Cited by 373Hepatitis C virus researchT-cell and B-cell ImmunologyCancer Immunotherapy and Biomarkers

Coexpression of PD-1, 2B4, CD160 and KLRG1 on exhausted HCV-specific CD8+ T cells is linked to antigen recognition and T cell differentiation

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Bengsch, Bertram, Seigel, Bianca, Ruhl, Marianne, Timm, Jörg, Kuntz, Martin, Blum, Hubert E., Pircher, Hanspeter, Thimme, Robert·2010·PLoS Pathogens

Abstract

Exhausted CD8+ T cell responses during chronic viral infections are defined by a complex expression pattern of inhibitory receptors. However, very little information is currently available about the coexpression patterns of these receptors on human virus-specific CD8+ T cells and their correlation with antiviral functions, T cell differentiation and antigen recognition. We addressed these important aspects in a cohort of 38 chronically HCV infected patients and found a coexpression of inhibitory receptors such as 2B4, CD160 and KLRG1 in association with PD-1 in about half of the HCV-specific CD8+ T cell responses. Importantly, this exhaustive phenotype was associated with low and intermediate levels of CD127 expression, an impaired proliferative capacity, an intermediate T cell differentiation stage and absence of sequence variations within the corresponding epitopes, indicating ongoing antigen triggering. In contrast, a low expression of inhibitory receptors by the remaining HCV-specific CD8+ T cells occurred in concert with a CD127hi phenotype, an early T cell differentiation stage and presence of viral sequence variations within the corresponding epitopes. In sum, these results suggest that T cell exhaustion contributes to the failure of about half of HCV-specific CD8+ T cell responses and that it is determined by a complex interplay of immunological (e.g. T cell differentiation) and virological (e.g. ongoing antigen triggering) factors.

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Authors
Bengsch, B., Seigel, B., Ruhl, M., Timm, J., Kuntz, M., Blum, H. E., Pircher, H., & Thimme, R.
Affiliations
  • University of Freiburg (DE)
  • University of Duisburg-Essen (DE)
Corresponding author
Thimme, Robert
Venue
PLoS Pathogens
Published
2010-06-10
Volume
6
Issue
6
Pages
e1000947
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W1975753196
Cited by
373
References
40
Citations by year
2026: 7 · 2025: 5 · 2024: 8 · 2023: 11 · 2022: 17 · 2021: 24 · 2020: 26 · 2019: 23 · 2018: 26 · 2017: 19 · 2016: 18 · 2015: 40 · 2014: 47 · 2013: 32 · 2012: 31
FWCI
20.74
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
Deutsche Forschungsgemeinschaft (GSC‐4, TH-719/3-1, GSC-4/Spemann Graduate School)
Topics
  • Health Sciences › Medicine › Hepatology › Hepatitis C virus research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
T cell exhaustion, inhibitory receptors, PD-1, 2B4, CD160, KLRG1, CD127, T cell differentiation, antigen recognition, chronic hepatitis C
MeSH terms
Signaling Lymphocytic Activation Molecule Family, Cell Differentiation, Flow Cytometry, Hepatitis C, Humans, Lymphocyte Activation, Receptors, Immunologic, T-Lymphocytes, Trans-Activators, Antigens, CD, Hepacivirus, CD8-Positive T-Lymphocytes, Viral Load, Lectins, C-Type, Cell Proliferation, Apoptosis Regulatory Proteins, GPI-Linked Proteins, Programmed Cell Death 1 Receptor

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