title: T cell tolerance and autoimmunity.
abstract: Many T cells with auto-aggressive potential are deleted in the thymus. Although some of these escape to the general circulation, they do not usually damage organs such as the pancreas. To investigate the mechanisms preventing autoimmunity, we generated transgenic mice expressing known genes under the control of various promoters. We found that the occurrence of autoaggression depended on factors such as the precursor frequency of responding T cells, their state of activation, their accessibility to the autoantigen, the physicochemical properties of the autoantigen, the possibility of priming by environmental antigens which mimic the target antigen, and some inflammatory reaction in the target site.
authors.affiliation: Walter and Eliza Hall Institute of Medical Research, Royal Melbourne Hospital, Victoria, Australia.
authors.forename: J F
authors.initials: JF
authors.lastname: Miller
authors.forename: W R
authors.initials: WR
authors.lastname: Heath
authors.forename: J
authors.initials: J
authors.lastname: Allison
authors.forename: G
authors.initials: G
authors.lastname: Morahan
authors.forename: M
authors.initials: M
authors.lastname: Hoffmann
authors.forename: C
authors.initials: C
authors.lastname: Kurts
authors.forename: H
authors.initials: H
authors.lastname: Kosaka
mesh_terms: D000818:Animals; D001327:Autoimmune Diseases / Q000276:immunology*; D015551:Autoimmunity; D003921:Diabetes Mellitus, Experimental / Q000276:immunology; D006183:H-2 Antigens / Q000276:immunology; D007108:Immune Tolerance; D007515:Islets of Langerhans / Q000276:immunology; D008668:Metallothionein / Q000235:genetics; D051379:Mice; D008822:Mice, Transgenic; D010047:Ovalbumin / Q000276:immunology; D011401:Promoter Regions, Genetic; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000166:cytology / Q000276:immunology
chemical_list: D006183:H-2 Antigens; D010047:Ovalbumin; D008668:Metallothionein