ArticleCell death discovery2025
IL‑1 receptor antagonism attenuates renal fibrosis via RNF182‑driven MFN2 destabilization and mitochondrial dysfunction.
Article in Cell death discovery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Mitochondrial dysfunction of renal tubular epithelial cells in chronic kidney disease-associated fibrosis: from organelle homeostasis to multicellular remodeling.Molecular biology reports · 2026Review
- MFN2 Overexpression Attenuates Coal Dust-Induced Pulmonary Fibrosis by Modulating MAMs Integrity and Cell Apoptosis.Toxics · 2026Article
- SIRT3 deficiency aggravates renal injury and fibrosis in chronic kidney disease and is associated with intestinal barrier dysfunction and gut microbiota dysbiosis.Frontiers in microbiology · 2026Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Renal fibrosis is a major driver of chronic kidney disease (CKD) progression, yet targeted therapies remain limited due to incomplete understanding of key molecular mechanisms. While IL-1-mediated inflammation and mitochondrial dysfunction are recognized contributors, the precise links between IL-1 signaling, fibrosis, and mitochondrial homeostasis are unclear. Here, we investigated the therapeutic effects of recombinant human IL-1 receptor antagonist (rhIL-1Ra) in both acute (UUO) and chronic (5/6Nx) mouse models of kidney injury, as well as in vitro TGF-β1-stimulated kidney cells. rhIL-1Ra significantly attenuated renal fibrosis, inflammation, and functional impairment in vivo. Mechanistically, rhIL-1Ra suppressed TGF-β1-induced expression of the E3 ubiquitin ligase RNF182, which we show mediates MFN2 ubiquitination and degradation, leading to mitochondrial dysfunction. Inhibition of RNF182 by rhIL-1Ra stabilized MFN2, preserved mitochondrial respiration and ATP production, and reduced oxidative stress. Rescue experiments confirmed the centrality of the RNF182-MFN2 axis in fibrotic and mitochondrial injury. Our findings reveal a novel IL-1R/RNF182/MFN2 pathway linking inflammation to mitochondrial and fibrotic pathology, supporting RNF182 as a promising target and rhIL-1Ra as a potential therapy for CKD.
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Registered trials
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