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LipidUNet-Machine Learning-Based Method of Characterization and Quantification of Lipid Deposits Using iPSC-Derived Retinal Pigment Epithelium
Published on: July 28, 2023
Lipid-Retinoid Metabolic Network Links Genetic Variation to Molecular Heterogeneity in Inherited Retinal Degeneration
Przemysław Sołek1, Ewelina Cholewińska1, Robert Rejdak2
1Department of Biochemistry and Toxicology, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland.
International Journal of Molecular Sciences
|August 13, 2026
Summary
Lipid and retinoid metabolism play a key role in inherited retinal degeneration (IRD). This study reveals a lipid-retinoid network linking genetic variations to molecular changes in photoreceptors.
Area of Science:
- Ophthalmology
- Genetics
- Metabolomics
Background:
- Inherited retinal degeneration (IRD) is a genetically diverse group of diseases.
- The link between genetic variations and molecular mechanisms in IRD is not well understood.
Purpose of the Study:
- Investigate the role of lipid and retinoid metabolism in the molecular causes of IRD.
- Analyze the connection between genetic factors, protein expression, and metabolic changes.
Main Methods:
- Whole-exome sequencing (WES) of 203 IRD patients.
- Proteomic profiling of lipid-related proteins (ApoA1, ApoE, LPL).
- Quantitative assessment of systemic lipid parameters.
Main Results:
- Identified a coordinated lipid-retinoid-photoreceptor metabolic network.
- Observed significant biological variability in lipid measures, despite being within clinical ranges.
- Discovered sex-dependent differences in lipid network architecture.
- Linked variant pathogenicity to coordinated remodeling of lipid-related molecular states.
Conclusions:
- Lipid and retinoid metabolism are crucial to IRD's molecular architecture and heterogeneity.
- A lipid-retinoid metabolic network connects genetic variation to molecular remodeling in photoreceptors.
- Findings offer new insights into molecular mechanisms driving photoreceptor degeneration.
Keywords:
genetic variationinherited retinal degenerationlipid–retinoid metabolismlipoprotein-associated pathwaysmetabolic networksmolecular remodelingMore Related Videos
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