PMID- 23716639 OWN - NLM STAT- MEDLINE DCOM- 20131104 LR - 20211021 IS - 1362-4962 (Electronic) IS - 0305-1048 (Print) IS - 0305-1048 (Linking) VI - 41 IP - 14 DP - 2013 Aug TI - Transcriptional cross talk between orphan nuclear receptor ERRgamma and transmembrane transcription factor ATF6alpha coordinates endoplasmic reticulum stress response. PG - 6960-74 LID - 10.1093/nar/gkt429 [doi] AB - Orphan nuclear receptor ERRgamma is a member of nuclear receptor superfamily that regulates several important cellular processes including hepatic glucose and alcohol metabolism. However, mechanistic understanding of transcriptional regulation of the ERRgamma gene remains to be elucidated. Here, we report that activating transcription factor 6alpha (ATF6alpha), an endoplasmic reticulum (ER)-membrane-bound basic leucine zipper (bZip) transcription factor, directly regulates ERRgamma gene expression in response to ER stress. ATF6alpha binds to ATF6alpha responsive element in the ERRgamma promoter. The transcriptional coactivator peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1alpha) is required for this transactivation. Chromatin immunoprecipitation (ChIP) assay confirmed the binding of both ATF6alpha and PGC1alpha on the ERRgamma promoter. ChIP assay demonstrated histone H3 and H4 acetylation occurs at the ATF6alpha and PGC1alpha binding site. Of interest, ERRgamma along with PGC1alpha induce ATF6alpha gene transcription upon ER stress. ERRgamma binds to an ERRgamma responsive element in the ATF6alpha promoter. ChIP assay confirmed that both ERRgamma and PGC1alpha bind to a site in the ATF6alpha promoter that exhibits histone H3 and H4 acetylation. Overall, for the first time our data show a novel pathway of cross talk between nuclear receptors and ER-membrane-bound transcription factors and suggest a positive feed-forward loop regulates ERRgamma and ATF6alpha gene transcription. FAU - Misra, Jagannath AU - Misra J AD - Center for Nuclear Receptor Signals, Hormone Research Center, School of Biological Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea. FAU - Kim, Don-Kyu AU - Kim DK FAU - Choi, Woogyun AU - Choi W FAU - Koo, Seung-Hoi AU - Koo SH FAU - Lee, Chul-Ho AU - Lee CH FAU - Back, Sung-Hoon AU - Back SH FAU - Kaufman, Randal J AU - Kaufman RJ FAU - Choi, Hueng-Sik AU - Choi HS LA - eng GR - DK088227/DK/NIDDK NIH HHS/United States GR - DK042394/DK/NIDDK NIH HHS/United States GR - DK093074/DK/NIDDK NIH HHS/United States GR - HL052173/HL/NHLBI NIH HHS/United States GR - HL057346R01/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130528 PL - England TA - Nucleic Acids Res JT - Nucleic acids research JID - 0411011 RN - 0 (Activating Transcription Factor 6) RN - 0 (Atf6 protein, mouse) RN - 0 (ESRRG protein, human) RN - 0 (Esrrg protein, mouse) RN - 0 (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha) RN - 0 (Ppargc1a protein, mouse) RN - 0 (Receptors, Estrogen) RN - 0 (Transcription Factors) SB - IM MH - Activating Transcription Factor 6/biosynthesis/genetics/*metabolism MH - Animals MH - Cell Line MH - Endoplasmic Reticulum Stress/*genetics MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha MH - Receptors, Estrogen/biosynthesis/genetics/*metabolism MH - Response Elements MH - Transcription Factors/metabolism MH - *Transcriptional Activation PMC - PMC3737538 EDAT- 2013/05/30 06:00 MHDA- 2013/11/05 06:00 PMCR- 2013/05/28 CRDT- 2013/05/30 06:00 PHST- 2013/05/30 06:00 [entrez] PHST- 2013/05/30 06:00 [pubmed] PHST- 2013/11/05 06:00 [medline] PHST- 2013/05/28 00:00 [pmc-release] AID - gkt429 [pii] AID - 10.1093/nar/gkt429 [doi] PST - ppublish SO - Nucleic Acids Res. 2013 Aug;41(14):6960-74. doi: 10.1093/nar/gkt429. Epub 2013 May 28.