Title: Circadian Clock Protein CRY Regulates Autoimmunity

Accession Number: GSE87467

Link to Dataset: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE87467

Repository: Gene Expression Omnibus (GEO)

Data Type(s): Gene Expression

Experiment Type(s): Expression profiling by array

Organism(s): Mus musculus

Summary: The circadian system regulates numerous physiological processes including the adaptive immune system. Here we show that mice deficient for the circadian genes Cry1 and Cry2, (DKO) display an autoimmune phenotype including higher serum IgG concentration, presence of serum anti-nuclear antibodies, precipitation of IgG, IgM and complement 3 in glomeruli, and massive infiltrations of leukocytes into the lung and kidney. Activation of Cry DKO splenic B cells elicited markedly enhanced and prolonged tyrosine phosphorylation of cellular proteins compared to cells from control mice, suggesting that over activation of the BCR signaling pathway may contribute to autoimmunity in the Cry DKO mice. Expression of C1q, deficiency of which contributes to the pathogenesis of Systemic lupus erythematosus (SLE), was significantly downregulated in Cry DKO B cells. This suggests that B cell development, BCR signaling pathway and C1q expression may be under direct circadian control and dysregulation of which contributes to autoimmunity.

Publication(s) associated with this dataset:

• Cao Q, Zhao X, Bai J, Gery S, Sun H, Lin D, Chen Q, Chen Z, Mack L, Yang H, Deng R, Shi X, Chong L, Cho H, Xie J, Li Q, Muschen M, Atkins AR, Liddle C, Yu RT, Alkan S, Said JW, Zheng Y, Downes M, Evans RM, Koeffler HP. 2017. Circadian clock cryptochrome proteins regulate autoimmunity. Proc Natl Acad Sci U S A 114(47):12548-12553. doi:10.1073/pnas.1619119114 PMID:29109286 PMCID:PMC5703267