The transcription factor Zeb2 drives differentiation of age-associated B cells
D. Dai, S. Gu, X. Han, H. Ding, Y. Jiang, X. ZhangiD, C. Yao, S. Hong, J. Zhang, Y. Shen, G. Hou, B. Qu, H. Zhou, Y. Qin, Y. He, J. Ma, Z. Yin, Z. Ye, J. Qian, Q. Jiang, L. Wu, Q. Guo, S. Chen, C. Huang, L. Kottyan, , N. Shen
Abstract
Age-associated B-cells (ABCs) accumulate during infection, aging and autoimmunity, contributing to lupus pathogenesis. Here, we screen for transcription factors driving ABC formation and find Zeb2 is required for human and mouse ABC differentiation in-vitro. ABCs are reduced in ZEB2 haploinsufficient individuals and in mice lacking Zeb2 in B-cells. In mice with TLR7-driven lupus, Zeb2 is essential for ABC formation and autoimmune pathology. Zeb2 binds to the +20kb intronic enhancer of Mef2b, repressing Mef2b-mediated germinal center B-cell differentiation and promoting ABC formation. Zeb2 also targets genes important for ABC specification and function including Itgax. Zeb2-driven ABC differentiation requires Jak-Stat signaling, and treatment with the Jak1/3 inhibitor tofacitinib reduces ABC accumulation in autoimmune mice and patients. Zeb2 thus emerges as a driver of B-cell autoimmunity. One-Sentence SummaryZeb2 is essential for Age-associated B cells differentiation and function.
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