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Cao Q; Zhao X; Bai J; Gery S; Sun H; Lin DC; Chen Q; Chen Z; Mack L; Yang H; Deng R; Shi X; Chong LW; Cho H; Xie J; Li QZ; Müschen M; Atkins AR; Liddle C; Yu RT; Alkan S; Said JW; Zheng Y; Downes M; Evans RM; Koeffler HP
Proc Natl Acad Sci U S A 2017[Nov]; 114 (47): 12548-53 PMID29109286show ga
Accumulated data show that circadian rhythms act as important regulators of specific immune functions, including activities of Toll-like receptor 9, macrophages, and Interleukin-17?producing CD4+ T helper (TH17) cells. In this study, we show that mice deficient of the circadian clock genes Cry1 and Cry2 unexpectedly display an autoimmune phenotype including high serum IgG concentrations, the presence of serum antinuclear antibodies, and precipitation of IgG, IgM, and complement 3 in glomeruli. Our results suggest that B cell development, the B cell-receptor?signaling pathway, and C1q expression are regulated by CRY proteins and that their dysregulation contributes to autoimmunity.