title: T cell-induced inflammation of the small and large intestine in immunodeficient mice.
abstract: It is well known that transfer of CD4+CD45RBhigh (naïve) T cells into syngeneic lymphocyte-deficient mice induces chronic colitis. However, no studies have reported the presence of small bowel inflammation in this T cell-dependent model. Therefore, the objective of this study was to evaluate and compare small and large bowel inflammation induced by transfer of naïve T cells into two different immunodeficient recipient mice. T and B cell-deficient recombinase activating gene 1-deficient [RAG knockout (KO)] and T cell-deficient T cell receptor-beta x T cell receptor-delta double-deficient (TCR KO) mice were reconstituted with wild-type naïve T cells and observed for signs of disease. We found that reconstituted RAG KO mice developed moderate to severe colitis and inflammation of the entire small intestine at 6-8 wk after T cell transfer. Adoptive transfer of naïve T cells into TCR KO mice induced a milder form of chronic colitis and small bowel inflammation that was confined primarily to the duodenum at 10-12 wk after T cell transfer. T helper cell 1 and macrophage-derived proinflammatory cytokine mRNA levels correlated well with the localization and severity of the chronic large and small bowel inflammation. In addition, we observed comparable homing and expansion of donor lymphocytes in the gut and secondary lymphoid tissues of both recipients. Taken together, our data demonstrate that transfer of naïve T cells into immunodeficient recipient mice induces both chronic small and large bowel inflammation and that the presence of B cells in the TCR KO recipients may play a role in regulating chronic intestinal inflammation.
authors.affiliation: Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, 1501 Kings Hwy., PO Box 33932, Shreveport, LA 71130-3932, USA.
authors.forename: Dmitry V
authors.initials: DV
authors.lastname: Ostanin
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Pavlick
authors.forename: Sulaiman
authors.initials: S
authors.lastname: Bharwani
authors.forename: Dwain
authors.initials: D
authors.lastname: D'Souza
authors.forename: Kathryn L
authors.initials: KL
authors.lastname: Furr
authors.forename: Carla M
authors.initials: CM
authors.lastname: Brown
authors.forename: Matthew B
authors.initials: MB
authors.lastname: Grisham
mesh_terms: D019264:Adoptive Transfer; D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D005260:Female; D016654:Genes, RAG-1 / Q000235:genetics; D007153:Immunologic Deficiency Syndromes / Q000235:genetics* / Q000276:immunology; D007420:Intestine, Large / Q000276:immunology* / Q000473:pathology*; D007421:Intestine, Small / Q000276:immunology* / Q000473:pathology*; D008297:Male; D051379:Mice; D018345:Mice, Knockout; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000172:deficiency / Q000235:genetics / Q000276:immunology; D014185:Transplantation, Isogeneic
chemical_list: D016693:Receptors, Antigen, T-Cell, alpha-beta