title: Dendritic cells control B cell growth and differentiation.
abstract: We propose a model where human dendritic cell (DC) subsets control, in a coordinated fashion, B cell growth and differentiation. Plasmacytoid DCs drive memory B cell differentiation into effector plasma cell via type I interferon and IL-6. Type I interferon activates myeloid DCs that regulate B cell priming and acquisition of memory phenotype via IL-12, IL-6 and Blys/Baff. This model also integrates the role of antigen-specific T cells activated by myeloid DCs. Thus, protective humoral immunity results from a highly coordinated interplay of human DC subsets. This interplay may explain the spreading of immune response to deal with antigenic drift and to maintain an active immunity against mutating microbe. It may also provide an explanation for spreading of the autoimmune repertoire as autoimmunity develops.
authors.affiliation: Baylor Institute for Immunology Research and Baylor NIAID Cooperative Center for Translational Research on Human Immunology and Biodefense, Dallas, TX 75204, USA.
authors.forename: Gaetan
authors.initials: G
authors.lastname: Jego
authors.forename: Virginia
authors.initials: V
authors.lastname: Pascual
authors.forename: A Karolina
authors.initials: AK
authors.lastname: Palucka
authors.forename: Jacques
authors.initials: J
authors.lastname: Banchereau
mesh_terms: D015551:Autoimmunity; D001402:B-Lymphocytes / Q000166:cytology* / Q000276:immunology*; D002454:Cell Differentiation; D002455:Cell Division; D003713:Dendritic Cells / Q000145:classification / Q000276:immunology*; D006801:Humans; D017578:Immunoglobulin Class Switching; D007156:Immunologic Memory; D007370:Interferon Type I / Q000378:metabolism; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D018448:Models, Immunological; D009838:Oligodeoxyribonucleotides / Q000494:pharmacology; D010950:Plasma Cells / Q000145:classification / Q000276:immunology
chemical_list: C408982:CPG-oligonucleotide; D007370:Interferon Type I; D009838:Oligodeoxyribonucleotides