6533b834fe1ef96bd129e1e6
RESEARCH PRODUCT
Tolerance without clonal expansion: self-antigen-expressing B cells program self-reactive T cells for future deletion.
Thorsten BuchAri WaismanF. Thomas WunderlichTobias J. A. J. HeinenWerner MüllerNir YogevAxel RoersFriederike FrommerStephen M. AndertonEstelle Bettellisubject
T-LymphocytesProgrammed Cell Death 1 ReceptorAutoimmunityAntigens CD/biosynthesisAntigens CD5/geneticsAutoantigensInterleukin 21MiceImmunology and AllergyCytotoxic T cellHomeostasisCTLA-4 AntigenIL-2 receptorAntigens Differentiation/biosynthesisB-LymphocytesAntigens CD/geneticsB-Lymphocytes/immunologyT-Lymphocytes/metabolismNatural killer T cellCell biologymedicine.anatomical_structureHomeostasis/immunology2723 Immunology and AllergyAntigens CD5/biosynthesisAntigens Differentiation/geneticsAntigens CD5/immunologyT cellImmunologyAntigens CD/immunologyClonal Deletion610 Medicine & healthchemical and pharmacologic phenomenaMice TransgenicBiologyAutoantigens/biosynthesisCD5 AntigensAutoimmunity/physiologyAutoantigens/immunologyAntigens CDmedicineAnimalsB-Lymphocytes/metabolismAntigen-presenting cellCell Proliferation2403 ImmunologyAntigens Differentiation/immunologyGene Expression Regulation/immunologyCD40Clonal Deletion/physiologyT-Lymphocytes/immunologyAntigens Differentiation10040 Clinic for NeurologyB-1 cellGene Expression Regulationbiology.proteindescription
Abstract B cells have been shown in various animal models to induce immunological tolerance leading to reduced immune responses and protection from autoimmunity. We show that interaction of B cells with naive T cells results in T cell triggering accompanied by the expression of negative costimulatory molecules such as PD-1, CTLA-4, B and T lymphocyte attenuator, and CD5. Following interaction with B cells, T cells were not induced to proliferate, in a process that was dependent on their expression of PD-1 and CTLA-4, but not CD5. In contrast, the T cells became sensitive to Ag-induced cell death. Our results demonstrate that B cells participate in the homeostasis of the immune system by ablation of conventional self-reactive T cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-10-15 |