| First Author | Corazza N | Year | 1999 |
| Journal | J Exp Med | Volume | 190 |
| Issue | 10 | Pages | 1479-92 |
| PubMed ID | 10562322 | Mgi Jnum | J:58495 |
| Mgi Id | MGI:1347725 | Doi | 10.1084/jem.190.10.1479 |
| Citation | Corazza N, et al. (1999) Nonlymphocyte-derived tumor necrosis factor is required for induction of colitis in recombination activating gene (RAG)2(-/-) mice upon transfer of CD4(+)CD45RB(hi) T cells. J Exp Med 190(10):1479-92 |
| abstractText | In this study, we addressed the role of tumor necrosis factor (TNF)-alpha and lymphotoxin (LT)-alpha in the development of colitis and defined the cellular sources (T cells versus non-T cells) of TNF (TNF-alpha and LT-alpha) relevant to disease development. After adoptive transfer of TNF(+/+) CD4(+)CD45RB(hi) splenocytes into TNF(+/+) recombination activating gene (RAG)2(-/-) mice, the recipients develop massive inflammation of the large intestinal mucosa concurrent with massive weight loss. In contrast, clinical signs of disease are completely absent in TNF(-/-)RAG2(-/-) recipients of TNF(-/-) CD4(+)CD45RB(hi) T cells, although elevated numbers of interferon-gamma-producing cells are present in the colonic mucosa. Surprisingly, upon transfer of TNF(-/-)CD4(+)CD45RB(hi) T cells into TNF(+/+)RAG2(-/-) recipients, colitis develops with kinetics similar to those upon transfer of TNF(+/+)CD4(+)CD45RB(hi) donor cells. In contrast, no clinical signs of colitis are observed in TNF(-/-)RAG2(-/-) recipients of TNF(+/+)CD4(+)CD45RB(hi) T cells. This protection from colitis is not a consequence of the absence of LT-alpha, as TNF-alpha(-/-)RAG2(-/-) recipients of TNF-alpha(-/-) CD4(+)CD45RB(hi) T cells are also protected from colitis induction. These results demonstrate the importance of TNF production by non-T cells of the colonic mucosa in the pathogenesis of colitis and provide direct evidence for a nonredundant role of TNF-alpha in this mouse model of colitis. |
