0000000000027939
AUTHOR
Kai-michael Toellner
Rhythmicity of Intestinal IgA Responses Confers Oscillatory Commensal Microbiota Mutualism
ABSTRACTMutualistic interactions with the commensal microbiota are enforced through a range of immune responses that confer metabolic benefits for the host and ensure tissue health and homeostasis. Immunoglobulin (Ig)A responses directly determine the composition of commensal species that colonize the intestinal tract but require significant metabolic resources to fuel antibody production by tissue-resident plasma cells. Here we demonstrate IgA responses are subject to diurnal regulation by dietary-derived metabolic cues and a cell-intrinsic circadian clock. Rhythmicity in IgA secretion conferred oscillatory patterns on the commensal microbial community and its associated metabolic activity…
Germinal center B cells govern their own fate via antibody feedback
High-affinity antibodies reenter germinal centers (GCs) and limit antigen access, thus causing sustained directional evolution in GCs toward higher-affinity antibody production.
Pre-conception maternal helminth infection transfers via nursing long-lasting cellular immunity against helminths to offspring
Mothers transfer immune cells via breastfeeding to provide offspring with long-term protection from parasitic infection.