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Cited by 488

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.

Antiviral Intrahepatic T-Cell Responses Can Be Restored by Blocking Programmed Death-1 Pathway in Chronic Hepatitis B

Open access
Fisicaro, Paola, Valdatta, Caterina, Massari, Marco, Loggi, Elisabetta, Biasini, Elisabetta, Sacchelli, Luca, Cavallo, Maria Cristina, Silini, Enrico M., Andreone, Pietro, Missale, Gabriele, Ferrari, Carlo·2010·Gastroenterology

Abstract

BACKGROUND & AIMS The antiviral function of peripheral hepatitis B virus (HBV)-specific T cells can be increased in patients with chronic hepatitis B by blocking the interaction of programmed death (PD)-1 with its ligand PD-L1. However, no information is available about the effects of this blockade on intrahepatic lymphocytes. We studied T-cell exhaustion and the effects of PD-1/PD-L1 blockade on intrahepatic and circulating HBV-specific T cells in patients with chronic hepatitis B. METHODS A total of 42 patients with chronic HBV infection who underwent liver biopsy were studied. The ex vivo phenotype of peripheral and intrahepatic HBV-specific CD8(+) T cells was assessed by flow cytometry with class I tetramers and antibodies to T-cell differentiation molecules. Functional recovery was evaluated by analyzing expansion and production of interferon (IFN)-gamma and interleukin (IL)-2 after short-term incubation of T cells with HBV peptides in the presence of anti-PD-L1 or control antibodies. RESULTS Intrahepatic HBV-specific CD8(+) cells expressed higher levels of PD-1 and lower levels of CD127 than their peripheral counterparts. Blockade of PD-1/PD-L1 interaction increased CD8(+) cell proliferation and IFN-gamma and IL-2 production by circulating intrahepatic lymphocytes, even though anti-PD-L1 had a stronger effect on intrahepatic compared with peripheral T cells. CONCLUSIONS T-cell exhaustion by high antigen concentrations promotes HBV-specific T-cell dysfunction by affecting phenotype and function of peripheral and intrahepatic T cells. By restoring antiviral T-cell functions, not only in peripheral but also in intrahepatic lymphocytes, anti-PD-L1 might be a good therapeutic candidate for chronic HBV infection.

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Crossref · 10.1053/j.gastro.2009.09.052

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Metadata

Authors
Fisicaro, P., Valdatta, C., Massari, M., Loggi, E., Biasini, E., Sacchelli, L., Cavallo, M. C., Silini, E. M., Andreone, P., Missale, G., & Ferrari, C.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2010-02
Volume
138
Issue
2
Pages
682-693.e4
ISSN
0016-5085 (ISSN-L)
OpenAlex
W1983251878
Cited by
488
References
40
FWCI
10.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Antiviral Intrahepatic T-Cell Responses Can Be Restored by Blocking Programmed Death-1 Pathway in Chronic Hepatitis B. https://app.cochat.ai/papers/10.1053/j.gastro.2009.09.052
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Fisicaro, P., Valdatta, C., Massari, M., Loggi, E., Biasini, E., Sacchelli, L., Cavallo, M. C., Silini, E. M., Andreone, P., Missale, G., & Ferrari, C. (2010). Antiviral Intrahepatic T-Cell Responses Can Be Restored by Blocking Programmed Death-1 Pathway in Chronic Hepatitis B. Gastroenterology. https://doi.org/10.1053/j.gastro.2009.09.052

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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