Cited by 90Liver physiology and pathologyT-cell and B-cell ImmunologyImmunotherapy and Immune Responses

Murine hepatic stellate cells veto CD8 T cell activation by a CD54-dependent mechanism

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Schildberg, Frank A., Wojtalla, Alexandra, Siegmund, Sören V., Endl, Elmar, Diehl, Linda, Abdullah, Zeinab, Kurts, Christian, Knolle, Percy A.·2011·Hepatology

Abstract

The liver has a role in T cell tolerance induction, which is mainly achieved through the functions of tolerogenic hepatic antigen-presenting cells (APCs) and regulatory T cells. Hepatic stellate cells (HSCs) are known to have various immune functions, which range from immunogenic antigen presentation to the induction of T cell apoptosis. Here we report a novel role for stellate cells in vetoing the priming of naive CD8 T cells. Murine and human HSCs and stromal cells (but not hepatocytes) prevented the activation of naive T cells by dendritic cells, artificial APCs, and phorbol 12-myristate 13-acetate/ionomycin by a cell contact–dependent mechanism. The veto function for inhibiting T cell activation was directly correlated with the activation state of HSCs and was most pronounced in HSCs from fibrotic livers. Mechanistically, high expression levels of CD54 simultaneously restricted the expression of interleukin-2 (IL-2) receptor and IL-2 in T cells, and this was responsible for the inhibitory effect because exogenous IL-2 overcame the HSC veto function. Conclusion: Our results demonstrate a novel function of HSCs in the local skewing of immune responses in the liver through the prevention of local stimulation of naive T cells. These results not only indicate a beneficial role in hepatic fibrosis, for which increased CD54 expression on HSCs could attenuate further T cell activation, but also identify IL-2 as a key cytokine in mediating local T cell immunity to overcome hepatic tolerance. (HEPATOLOGY 2011;)

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  1. Kamada N, Brons G, Davies HS. Fully allogeneic liver grafting in rats induces nonreactivity to transplantation antigens. Transplantation 1980; 29:429-431.
  2. Inobe J, Slavin AJ, Komagata Y, Chen Y, Liu L, Weiner HL. IL-4 is a differentiation factor for TGFb secreting Th3 cells and IL-4 enhances oral tolerance in EAE. Eur J Immunol 1998;28:2780-2790.

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Authors
Schildberg, F. A., Wojtalla, A., Siegmund, S. V., Endl, E., Diehl, L., Abdullah, Z., Kurts, C., & Knolle, P. A.
Affiliations
University of Bonn (DE)
Corresponding author
Knolle, Percy A.
Venue
Hepatology
Published
2011-07
Volume
54
Issue
1
Pages
262-272
ISSN
0270-9139 (ISSN-L)
OpenAlex
W1985761442
Cited by
90
References
37
Citations by year
2025: 9 · 2024: 4 · 2023: 2 · 2022: 4 · 2021: 6 · 2020: 8 · 2019: 4 · 2018: 4 · 2017: 5 · 2016: 7 · 2015: 6 · 2014: 10 · 2013: 10 · 2012: 6
FWCI
6.29
Type
journal article
Language
en
Open access
Locations
  • Hepatology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (SFBTR57, SFB 704)
  • Studienstiftung des Deutschen Volkes
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
hepatic stellate cells, CD8+ T cell activation, ICAM-1, interleukin-2, interleukin-2 receptor, T cell tolerance, liver fibrosis, dendritic cells, antigen-presenting cells, T cell activation inhibition
MeSH terms
Animals, Antigen-Presenting Cells, Cell Communication, Cell Line, Cells, Cultured, Dendritic Cells, Disease Models, Animal, Humans, Interleukin-2, Liver Cirrhosis, Mice, Inbred BALB C, Mice, Inbred C57BL, Apoptosis, Mice, Knockout, CD8-Positive T-Lymphocytes, Intercellular Adhesion Molecule-1, Models, Animal, T-Lymphocytes, Regulatory, Mice, Hepatic Stellate Cells

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