PMID- 20143464 OWN - NLM STAT- MEDLINE DCOM- 20100504 LR - 20211020 IS - 2219-2840 (Electronic) IS - 1007-9327 (Print) IS - 1007-9327 (Linking) VI - 16 IP - 7 DP - 2010 Feb 21 TI - MicroRNA155 is induced in activated CD4(+) T cells of TNBS-induced colitis in mice. PG - 854-61 AB - AIM: To investigate the expression of microRNA155 (miRNA155) in trinitrobenzene sulphonic acid (TNBS)-induced colitis and the relationship between miRNA155 and tumor necrosis factor (TNF) expressions. METHODS: In TNBS colitis mice, miRNA155 and TNF mRNA expressions were measured in colons and CD4(+) T cells of draining lymph nodes (LNs). CD4(+) T cells were cultured in vitro with or without anti-CD3/CD28 antibody, and the expressions of miRNA155 and TNF mRNA in cells and TNF concentration in culture media were examined. RESULTS: miRNA155 and TNF mRNA expressions in colons and in cells of LNs were significantly increased in TNBS colitis compared with controls. In TNBS colitis, miRNA155 and TNF mRNA expressions in CD4(+) T cells of LNs and TNF concentration in CD4(+) T cells culture media increased compared with controls. When cultured with anti-CD3/CD28 antibody, miRNA155 and TNF mRNA expressions in CD4(+) T cells and TNF concentration in the CD4(+) T cells culture media were significantly higher than those cultured without anti-CD3/CD28 antibody. Following analysis using the Pearson's correlation coefficient, miRNA155 expression had a significant positive correlation with either TNF mRNA expression in CD4(+) T cells (r = 0.860, P < 0.05) or TNF concentration in CD4(+) T cells culture media (r = 0.892, P < 0.05). CONCLUSION: miRNA155 is induced in colons and activated CD4(+) T cells in TNBS colitis, and the levels of miRNA155 and TNF expressions have a significant positive correlation. FAU - Chen, Da-Fan AU - Chen DF AD - Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Second Road, Shanghai 200025, China. FAU - Gong, Bang-Dong AU - Gong BD FAU - Xie, Qing AU - Xie Q FAU - Ben, Qi-Wen AU - Ben QW FAU - Liu, Jun AU - Liu J FAU - Yuan, Yao-Zong AU - Yuan YZ LA - eng PT - Journal Article PL - United States TA - World J Gastroenterol JT - World journal of gastroenterology JID - 100883448 RN - 0 (MicroRNAs) RN - 0 (Mirn155 microRNA, mouse) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 8T3HQG2ZC4 (Trinitrobenzenesulfonic Acid) SB - IM MH - Animals MH - CD4-Positive T-Lymphocytes/immunology/*metabolism MH - Cells, Cultured MH - Colitis/chemically induced/*genetics/immunology MH - Colon/immunology/*metabolism MH - Disease Models, Animal MH - Female MH - Lymph Nodes/immunology/*metabolism MH - Lymphocyte Activation/*genetics MH - Mice MH - Mice, Inbred BALB C MH - MicroRNAs/*metabolism MH - RNA, Messenger/metabolism MH - Trinitrobenzenesulfonic Acid MH - Tumor Necrosis Factor-alpha/genetics/metabolism MH - Up-Regulation PMC - PMC2825332 EDAT- 2010/02/10 06:00 MHDA- 2010/05/05 06:00 PMCR- 2010/02/21 CRDT- 2010/02/10 06:00 PHST- 2010/02/10 06:00 [entrez] PHST- 2010/02/10 06:00 [pubmed] PHST- 2010/05/05 06:00 [medline] PHST- 2010/02/21 00:00 [pmc-release] AID - 10.3748/wjg.v16.i7.854 [doi] PST - ppublish SO - World J Gastroenterol. 2010 Feb 21;16(7):854-61. doi: 10.3748/wjg.v16.i7.854.