Cited by 69Liver Disease Diagnosis and TreatmentLiver physiology and pathologyLiver Diseases and Immunity

Hepatocytes demarcated by EphB2 contribute to the progression of nonalcoholic steatohepatitis

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Xiao, Yang, Batmanov, Kirill, Hu, Wenxiang, Zhu, Kun, Tom, Alexander Y., Guan, Dongyin, Jiang, Chunjie, Cheng, Lan +6 more·2023·Science Translational Medicine

Abstract

Current therapeutic strategies for treating nonalcoholic steatohepatitis (NASH) have failed to alleviate liver fibrosis, which is a devastating feature leading to hepatic dysfunction. Here, we integrated single-nucleus transcriptomics and epigenomics to characterize all major liver cell types during NASH development in mice and humans. The bifurcation of hepatocyte trajectory with NASH progression was conserved between mice and humans. At the nonalcoholic fatty liver (NAFL) stage, hepatocytes exhibited metabolic adaptation, whereas at the NASH stage, a subset of hepatocytes was enriched for the signatures of cell adhesion and migration, which were mainly demarcated by receptor tyrosine kinase ephrin type B receptor 2 (EphB2). EphB2, acting as a downstream effector of Notch signaling in hepatocytes, was sufficient to induce cell-autonomous inflammation. Knockdown of Ephb2 in hepatocytes ameliorated inflammation and fibrosis in a mouse model of NASH. Thus, EphB2-expressing hepatocytes contribute to NASH progression and may serve as a potential therapeutic target.

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Crossref · 10.1126/scitranslmed.adc9653

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  • Our single-nuclear RNA-seq in murine MASH models and MASH patients showed enrichment of myofibroblast pathways regulating ECM production and cell migration, including MMPs, TIMPs, and LOXLs.

    “We recently used single nuclear RNA-seq in murine MASH models and patients with MASH to demonstrate enrichment of pathways in myofibroblasts that regulate extracellular matrix production and cell migration, including matrix metalloproteinase (MMPs), tissue inhibitors of metalloproteinases (TIMPs), and lysyl oxidases (LOXLs) (47-49), similar to earlier studies of mouse fibrosis and human cirrhosis”
  • In experimental MASH and human disease, a subset of hepatocytes expressing the Ephrin B2 receptor can induce cell-autonomous inflammation that provokes fibrosis, making these cells a potential therapeutic target.

    “For example, in experimental MASH and human disease a subset of hepatocytes that express the Ephrin B2 receptor can induce cell-autonomous inflammation that provokes fibrosis, establishing these cells as a potential therapeutic target (49).”
  • Detection of both quiescent and activated HSCs in mouse liver injury models by single-cell RNA-seq supports HSC activation as a driver of fibrosis across etiologies, including MASH.

    “The detection of both quiescent and activated HSCs in mouse liver injury models using single cell RNA-seq reinforces HSC activation as a driver of fibrosis common across etiologies that includes MASH (46-50).”
  • Although activated HSCs are the primary fibrogenic cells in MASH, single-cell methods have identified an expanded list of fibrogenic drivers expressed by activated HSCs that could be antifibrotic drug targets.

    “Although activated HSCs are the primary fibrogenic cells in MASH, these methods have identified an expanded list of fibrogenic drivers expressed by activated HSCs that could represent antifibrotic drug targets (42, 48, 49, 125).”
  • Applying informatic tools and databases uncovered an altered cell-cell communication network in MASH based on differential ligand and receptor expression across cell types.

    “Applying recent developments in informatic tools and databases (130, 131) has uncovered an altered cell-cell communication network in MASH based on the differential expression of ligands and receptors in different cell types (48, 49).”

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Authors
Xiao, Y., Batmanov, K., Hu, W., Zhu, K., Tom, A. Y., Guan, D., Jiang, C., Cheng, L., McCright, S. J., Yang, E. C., Lanza, M. R., Liu, Y., Hill, D. A., & Lazar, M. A.
Affiliations
  • University of Pennsylvania (US)
  • Guangzhou Laboratory (CN)
  • Baylor College of Medicine (US)
  • Children's Hospital of Philadelphia (US)
Corresponding author
Lazar, Mitchell A.
Venue
Science Translational Medicine
Published
2023-02-08
Volume
15
Issue
682
Pages
eadc9653-eadc9653
ISSN
  • 1946-6234 (ISSN-L)
  • 1946-6242
OpenAlex
W4319459347
Cited by
69
References
58
Citations by year
2026: 16 · 2025: 24 · 2024: 20 · 2023: 9
FWCI
13.72
Type
journal article
Language
en
Open access
Locations
  • Science Translational Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Commons-TMC (Texas Medical Center) (submittedVersion)
Funders
  • Pfizer
  • University of Pennsylvania
  • National Institutes of Health (DK 19525)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K01DK125602, K08DK116668, P30DK019525, R01DK125573, P30DK050306)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
Keywords
nonalcoholic steatohepatitis, liver fibrosis, EphB2, hepatocytes, Notch signaling, cell adhesion, cell migration, single-nucleus transcriptomics, epigenomics, NASH progression, therapeutic target
MeSH terms
Animals, Humans, Inflammation, Liver, Liver Cirrhosis, Mice, Inbred C57BL, Hepatocytes, Mice, Non-alcoholic Fatty Liver Disease

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