Tumor necrosis factor-alpha induced by hepatitis B virus core mediating the immune response for hepatitis B viral clearance in mice model

Persistent hepatitis B viral (HBV) infection results in chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma (HCC). An efficient control of virus infections requires the coordinated actions of both innate and adaptive immune responses. In order to define the role of innate immunity effec...

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Veröffentlicht in:PloS one 2014-07, Vol.9 (7), p.e103008-e103008
Hauptverfasser: Tzeng, Horng-Tay, Tsai, Hwei-Fang, Chyuan, I-Tsu, Liao, Hsiu-Jung, Chen, Chun-Jen, Chen, Pei-Jer, Hsu, Ping-Ning
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container_title PloS one
container_volume 9
creator Tzeng, Horng-Tay
Tsai, Hwei-Fang
Chyuan, I-Tsu
Liao, Hsiu-Jung
Chen, Chun-Jen
Chen, Pei-Jer
Hsu, Ping-Ning
description Persistent hepatitis B viral (HBV) infection results in chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma (HCC). An efficient control of virus infections requires the coordinated actions of both innate and adaptive immune responses. In order to define the role of innate immunity effectors against HBV, viral clearance was studied in a panel of immunodeficient mouse strains by the hydrodynamic injection approach. Our results demonstrate that HBV viral clearance is not changed in IFN-α/β receptor (IFNAR), RIG-I, MDA5, MYD88, NLRP3, ASC, and IL-1R knock-out mice, indicating that these innate immunity effectors are not required for HBV clearance. In contrast, HBV persists in the absence of tumor necrosis factor-alpha (TNF-α) or in mice treated with the soluble TNF receptor blocker, Etanercept. In these mice, there was an increase in PD-1-expressing CD8+ T-cells and an increase of serum HBV DNA, HBV core, and surface antigen expression as well as viral replication within the liver. Furthermore, the induction of TNF-α in clearing HBV is dependent on the HBV core, and TNF blockage eliminated HBV core-induced viral clearance effects. Finally, the intra-hepatic leukocytes (IHLs), but not the hepatocytes, are the cell source responsible for TNF-α production induced by HBcAg. These results provide evidences for TNF-α mediated innate immune mechanisms in HBV clearance and explain the mechanism of HBV reactivation during therapy with TNF blockage agents.
doi_str_mv 10.1371/journal.pone.0103008
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An efficient control of virus infections requires the coordinated actions of both innate and adaptive immune responses. In order to define the role of innate immunity effectors against HBV, viral clearance was studied in a panel of immunodeficient mouse strains by the hydrodynamic injection approach. Our results demonstrate that HBV viral clearance is not changed in IFN-α/β receptor (IFNAR), RIG-I, MDA5, MYD88, NLRP3, ASC, and IL-1R knock-out mice, indicating that these innate immunity effectors are not required for HBV clearance. In contrast, HBV persists in the absence of tumor necrosis factor-alpha (TNF-α) or in mice treated with the soluble TNF receptor blocker, Etanercept. In these mice, there was an increase in PD-1-expressing CD8+ T-cells and an increase of serum HBV DNA, HBV core, and surface antigen expression as well as viral replication within the liver. Furthermore, the induction of TNF-α in clearing HBV is dependent on the HBV core, and TNF blockage eliminated HBV core-induced viral clearance effects. Finally, the intra-hepatic leukocytes (IHLs), but not the hepatocytes, are the cell source responsible for TNF-α production induced by HBcAg. 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Furthermore, the induction of TNF-α in clearing HBV is dependent on the HBV core, and TNF blockage eliminated HBV core-induced viral clearance effects. Finally, the intra-hepatic leukocytes (IHLs), but not the hepatocytes, are the cell source responsible for TNF-α production induced by HBcAg. These results provide evidences for TNF-α mediated innate immune mechanisms in HBV clearance and explain the mechanism of HBV reactivation during therapy with TNF blockage agents.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25047809</pmid><doi>10.1371/journal.pone.0103008</doi><oa>free_for_read</oa></addata></record>
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subjects Activation
Adaptive immunity
Animals
Biology and Life Sciences
Blockage
CD8 antigen
Chronic infection
Cirrhosis
Deoxyribonucleic acid
Disease Models, Animal
DNA
Effectors
Etanercept
Gene expression
Health aspects
Hepatitis
Hepatitis B
Hepatitis B Core Antigens - metabolism
Hepatitis B virus - immunology
Hepatocellular carcinoma
Hepatocytes
Immune clearance
Immune response
Immune system
Immunity
Immunity, Innate
Immunodeficiency
Infection
Innate immunity
Interferon
Interleukin 1 receptors
Leukocytes
Liver
Liver - immunology
Liver - metabolism
Liver cancer
Liver cirrhosis
Lymphocytes T
Medicine and Health Sciences
Mice
MyD88 protein
Necrosis
PD-1 protein
Rodents
T cells
Tumor necrosis factor
Tumor necrosis factor receptors
Tumor Necrosis Factor-alpha - metabolism
Tumor necrosis factor-TNF
Tumor necrosis factor-α
Tumors
Virus Replication - immunology
Viruses
α-Interferon
title Tumor necrosis factor-alpha induced by hepatitis B virus core mediating the immune response for hepatitis B viral clearance in mice model
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