Cited by 55Liver Disease Diagnosis and TreatmentLiver physiology and pathologyImmune Response and Inflammation

Toll-Like Receptor-7 Signaling Promotes Nonalcoholic Steatohepatitis by Inhibiting Regulatory T Cells in Mice

Open access
Roh, Yoon Seok, Kim, Jong Won, Park, Surim, Shon, Changho, Kim, Sokho, Eo, Seong Kug, Kwon, Jung Kee, Lim, Chae Woong +1 more·2018·The American Journal of Pathology

Abstract

Toll-like receptor 7 (TLR7) signaling regulates the production of type 1 interferons (IFNs) and proinflammatory cytokines, such as tumor necrosis factor (TNF)-α, implicated in the control of regulatory T (Treg) cell activity. However, the mechanistic interplay between TLR7 signaling and Treg cells in nonalcoholic steatohepatitis (NASH) has not been elucidated. Our aim was to clarify the role of TLR7 signaling in the pathogenesis of NASH. Steatohepatitis was induced in wild-type (WT), TLR7-deficient, IFN-α/β receptor 1-deficient, and Treg cell-depleted mice. TLR7-deficient and IFN-α/β receptor 1-deficient mice were more protective to steatohepatitis than WT mice. Of interest, both TNF-α and type 1 IFN promoted apoptosis of Treg cells involved in the prevention of NASH. Indeed, Treg cell-depleted mice had aggravated steatohepatitis compared with WT mice. Finally, treatment with immunoregulatory sequence 661, an antagonist of TLR7, efficiently ameliorated NASH in vivo. These results demonstrate that TLR7 signaling can induce TNF-α production in Kupffer cells and type I IFN production in dendritic cells. These cytokines subsequently induce hepatocyte death and inhibit Treg cells activities, leading to the progression of NASH. Thus, manipulating the TLR7-Treg cell axis might be used as a novel therapeutic strategy to treat NASH.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.ajpath.2018.07.011

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The inflammatory hepatic microenvironment with elevated TNF-α compromises Treg survival and promotes apoptosis during hepatocyte injury and MASH progression.

    “In addition to IL-17, the inflammatory hepatic microenvironment characterized by elevated levels of TNF-α compromises the survival of Tregs and promotes their apoptosis during hepatocyte injury and the progression of MASH.”

    From The double-edged sword of regulatory T cells in MASLD: from inflammation control to fibrosis promotion (2026) · cites this paper as Roh et al. 2018

    The “TLR7-Induced Type I IFN and TNF-α Promotes Apoptosis of Treg Cells” section reports increased apoptosis of intrahepatic Tregs after TLR7 activation, reduced by treatment that inhibits TNF-α production. The Discussion links this pathway to hepatocyte injury and NASH progression. The evidence comes from mouse experiments involving TLR7 activation and also implicates type I IFN; it does not establish the claim as a general mechanism of MASH progression. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Depletion of Tregs exacerbates hepatic inflammation in MASLD.

    “The depletion of Tregs exacerbates hepatic inflammation in MASLD (Ma et al. 2007; Roh et al. 2018), suggesting that Tregs are crucial for regulating immune responses.”

    From The double-edged sword of regulatory T cells in MASLD: from inflammation control to fibrosis promotion (2026) · cites this paper as Roh et al. 2018

    The “Foxp3+ Treg Cells Prevent NASH Development” section reports more severe steatohepatitis and higher hepatic TNF-α in Treg-depleted mice. This supports the direction of the claim, but the evidence is limited to mice with diet-induced NASH; the citing sentence states it broadly for MASLD. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Committee for the Update of the Guide for the Care and Use of Laboratory AnimalsNational Research Council: Guide for the Care and Use of Laboratory Animals: Eighth Edition. Washington, DC, National Academies Press, 2011

Cited by

Sorted by citations

Authors
Roh, Y. S., Kim, J. W., Park, S., Shon, C., Kim, S., Eo, S. K., Kwon, J. K., Lim, C. W., & Kim, B.
Affiliations
  • Chungbuk National University (KR)
  • Jeonbuk National University (KR)
Corresponding author
Kim, Bumseok
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2018-11
Volume
188
Issue
11
Pages
2574-2588
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2885324680
Cited by
55
References
52
Citations by year
2026: 3 · 2025: 9 · 2024: 9 · 2023: 5 · 2022: 9 · 2021: 9 · 2020: 8 · 2019: 3
FWCI
3.92
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Research Foundation of Korea
  • Ministry of Health and Welfare (HI17C2262)
  • Ministry of Education
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
TLR7, nonalcoholic steatohepatitis, regulatory T cells, type I interferon, TNF-α, Kupffer cells, dendritic cells, hepatocyte apoptosis, Treg depletion, liver inflammation
MeSH terms
Animals, Cells, Cultured, Dendritic Cells, Interferon Type I, Kupffer Cells, Membrane Glycoproteins, Mice, Inbred C57BL, Tumor Necrosis Factor-alpha, Signal Transduction, Cytokines, Hepatocytes, T-Lymphocytes, Regulatory, Toll-Like Receptor 7, Mice, Non-alcoholic Fatty Liver Disease

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review