PMID- 36745702 OWN - NLM STAT- MEDLINE DCOM- 20230330 LR - 20230516 IS - 1097-4652 (Electronic) IS - 0021-9541 (Print) IS - 0021-9541 (Linking) VI - 238 IP - 3 DP - 2023 Mar TI - Deacetylase-dependent and -independent role of HDAC3 in cardiomyopathy. PG - 647-658 LID - 10.1002/jcp.30957 [doi] AB - Cardiomyopathy is a common disease of cardiac muscle that negatively affects cardiac function. HDAC3 commonly functions as corepressor by removing acetyl moieties from histone tails. However, a deacetylase-independent role of HDAC3 has also been described. Cardiac deletion of HDAC3 causes reduced cardiac contractility accompanied by lipid accumulation, but the molecular function of HDAC3 in cardiomyopathy remains unknown. We have used powerful genetic tools in Drosophila to investigate the enzymatic and nonenzymatic roles of HDAC3 in cardiomyopathy. Using the Drosophila heart model, we showed that cardiac-specific HDAC3 knockdown (KD) leads to prolonged systoles and reduced cardiac contractility. Immunohistochemistry revealed structural abnormalities characterized by myofiber disruption in HDAC3 KD hearts. Cardiac-specific HDAC3 KD showed increased levels of whole-body triglycerides and increased fibrosis. The introduction of deacetylase-dead HDAC3 mutant in HDAC3 KD background showed comparable results with wild-type HDAC3 in aspects of contractility and Pericardin deposition. However, deacetylase-dead HDAC3 mutants failed to improve triglyceride accumulation. Our data indicate that HDAC3 plays a deacetylase-independent role in maintaining cardiac contractility and preventing Pericardin deposition as well as a deacetylase-dependent role to maintain triglyceride homeostasis. CI - (c) 2023 Wiley Periodicals LLC. FAU - Ren, Jieyu AU - Ren J AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Zeng, Qun AU - Zeng Q AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Wu, Hongmei AU - Wu H AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Liu, Xuewen AU - Liu X AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Guida, Maria C AU - Guida MC AD - Development Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA. FAU - Huang, Wen AU - Huang W AD - Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. FAU - Zhai, Yiyuan AU - Zhai Y AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Li, Junjie AU - Li J AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. FAU - Ocorr, Karen AU - Ocorr K AD - Development Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA. FAU - Bodmer, Rolf AU - Bodmer R AD - Development Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA. FAU - Tang, Min AU - Tang M AD - Department of Biochemistry and Molecular Biology, College of Hengyang Medical, University of South China, Hengyang, China. LA - eng GR - R01 HL054732/HL/NHLBI NIH HHS/United States GR - R21 AG075446/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230206 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (Drosophila Proteins) RN - EC 3.5.1.98 (Hdac3 protein, Drosophila) RN - EC 3.5.1.98 (Histone Deacetylases) RN - 0 (Histones) RN - 0 (Prc protein, Drosophila) RN - 0 (Triglycerides) SB - IM MH - Animals MH - *Cardiomyopathies/enzymology/genetics/metabolism/physiopathology MH - *Disease Models, Animal MH - *Drosophila melanogaster/enzymology/genetics/metabolism MH - *Drosophila Proteins/deficiency/genetics/metabolism MH - Gene Knockdown Techniques MH - Heart/physiology MH - *Histone Deacetylases/deficiency/genetics/metabolism MH - Histones/chemistry/metabolism MH - Myocardium/metabolism MH - Triglycerides/metabolism MH - Homeostasis PMC - PMC10152801 MID - NIHMS1882545 OTO - NOTNLM OT - Drosophila OT - Pericardin OT - cardiac contractility OT - cardiomyopathy OT - deacetylase OT - fibrosis OT - triglycerides EDAT- 2023/02/07 06:00 MHDA- 2023/03/22 06:00 PMCR- 2023/05/02 CRDT- 2023/02/06 14:07 PHST- 2022/12/14 00:00 [revised] PHST- 2022/07/31 00:00 [received] PHST- 2023/01/11 00:00 [accepted] PHST- 2023/02/07 06:00 [pubmed] PHST- 2023/03/22 06:00 [medline] PHST- 2023/02/06 14:07 [entrez] PHST- 2023/05/02 00:00 [pmc-release] AID - 10.1002/jcp.30957 [doi] PST - ppublish SO - J Cell Physiol. 2023 Mar;238(3):647-658. doi: 10.1002/jcp.30957. Epub 2023 Feb 6.