โก Quick Summary
This review explores the critical role of amino acid metabolism in retinal diseases, highlighting mechanisms such as excitotoxicity and oxidative stress. It also discusses innovative diagnostic methods and therapeutic strategies aimed at restoring metabolic homeostasis in the retina.
๐ Key Details
- ๐ฌ Focus: Amino acid metabolism in retinal diseases
- ๐งฌ Mechanisms: Excitotoxicity, oxidative stress, immune remodeling, neurotoxic lipid production
- ๐งช Diagnostics: Intraocular fluid metabolomics and AI-assisted imaging
- ๐ Therapeutics: Metabolic substrate supplementation and nanodelivery systems
๐ Key Takeaways
- ๐ง Amino acid metabolism is crucial for retinal energy supply and neurotransmission.
- โ ๏ธ Disruption of the glutamate-glutamine cycle leads to excitotoxicity, a key factor in retinal diseases.
- ๐ฑ Mitochondrial oxidative stress is exacerbated by the accumulation of branched-chain and sulfur-containing amino acids.
- ๐ก๏ธ Immune microenvironment is remodeled due to altered tryptophan and arginine metabolism.
- ๐งช Emerging diagnostics include metabolomics-based liquid biopsy for early detection.
- ๐ค AI-assisted imaging enhances molecular classification of retinal diseases.
- ๐ก New treatment approaches focus on metabolic substrate supplementation and enzyme-targeting interventions.
- ๐ Restoration of metabolic homeostasis is a promising strategy for preventing and treating retinal diseases.
๐ Background
Retinal diseases pose significant challenges to vision health, often leading to irreversible damage. Understanding the underlying mechanisms of these diseases is essential for developing effective treatments. Recent research has identified amino acid metabolism as a central player in maintaining retinal function, linking energy supply, neurotransmission, and cell signaling.
๐๏ธ Study
This review synthesizes findings from various studies to elucidate the molecular mechanisms by which abnormal amino acid metabolism contributes to retinal diseases. It emphasizes the importance of understanding these pathways to identify potential diagnostic and therapeutic opportunities.
๐ Results
The review highlights several key mechanisms: the disruption of the glutamate-glutamine cycle leads to excitotoxicity; mitochondrial oxidative stress arises from the accumulation of specific amino acids; and alterations in tryptophan and arginine metabolism affect the immune microenvironment. Furthermore, deficiencies in serine and glycine contribute to neurotoxic lipid production, exacerbating retinal damage.
๐ Impact and Implications
The insights gained from this review could significantly impact the management of retinal diseases. By focusing on amino acid metabolism, researchers and clinicians can develop targeted therapies that restore metabolic balance, potentially improving patient outcomes. The integration of advanced diagnostic tools, such as metabolomics and AI, promises to enhance early detection and personalized treatment strategies.
๐ฎ Conclusion
This review underscores the vital role of amino acid metabolism in retinal health and disease. By restoring metabolic homeostasis, we may unlock new avenues for prevention and treatment of retinal diseases. Continued research in this area is essential for translating these findings into clinical practice, offering hope for improved vision health in the future.
๐ฌ Your comments
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Amino Acid Metabolism in Retinal Diseases: Mechanisms, Diagnostics, and Therapeutic Opportunities.
Abstract
Amino acid metabolism serves as a central hub linking retinal energy supply, neurotransmission, and cell signaling, which is critical for maintaining retinal structure and function. This review summarizes the molecular mechanisms by which abnormal amino acid metabolism contributes to retinal diseases. The major mechanisms include: 1) excitotoxicity caused by disruption of glutamate-glutamine cycle; 2) mitochondrial oxidative stress and epigenetic changes due to accumulation of branched-chain and sulfur-containing amino acids; 3) remodeling of immune microenvironment due to altered tryptophan and arginine metabolism; 4) neurotoxic lipid production and signaling imbalance resulting from serine and glycine deficiency. Clinically, we highlight the emerging roles of intraocular fluid metabolomics-based liquid biopsy and artificial intelligence-assisted multimodal imaging in early diagnosis and molecular classification. We further summarize emerging treatment approaches, including metabolic substrate supplementation, interventions targeting key enzymes and transporters, and development of responsive nanodelivery systems. Overall, restoration of amino acid metabolic homeostasis represents a promising strategy for the prevention and treatment of retinal diseases.
Author: [‘Yang X’, ‘Xia J’, ‘Zhao Y’, ‘Liu Q’, ‘Fu X’, ‘Yan B’]
Journal: Exp Eye Res
Citation: Yang X, et al. Amino Acid Metabolism in Retinal Diseases: Mechanisms, Diagnostics, and Therapeutic Opportunities. Amino Acid Metabolism in Retinal Diseases: Mechanisms, Diagnostics, and Therapeutic Opportunities. 2026; (unknown volume):111033. doi: 10.1016/j.exer.2026.111033