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Age-associated B cells (ABCs) are a stable subset of memory B lymphocytes that develop during microbial infections and in autoimmune diseases. Despite growing appreciation of their phenotypic and functional characteristics, the transcriptional networks involved in ABC fate commitment and maintenance have remained elusive. In their recent publication, Dai et al. tackle this problem, leveraging both mouse models and human diseases to reveal zinc finger E-box-binding homeobox 2 (ZEB2) as a key transcriptional regulator of ABC lineage specification. In aggregate, their results show that ZEB2, a member of the zinc finger E homeobox binding family, promotes ABC differentiation by repressing alternative differentiative fates and targeting genes important for ABC character and function. Moreover, their results strengthen the case for causal links between ABC fate and function in autoimmune pathologies.
Keyword:
Age-associated B cells
autoimmune disease
memory B lymphocytes
microbial infection
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