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Cited by 371

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Upregulation of PD-1 Expression on Circulating and Intrahepatic Hepatitis C Virus-Specific CD8+T Cells Associated with Reversible Immune Dysfunction

Open access
Golden-Mason, Lucy, Palmer, Brent, Klarquist, Jared, Mengshol, John A., Castelblanco, Nicole, Rosen, Hugo R.·2007·Journal of Virology

Abstract

Infection with hepatitis C virus (HCV) is associated with persistence in the majority of individuals. We demonstrate here that the inhibitory molecule programmed death-1 (PD-1) is significantly upregulated on total and HCV-specific CD8+cytotoxic T lymphocytes (CTLs) in the peripheral blood and livers of patients with chronic infection compared to subjects with spontaneous HCV resolution, patients with nonviral liver disease, and normal controls. PD-1 expression on cytomegalovirus-specific CTLs also varies according to HCV status and is highest in patients with chronic infection. HCV-specific CTLs that are PD-1 high express higher levels of the senescence marker CD57 than PD-1 low CTLs, and CD57 expression is greater in chronic than in resolved infection. In vitro blockade of PD-1 by monoclonal antibodies specific to its ligands (PD-L1 and PD-L2) results in restoration of functional competence (proliferation and gamma interferon and interleukin-2 secretion) of HCV-specific CTLs, including those residing in the liver. This reversal of CTL exhaustion is evident even in individuals who lack HCV-specific CD4+T-cell help. Our data indicate that the PD-1/PD-L pathway is critical in persistent HCV infection in humans and represents a potential novel target for restoring function of exhausted HCV-specific CTLs.

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Metadata

Authors
Golden-Mason, L., Palmer, B., Klarquist, J., Mengshol, J. A., Castelblanco, N., & Rosen, H. R.
Venue
Journal of Virology
Published
2007-09
Volume
81
Issue
17
Pages
9249-9258
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2151712474
Cited by
371
References
34
FWCI
20.86
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Upregulation of PD-1 Expression on Circulating and Intrahepatic Hepatitis C Virus-Specific CD8+T Cells Associated with Reversible Immune Dysfunction. https://app.cochat.ai/papers/10.1128/jvi.00409-07
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Golden-Mason, L., Palmer, B., Klarquist, J., Mengshol, J. A., Castelblanco, N., & Rosen, H. R. (2007). Upregulation of PD-1 Expression on Circulating and Intrahepatic Hepatitis C Virus-Specific CD8+T Cells Associated with Reversible Immune Dysfunction. Journal of Virology. https://doi.org/10.1128/jvi.00409-07

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