title: Differentiated Th1 autoreactive effector cells can induce experimental autoimmune encephalomyelitis in the absence of IL-12 and CD40/CD40L interactions.
abstract: IL-12 plays a critical role in the priming of Th1 responses to bacterial/parasitic antigens and autoantigens. Several studies have demonstrated a dependency on CD40/CD40L interactions and IL-12 for maintenance of both antibacterial/parasitic and autoreactive Th1 cells in vivo. However, it is still unclear if fully differentiated Th1 effectors require continued stimulation by IL-12. We demonstrate that the proliferative response and IFN-gamma production by a fully differentiated T cell line specific for myelin oligodendrocyte glycoprotein are completely independent of IL-12 and CD40/CD40L interactions. The capacity of this line to adoptively transfer experimental autoimmune encephalomyelitis is also independent of IL-12 and CD40/CD40L. These results have important implications regarding the therapeutic usefulness of blockade of IL-12 or the CD40/CD40L pathway for treatment of autoimmune disease.
authors.affiliation: Laboratory of Immunology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, 10/11N307, 10 Center Drive-MSC 1892, Bethesda, MD 20892-1892, USA.
authors.forename: Itzhak
authors.initials: I
authors.lastname: Mendel
authors.forename: Ethan M
authors.initials: EM
authors.lastname: Shevach
mesh_terms: D019264:Adoptive Transfer; D000818:Animals; D019013:CD40 Antigens / Q000235:genetics / Q000276:immunology* / Q000378:metabolism; D023201:CD40 Ligand / Q000276:immunology* / Q000378:metabolism; D002454:Cell Differentiation / Q000276:immunology; D002455:Cell Division / Q000276:immunology; D004195:Disease Models, Animal; D004681:Encephalomyelitis, Autoimmune, Experimental / Q000235:genetics / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry; D006023:Glycoproteins / Q000276:immunology; D007371:Interferon-gamma / Q000096:biosynthesis; D018664:Interleukin-12 / Q000235:genetics / Q000276:immunology*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D063308:Myelin-Oligodendrocyte Glycoprotein; D010446:Peptide Fragments / Q000276:immunology; D018123:Receptors, Interleukin / Q000096:biosynthesis; D053707:Receptors, Interleukin-12; D018417:Th1 Cells / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D018418:Th2 Cells / Q000276:immunology
chemical_list: D019013:CD40 Antigens; D006023:Glycoproteins; D063308:Myelin-Oligodendrocyte Glycoprotein; D010446:Peptide Fragments; D018123:Receptors, Interleukin; D053707:Receptors, Interleukin-12; C445081:myelin oligodendrocyte glycoprotein (35-55); D023201:CD40 Ligand; D018664:Interleukin-12; D007371:Interferon-gamma