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  • Title: Protective effect of histone methyltransferase NSD3 on ISO-induced cardiac hypertrophy.
    Author: Chen K, Jian D, Zhao L, Zang X, Song W, Ma J, Jia Z, Wang X, Gao C.
    Journal: FEBS Lett; 2019 Sep; 593(18):2556-2565. PubMed ID: 31254363.
    Abstract:
    Nuclear receptor-binding SET domain 3 (NSD3) is a lysine methyltransferase that plays important roles in multiple biological activities; however; its potential roles in the cardiovascular system remain unknown. In this study, we found that NSD3 expression is reduced by isoproterenol (ISO) stimuli both in vitro and in vivo. Overexpression of NSD3 attenuates ISO-induced cardiomyocyte hypertrophy. Mechanistically, ISO treatment decreases H3K27me2/3 modifications on the atrial natriuretic factor (ANF) promoter by suppressing NSD3 and inhibits the association between NSD3 and bromodomain-containing protein 4 (BRD4), thus suppressing the BRD4-mediated H3K27ac modifications, which ultimately promote ANF transcription and cardiomyocyte hypertrophy. In conclusion, NSD3 decreases ANF expression and, thereby, attenuates ISO-induced cardiomyocyte hypertrophy.
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