title: Vasoactive intestinal peptide induces regulatory T cells during experimental autoimmune encephalomyelitis.
abstract: CD4(+)CD25(+) regulatory T cells (Treg) control the immune response to a variety of antigens, including self-antigens. Several models support the idea of the peripheral generation of CD4(+)CD25(+) Treg from CD4(+)CD25(-) T cells. Little is known about the endogenous factors and mechanisms controlling the peripheral expansion of CD4(+)CD25(+) Treg. In this study we report on the capacity of the vasoactive intestinal peptide (VIP), an immunosuppressive neuropeptide, to induce functional Treg in vivo during the development of experimental autoimmune encephalomyelitis (EAE), a multiple sclerosis model. The administration of VIP to EAE mice results in the expansion of the CD4(+)CD25(+), Foxp3-expressing T cells in the periphery and the nervous system, which inhibit encephalitogenic T cell activation. In addition to the increase in the number of CD4(+)CD25(+) Treg, VIP induces more efficient suppressors on a per cell basis. The VIP-generated CD4(+)CD25(+) Treg transfer suppression and significantly ameliorate the progression of the disease.
authors.affiliation: Institute of Parasitology and Biomedicine, CSIC, Granada 18100, Spain.
authors.forename: Amelia
authors.initials: A
authors.lastname: Fernandez-Martin
authors.forename: Elena
authors.initials: E
authors.lastname: Gonzalez-Rey
authors.forename: Alejo
authors.initials: A
authors.lastname: Chorny
authors.forename: Doina
authors.initials: D
authors.lastname: Ganea
authors.forename: Mario
authors.initials: M
authors.lastname: Delgado
mesh_terms: D019264:Adoptive Transfer; D000818:Animals; D049109:Cell Proliferation / Q000187:drug effects*; D004681:Encephalomyelitis, Autoimmune, Experimental / Q000276:immunology* / Q000473:pathology / Q000628:therapy; D005260:Female; D051858:Forkhead Transcription Factors / Q000096:biosynthesis / Q000276:immunology; D005786:Gene Expression Regulation / Q000187:drug effects / Q000276:immunology; D007166:Immunosuppressive Agents / Q000008:administration & dosage* / Q000276:immunology; D008213:Lymphocyte Activation / Q000187:drug effects* / Q000276:immunology; D051379:Mice; D050378:T-Lymphocytes, Regulatory / Q000276:immunology* / Q000473:pathology / Q000637:transplantation; D014660:Vasoactive Intestinal Peptide / Q000008:administration & dosage* / Q000276:immunology
chemical_list: D051858:Forkhead Transcription Factors; C498833:Foxp3 protein, mouse; D007166:Immunosuppressive Agents; D014660:Vasoactive Intestinal Peptide