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Journal of Interferon & Cytokine ResearchVol. 38, No. 7 Research Reports
Differential Expression of Immune Inhibitory Checkpoint Signatures on Antiviral and Inflammatory T Cell Populations in Chronic Hepatitis B
Helen Cooksley
, Antonio Riva
, Krum Katzarov
, Tanya Hadzhiolova-Lebeau
, Slava Pavlova
, Marieta Simonova
, Roger Williams
, and Shilpa Chokshi
Published Online:1 Jul 2018
Abstract
Virus-specific T cells are critical in mediating the pathogenesis of hepatitis B virus (HBV) infection. Interferon gamma (IFNγ)-producing T cells are associated with resolution; in contrast, interleukin-17 (IL-17)-producing T cells are linked to exacerbation of liver inflammation and injury. Checkpoint receptors stringently regulate T cell functions, with their expression profiles varying on different T cell subsets. Blockade of checkpoint receptors may be an effective therapeutic strategy for chronic hepatitis B (CHB); however, blockade may also inadvertently exacerbate proinflammatory responses. In this study, we sought to determine the balance of inflammatory and antiviral T cells and determine their inhibitory receptor profile. The frequency of total and HBV antigen-specific Th17 and Tc17 cells was higher in CHB patients compared with healthy controls (HCs). Th17 and Tc17 cells in CHB patients had significantly lower expression of T cell immunoglobulin and mucin domain protein-3 (TIM-3) compared with HCs, with no difference in programmed death-1 (PD-1) or CD244 expression. Conversely, Th1 and Tc1 cells in CHB patients hyperexpressed PD-1 and CD244, while TIM-3 expression was comparable in both cohorts. During CHB, antiviral IFNγ T cells hyperexpress multiple immune inhibitory receptors driving their functional impairment. In contrast, inflammatory Th17/Tc17 cells hypoexpress TIM-3, but not PD-1 or CD244. Checkpoint inhibitors for CHB should target PD-1 or CD244 to allow restoration of IFNγ responses without affecting inflammatory IL-17 production.
Journal of Interferon & Cytokine Research cover image
Volume 38Issue 7
Jul 2018
Information
Copyright 2018, Mary Ann Liebert, Inc.
To cite this article:
Helen Cooksley, Antonio Riva, Krum Katzarov, Tanya Hadzhiolova-Lebeau, Slava Pavlova, Marieta Simonova, Roger Williams, and Shilpa Chokshi.Journal of Interferon & Cytokine Research.Jul 2018.ahead of printhttp://doi.org/10.1089/jir.2017.0109
Published in Volume: 38 Issue 7: July 1, 2018
Keywords
hepatitis B virus (HBV)immune regulationinterferon gamma (IFNγ)interleukin-17 (IL-17)programmed death-1 (PD-1)T cell immunoglobulin domain and mucin domain-3 (TIM-3)checkpoint receptor inhibition
Publication History
Received 26 September 2017
Accepted 14 May 2018
Published online 1 July 2018
Published in print 1 July 2018
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