title: TLR and B cell receptor signals to B cells differentially program primary and memory Th1 responses to Salmonella enterica.
abstract: Protective Th1 responses to Salmonella enterica do not develop in the absence of B cells. Using chimeric mice, we dissect the early (innate) and late (cognate) contributions of B cells to Th programming. B cell-intrinsic MyD88 signaling is required for primary effector Th1 development, whereas Ag-specific BCR-mediated Ag presentation is necessary for the development of memory Th1 populations. Programming of the primary T cell response is BCR/B cell MHC II independent, but requires MyD88-dependent secretion of cytokines by B cells. Chimeras in which B cells lack IFN-gamma or IL-6 genes make impaired Th1 or Th17 responses to Salmonella.
authors.affiliation: Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
authors.forename: Tom A
authors.initials: TA
authors.lastname: Barr
authors.forename: Sheila
authors.initials: S
authors.lastname: Brown
authors.forename: Pietro
authors.initials: P
authors.lastname: Mastroeni
authors.forename: David
authors.initials: D
authors.lastname: Gray
mesh_terms: D000818:Animals; D017951:Antigen Presentation / Q000235:genetics; D016175:B-Lymphocyte Subsets / Q000276:immunology* / Q000378:metabolism / Q000382:microbiology*; D002454:Cell Differentiation / Q000235:genetics / Q000276:immunology; D002478:Cells, Cultured; D018920:Coculture Techniques; D018985:Epitopes, B-Lymphocyte / Q000502:physiology; D007156:Immunologic Memory / Q000235:genetics; D008213:Lymphocyte Activation / Q000235:genetics / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D008817:Mice, Mutant Strains; D008822:Mice, Transgenic; D053594:Myeloid Differentiation Factor 88 / Q000172:deficiency / Q000502:physiology; D011947:Receptors, Antigen, B-Cell / Q000502:physiology*; D012481:Salmonella Infections, Animal / Q000276:immunology / Q000382:microbiology; D012486:Salmonella typhimurium / Q000276:immunology*; D015398:Signal Transduction / Q000276:immunology; D018417:Th1 Cells / Q000166:cytology / Q000276:immunology* / Q000382:microbiology*; D051193:Toll-Like Receptors / Q000502:physiology*
chemical_list: D018985:Epitopes, B-Lymphocyte; C507780:Myd88 protein, mouse; D053594:Myeloid Differentiation Factor 88; D011947:Receptors, Antigen, B-Cell; D051193:Toll-Like Receptors