title: Histone lysine demethylase JARID1a activates CLOCK-BMAL1 and influences the circadian clock.
abstract: In animals, circadian oscillators are based on a transcription-translation circuit that revolves around the transcription factors CLOCK and BMAL1. We found that the JumonjiC (JmjC) and ARID domain-containing histone lysine demethylase 1a (JARID1a) formed a complex with CLOCK-BMAL1, which was recruited to the Per2 promoter. JARID1a increased histone acetylation by inhibiting histone deacetylase 1 function and enhanced transcription by CLOCK-BMAL1 in a demethylase-independent manner. Depletion of JARID1a in mammalian cells reduced Per promoter histone acetylation, dampened expression of canonical circadian genes, and shortened the period of circadian rhythms. Drosophila lines with reduced expression of the Jarid1a homolog, lid, had lowered Per expression and similarly altered circadian rhythms. JARID1a thus has a nonredundant role in circadian oscillator function.
authors.affiliation: Regulatory Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
authors.forename: Luciano
authors.initials: L
authors.lastname: DiTacchio
authors.forename: Hiep D
authors.initials: HD
authors.lastname: Le
authors.forename: Christopher
authors.initials: C
authors.lastname: Vollmers
authors.forename: Megumi
authors.initials: M
authors.lastname: Hatori
authors.forename: Michael
authors.initials: M
authors.lastname: Witcher
authors.forename: Julie
authors.initials: J
authors.lastname: Secombe
authors.forename: Satchidananda
authors.initials: S
authors.lastname: Panda
mesh_terms: D056930:ARNTL Transcription Factors / Q000378:metabolism*; D000107:Acetylation; D000818:Animals; D056926:CLOCK Proteins / Q000378:metabolism*; D057906:Circadian Clocks; D004268:DNA-Binding Proteins; D004330:Drosophila / Q000235:genetics / Q000502:physiology; D029721:Drosophila Proteins / Q000235:genetics / Q000378:metabolism; D005786:Gene Expression Regulation; D057809:HEK293 Cells; D056572:Histone Deacetylase Inhibitors; D006655:Histone Deacetylases / Q000378:metabolism; D056466:Histone Demethylases; D011495:Histone-Lysine N-Methyltransferase / Q000235:genetics / Q000378:metabolism; D006657:Histones / Q000378:metabolism; D006801:Humans; D056484:Jumonji Domain-Containing Histone Demethylases; D008297:Male; D051379:Mice; D018345:Mice, Knockout; D056950:Period Circadian Proteins / Q000235:genetics; D011401:Promoter Regions, Genetic; D056485:Retinoblastoma-Binding Protein 2 / Q000378:metabolism*; D014158:Transcription, Genetic; D014162:Transfection
chemical_list: D056930:ARNTL Transcription Factors; C538961:Bmal1 protein, mouse; D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; D056572:Histone Deacetylase Inhibitors; D006657:Histones; C513312:Per2 protein, mouse; D056950:Period Circadian Proteins; D056466:Histone Demethylases; D056484:Jumonji Domain-Containing Histone Demethylases; C485614:Kdm5b protein, mouse; C518655:Lid protein, Drosophila; D056485:Retinoblastoma-Binding Protein 2; D011495:Histone-Lysine N-Methyltransferase; D056926:CLOCK Proteins; C538944:Clock protein, mouse; D006655:Histone Deacetylases