ArticleInvestigative ophthalmology & visual science2025
Corneal Sensory Denervation Causes Epithelial Ferroptosis and Delayed Healing in Mice.
Article in Investigative ophthalmology & visual science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Immune cell dynamics and cytokine regulation in cornea and transplantation.Frontiers in immunology · 2026Review
- Ferroptosis and the eye: bridging the gap between cell death and vision preservation.Frontiers in immunology · 2026Review
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Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: This study aimed to elucidate the role and mechanism of corneal nerves in regulating epithelial cell response against ferroptosis. Methods: Denervated mouse models were established via surgical axotomy and capsaicin treatment. Monochlorobimane staining was employed to detect cellular glutathione (GSH) levels in the corneal epithelium, and real-time quantitative PCR and immunofluorescence staining were used to evaluate GSH-related gene expression in denervated models and corneas of patients with neurotrophic keratitis. Scanning electron microscopy was utilized to observe mitochondrial morphology in corneal epithelial cells. Ferroptosis inhibitor ferrostatin-1 was administered post-corneal scrape in capsaicin-treated mice, followed by transcriptomic sequencing. The p53 agonist Kevetrin activated p53 in scraped corneas and cultured corneal epithelial cells. Furthermore, capsaicin was topically applied to Trp53+/- mice, followed by corneal epithelial scraping. Results: In denervated models, the expression of GSH-related genes was downregulated, and mitochondrial morphology exhibited characteristics of ferroptosis in corneal epithelial cells. The delay in corneal wound healing induced by TRPV1+ sensory denervation was ameliorated by ferrostatin-1 treatment. RNA sequencing and immunofluorescence staining demonstrated upregulated p53 in TRPV1-denervated mice, which was subsequently downregulated following ferrostatin-1 treatment. Kevetrin exacerbated wound healing delays, whereas Trp53+/- mice exhibited accelerated healing post-capsaicin denervation compared to wild-type controls. Conclusions: TRPV1+ sensory nerves play a regulatory role in preventing ferroptosis of corneal epithelial cells through the p53/AKT/mTOR signaling pathway. Targeting this pathway may offer therapeutic potential for neurotrophic keratopathy and related disorders.
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