title: Emerging concepts in CD8(+) T regulatory cells.
abstract: CD8(+) T regulatory cells (T regs) are elicited by unique antigen presenting cells during viral infections, by manipulation of co-stimulatory molecules, or in the development of tumors. CD8(+) T regs display antigen-specificity, which is most exquisitely manifested by the HLA-E-restricted cytolytic CD8(+) T regs in MS. There is evidence that some CD8(+) T regs also express organ specificity. In many cases, IFN-gamma is required for either the induction or expression of CD8(+) T regs. CD8(+) T regs can produce suppression directly by killing immune cells or indirectly by co-opting other cells to elaborate end-stage suppressive molecules such as TGF-beta, IL-10, and indoleamine dioxygenase (IDO).
authors.affiliation: Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. jerry.niederkorn@utsouthwestern.edu
authors.forename: Jerry Y
authors.initials: JY
authors.lastname: Niederkorn
mesh_terms: D000818:Animals; D000941:Antigens / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D008213:Lymphocyte Activation; D009103:Multiple Sclerosis / Q000276:immunology; D009369:Neoplasms / Q000276:immunology; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology
chemical_list: D000941:Antigens