Cited by 197Liver physiology and pathologyLiver Disease Diagnosis and TreatmentLiver Diseases and Immunity

Cultured Human Liver Fat-Storing Cells Produce Monocyte Chemotactic Protein-1. Regulation by Proinflammatory Cytokines

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Marra, F, Valente, A J, Pinzani, M, Abboud, H E·1993·Journal of Clinical Investigation

Abstract

Monocytes infiltrate the portal space during chronic liver inflammation. Monocyte chemotactic protein-1 (MCP-1) is a cytokine that induces monocyte chemotaxis and activation. We investigated if human liver fat-storing cells (FSC) secrete MCP-1, and the mechanisms that regulate MCP-1 production. Unstimulated FSC secrete MCP-1 as measured by radioimmunoassay as well as a chemotactic assay and express mRNA that encodes for this cytokine. A two- to threefold increase in MCP-1 secretion was observed when FSC were treated with either interleukin-1 alpha (IL-1 alpha) or interferon-gamma (IFN-gamma). Tumor necrosis factor-alpha (TNF alpha) also increased MCP-1 secretion, although to a lesser extent (1.6-fold). Northern blot analysis showed that IL-1 alpha and IFN-gamma strongly increase the levels of mRNA that encodes for MCP-1, whereas TNF alpha appears to be a weaker stimulus. Analysis of FSC-conditioned medium by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoblotting revealed three bands of MCP-1 that most likely represent isoforms of different apparent molecular weights. Pretreatment of FSC with H-7, a protein kinase C inhibitor, blocked cytokine-induced increase in both MCP-1 gene expression and secretion. To determine the potential role of MCP-1 in vivo, we also analyzed normal and pathologic human liver tissue. Northern blot analysis showed that MCP-1 mRNA expression is more abundant in liver tissue obtained from patients with chronic active hepatitis compared with normal liver tissue. These studies indicate that MCP-1 secreted by FSC is stimulated by proinflammatory cytokines and that MCP-1 gene expression is upregulated in chronic inflammatory liver disease. MCP-1 released by FSC may participate in the recruitment and activation of monocytes at sites of liver injury.

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  • Activated HSCs recruit immune cells by secreting chemokines including MCP-1, IL-8, RANTES, CCR5, and SDF-1/CXCL-12 and express adhesion molecules ICAM-1 and VCAM-1 that promote infiltration of leukocytes and macrophages.

    “Activated HSCs recruit immune cells by secreting numerous chemokines including monocyte chemoattractant protein-1 (MCP-1) (34), IL-8 (35), RANTES and CCR5 (36), and SDF-1/CXCL-12 (37) and express adhesion molecules, ICAM-1 and VCAM-1, that promote the infiltration of leukocytes and macrophages (38, 39).”

    From Hepatic Stellate Cell-Immune Interactions in NASH (2022) · cites this paper as [34]

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  1. Perrillo, R. P. 1992. Chronic hepatitis. In Diseases of the Liver and the Biliary Tract. G. Gitnick, D. R. LaBrecque, and F. G. Moody, editors. Mosby- Year Book, Inc., St. Louis. 299-3 10.

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Authors
Marra, F., Valente, A. J., Pinzani, M., & Abboud, H. E.
Affiliations
  • The University of Texas at San Antonio Health Science Center (US)
  • University of Florence (IT)
Venue
Journal of Clinical Investigation
Published
1993-10-01
Volume
92
Issue
4
Pages
1674-1680
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2062874643
Cited by
197
References
39
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 1 · 2020: 5 · 2019: 4 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 9 · 2014: 4 · 2013: 4 · 2012: 7
FWCI
6.71
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Florence Research (University of Florence) (submittedVersion)
Funders
  • National Institutes of Health (5r01dk043988-09, 33665, 5p01hl026890-10)
  • National Heart, Lung, and Blood Institute (HL-26890)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK43988, DK-33665)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
Keywords
MCP-1, hepatocytes, inflammatory cytokines, interleukin-1 alpha, interferon-gamma, TNF-α, protein kinase C, chronic active hepatitis, monocyte recruitment, chronic liver inflammation, MCP-1 gene expression
MeSH terms
Cells, Cultured, Chemotactic Factors, Electrophoresis, Polyacrylamide Gel, Humans, Inflammation, Interferon-gamma, Interleukin-1, Isoquinolines, Liver, Molecular Weight, Piperazines, Platelet-Derived Growth Factor, Protein Kinase C, Radioimmunoassay, Recombinant Proteins, RNA, Messenger, Tumor Necrosis Factor-alpha, Blotting, Northern, Gene Expression, Cytokines, Adipocytes, Chemokine CCL2, 1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine, Culture Techniques

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