title: c-Jun controls histone modifications, NF-kappaB recruitment, and RNA polymerase II function to activate the ccl2 gene.
abstract: Interleukin-1 (IL-1)-induced mRNA expression of ccl2 (also called MCP-1), a prototypic highly regulated inflammatory gene, is severely suppressed in cells lacking c-Jun or Jun N-terminal protein kinase 1 (JNK1)/JNK2 genes and is only partially restored in cells expressing a c-Jun(SS63/73AA) mutant protein. We used chromatin immunoprecipitation to identify three c-Jun-binding sites located in the far 5' region close to the transcriptional start site and in the far 3' region of murine and human ccl2 genes. Mutational analysis revealed that the latter two sites contribute to ccl2 transcription in response to the presence of IL-1 or of ectopically expressed c-Jun-ATF-2 dimers. Further experiments comparing wild-type and c-Jun-deficient cells revealed that c-Jun regulates Ser10 phosphorylation of histone H3, acetylation of histones H3 and H4, and recruitment of histone deacetylase 3 (HDAC3), NF-kappaB subunits, and RNA polymerase II across the ccl2 locus. c-Jun also coimmunoprecipitated with p65 NF-kappaB and HDAC3. Based on DNA microarray analysis, c-Jun was required for full expression of 133 out of 162 IL-1-induced genes. For inflammatory genes, these data support the idea of an activator function of c-Jun that is executed by multiple mechanisms, including phosphorylation-dependent interaction with p65 NF-kappaB and HDAC3 at the level of chromatin.
authors.affiliation: Institute of Pharmacology, Medical School Hannover, Carl-Neuberg Strasse 1, D-30625 Hannover, Germany.
authors.forename: Sabine
authors.initials: S
authors.lastname: Wolter
authors.forename: Anneke
authors.initials: A
authors.lastname: Doerrie
authors.forename: Axel
authors.initials: A
authors.lastname: Weber
authors.forename: Heike
authors.initials: H
authors.lastname: Schneider
authors.forename: Elke
authors.initials: E
authors.lastname: Hoffmann
authors.forename: Juliane
authors.initials: J
authors.lastname: von der Ohe
authors.forename: Latifa
authors.initials: L
authors.lastname: Bakiri
authors.forename: Erwin F
authors.initials: EF
authors.lastname: Wagner
authors.forename: Klaus
authors.initials: K
authors.lastname: Resch
authors.forename: Michael
authors.initials: M
authors.lastname: Kracht
mesh_terms: D000818:Animals; D001665:Binding Sites; D002460:Cell Line; D018932:Chemokine CCL2 / Q000235:genetics*; D047369:Chromatin Immunoprecipitation; D004252:DNA Mutational Analysis; D005347:Fibroblasts / Q000201:enzymology; D005786:Gene Expression Regulation; D006657:Histones / Q000378:metabolism*; D006801:Humans; D048031:JNK Mitogen-Activated Protein Kinases / Q000378:metabolism; D051379:Mice; D008954:Models, Biological; D016328:NF-kappa B / Q000378:metabolism*; D011485:Protein Binding; D011499:Protein Processing, Post-Translational; D016755:Proto-Oncogene Proteins c-jun / Q000378:metabolism*; D012319:RNA Polymerase II / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism
chemical_list: C111835:CCL2 protein, human; C491768:Ccl2 protein, mouse; D018932:Chemokine CCL2; D006657:Histones; D016328:NF-kappa B; D016755:Proto-Oncogene Proteins c-jun; D012333:RNA, Messenger; D048031:JNK Mitogen-Activated Protein Kinases; D012319:RNA Polymerase II