Migration-dependent extrafollicular programming of preplasmablast age-associated B cells drives lupus pathogenesis

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Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by autoantibody production. Extrafollicular (EF) B cell responses contribute to SLE pathogenesis, with age-associated B cells (ABCs) giving rise to autoantibody-secreting plasmablasts (PBs). However, the migratory cues governing this EF trajectory remain unclear. Here, we identify a distinct ABC state with PB precursor…

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