{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T08:45:55Z","timestamp":1780735555916,"version":"3.54.1"},"reference-count":33,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,5,13]],"date-time":"2020-05-13T00:00:00Z","timestamp":1589328000000},"content-version":"vor","delay-in-days":133,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Health Department of Heilongjiang Province","award":["2019-314"],"award-info":[{"award-number":["2019-314"]}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:p>The histone demethylase JMJD family is involved in various physiological and pathological functions. However, the roles of JMJD1A in the cardiovascular system remain unknown. Here, we studied the function of JMJD1A in cardiac hypertrophy. The mRNA and protein levels of <jats:italic>JMJD1A<\/jats:italic> were significantly downregulated in the hearts of human patients with hypertrophic cardiomyopathy and the hearts of C57BL\/6 mice underwent cardiac hypertrophy induced by transverse aortic constriction (TAC) surgery or isoproterenol (ISO) infusion. In neonatal rat cardiomyocytes (NRCMs), siRNA\u2010mediated <jats:italic>JMJD1A<\/jats:italic> knockdown facilitated ISO or angiotensin II\u2010induced increase in cardiomyocyte size, protein synthesis, and expression of hypertrophic fetal genes, including <jats:italic>atrial natriuretic peptide<\/jats:italic> (<jats:italic>Anp<\/jats:italic>), <jats:italic>brain natriuretic peptide<\/jats:italic> (<jats:italic>Bnp<\/jats:italic>), and <jats:italic>Myh7<\/jats:italic>. By contrast, overexpression of <jats:italic>JMJD1A<\/jats:italic> with adenovirus repressed the development of ISO\u2010induced cardiomyocyte hypertrophy. We observed that <jats:italic>JMJD1A<\/jats:italic> reduced the production of total cellular and mitochondrial levels of reactive oxygen species (ROS), which was critically involved in the effects of JMJD1A because either N\u2010acetylcysteine or MitoTEMPO treatment blocked the effects of <jats:italic>JMJD1A<\/jats:italic> deficiency on cardiomyocyte hypertrophy. Mechanism study demonstrated that JMJD1A promoted the expression and activity of <jats:italic>Catalase<\/jats:italic> under basal condition or oxidative stress. siRNA\u2010mediated loss of <jats:italic>Catalase<\/jats:italic> blocked the protection of JMJD1A overexpression against ISO\u2010induced cardiomyocyte hypertrophy. These findings demonstrated that JMJD1A loss promoted cardiomyocyte hypertrophy in a Catalase and ROS\u2010dependent manner.<\/jats:p>","DOI":"10.1155\/2020\/5081323","type":"journal-article","created":{"date-parts":[[2020,5,13]],"date-time":"2020-05-13T23:45:55Z","timestamp":1589413555000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["JMJD1A Represses the Development of Cardiomyocyte Hypertrophy by Regulating the Expression of 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