title: In vitro suppression assay for functional assessment of human regulatory T cells.
abstract: FOXP3(+) regulatory T cells (Tregs) play an important role in controlling immune activation, maintenance of -homeostasis and the prevention of autoimmunity. Much effort has been focused in assessing their potential defects in certain human diseases and in developing potential Treg immunotherapy to cure autoimmune conditions. One cardinal feature of Tregs is their ability to suppress the activation and proliferation of effector T cells. The in vitro suppression assay is a convenient and relatively reliable method to quantify their suppressive function and validate their identity as true Tregs. This protocol describes a reliable, nonradioactive in vitro suppression assay to assess the immunosuppressive property of human Tregs in inhibiting proliferation of dye-labeled responder T cells using non-irradiated, HLA-DR(+) antigen presenting cells and soluble anti-CD3 antibodies as stimuli.
authors: Division of Pediatric Research Center, Department of Pediatrics, The University of Texas Medical School at Houston, Houston, TX, USA. dat.q.tran@uth.tmc.edu
authors: Dat Q
authors: DQ
authors: Tran
mesh_terms: D000938:Antigen-Presenting Cells / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D049109:Cell Proliferation; D003584:Cytological Techniques / Q000379:methods*; D005434:Flow Cytometry; D005452:Fluoresceins / Q000378:metabolism; D006684:HLA-DR Antigens / Q000378:metabolism; D006801:Humans; D008213:Lymphocyte Activation; D013194:Staining and Labeling; D013388:Succinimides / Q000378:metabolism; D050378:T-Lymphocytes, Regulatory / Q000166:cytology* / Q000276:immunology* / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism
chemical_list: C087165:5-(6)-carboxyfluorescein diacetate succinimidyl ester; D005452:Fluoresceins; D006684:HLA-DR Antigens; D013388:Succinimides; D013936:Thymidine