Cited by 72Liver Diseases and ImmunityGut microbiota and healthT-cell and B-cell Immunology

Tet2 deficiency drives liver microbiome dysbiosis triggering Tc1 cell autoimmune hepatitis

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Pandey, Surya P., Bender, Mackenzie J., McPherson, Alex C., Phelps, Catherine M., Sanchez, Luzmariel Medina, Rana, Mohit, Hedden, Lee, Sangani, Kishan A. +16 more·2022·Cell Host & Microbe

Abstract

The triggers that drive interferon-γ (IFNγ)-producing CD8 T cell (Tc1 cell)-mediated autoimmune hepatitis (AIH) remain obscure. Here, we show that lack of hematopoietic Tet methylcytosine dioxygenase 2 (Tet2), an epigenetic regulator associated with autoimmunity, results in the development of microbiota-dependent AIH-like pathology, accompanied by hepatic enrichment of aryl hydrocarbon receptor (AhR) ligand-producing pathobionts and rampant Tc1 cell immunity. We report that AIH-like disease development is dependent on both IFNγ and AhR signaling, as blocking either reverts ongoing AIH-like pathology. Illustrating the critical role of AhR-ligand-producing pathobionts in this condition, hepatic translocation of the AhR ligand indole-3-aldehyde (I3A)-releasing Lactobacillus reuteri is sufficient to trigger AIH-like pathology. Finally, we demonstrate that I3A is required for L. reuteri-induced Tc1 cell differentiation in vitro and AIH-like pathology in vivo, both of which are restrained by Tet2 within CD8 T cells. This AIH-disease model may contribute to the development of therapeutics to alleviate AIH.

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Authors
Pandey, S. P., Bender, M. J., McPherson, A. C., Phelps, C. M., Sanchez, L. M., Rana, M., Hedden, L., Sangani, K. A., Chen, L., Shapira, J. H., Siller, M., Goel, C., Verdú, E. F., Jabri, B., Chang, A., Chandran, U. R., Mullett, S. J., Wendell, S. G., Singhi, A. D., Tilstra, J. S., Pierre, J. F., Arteel, G. E., Hinterleitner, R., & Meisel, M.
Affiliations
  • University of Pittsburgh (US)
  • University of Chicago (US)
  • University of Wisconsin–Madison (US)
Corresponding author
Meisel, Marlies
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2022-07
Volume
30
Issue
7
Pages
1003-1019.e10
ISSN
1931-3128 (ISSN-L)
OpenAlex
W4281652082
Cited by
72
References
97
Citations by year
2026: 16 · 2025: 24 · 2024: 12 · 2023: 14 · 2022: 6
FWCI
8.34
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (1s10od023402-01a1)
  • National Institute on Alcohol Abuse and Alcoholism (R01AA021978)
  • National Cancer Institute (R21CA259636, R01CA253329, P30CA047904)
  • National Institute of General Medical Sciences (T32GM007281)
  • National Institute of Allergy and Infectious Diseases (R21AI163721, R21AI163503, T32AI089443)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK120531, R01DK130897)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (K08AR075056)
Topics
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
TET2, autoimmune hepatitis, dysbiosis, Tc1 cells, CD8+ T cells, aryl hydrocarbon receptor, indole-3-carboxaldehyde, Lactobacillus reuteri, pathobionts, interferon-gamma, epigenetic regulation, gut-liver axis, autoimmunity
MeSH terms
Animals, DNA-Binding Proteins, Interferon-gamma, Ligands, Liver, T-Lymphocytes, Cytotoxic, Hepatitis, Autoimmune, Dioxygenases, Mice, Limosilactobacillus reuteri, Microbiota, Dysbiosis

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