PMID- 21527401 OWN - NLM STAT- MEDLINE DCOM- 20111013 LR - 20110721 IS - 1472-4146 (Electronic) IS - 0021-9746 (Linking) VI - 64 IP - 8 DP - 2011 Aug TI - Monocyte chemoattractant protein-1 derived from biliary innate immunity contributes to hepatic fibrogenesis. PG - 660-5 LID - 10.1136/jclinpath-2011-200040 [doi] AB - AIMS: Monocyte chemoattractant protein-1 (MCP-1) is a major chemotactic factor for hepatic stellate cells (HSCs) associated with hepatic fibrosis. In this study, among several fibrogenetic factors derived from biliary epithelial cells (BECs), MCP-1 produced by the biliary innate immune system was found to be most critical in the histogenesis of hepatic fibrogenesis. METHODS: Using cultured human BECs, the expression of five fibrogenetic factors including MCP-1 on stimulation with Toll-like receptor ligands, inflammatory cytokines or bile acids was examined. Moreover, in situ detection of MCP-1 and alpha-smooth muscle actin proteins was performed using sections from normal and diseased livers by immunohistochemistry. RESULTS: All fibrogenetic factors were detected in BECs, but only MCP-1 expression was upregulated, by all the Toll-like receptor ligands, IL-1beta, and tumour necrosis factor-alpha. Proliferating bile ductules in interface areas expressed MCP-1 in diseased livers accompanying alpha-smooth muscle actin-positive activated HSCs. CONCLUSIONS: Bile ductules proliferate in various hepatobiliary diseases, and its significance is still unknown. This study demonstrated that BECs in bile ductules could produce MCP-1, particularly, via biliary innate immunity, suggesting that MCP-1 derived from BECs plays an important role in the recruitment of HSCs to interface areas and the activation of HSCs resulting in the progression of periportal fibrosis. FAU - Harada, Kenichi AU - Harada K AD - Department of Human Pathology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan. kenichih@med.kanazawa-u.ac.jp FAU - Chiba, Mayumi AU - Chiba M FAU - Okamura, Atsushi AU - Okamura A FAU - Hsu, Maylee AU - Hsu M FAU - Sato, Yasunori AU - Sato Y FAU - Igarashi, Saya AU - Igarashi S FAU - Ren, Xiang Shan AU - Ren XS FAU - Ikeda, Hiroko AU - Ikeda H FAU - Ohta, Hajime AU - Ohta H FAU - Kasashima, Satomi AU - Kasashima S FAU - Kawashima, Atsuhiro AU - Kawashima A FAU - Nakanuma, Yasuni AU - Nakanuma Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110427 PL - England TA - J Clin Pathol JT - Journal of clinical pathology JID - 0376601 RN - 0 (Bile Acids and Salts) RN - 0 (CCR2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (RNA, Messenger) RN - 0 (Receptors, CCR2) RN - 0 (Toll-Like Receptors) SB - IM MH - Bile Acids and Salts/pharmacology MH - Bile Ducts, Intrahepatic/*immunology MH - Cells, Cultured MH - Chemokine CCL2/biosynthesis/*immunology/metabolism MH - Cytokines/pharmacology MH - Enzyme-Linked Immunosorbent Assay MH - Epithelial Cells/immunology MH - Humans MH - Immunity, Innate/*immunology MH - Immunohistochemistry MH - Liver Cirrhosis/*immunology MH - RNA, Messenger/metabolism MH - Receptors, CCR2/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Toll-Like Receptors/physiology EDAT- 2011/04/30 06:00 MHDA- 2011/10/14 06:00 CRDT- 2011/04/30 06:00 PHST- 2011/04/30 06:00 [entrez] PHST- 2011/04/30 06:00 [pubmed] PHST- 2011/10/14 06:00 [medline] AID - jclinpath-2011-200040 [pii] AID - 10.1136/jclinpath-2011-200040 [doi] PST - ppublish SO - J Clin Pathol. 2011 Aug;64(8):660-5. doi: 10.1136/jclinpath-2011-200040. Epub 2011 Apr 27.