Cited by 41Hepatitis B Virus StudiesLiver physiology and pathologyImmune Response and Inflammation

CD205-TLR9-IL-12 axis contributes to CpG-induced oversensitive liver injury in HBsAg transgenic mice by promoting the interaction of NKT cells with Kupffer cells

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Hou, Xin, Hao, Xiaolei, Zheng, Meijuan, Xu, Congfei, Wang, Jun, Zhou, Rongbin, Tian, Zhigang·2017·Cellular & Molecular Immunology

Abstract

Gut-derived bacterial products contribute to liver inflammation and injury during chronic hepatitis B virus infection; however, the underlying mechanisms remain obscure. In this study, hepatitis B surface antigen transgenic (HBs-Tg) mice and their wild-type (WT) control C57BL/6 mice were injected with CpG-oligodeoxynucleotides (ODNs) to mimic the translocation of gut microbial products into the systemic circulation. We found that, compared with the WT mice, the HBs-Tg mice were oversensitive to CpG-ODN-induced liver injury, which was dependent on natural killer T (NKT) cells. CpG-ODN injection enhanced the expression of Fas ligand (FasL) on NKT cells. In addition, hepatocytes from the HBs-Tg mice expressed higher levels of Fas than did those from the WT mice, which was further augmented by CpG-ODN. Interaction of Fas and FasL was involved in the cytotoxicity of NKT cells against hepatocytes in the HBs-Tg mice. Moreover, Kupffer cells in the HBs-Tg mice expressed higher levels of CD205 and produced greater amounts of interleukin (IL)-12 than did those in the WT mice. Finally, the depletion of Kupffer cells, neutralization of IL-12 or specific silencing of CD205 on Kupffer cells significantly inhibited CpG-ODN-induced liver injury and NKT activation in the HBs-Tg mice. Our data suggest that CD205-expressing Kupffer cells respond to CpG-ODNs and subsequently release IL-12 to promote NKT cell activation. Activated NKT cells induce liver damage through the Fas signaling pathway in HBs-Tg mice.

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  • Upon stimulation, CD205+ macrophages produce excessive IL-12, activating NKT cells to highly express FasL, which binds Fas upregulated on hepatocytes, triggering massive hepatocyte apoptosis and severe liver injury.

    “Upon stimulation, they produce excessive IL-12, activating NKT cells to highly express FasL. This binds to Fas upregulated on hepatocytes, triggering massive hepatocyte apoptosis and severe liver injury (52).”

    From Macrophage duality in liver diseases: heterogeneity, plasticity, and the quest for precision therapeutics (2026) · cites this paper as [52]

    The Discussion (page unavailable) describes CpG-stimulated Kupffer cells releasing IL-12, which increases NKT-cell FasL expression and hepatocyte damage through FasL/Fas interaction in HBsAg-transgenic mice. The Results (page unavailable) support hepatocyte cytotoxicity and liver injury, but do not establish the claim’s stronger description of massive hepatocyte apoptosis. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • In HBsAg-transgenic mice, CD205+ macrophages are hypersensitive to bacterial products from the gut (e.g., CpG ODN).

    “In hepatitis B surface antigen (HBsAg)-transgenic mice, CD205+ macrophages are hypersensitive to bacterial products from the gut (e.g., CpG oligodeoxynucleotide (CpG ODN)).”

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Authors
Hou, X., Hao, X., Zheng, M., Xu, C., Wang, J., Zhou, R., & Tian, Z.
Affiliations
  • Anhui Medical University (CN)
  • University of Science and Technology of China (CN)
  • First Affiliated Hospital of Anhui Medical University (CN)
Corresponding author
Tian, Zhigang
Venue
Cellular & Molecular Immunology
Published
2016-04-04
Volume
14
Issue
8
Pages
675-684
ISSN
  • 1672-7681 (ISSN-L)
  • 2042-0226
OpenAlex
W2338172918
Cited by
41
References
41
Citations by year
2026: 4 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 5 · 2020: 5 · 2019: 4 · 2018: 3 · 2017: 5
FWCI
3.75
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Immunology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (81361120388, #31390433, 91429303, 81571540)
Topics
  • Health Sciences › Medicine › Epidemiology › Hepatitis B Virus Studies
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
CD205, TLR9, IL-12, NKT cells, Kupffer cells, CpG oligodeoxynucleotides, liver injury, Fas ligand, Fas signaling, chronic hepatitis B, hepatocyte cytotoxicity
MeSH terms
Animals, Antigens, Viral, Cell Communication, Cytotoxicity, Immunologic, Hepatitis B virus, Humans, Kupffer Cells, Lymphocyte Activation, Mice, Inbred C57BL, Mice, Transgenic, Oligodeoxyribonucleotides, Receptors, Cell Surface, Signal Transduction, Antigens, CD, Minor Histocompatibility Antigens, Interleukin-12, fas Receptor, Hepatocytes, RNA, Small Interfering, Lectins, C-Type, Toll-Like Receptor 9, Mice, Fas Ligand Protein, Natural Killer T-Cells, Chemical and Drug Induced Liver Injury

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