Characterization of chemokines and chemokine receptors in two murine models of inflammatory bowel disease: IL-10/ mice and Rag-2/ mice reconstituted with CD4+CD45RBhigh T cells
| Autor: | Rene de Waal-Malefyt, Heleen Scheerens, Edith M. Hessel, Donna Rennick, Michael W. Leach |
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| Rok vydání: | 2001 |
| Předmět: |
CCR2
Chemokine Colon Immunology CCR4 C-C chemokine receptor type 6 Biology Inflammatory bowel disease Mice Chemokine receptor medicine Animals Immunology and Allergy RNA Messenger CCL13 Receptor Cells Cultured Mice Knockout Antibodies Monoclonal Th1 Cells Inflammatory Bowel Diseases medicine.disease Adoptive Transfer Interleukin-12 Interleukin-10 DNA-Binding Proteins Disease Models Animal Gene Expression Regulation Acute Disease biology.protein Receptors Chemokine Chemokines Gene Deletion |
| Zdroj: | European Journal of Immunology. 31:1465-1474 |
| ISSN: | 1521-4141 0014-2980 |
| DOI: | 10.1002/1521-4141(200105)31:5<1465::aid-immu1465>3.0.co;2-e |
| Popis: | We used quantitative PCR to investigate the expression of chemokines and chemokine receptors in two Th1-mediated murine models of inflammatory bowel disease (IBD). First, mRNA levels encoding the chemokines MIG, RANTES, lymphotactin, MIP-3alpha, TCA-3, TARC, MIP-3beta, LIX, MCP-1 and MIP-1beta and the receptors CCR4, CCR6 and CCR2 were significantly increased in chronically inflamed colons of IL-10-/- mice when compared with wildtype mice. Interestingly, reversal of colitis in IL-10-/- mice by anti-IL-12 mAb was accompanied by the inhibition in the expression of LIX, lymphotactin, MCP-1, MIG, MIP-3alpha, MIP-3beta, TCA-3, CCR2 and CCR4, whereas the increased mRNA levels of MIP-1beta, RANTES, TARC and CCR6 were unaffected. Second, to investigate which chemokines and receptors were up-regulated during the inductive phase of colitis, we employed the CD4+CD45RBhigh T cell transfer model. At 4 and 8 weeks after reconstitution of Rag-2-/- mice the mRNA levels of IP-10, MCP-1, MDC, MIG, TARC, RANTES, CCR4 and CCR5 were significantly increased prior to the appearance of macroscopic lesions. Other chemokines and chemokine receptors were clearly associated with the acute phase of the disease when lesions were evident. The sum of our studies with these two models identifies chemokines that are expressed at constant levels, irrespective of inflammatory responses, and those that are specifically associated with acute and/or chronic stages of Th1-driven colitis. |
| Databáze: | OpenAIRE |
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