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Epigenetic Histone Modifications Involved in Profibrotic Gene Regulation by 12/15-Lipoxygenase and Its Oxidized Lipid Products in Diabetic Nephropathy

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dc.contributor.author박정탁-
dc.date.accessioned2020-07-27T16:40:35Z-
dc.date.available2020-07-27T16:40:35Z-
dc.date.issued2016-03-
dc.identifier.issn1523-0864-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/178444-
dc.description.abstractAims: Epigenetic mechanisms, including histone post-translational modifications and DNA methylation, are implicated in the pathogenesis of diabetic nephropathy (DN), but the mediators are not well known. Moreover, although dyslipidemia contributes to DN, epigenetic changes triggered by lipids are unclear. In diabetes, increased expression of 12/15-lipoxygenase (12/15-LO) enhances oxidized lipids such as 12(S)-hydroxyeicosatetraenoic acid [12(S)-HETE], which promote oxidant stress, glomerular and mesangial cell (MC) dysfunction, and fibrosis, and mediate the actions of profibrotic growth factors. We hypothesized that 12/15-LO and its oxidized lipid products can regulate epigenetic mechanisms mediating profibrotic gene expression related to DN. Results: 12(S)-HETE increased profibrotic gene expression and enrichment of permissive histone lysine modifications at their promoters in MCs. 12(S)-HETE also increased protein levels of SET7, a histone H3 lysine 4 methyltransferase, and promoted its nuclear translocation and enrichment at profibrotic gene promoters. Furthermore, SET7 (Setd7) gene silencing inhibited 12(S)-HETE-induced profibrotic gene expression. 12/15-LO (Alox15) gene silencing or genetic knockout inhibited transforming growth factor-β1 (TGF-β1)-induced expression of Setd7 and profibrotic genes and histone modifications in MCs. Furthermore, 12/15-LO knockout in mice ameliorated key features of DN and abrogated increases in renal SET7 and profibrotic genes. Additionally, 12/15-LO siRNAs in vivo blocked increases in renal SET7 and profibrotic genes in diabetic mice. Innovation and conclusion: These novel results demonstrate for the first time that 12/15-LO-derived oxidized lipids regulate histone modifications associated with profibrotic gene expression in MCs, and 12/15-LO can mediate similar actions of TGF-β1 and diabetes. Targeting 12/15-LO might be a useful strategy to inhibit key epigenetic mechanisms involved in DN.-
dc.description.statementOfResponsibilityopen-
dc.languageEnglish-
dc.publisherMary Ann Liebert, Inc.-
dc.relation.isPartOfANTIOXIDANTS & REDOX SIGNALING-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.subject.MESHAnimals-
dc.subject.MESHArachidonate 12-Lipoxygenase / genetics-
dc.subject.MESHArachidonate 12-Lipoxygenase / metabolism*-
dc.subject.MESHArachidonate 15-Lipoxygenase / genetics-
dc.subject.MESHArachidonate 15-Lipoxygenase / metabolism*-
dc.subject.MESHChromatin Immunoprecipitation-
dc.subject.MESHDiabetes Mellitus, Experimental-
dc.subject.MESHDiabetic Nephropathies / genetics*-
dc.subject.MESHDiabetic Nephropathies / metabolism*-
dc.subject.MESHDiabetic Nephropathies / pathology-
dc.subject.MESHDiabetic Nephropathies / physiopathology-
dc.subject.MESHDisease Models, Animal-
dc.subject.MESHEpigenesis, Genetic*-
dc.subject.MESHFibrosis / genetics-
dc.subject.MESHGene Expression Regulation* / drug effects-
dc.subject.MESHGene Silencing-
dc.subject.MESHHigh-Throughput Nucleotide Sequencing-
dc.subject.MESHHistone-Lysine N-Methyltransferase / genetics-
dc.subject.MESHHistone-Lysine N-Methyltransferase / metabolism-
dc.subject.MESHHistones / genetics*-
dc.subject.MESHHistones / metabolism-
dc.subject.MESHHydroxyeicosatetraenoic Acids / metabolism-
dc.subject.MESHHydroxyeicosatetraenoic Acids / pharmacology-
dc.subject.MESHLipid Metabolism*-
dc.subject.MESHMesangial Cells / drug effects-
dc.subject.MESHMesangial Cells / metabolism-
dc.subject.MESHMice-
dc.subject.MESHMice, Knockout-
dc.subject.MESHOxidation-Reduction-
dc.subject.MESHPromoter Regions, Genetic-
dc.subject.MESHRats-
dc.subject.MESHTransforming Growth Factor beta / metabolism-
dc.subject.MESHTransforming Growth Factor beta / pharmacology-
dc.titleEpigenetic Histone Modifications Involved in Profibrotic Gene Regulation by 12/15-Lipoxygenase and Its Oxidized Lipid Products in Diabetic Nephropathy-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Internal Medicine (내과학교실)-
dc.contributor.googleauthorHang Yuan-
dc.contributor.googleauthorMarpadga A Reddy-
dc.contributor.googleauthorSupriya Deshpande-
dc.contributor.googleauthorYe Jia-
dc.contributor.googleauthorJung Tak Park-
dc.contributor.googleauthorLinda L Lanting-
dc.contributor.googleauthorWen Jin-
dc.contributor.googleauthorMitsuo Kato-
dc.contributor.googleauthorZhong Gao Xu-
dc.contributor.googleauthorSadhan Das-
dc.contributor.googleauthorRama Natarajan-
dc.identifier.doi10.1089/ars.2015.6372-
dc.contributor.localIdA01654-
dc.relation.journalcodeJ00190-
dc.identifier.eissn1557-7716-
dc.identifier.pmid26492974-
dc.contributor.alternativeNamePark, Jung Tak-
dc.contributor.affiliatedAuthor박정탁-
dc.citation.volume24-
dc.citation.number7-
dc.citation.startPage361-
dc.citation.endPage375-
dc.identifier.bibliographicCitationANTIOXIDANTS & REDOX SIGNALING, Vol.24(7) : 361-375, 2016-03-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers

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