Retinal aging and diabetic retinopathy: converging metabolic pathways and shared gene expression profiles

Area of Science:

• Ophthalmology and Molecular Biology
• Genetics and Aging Research

Background:

• Diabetic retinopathy (DR) and retinal aging share underlying molecular mechanisms despite distinct causes.
• Oxidative stress, inflammation, mitochondrial dysfunction, and AGE accumulation are common pathways compromising retinal integrity.

Purpose of the Study:

• To identify shared genes and molecular pathways between DR and retinal aging.
• To explore potential therapeutic strategies targeting common mechanisms.

Main Methods:

• Systematic retrieval of DR- and aging-related human genes from public databases.
• Cross-validation of genes across databases and filtering by ocular expression.
• Focus on genes involved in key metabolic pathways: AGEs, oxidative stress, lipid metabolism, and autophagy.

Main Results:

• DR and retinal aging converge on four principal metabolic pathways: oxidative stress, AGE accumulation, lipid dysregulation, and impaired autophagy.
• Shared genes with high ocular expression highlight the biological relevance of these pathways.
• Multi-pathway hub genes act as central regulators integrating metabolic and proteostatic dysfunction.

Conclusions:

• A unified molecular perspective of retinal degeneration emerges from shared pathways and genes.
• Targeting these common pathways presents potential therapeutic opportunities for both DR and age-related retinal diseases.
• Further validation is required to establish causal relationships and therapeutic relevance.