Critical role of tumor necrosis factor receptor 1, but not 2, in hepatic stellate cell proliferation, extracellular matrix remodeling, and liver fibrogenesis
Open accessAbstract
Tumor necrosis factor (TNF) has been implicated in the progression of many chronic liver diseases leading to fibrosis; however, the role of TNF in fibrogenesis is controversial and the specific contribution of TNF receptors to hepatic stellate cell (HSC) activation remains to be established. Using HSCs from wild-type, TNF-receptor-1 (TNFR1) knockout, TNF-receptor-2 (TNFR2) knockout, or TNFR1/R2 double-knockout (TNFR-DKO) mice, we show that loss of both TNF receptors reduced procollagen-α1(I) expression, slowed down HSC proliferation, and impaired platelet-derived growth factor (PDGF)-induced promitogenic signaling in HSCs. TNFR-DKO HSCs exhibited decreased AKT phosphorylation and in vitro proliferation in response to PDGF. These effects were reproduced in TNFR1 knockout, but not TNFR2 knockout, HSCs. In addition, matrix metalloproteinase 9 (MMP-9) expression was dependent on TNF binding to TNFR1 in primary mouse HSCs. These results were validated in the human HSC cell line, LX2, using neutralizing antibodies against TNFR1 and TNFR2. Moreover, in vivo liver damage and fibrogenesis after bile-duct ligation were reduced in TNFR-DKO and TNFR1 knockout mice, compared to wild-type or TNFR2 knockout mice. Conclusion: TNF regulates HSC biology through its binding to TNFR1, which is required for HSC proliferation and MMP-9 expression. These data indicate a regulatory role for TNF in extracellular matrix remodeling and liver fibrosis, suggesting that targeting TNFR1 may be of benefit to attenuate liver fibrogenesis. (HEPATOLOGY 2011;)
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TNFα and its receptor 1 are key regulators of HSC activation.
“Importantly, TNF signaling has a prominent role in promoting fibrosis, given that TNFα and its receptor 1 are key regulators of HSC activation.( 73 )”
From The Emerging Role of B Cells in the Pathogenesis of NAFLD (2021) · cites this paper as [73]
TNF signaling has a prominent role in promoting fibrosis.
“Importantly, TNF signaling has a prominent role in promoting fibrosis, given that TNFα and its receptor 1 are key regulators of HSC activation.( 73 )”
From The Emerging Role of B Cells in the Pathogenesis of NAFLD (2021) · cites this paper as [73]
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- Authors
- Tarrats, N., Moles, A., Morales, A., García-Ruiz, C., Fernández-Checa, J. C., & Marí, M.
- Affiliations
- Hospital Clínic de Barcelona (ES)
- Consejo Superior de Investigaciones Científicas (ES)
- University of Southern California (US)
- Corresponding author
- Fernández-Checa, José C.
- Venue
- Hepatology
- Published
- 2011-07
- Volume
- 54
- Issue
- 1
- Pages
- 319-327
- ISSN
- 0270-9139 (ISSN-L)
- PMC
- PMC3125435
- OpenAlex
- W2023044058
- Cited by
- 128
- References
- 33
- Citations by year
- 2025: 3 · 2024: 8 · 2023: 11 · 2022: 6 · 2021: 11 · 2020: 9 · 2019: 10 · 2018: 8 · 2017: 8 · 2016: 5 · 2015: 13 · 2014: 10 · 2013: 11 · 2012: 12
- FWCI
- 7.30
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Hepatology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
- Funders
- National Institute on Alcohol Abuse and Alcoholism (P50-AA11999, P50AA011999)
- Topics
- Health Sciences › Medicine › Hepatology › Liver physiology and pathology
- Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
- Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
- Keywords
- TNF-α, TNF receptor 1, TNF receptor 2, hepatic stellate cells, liver fibrosis, extracellular matrix remodeling, stellate cell proliferation, platelet-derived growth factor signaling, Akt phosphorylation, MMP-9, type I procollagen, bile duct ligation, chronic liver disease
- MeSH terms
- Collagen Type I, alpha 1 Chain, Animals, Antibodies, Bile Ducts, Cell Line, Disease Models, Animal, Extracellular Matrix, Humans, Ligation, Liver Cirrhosis, Mice, Inbred C57BL, Phosphorylation, Mice, Knockout, Matrix Metalloproteinase 9, Collagen Type I, Receptors, Tumor Necrosis Factor, Type I, Receptors, Tumor Necrosis Factor, Type II, Cell Proliferation, Proto-Oncogene Proteins c-akt, Mice, Hepatic Stellate Cells
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