Abstract | BACKGROUND: Transfer of CD4CD45RB T cells from normal donors to SCID/Rag-1, 2-deficient mice, which lack T and B cells, leads to the development of a TH1-mediated inflammatory bowel disease (IBD)-like syndrome characterized by extensive mononuclear cell infiltrates and epithelial cell hyperplasia. Because it is well known that B cells are also involved in a multitude of mechanistic pathways in human IBD, this study attempts to establish a new model of colitis in nude mice. METHODS: We transferred CD4CD45RB T cells into athymic nude mice, which lack thymus-dependent T cells but retain normal B cells, to establish and investigate a B cell-involving chronic colitis model. As a control, CD4CD25 T cells were also used. RESULTS: Mice reconstituted with CD4CD45RB but not CD4CD25 T cells developed a wasting disease, with severe infiltrates of B cell aggregates as well as T cells, macrophages, and dendritic cells into the colon and elevated levels of interferon-gamma, tumor necrosis factor-alpha, interleukin (IL)-4, IL-5, and IL-10, by 7 weeks after T cell transfer. Furthermore, the infiltrated lamina propria B cells in colitic nude mice consisted predominantly of massive aggregated immunoglobulin (Ig) M- and scattered IgG-positive cells, but not IgA-positive cells. In contrast, mice reconstituted with CD4CD45RB and CD4CD45RB did not develop wasting disease or colitis. CONCLUSIONS: Collectively, the power of the colitis model induced by the adoptive transfer of CD4CD45RB T cells into nude mice is that one can investigate the roles of TH2-type cells and B cells in a regulatory T cell-depleted condition.
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Authors | Takanori Kanai, Takahiro Kawamura, Taeko Dohi, Shin Makita, Yasuhiro Nemoto, Teruji Totsuka, Mamoru Watanabe |
Journal | Inflammatory bowel diseases
(Inflamm Bowel Dis)
Vol. 12
Issue 2
Pg. 89-99
(Feb 2006)
ISSN: 1078-0998 [Print] England |
PMID | 16432372
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Autoantibodies
- Cytokines
- Leukocyte Common Antigens
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Topics |
- Adoptive Transfer
(methods)
- Animals
- Autoantibodies
(analysis, immunology)
- Autoimmune Diseases
(immunology, pathology)
- Biopsy, Needle
- CD4-Positive T-Lymphocytes
(immunology, transplantation)
- Colitis, Ulcerative
(immunology, pathology)
- Cytokines
(analysis, immunology)
- Disease Models, Animal
- Female
- Flow Cytometry
- Immunohistochemistry
- Leukocyte Common Antigens
(immunology)
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Probability
- Species Specificity
- Statistics, Nonparametric
- T-Lymphocyte Subsets
(immunology)
- Wasting Syndrome
(immunology, physiopathology)
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