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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Issue 12
Dec.  2017
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Article Contents

The role of interleukin-21 in hepatitis B virus infection

DOI: 10.3969/j.issn.1001-5256.2017.12.038
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  • Received Date: 2017-06-26
  • Published Date: 2017-12-20
  • Interleukin-21 ( IL-21) is a cytokine produced by activated CD4+T cells and can affect the function of various lymphocytes. It should be noted that IL-21-mediated cellular and humoral immune responses play an important role in determining the outcome of viral infection. This article introduces the research advances in the important role of IL-21 in hepatitis B virus ( HBV) infection. IL-21 secreted by virus-specific CD4+T cells plays key roles in sustaining CD8+T lymphocyte response and promoting B-lymphocyte response, which is vital for effective viral control. However, as an inflammatory mediator, IL-21 is also involved in the development of hepatitis B-related liver cirrhosis and aggravation of liver injury. Therefore, IL-21 is considered as an immunoregulatory cytokine in HBV infection. Immunotherapeutic strategies aim at optimizing the beneficial effects of IL-21 in HBV infection, which may be a serious challenge in the future.

     

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