ArticleJournal of cellular and molecular medicine2025
A PEDF-Derived Short Peptide Prevents Sodium Iodate-Induced Retinal Degeneration in Rats by Activating the SLC7A11/GSH/GPX4 Pathway in the RPE Cells.
Article in Journal of cellular and molecular medicine, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
3 citing papers in PubMed.
- Mechanistic insights into the role of PEDF-R (PNPLA2) in photoreceptors.Bioscience reports · 2026Review
- Prominin-1 Regulates Retinal Pigment Epithelium Homeostasis: Transcriptomic Insights into Degenerative Mechanisms.International journal of molecular sciences · 2025Article
- A PEDF-Derived Short Peptide Prevents Sodium Iodate-Induced Retinal Degeneration in Rats by Activating the SLC7A11/GSH/GPX4 Pathway in the RPE Cells.Journal of cellular and molecular medicine · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Retinal pigment epithelial (RPE) cell damage caused by oxidative stress is a key factor in the pathogenesis of dry age-related macular degeneration (AMD). 6dS peptide is derived from the neuroprotective motif of pigment epithelium-derived factor (PEDF) and has antioxidant effects. This study used the sodium iodate (SI, a chemical oxidant)-induced animal dry AMD model to investigate the 6dS-mediated antioxidant mechanism. 6dS reduced SI-induced cytotoxicity, including ferrous iron accumulation, lipid peroxidation, glutathione (GSH) depletion, and ferroptosis in ARPE-19 cells. SI injection in rats induced cell death and lipid peroxidation in the RPE layer, along with retinal atrophy and electrophysiological dysfunction, recapitulating features of dry AMD that were counteracted by 6dS eye drop treatment. Mechanistically, 6dS induced the expression of SLC7A11 (solute carrier family seven member 11) and glutathione peroxidase 4 (GPX4) to alleviate SI-induced GSH depletion and lipid peroxidation. Inhibitors targeting the PEDF receptor, SLC7A11, and GPX4 abolished the 6dS effect. Our study proposes an antioxidant mechanism through which PEDF receptor signalling links to the SLC7A11/GSH/GPX4 axis to alleviate intracellular redox imbalance. These findings suggest that 6dS eye drops may be a promising treatment for dry AMD.
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Registered trials
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