ReviewCurrent issues in molecular biology2026
Photoreceptor Vulnerability to Ferroptosis: Membrane Phospholipid Peroxidation, Mitochondrial Homeostasis, and RPE-Photoreceptor Coupling.
Review in Current issues in molecular biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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.
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Authors and funding
5 authors.
Funding
Abstract
Photoreceptor (PR) degeneration is a shared pathological feature of multiple blinding retinal diseases. This narrative review examines the mechanisms underlying PR vulnerability to ferroptosis-associated lipid-peroxidation injury, with emphasis on three interconnected features: the marked enrichment of docosahexaenoic acid (DHA) and other polyunsaturated fatty acids (PUFAs) in PR outer-segment disc membranes; the chronically high metabolic demand of PRs and the specialized spatial organization of their mitochondria; and retinal pigment epithelium (RPE)-PR metabolic coupling, including outer-segment renewal and phagocytic turnover, glucose transport and lactate shuttling, and visual-cycle-related all-trans-retinal (atRAL) clearance and bisretinoid accumulation. We also summarize antioxidant defense systems centered on the cystine/glutamate antiporter (xCT)-glutathione (GSH)-glutathione peroxidase 4 (GPX4) axis and mitochondrial GPX4 (mtGPX4), which restricts iron-dependent lipid peroxidation in PRs. We propose that highly oxidizable membrane phospholipid substrates, mitochondrial homeostatic imbalance, and impaired RPE-PR metabolic coupling may collectively shape PR susceptibility to ferroptosis-associated injury. From a therapeutic perspective, this framework supports multitarget strategies designed to interrupt lipid-peroxidation propagation, stabilize mitochondrial redox homeostasis and quality-control mechanisms, and restore RPE-PR metabolic support and local iron-buffering capacity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.