PMID- 7806062 OWN - NLM STAT- MEDLINE DCOM- 19950201 LR - 20220408 IS - 0016-5085 (Print) IS - 0016-5085 (Linking) VI - 108 IP - 1 DP - 1995 Jan TI - Monocyte-chemoattractant protein 1 gene expression in intestinal epithelial cells and inflammatory bowel disease mucosa. PG - 40-50 AB - BACKGROUND: Monocyte-chemoattractant protein 1 (MCP-1) activates macrophages and increases the migration of monocytes into tissue during inflammation. It was hypothesized that MCP-1 expression is involved in intestinal inflammation. METHODS: MCP-1 protein was detected by immunohistochemistry and immunoprecipitation. Biological activity of MCP-1 was assessed using a chemotactic assay. MCP-1 messenger RNA (mRNA) levels were measured by quantitative reverse-transcription polymerase chain reaction. RESULTS: In normal mucosa, MCP-1 was predominantly present in surface epithelium. In contrast, inflamed mucosa from patients with ulcerative colitis or Crohn's disease contained multiple cells immunoreactive for MCP-1, including spindle cells, mononuclear cells, and endothelial cells. Furthermore, MCP-1 mRNA expression was markedly increased in inflamed intestinal biopsy specimens from patients with inflammatory bowel disease. MCP-1 was detected in isolated intestinal epithelial cells and in conditioned media from Caco-2 cells. Caco-2 cell-conditioned media stimulated monocyte chemotaxis activity that was inhibited by anti-MCP-1 antibodies. Constituitive MCP-1 mRNA levels in Caco-2 cells were up-regulated by interleukin 1 beta and down-regulated by dexamethasone. CONCLUSIONS: In addition to lamina propria macrophages, endothelial cells, and spindle cells, intestinal epithelial cells are able to produce MCP-1. MCP-1 is expressed constitutively in the intestinal colonic mucosa and is up-regulated during inflammation. FAU - Reinecker, H C AU - Reinecker HC AD - Division of Gastroenterology, University of Pennsylvania Medical Center, Philadelphia. FAU - Loh, E Y AU - Loh EY FAU - Ringler, D J AU - Ringler DJ FAU - Mehta, A AU - Mehta A FAU - Rombeau, J L AU - Rombeau JL FAU - MacDermott, R P AU - MacDermott RP LA - eng GR - DK-21474/DK/NIDDK NIH HHS/United States GR - DK-43351/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Gastroenterology JT - Gastroenterology JID - 0374630 RN - 0 (Chemokine CCL2) RN - 0 (Chemotactic Factors) RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Molecular Probes) RN - 0 (RNA, Messenger) RN - NI40JAQ945 (Tetradecanoylphorbol Acetate) SB - IM MH - Base Sequence MH - Chemokine CCL2 MH - Chemotactic Factors/*genetics/metabolism MH - Colon/metabolism MH - Cytokines/genetics/metabolism MH - Enteritis/metabolism MH - *Gene Expression MH - Humans MH - Inflammatory Bowel Diseases/*genetics/pathology MH - Interleukin-1/pharmacology MH - Intestinal Mucosa/pathology/*physiopathology MH - Molecular Probes/genetics MH - Molecular Sequence Data MH - Neoplasms, Glandular and Epithelial/metabolism/pathology MH - RNA, Messenger/metabolism MH - Tetradecanoylphorbol Acetate/pharmacology MH - Tumor Cells, Cultured EDAT- 1995/01/01 00:00 MHDA- 1995/01/01 00:01 CRDT- 1995/01/01 00:00 PHST- 1995/01/01 00:00 [pubmed] PHST- 1995/01/01 00:01 [medline] PHST- 1995/01/01 00:00 [entrez] AID - 0016-5085(95)90006-3 [pii] AID - 10.1016/0016-5085(95)90006-3 [doi] PST - ppublish SO - Gastroenterology. 1995 Jan;108(1):40-50. doi: 10.1016/0016-5085(95)90006-3.