PMID- 31102558 OWN - NLM STAT- MEDLINE DCOM- 20200520 LR - 20201001 IS - 1365-2249 (Electronic) IS - 0009-9104 (Print) IS - 0009-9104 (Linking) VI - 198 IP - 1 DP - 2019 Oct TI - IL-17 and TNF-alpha co-operation contributes to the proinflammatory response of hepatic stellate cells. PG - 111-120 LID - 10.1111/cei.13316 [doi] AB - Hepatic stellate cells (HSCs) have a central role in liver inflammation and fibrosis by producing inflammatory and fibrotic mediators. Their activation is regulated through direct cell-cell interactions, but also through systemic and local effects of soluble factors such as cytokines. The effects of the proinflammatory cytokines interleukin (IL)-17 and tumor necrosis factor (TNF)-alpha and cell interactions with hepatocytes on HSC activation were assessed. Human HSC and HepaRG cells were exposed to IL-17 and/or TNF-alpha. IL-17 and TNF-alpha contribution from immune cells was determined in a co-culture model with phytohemagglutinin (PHA)-activated peripheral blood mononuclear cells (PBMC), HSC and/or hepatocytes. IL-17 enhanced TNF-alpha effects on the induction of IL-6, IL-1beta, and the chemokine IL-8, chemokine (C-C motif) ligand 20 (CCL20) and monocyte chemoattractant protein-1 (MCP-1) expression/secretion in isolated HSC cultures. HSC-hepatocyte interactions did not enhance IL-6, IL-8 and CCL20 production compared to hepatocyte alone. However, HSC-hepatocyte interactions increased C-reactive protein expression. IL-17 and/or TNF-alpha had no direct profibrotic effects on collagen 1 alpha1, tissue inhibitor of matrix metalloproteinase (TIMP) and matrix metalloproteinase (MMP) 2 gene expression, whereas mRNA levels of MMP3, an enzyme involved in matrix destruction, were up-regulated in HSCs. The use of specific inhibitors of IL-17 and TNF-alpha indicated their contribution to the strong increase of IL-6 and IL-8 production induced by PBMC, HSC and/or hepatocyte interactions. As chronic liver inflammation leads to liver fibrosis, IL-17 and/or TNF-alpha neutralization can be of interest to control liver inflammation and therefore its effects on fibrosis. CI - (c) 2019 British Society for Immunology. FAU - Beringer, A AU - Beringer A AD - Immunogenomics and Inflammation research Unit EA 4130, University of Lyon, Lyon, France. AD - Department of Clinical Immunology and Rheumatology, Hospices Civils de Lyon, Lyon, France. FAU - Miossec, P AU - Miossec P AUID- ORCID: 0000-0002-3280-6346 AD - Immunogenomics and Inflammation research Unit EA 4130, University of Lyon, Lyon, France. AD - Department of Clinical Immunology and Rheumatology, Hospices Civils de Lyon, Lyon, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190606 PL - England TA - Clin Exp Immunol JT - Clinical and experimental immunology JID - 0057202 RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL20) RN - 0 (Collagen Type I) RN - 0 (Cytokines) RN - 0 (Interleukin-17) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Chemokine CCL20/metabolism MH - Collagen Type I/metabolism MH - Cytokines/metabolism MH - Hepatic Stellate Cells/*metabolism MH - Hepatocytes/metabolism MH - Humans MH - Inflammation/*metabolism MH - Interleukin-17/*metabolism MH - Leukocytes, Mononuclear/metabolism MH - Liver/metabolism MH - Liver Cirrhosis/metabolism MH - Tissue Inhibitor of Metalloproteinase-1/metabolism MH - Tumor Necrosis Factor-alpha/*metabolism PMC - PMC6718275 OTO - NOTNLM OT - cell interactions OT - hepatic stellate cells OT - inflammation OT - interleukin-17 OT - tumor necrosis factor-alpha COIS- None. EDAT- 2019/05/19 06:00 MHDA- 2020/05/21 06:00 PMCR- 2020/10/01 CRDT- 2019/05/19 06:00 PHST- 2019/05/13 00:00 [accepted] PHST- 2019/05/19 06:00 [pubmed] PHST- 2020/05/21 06:00 [medline] PHST- 2019/05/19 06:00 [entrez] PHST- 2020/10/01 00:00 [pmc-release] AID - CEI13316 [pii] AID - 10.1111/cei.13316 [doi] PST - ppublish SO - Clin Exp Immunol. 2019 Oct;198(1):111-120. doi: 10.1111/cei.13316. Epub 2019 Jun 6.