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Published in: BMC Immunology 1/2011

Open Access 01-12-2011 | Research article

Activated IL-23/IL-17 pathway closely correlates with increased Foxp3 expression in livers of chronic hepatitis B patients

Authors: Qinghong Wang, Yanhua Zheng, Zemin Huang, Yi Tian, Jijun Zhou, Qing Mao, Yuzhang Wu, Bing Ni

Published in: BMC Immunology | Issue 1/2011

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Abstract

Background

Foxp3 protein plays a critical role in mediating the inflammatory response and can inhibit the proinflammatory IL-23/IL-17 pathway. However, the molecular interplay of Foxp3 and the IL-23/IL-17 pathway in patients with chronic hepatitis B (CHB) remains unclear. To this end, we analyzed the expression patterns of Foxp3- and IL-23/IL-17 pathway-related proinflammatory cytokines in 39 patients with acute-on-chronic liver failure, 71 patients with CHB and 32 healthy controls.

Results

Foxp3 expression was found to be elevated in and mainly expressed by the CD4+ T cell sub-population of peripheral blood mononuclear cells and liver tissues of patients with hepatitis B. The intrahepatic expression of Foxp3 strongly correlated with the copies of HBV DNA and the concentration of surface antigen, HBsAg. IL-23/IL-17 pathway-related proinflammatory cytokines were also found to be significantly increased in patients' liver tissues, as compared to healthy controls. Moreover, Foxp3 expression was strikingly correlated with the production of these cytokines in liver tissues of CHB patients.

Conclusions

The closely-correlated increase of Foxp3 and IL-23/IL-17 pathway activity in HBV-infected livers suggests that the proinflammatory IL-23/IL-17 pathway had not been effectively suppressed by the host immune machinery, such as Treg (Foxp3) cells. Constitutive activation of the IL-23/17 pathway, thus, may support the chronic hepatitis B state.
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Metadata
Title
Activated IL-23/IL-17 pathway closely correlates with increased Foxp3 expression in livers of chronic hepatitis B patients
Authors
Qinghong Wang
Yanhua Zheng
Zemin Huang
Yi Tian
Jijun Zhou
Qing Mao
Yuzhang Wu
Bing Ni
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Immunology / Issue 1/2011
Electronic ISSN: 1471-2172
DOI
https://doi.org/10.1186/1471-2172-12-25

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