PMID- 23905631 OWN - NLM STAT- MEDLINE DCOM- 20140702 LR - 20211021 IS - 1530-0277 (Electronic) IS - 0145-6008 (Print) IS - 0145-6008 (Linking) VI - 37 IP - 11 DP - 2013 Nov TI - Binge ethanol-induced HDAC3 down-regulates Cpt1alpha expression leading to hepatic steatosis and injury. PG - 1920-9 LID - 10.1111/acer.12172 [doi] AB - BACKGROUND: Recently, we have demonstrated that acute alcohol exposure due to binge drinking leads to hepatic steatosis with the deregulation of hepatic histone deacetylase (HDAC) expression. Various class I, II, and IV HDACs were down-regulated, whereas expression of HDAC3 was solely up-regulated. Hence, in the present work, we specifically examined the mechanistic role of HDAC3 in the development of hepatic steatosis occurring in response to binge alcohol administration. METHODS: C57BL/6 mice were gavaged 3 times with ethanol (EtOH) at a dose of 4.5 g/kg. HDAC inhibitor, Trichostatin A (TSA) was simultaneously injected intraperitoneally at a dose of 1 mg/kg. Hepatic steatosis, injury, expression of HDAC3 and carnitine palmitoyltransferase 1alpha (CPT1alpha) were evaluated. HDAC3 and histone H3 acetylation levels at the Cpt1alpha promoter were analyzed by chromatin immunoprecipitation (ChIP). RESULTS: The binge EtOH-mediated increase in HDAC3 was prevented by simultaneous administration of HDAC inhibitor, TSA, which markedly attenuated hepatic steatosis and injury. Importantly, HDAC3 inhibition was able to normalize the down-regulation of Cpt1alpha expression. Causal role of HDAC3 in the transcriptional repression of Cpt1alpha was demonstrated by increased HDAC3 binding at the thyroid receptor element site in the Cpt1alpha distal promoter region. Further, a resultant decrease in the transcriptionally permissive histone H3 lysine 9 acetylation in the proximal promoter region near the transcriptional start site was observed. Notably, TSA treatment reduced HDAC3 binding and increased H3K9 acetylation at Cpt1alpha promoter leading to increased Cpt1alpha expression. These molecular events resulted in attenuation of binge alcohol-induced hepatic steatosis. CONCLUSIONS: These findings provide insights into potential epigenetic mechanisms underlying transcriptional regulation of Cpt1alpha in the hepatic steatosis occurring in response to binge EtOH administration. CI - Copyright (c) 2013 by the Research Society on Alcoholism. FAU - Kirpich, Irina AU - Kirpich I AD - Division of Gastroenterology, Hepatology, and Nutrition , Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky; University of Louisville Alcohol Research Center , Louisville, Kentucky. FAU - Zhang, Jingwen AU - Zhang J FAU - Gobejishvili, Leila AU - Gobejishvili L FAU - Kharebava, Giorgi AU - Kharebava G FAU - Barker, David AU - Barker D FAU - Ghare, Smita AU - Ghare S FAU - Joshi-Barve, Swati AU - Joshi-Barve S FAU - McClain, Craig J AU - McClain CJ FAU - Barve, Shirish AU - Barve S LA - eng GR - U01 AA021901/AA/NIAAA NIH HHS/United States GR - K01 ES017105/ES/NIEHS NIH HHS/United States GR - R21 AA020849-01A1/AA/NIAAA NIH HHS/United States GR - P01 AA017103/AA/NIAAA NIH HHS/United States GR - R01 AA018869/AA/NIAAA NIH HHS/United States GR - RC2AA019385/AA/NIAAA NIH HHS/United States GR - T32 ES011564/ES/NIEHS NIH HHS/United States GR - P30 AA019360/AA/NIAAA NIH HHS/United States GR - R01 AA015970/AA/NIAAA NIH HHS/United States GR - R01 AAO14371/PHS HHS/United States GR - R01 AA014371/AA/NIAAA NIH HHS/United States GR - R01 AA0015970/AA/NIAAA NIH HHS/United States GR - R37 AA010762/AA/NIAAA NIH HHS/United States GR - R01 AA018016/AA/NIAAA NIH HHS/United States GR - R21 AA020849/AA/NIAAA NIH HHS/United States GR - R01 DK071765/DK/NIDDK NIH HHS/United States GR - RC2 AA019385/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20130726 PL - England TA - Alcohol Clin Exp Res JT - Alcoholism, clinical and experimental research JID - 7707242 RN - 0 (Central Nervous System Depressants) RN - 3K9958V90M (Ethanol) RN - EC 2.3.1.21 (Carnitine O-Palmitoyltransferase) RN - EC 3.5.1.98 (Histone Deacetylases) RN - EC 3.5.1.98 (histone deacetylase 3) SB - IM MH - Animals MH - Binge Drinking/genetics/*metabolism MH - Carnitine O-Palmitoyltransferase/*antagonists & inhibitors/genetics/*metabolism MH - Central Nervous System Depressants/adverse effects MH - Chemical and Drug Induced Liver Injury/*etiology/metabolism MH - Down-Regulation/genetics MH - Ethanol/adverse effects MH - Fatty Liver/*etiology/metabolism MH - Gene Expression Regulation, Enzymologic MH - Histone Deacetylases/genetics/*metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL PMC - PMC3975907 MID - NIHMS548010 OTO - NOTNLM OT - Binge Alcohol Exposure OT - CPT1alpha OT - HDAC3 OT - Liver Steatosis EDAT- 2013/08/03 06:00 MHDA- 2014/07/06 06:00 PMCR- 2014/04/04 CRDT- 2013/08/03 06:00 PHST- 2012/06/26 00:00 [received] PHST- 2013/04/01 00:00 [accepted] PHST- 2013/08/03 06:00 [entrez] PHST- 2013/08/03 06:00 [pubmed] PHST- 2014/07/06 06:00 [medline] PHST- 2014/04/04 00:00 [pmc-release] AID - 10.1111/acer.12172 [doi] PST - ppublish SO - Alcohol Clin Exp Res. 2013 Nov;37(11):1920-9. doi: 10.1111/acer.12172. Epub 2013 Jul 26.