PMID- 9462212 OWN - NLM STAT- MEDLINE DCOM- 19980219 LR - 20190501 IS - 0017-5749 (Print) IS - 1458-3288 (Electronic) IS - 0017-5749 (Linking) VI - 41 IP - 6 DP - 1997 Dec TI - Cytokine mRNA expression in intestinal tissue of interleukin-2 deficient mice with bowel inflammation. PG - 793-800 AB - BACKGROUND: Mice deficient in interleukin-2 (IL-2) develop inflammatory bowel disease resembling ulcerative colitis in humans. Recent studies provided evidence that alpha beta T cells, particularly CD4 T cells, rather than B cells, are involved in the pathogenesis of bowel inflammation of IL-2 deficient mice. AIM: To analyse the pattern of expression of cytokine mRNA in intestinal tissue of normal and IL-2 deficient mice. METHODS: Expression of beta-actin, IL-1 alpha, IL-1 beta, IL-6, IL-10, tumour necrosis factor alpha (TNF-alpha), interferon gamma (IFN-gamma) and transforming growth factor beta 1 (TGF-beta 1) mRNA was analysed in colon and small intestinal tissue of both IL-2 deficient (IL-2-/-) mice and normal (wild type) litter mates (IL-2+/+) at different ages by using qualitative, as well as semiquantitative, competitive reverse transcription polymerase chain reaction (RT-PCR). Results were correlated with the phase of progression of the disease, as determined by histology. RESULTS: IL-2-/- mice had expressed low levels of IL-1 alpha, IL-1 beta, IL-6, TNF-alpha, and IFN-gamma mRNA in the colon by 1.5 weeks of age. In advance of the development of histologically and clinically detectable bowel inflammation, expression of IL-1 alpha, IL-1 beta, IL-6, TNF-alpha, IFN-gamma, and IL-10, but not TGF-beta 1, mRNA increased in the colon of IL-2 deficient mice. In contrast, IL-2+/+ mice expressed TGF-beta 1 mRNA in colon tissue at 13 and 23 weeks of age, but not IL-1 alpha, IL-1 beta, IL-6, TNF-alpha, IL-10, or IFN-gamma mRNA. Levels of expression of cytokine mRNA in tissue from the small intestine were comparable in IL-2-/- and IL-2+/+ mice. CONCLUSIONS: Bowel inflammation in IL-2 deficient mice is preceded by an increase in IL-1 alpha, IL-1 beta, TNF-alpha, and IFN-gamma mRNA expression in colon tissue. Low levels of TGF-beta 1, but high levels of IL-1 alpha, IL-1 beta, IL-6, TNF-alpha, IFN-gamma, and IL-10 mRNA expression correlate with the manifestation of severe colitis, and suggest that T cells and macrophages are involved in bowel inflammation of IL-2 deficient mice. FAU - Autenrieth, I B AU - Autenrieth IB AD - Max v. Pettenkofer Institut fur Hygiene und Medizinische Mikrobiologie, Ludwig Maximilians Universitat, Munchen, Germany. FAU - Bucheler, N AU - Bucheler N FAU - Bohn, E AU - Bohn E FAU - Heinze, G AU - Heinze G FAU - Horak, I AU - Horak I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Gut JT - Gut JID - 2985108R RN - 0 (Actins) RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Interleukin-2) RN - 0 (Interleukin-6) RN - 0 (RNA, Messenger) RN - 0 (Transforming Growth Factor beta) RN - 0 (Tumor Necrosis Factor-alpha) RN - 130068-27-8 (Interleukin-10) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Actins/genetics MH - Animals MH - Colon/immunology MH - Cytokines/genetics/*metabolism MH - Gene Expression MH - Inflammatory Bowel Diseases/*immunology/metabolism MH - Interferon-gamma/genetics MH - Interleukin-1/genetics MH - Interleukin-10/genetics MH - Interleukin-2/*deficiency MH - Interleukin-6/genetics MH - Intestinal Mucosa/metabolism MH - Intestine, Small/immunology MH - Intestines/*immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Mutant Strains MH - Polymerase Chain Reaction MH - RNA, Messenger/analysis/*metabolism MH - Transforming Growth Factor beta/genetics MH - Tumor Necrosis Factor-alpha/genetics PMC - PMC1891612 EDAT- 1998/02/14 00:00 MHDA- 1998/02/14 00:01 PMCR- 2000/12/01 CRDT- 1998/02/14 00:00 PHST- 1998/02/14 00:00 [pubmed] PHST- 1998/02/14 00:01 [medline] PHST- 1998/02/14 00:00 [entrez] PHST- 2000/12/01 00:00 [pmc-release] AID - 10.1136/gut.41.6.793 [doi] PST - ppublish SO - Gut. 1997 Dec;41(6):793-800. doi: 10.1136/gut.41.6.793.