardiol. 67, 112–125. doi:10.1016/j.yjmcc.2013.12.013
Yanazume, T., Hasegawa, K., Morimoto, T., Kawamura, T., Wada, H., Matsumori, A., et al. (2003). Cardiac p300 is involved in myocyte growth with decompensated heart failure. Mol. Cell. Biol. 23 (10), 3593–3606. doi:10.1128/MCB.23.10.3593-3606.2003
Zhang, Q. J., Tran, T. A. T., Wang, M., Ranek, M. J., Kokkonen-Simon, K. M., Gao, J., et al. (2018). Histone lysine dimethyl-demethylase KDM3A controls pathological cardiac hypertrophy and fibrosis. Nat. Commun. 9 (1), 5230. doi:10.1038/s41467-018-07173-2
Zhao, D., Zhong, G., Li, J., Pan, J., Zhao, Y., Song, H., et al. (2021). Targeting E3 ubiquitin ligase WWP1 prevents cardiac hypertrophy through destabilizing DVL2 via inhibition of K27-linked ubiquitination. Circulation 144 (9), 694–711. doi:10.1161/CIRCULATIONAHA.121.054827
Zhao, L., Chen, C. N., Hajji, N., Oliver, E., Cotroneo, E., Wharton, J., et al. (2012). Histone deacetylation inhibition in pulmonary hypertension: therapeutic potential of valproic acid and suberoylanilide hydroxamic acid. Circulation 126 (4), 455–467. doi:10.1161/CIRCULATIONAHA.112.103176
Zhao, Y., and Garcia, B. A. (2015). Comprehensive catalog of currently documented histone modifications. Cold Spring Harb. Perspect. Biol. 7 (9), a025064. doi:10.1101/cshperspect.a025064
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spelling Lizcano, Fernando86bcaed1-a8bc-45b8-bcb2-25d353f3d1ac-1Bustamante Gómez, Lizeth VivianaEspecialista en EndocrinologíaMaestríaFull timebcb31556-82de-46be-9ff9-0aa169b50645-12024-08-22T19:31:32Z2024-08-22T19:31:32Z2023-01-18Los cambios epigenéticos inducidos por factores ambientales son cada vez más relevantes en las enfermedades cardiovasculares. El componente molecular más frecuente en la hipertrofia cardíaca es la reactivación de genes fetales causada por diversas patologías, entre ellas obesidad, hipertensión arterial, estenosis de la válvula aórtica y causas congénitas. A pesar de las múltiples investigaciones realizadas para lograr información sobre los componentes moleculares de esta patología, su influencia en las estrategias terapéuticas es relativamente escasa. Recientemente se ha obtenido nueva información sobre las proteínas que modifican la expresión de genes fetales reactivados en la hipertrofia cardíaca. Estas proteínas modifican el ADN de forma covalente e inducen cambios en la estructura de la cromatina. La relación entre histonas y ADN tiene un reconocido control en la expresión de genes condicionado por el ambiente e induce variaciones epigenéticas. Las modificaciones epigenéticas que regulan la hipertrofia cardíaca patológica se realizan mediante cambios en la estabilidad genómica, la arquitectura de la cromatina y la expresión genética. La trimetilación de la histona 3 en la lisina 4, 9 o 27 (H3-K4; -K9; -K27me3) y la desmetilación de la histona en la lisina 9 y 79 (H3-K9; -K79) son mediadores de la reprogramación en la hipertrofia patológica. Dentro de los modificadores de la arquitectura de la cromatina, las histonas desmetilasas son un grupo de proteínas que se ha demostrado que desempeñan un papel esencial en la diferenciación de las células cardíacas y también pueden ser componentes en el desarrollo de la hipertrofia cardíaca. En el presente trabajo se revisa el conocimiento actual sobre la influencia de las modificaciones epigenéticas en la expresión de genes implicados en la hipertrofia cardíaca y su posible abordaje terapéutico.Epigenetic changes induced by environmental factors are increasingly relevant in cardiovascular diseases. The most frequent molecular component in cardiac hypertrophy is the reactivation of fetal genes caused by various pathologies, including obesity, arterial hypertension, aortic valve stenosis, and congenital causes. Despite the multiple investigations performed to achieve information about the molecular components of this pathology, its influence on therapeutic strategies is relatively scarce. Recently, new information has been taken about the proteins that modify the expression of fetal genes reactivated in cardiac hypertrophy. These proteins modify the DNA covalently and induce changes in the structure of chromatin. The relationship between histones and DNA has a recognized control in the expression of genes conditioned by the environment and induces epigenetic variations. The epigenetic modifications that regulate pathological cardiac hypertrophy are performed through changes in genomic stability, chromatin architecture, and gene expression. Histone 3 trimethylation at lysine 4, 9, or 27 (H3-K4; -K9; -K27me3) and histone demethylation at lysine 9 and 79 (H3-K9; -K79) are mediators of reprogramming in pathologic hypertrophy. Within the chromatin architecture modifiers, histone demethylases are a group of proteins that have been shown to play an essential role in cardiac cell differentiation and may also be components in the development of cardiac hypertrophy. In the present work, we review the current knowledge about the influence of epigenetic modifications in the expression of genes involved in cardiac hypertrophy and its possible therapeutic approach.11 ppapplication/pdfhttps://doi.org/10.3389/fcell.2022.1070338https://repository.urosario.edu.co/handle/10336/43309engUniversidad del RosarioEscuela de Medicina y Ciencias de la SaludEspecialización en Endocrinologíahttps://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2022.1070338/fullAttribution-NonCommercial-NoDerivatives 4.0 InternationalBloqueado (Texto referencial)EL AUTOR, manifiesta que la obra objeto de la presente autorización es original y la realizó sin violar o usurpar derechos de autor de terceros, por lo tanto la obra es de exclusiva autoría y tiene la titularidad sobre la misma. 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Para el correcto ejercicio de mi derecho de habeas data cuento con la cuenta de correo habeasdata@urosario.edu.co, donde previa identificación podré solicitar la consulta, corrección y supresión de mis datos.http://creativecommons.org/licenses/by-nc-nd/4.0/http://purl.org/coar/access_right/c_14cbBagchi, R. A., and Weeks, K. L. (2019). Histone deacetylases in cardiovascular and metabolic diseases. J. Mol. Cell. Cardiol. 130, 151–159. doi:10.1016/j.yjmcc.2019.04.003Beacon, T. H., Xu, W., and Davie, J. R. (2020). Genomic landscape of transcriptionally active histone arginine methylation marks, H3R2me2s and H4R3me2a, relative to nucleosome depleted regions. Gene 742, 144593. doi:10.1016/j.gene.2020.144593Bhutani, N., Burns, D. M., and Blau, H. M. (2011). DNA demethylation dynamics. Cell 146 (6), 866–872. doi:10.1016/j.cell.2011.08.042Boeger, H., Griesenbeck, J., and Kornberg, R. D. (2008). Nucleosome retention and the stochastic nature of promoter chromatin remodeling for transcription. Cell 133 (4), 716–726. doi:10.1016/j.cell.2008.02.051Borck, P. C., Guo, L. W., and Plutzky, J. (2020). BET epigenetic reader proteins in cardiovascular transcriptional programs. Circ. Res. 126 (9), 1190–1208. doi:10.1161/CIRCRESAHA.120.315929Bradner, J. E., West, N., Grachan, M. L., Greenberg, E. F., Haggarty, S. J., Warnow, T., et al. (2010). Chemical phylogenetics of histone deacetylases. Nat. Chem. Biol. 6 (3), 238–243. doi:10.1038/nchembio.313Bush, E. W., and McKinsey, T. A. (2009). Targeting histone deacetylases for heart failure. Expert Opin. Ther. Targets 13 (7), 767–784. doi:10.1517/14728220902939161Care, A., Catalucci, D., Felicetti, F., Bonci, D., Addario, A., Gallo, P., et al. (2007). MicroRNA-133 controls cardiac hypertrophy. Nat. Med. 13 (5), 613–618. doi:10.1038/nm1582Cech, T. R. (2012). The RNA worlds in context. Cold Spring Harb. Perspect. Biol. 4 (7), a006742. doi:10.1101/cshperspect.a006742Clapier, C. R., Iwasa, J., Cairns, B. R., and Peterson, C. L. (2017). Mechanisms of action and regulation of ATP-dependent chromatin-remodelling complexes. Nat. Rev. Mol. Cell Biol. 18 (7), 407–422. doi:10.1038/nrm.2017.26Coulter, J. B., O'Driscoll, C. M., and Bressler, J. P. (2013). Hydroquinone increases 5-hydroxymethylcytosine formation through ten eleven translocation 1 (TET1) 5-methylcytosine dioxygenase. J. Biol. Chem. 288 (40), 28792–28800. doi:10.1074/jbc.M113.491365Domcke, S., Bardet, A. F., Adrian Ginno, P., Hartl, D., Burger, L., and Schubeler, D. (2015). Competition between DNA methylation and transcription factors determines binding of NRF1. Nature 528 (7583), 575–579. doi:10.1038/nature16462Eom, G. H., Nam, Y. S., Oh, J. G., Choe, N., Min, H. K., Yoo, E. K., et al. (2014). Regulation of acetylation of histone deacetylase 2 by p300/CBP-associated factor/histone deacetylase 5 in the development of cardiac hypertrophy. Circ. Res. 114 (7), 1133–1143. doi:10.1161/CIRCRESAHA.114.303429Fernandez-Ruiz, I. (2020). H19 in cardiac hypertrophy. Nat. Rev. Cardiol. 17 (10), 612. doi:10.1038/s41569-020-0434-4Glezeva, N., Moran, B., Collier, P., Moravec, C. S., Phelan, D., Donnellan, E., et al. (2019). Targeted DNA methylation profiling of human cardiac tissue reveals novel epigenetic traits and gene deregulation across different heart failure patient subtypes. Circ. Heart Fail. 12 (3), e005765. doi:10.1161/CIRCHEARTFAILURE.118.005765Gorica, E., Mohammed, S. A., Ambrosini, S., Calderone, V., Costantino, S., and Paneni, F. (2022). Epi-drugs in heart failure. Front. Cardiovasc. Med. 9, 923014. doi:10.3389/fcvm.2022.923014Gresh, L., Bourachot, B., Reimann, A., Guigas, B., Fiette, L., Garbay, S., et al. (2005). The SWI/SNF chromatin-remodeling complex subunit SNF5 is essential for hepatocyte differentiation. EMBO J. 24 (18), 3313–3324. doi:10.1038/sj.emboj.7600802Guo, X., Zhang, B. F., Zhang, J., Liu, G., Hu, Q., and Chen, J. (2022). The histone demthylase KDM3A protects the myocardium from ischemia/reperfusion injury via promotion of ETS1 expression. Commun. Biol. 5 (1), 270. doi:10.1038/s42003-022-03225-yHan, P., Li, W., Lin, C. H., Yang, J., Shang, C., Nuernberg, S. T., et al. (2014). A long noncoding RNA protects the heart from pathological hypertrophy. Nature 514 (7520), 102–106. doi:10.1038/nature13596Hohl, M., Ardehali, H., Azuaje, F. J., Breckenridge, R. A., Doehner, W., Eaton, P., et al. (2014). Meeting highlights from the 2013 European society of cardiology heart failure association winter meeting on translational heart failure research. Eur. J. Heart Fail. 16 (1), 6–14. doi:10.1002/ejhf.10Jeong, M. Y., Lin, Y. H., Wennersten, S. A., Demos-Davies, K. M., Cavasin, M. A., Mahaffey, J. H., et al. (2018). Histone deacetylase activity governs diastolic dysfunction through a nongenomic mechanism. Sci. Transl. Med. 10 (427), eaao0144. doi:10.1126/scitranslmed.aao0144Jiang, X. Y., Feng, Y. L., Ye, L. T., Li, X. H., Feng, J., Zhang, M. Z., et al. (2017). Inhibition of Gata4 and tbx5 by nicotine-mediated DNA methylation in myocardial differentiation. Stem Cell Rep. 8 (2), 290–304. doi:10.1016/j.stemcr.2016.12.016Kee, H. J., Bae, E. H., Park, S., Lee, K. E., Suh, S. H., Kim, S. W., et al. (2013). HDAC inhibition suppresses cardiac hypertrophy and fibrosis in DOCA-salt hypertensive rats via regulation of HDAC6/HDAC8 enzyme activity. Kidney Blood Press. Res. 37 (4-5), 229–239. doi:10.1159/000350148Kumarswamy, R., Bauters, C., Volkmann, I., Maury, F., Fetisch, J., Holzmann, A., et al. (2014). Circulating long noncoding RNA, LIPCAR, predicts survival in patients with heart failure. Circ. Res. 114 (10), 1569–1575. doi:10.1161/CIRCRESAHA.114.303915Li, H., Fan, J., Yin, Z., Wang, F., Chen, C., and Wang, D. W. (2016). Identification of cardiac-related circulating microRNA profile in human chronic heart failure. Oncotarget 7 (1), 33–45. doi:10.18632/oncotarget.6631Liu, L., An, X., Li, Z., Song, Y., Li, L., Zuo, S., et al. (2016). The H19 long noncoding RNA is a novel negative regulator of cardiomyocyte hypertrophy. Cardiovasc. Res. 111 (1), 56–65. doi:10.1093/cvr/cvw078Lizcano, F., and Garcia, J. (2012). Epigenetic control and cancer: the potential of histone demethylases as therapeutic targets. Pharm. (Basel) 5 (9), 963–990. doi:10.3390/ph5090963Madsen, A., Hoppner, G., Krause, J., Hirt, M. N., Laufer, S. D., Schweizer, M., et al. (2020). An important role for DNMT3A-mediated DNA methylation in cardiomyocyte metabolism and contractility. Circulation 142 (16), 1562–1578. doi:10.1161/CIRCULATIONAHA.119.044444Meder, B., Haas, J., Sedaghat-Hamedani, F., Kayvanpour, E., Frese, K., Lai, A., et al. (2017). Epigenome-Wide association study identifies cardiac gene patterning and a novel class of biomarkers for heart failure. Circulation 136 (16), 1528–1544. doi:10.1161/CIRCULATIONAHA.117.027355Millan-Zambrano, G., Burton, A., Bannister, A. J., and Schneider, R. (2022). Histone post-translational modifications - cause and consequence of genome function. Nat. Rev. Genet. 23, 563–580. doi:10.1038/s41576-022-00468-7Miyamoto, S., Kawamura, T., Morimoto, T., Ono, K., Wada, H., Kawase, Y., et al. (2006). Histone acetyltransferase activity of p300 is required for the promotion of left ventricular remodeling after myocardial infarction in adult mice in vivo. Circulation 113 (5), 679–690. doi:10.1161/CIRCULATIONAHA.105.585182Montgomery, R. L., Potthoff, M. J., Haberland, M., Qi, X., Matsuzaki, S., Humphries, K. M., et al. (2008). Maintenance of cardiac energy metabolism by histone deacetylase 3 in mice. J. Clin. Invest. 118 (11), 3588–3597. doi:10.1172/JCI35847Nan, X., Ng, H. H., Johnson, C. A., Laherty, C. D., Turner, B. M., Eisenman, R. N., et al. (1998). Transcriptional repression by the methyl-CpG-binding protein MeCP2 involves a histone deacetylase complex. Nature 393 (6683), 386–389. doi:10.1038/30764Pan, J., McKenzie, Z. M., D'Avino, A. R., Mashtalir, N., Lareau, C. A., St Pierre, R., et al. (2019). The ATPase module of mammalian SWI/SNF family complexes mediates subcomplex identity and catalytic activity-independent genomic targeting. Nat. Genet. 51 (4), 618–626. doi:10.1038/s41588-019-0363-5Papait, R., Cattaneo, P., Kunderfranco, P., Greco, C., Carullo, P., Guffanti, A., et al. (2013). Genome-wide analysis of histone marks identifying an epigenetic signature of promoters and enhancers underlying cardiac hypertrophy. Proc. Natl. Acad. Sci. U. S. A. 110 (50), 20164–20169. doi:10.1073/pnas.1315155110Ray, K. K., Nicholls, S. J., Ginsberg, H. D., Johansson, J. O., Kalantar-Zadeh, K., Kulikowski, E., et al. (2019). Effect of selective BET protein inhibitor apabetalone on cardiovascular outcomes in patients with acute coronary syndrome and diabetes: Rationale, design, and baseline characteristics of the BETonMACE trial. Am. Heart J. 217, 72–83. doi:10.1016/j.ahj.2019.08.001Sales, V. M., Ferguson-Smith, A. C., and Patti, M. E. (2017). Epigenetic mechanisms of transmission of metabolic disease across generations. Cell Metab. 25 (3), 559–571. doi:10.1016/j.cmet.2017.02.016Spiltoir, J. I., Stratton, M. S., Cavasin, M. A., Demos-Davies, K., Reid, B. G., Qi, J., et al. (2013). BET acetyl-lysine binding proteins control pathological cardiac hypertrophy. J. Mol. Cell. Cardiol. 63, 175–179. doi:10.1016/j.yjmcc.2013.07.017Stenzig, J., Schneeberger, Y., Loser, A., Peters, B. S., Schaefer, A., Zhao, R. R., et al. (2018). Pharmacological inhibition of DNA methylation attenuates pressure overload-induced cardiac hypertrophy in rats. J. Mol. Cell. Cardiol. 120, 53–63. doi:10.1016/j.yjmcc.2018.05.012Sunagawa, Y., Funamoto, M., Shimizu, K., Shimizu, S., Sari, N., Katanasaka, Y., et al. (2021). Curcumin, an inhibitor of p300-HAT activity, suppresses the development of hypertension-induced left ventricular hypertrophy with preserved ejection fraction in dahl rats. Nutrients 13 (8), 2608. doi:10.3390/nu13082608Szulik, M. W., Davis, K., Bakhtina, A., Azarcon, P., Bia, R., Horiuchi, E., et al. (2020). Transcriptional regulation by methyltransferases and their role in the heart: highlighting novel emerging functionality. Am. J. Physiol. Heart Circ. Physiol. 319 (4), H847–H865. doi:10.1152/ajpheart.00382.2020Takaya, T., Kawamura, T., Morimoto, T., Ono, K., Kita, T., Shimatsu, A., et al. (2008). Identification of p300-targeted acetylated residues in GATA4 during hypertrophic responses in cardiac myocytes. J. Biol. Chem. 283 (15), 9828–9835. doi:10.1074/jbc.M707391200Tolstorukov, M. Y., Sansam, C. G., Lu, P., Koellhoffer, E. C., Helming, K. C., Alver, B. H., et al. (2013). Swi/Snf chromatin remodeling/tumor suppressor complex establishes nucleosome occupancy at target promoters. Proc. Natl. Acad. Sci. U. S. A. 110 (25), 10165–10170. doi:10.1073/pnas.1302209110Valencia, A. M., Collings, C. K., Dao, H. T., St Pierre, R., Cheng, Y. C., Huang, J., et al. (2019). Recurrent SMARCB1 mutations reveal a nucleosome acidic patch interaction site that potentiates mSWI/SNF complex chromatin remodeling. Cell 179 (6), 1342–1356. doi:10.1016/j.cell.2019.10.044Van Tongelen, A., Loriot, A., and De Smet, C. (2017). Oncogenic roles of DNA hypomethylation through the activation of cancer-germline genes. Cancer Lett. 396, 130–137. doi:10.1016/j.canlet.2017.03.029Wallner, M., Eaton, D. M., Berretta, R. M., Liesinger, L., Schittmayer, M., Gindlhuber, J., et al. (2020). HDAC inhibition improves cardiopulmonary function in a feline model of diastolic dysfunction. Sci. Transl. Med. 12 (525), eaay7205. doi:10.1126/scitranslmed.aay7205Wang, Z., Zhang, X. J., Ji, Y. X., Zhang, P., Deng, K. Q., Gong, J., et al. (2016). The long noncoding RNA Chaer defines an epigenetic checkpoint in cardiac hypertrophy. Nat. Med. 22 (10), 1131–1139. doi:10.1038/nm.4179Williams, S. M., Golden-Mason, L., Ferguson, B. S., Schuetze, K. B., Cavasin, M. A., Demos-Davies, K., et al. (2014). Class I HDACs regulate angiotensin II-dependent cardiac fibrosis via fibroblasts and circulating fibrocytes. J. Mol. Cell. Cardiol. 67, 112–125. doi:10.1016/j.yjmcc.2013.12.013Yanazume, T., Hasegawa, K., Morimoto, T., Kawamura, T., Wada, H., Matsumori, A., et al. (2003). Cardiac p300 is involved in myocyte growth with decompensated heart failure. Mol. Cell. Biol. 23 (10), 3593–3606. doi:10.1128/MCB.23.10.3593-3606.2003Zhang, Q. J., Tran, T. A. T., Wang, M., Ranek, M. J., Kokkonen-Simon, K. M., Gao, J., et al. (2018). Histone lysine dimethyl-demethylase KDM3A controls pathological cardiac hypertrophy and fibrosis. Nat. Commun. 9 (1), 5230. doi:10.1038/s41467-018-07173-2Zhao, D., Zhong, G., Li, J., Pan, J., Zhao, Y., Song, H., et al. (2021). Targeting E3 ubiquitin ligase WWP1 prevents cardiac hypertrophy through destabilizing DVL2 via inhibition of K27-linked ubiquitination. Circulation 144 (9), 694–711. doi:10.1161/CIRCULATIONAHA.121.054827Zhao, L., Chen, C. N., Hajji, N., Oliver, E., Cotroneo, E., Wharton, J., et al. (2012). Histone deacetylation inhibition in pulmonary hypertension: therapeutic potential of valproic acid and suberoylanilide hydroxamic acid. Circulation 126 (4), 455–467. doi:10.1161/CIRCULATIONAHA.112.103176Zhao, Y., and Garcia, B. A. (2015). Comprehensive catalog of currently documented histone modifications. Cold Spring Harb. Perspect. Biol. 7 (9), a025064. doi:10.1101/cshperspect.a025064instname:Universidad del Rosarioreponame:Repositorio Institucional EdocUREpigeneticaEnfermedad cardiaca hipertroficaModificaciones de la cromatinaEpigeneticHypertrophic heart diseaseChromatin modificationMolecular perspectives in hypertrophic heart disease: An epigenetic approach from chromatin modificationPerspectivas Moleculares en la enfermedad Cardiaca hipertrofica: un abordajes epigenetico desde las modificaciones de la cromatinabachelorThesisArtículoArtículohttp://purl.org/coar/resource_type/c_7a1fEscuela de Medicina y Ciencias de la SaludBogotáORIGINALMolecular_perspectives_in_hypertrophic_heart_disease.pdfMolecular_perspectives_in_hypertrophic_heart_disease.pdfapplication/pdf5273090https://repository.urosario.edu.co/bitstreams/6536443f-3d8c-4678-ba83-7ab91458e806/downloada8d83012962876bd52a17a512306773cMD51LICENSElicense.txtlicense.txttext/plain1483https://repository.urosario.edu.co/bitstreams/9a723743-349f-4d83-b3da-631c9fa4f797/downloadb2825df9f458e9d5d96ee8b7cd74fde6MD52CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8899https://repository.urosario.edu.co/bitstreams/82cc8b73-9b0d-4c95-8fb7-f7c453284b83/download3b6ce8e9e36c89875e8cf39962fe8920MD53TEXTMolecular_perspectives_in_hypertrophic_heart_disease.pdf.txtMolecular_perspectives_in_hypertrophic_heart_disease.pdf.txtExtracted texttext/plain22https://repository.urosario.edu.co/bitstreams/53fd5b04-5816-49a1-a0c8-f8d5c3d3b25f/download6cccda74febad7705949cb89ee2669ddMD54THUMBNAILMolecular_perspectives_in_hypertrophic_heart_disease.pdf.jpgMolecular_perspectives_in_hypertrophic_heart_disease.pdf.jpgGenerated Thumbnailimage/jpeg3446https://repository.urosario.edu.co/bitstreams/7c95304e-093c-4bfb-af8c-6123a6fa160a/download5e7fcec9603e8f0ba812244b0ed30ae7MD5510336/43309oai:repository.urosario.edu.co:10336/433092024-08-23 03:01:37.163http://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.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