Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/60360
DC FieldValueLanguage
dc.contributor.authorLai, P.H.en_US
dc.contributor.author楊文明zh_TW
dc.contributor.authorWang, W.L.en_US
dc.contributor.authorKo, C.Y.en_US
dc.contributor.authorLee, Y.C.en_US
dc.contributor.authorYang, W.M.en_US
dc.contributor.authorShen, T.W.en_US
dc.contributor.authorChang, W.C.en_US
dc.contributor.authorWang, J.M.en_US
dc.date2008zh_TW
dc.date.accessioned2014-06-09T05:56:18Z-
dc.date.available2014-06-09T05:56:18Z-
dc.identifier.issn0167-4889zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/60360-
dc.description.abstractCCAAT/Enhancer binding proteins (C/EBPs) and peroxisome proliferator-activated receptors gamma (PPARG) play critical roles in the regulation of lipid metabolism genes. Overexpression of CEBPdelta (CEBPD) enhances lipid accumulation and specifically activates PPARG2 transcription in HepG2 cells. By using 5'-serial deletion reporter analysis, we show that the region comprising the -457 to +129 base pairs is required for CEBPD response of the PPARG2 promoter. Two critical CEBPD-binding motifs on the -324/-311 and -158/-145 of human PPARG2 promoter are identified. We previously have shown that the human CEBPD is sumoylated by small ubiquitin-related modifier-1 (SUMO1). We further demonstrated that the sumoylation of CEBPD lysine 120 is also detectable in HepG2 cells, and this modification functions for binding of the recruits, HDAC1 and HDAC3. Meanwhile, an in vivo chromatin IP assay demonstrated that the sumoylation mutant of CEBPD lost a significant portion of HDAC1 and HDAC3 interaction. Combining that the increasing amount of CEBPD and the sumoylated CEBPD (suCEBPD) consistently responded to lipogenic stimulation, these results suggest that the excess non-sumoylated CEBPD could be a critical activator which reverses suCEBPD/HDAC1/HDAC3-mediated PPARG2 gene inactivation and promotes hepatic lipogenesis. Taken together, we suggest that suCEBPD/HDAC1/HDAC3 complex inactivates PPARG2 transcription, and the induction of CEBPD expression transiently activates PPARG2 transcription which is involved in adipocyte-like lipogenesis in HepG2 cells. (c) 2008 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationBiochimica Et Biophysica Acta-Molecular Cell Researchen_US
dc.relation.ispartofseriesBiochimica Et Biophysica Acta-Molecular Cell Research, Volume 1783, Issue 10, Page(s) 1803-1814.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.bbamcr.2008.06.008en_US
dc.subjectPPARG2en_US
dc.subjectCEBPDen_US
dc.subjectlipogenesisen_US
dc.subjectHDAC1/3en_US
dc.subjectsumoylationen_US
dc.subjectactivated receptor-gammaen_US
dc.subjectterminal adipocyte differentiationen_US
dc.subjectbinding-protein-deltaen_US
dc.subjectgene-expressionen_US
dc.subject3t3-l1 cellsen_US
dc.subjectc/ebp-alphaen_US
dc.subjectin-vitroen_US
dc.subjectretinoblastoma proteinen_US
dc.subjecthistone deacetylase-3en_US
dc.subjectadiposeen_US
dc.subjectconversionen_US
dc.titleHDAC1/HDAC3 modulates PPARG2 transcription through the sumoylated CEBPD in hepatic lipogenesisen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.bbamcr.2008.06.008zh_TW
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