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Real-Time Analysis of Bioenergetics in Primary Human Retinal Pigment Epithelial Cells Using High-Resolution Respirometry
Published on: February 3, 2023
Non-Coding RNAs Regulating Mitochondrial Functions and the Oxidative Stress Response as Putative Targets against
Juha M T Hyttinen1, Janusz Blasiak2, Kai Kaarniranta1,3
1Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland.
Abstract:
Age-related macular degeneration (AMD) is an ever-increasing, insidious disease which reduces the quality of life of millions of elderly people around the world. AMD is characterised by damage to the retinal pigment epithelium (RPE) in the macula region of the retina. The origins of this multi-factorial disease are complex and still not fully understood. Oxidative stress and mitochondrial imbalance in the RPE are believed to be important factors in the development of AMD. In this review, the regulation of the mitochondrial function and antioxidant stress response by non-coding RNAs (ncRNAs), newly emerged epigenetic factors, is discussed. These molecules include microRNAs, long non-coding RNAs, and circular non-coding RNAs. They act mainly as mRNA suppressors, controllers of other ncRNAs, or by interacting with proteins. We include here examples of these RNA molecules which affect various mitochondrial processes and antioxidant signaling of the cell. As a future prospect, the possibility to manipulate these ncRNAs to strengthen mitochondrial and antioxidant response functions is discussed. Non-coding RNAs could be used as potential diagnostic markers for AMD, and in the future, also as therapeutic targets, either by suppressing or increasing their expression. In addition to AMD, it is possible that non-coding RNAs could be regulators in other oxidative stress-related degenerative diseases.
Insights
Non-coding RNAs (ncRNAs) regulate mitochondrial function and antioxidant responses, offering potential diagnostic and therapeutic targets for age-related macular degeneration (AMD). These epigenetic factors are crucial for cellular health and may impact other degenerative diseases.
Area of Science:
- Epigenetics
- Molecular Biology
- Ophthalmology
Background:
- Age-related macular degeneration (AMD) is a leading cause of vision loss in the elderly, characterized by retinal pigment epithelium (RPE) damage.
- The multifactorial origins of AMD are complex, with oxidative stress and mitochondrial dysfunction implicated in RPE cells.
Purpose of the Study:
- To review the role of non-coding RNAs (ncRNAs) in regulating mitochondrial function and antioxidant stress response.
- To explore the potential of ncRNAs as diagnostic markers and therapeutic targets for AMD.
Main Methods:
- Literature review focusing on ncRNAs (microRNAs, long ncRNAs, circular ncRNAs) and their impact on mitochondrial and antioxidant pathways.
- Analysis of ncRNA mechanisms, including mRNA suppression, regulation of other ncRNAs, and protein interactions.
Main Results:
- ncRNAs significantly influence mitochondrial processes and cellular antioxidant signaling.
- Specific examples of ncRNAs affecting mitochondrial function and oxidative stress response are presented.
Conclusions:
- ncRNAs are key epigenetic regulators of mitochondrial and antioxidant functions.
- ncRNAs hold promise as diagnostic biomarkers and therapeutic targets for AMD and potentially other oxidative stress-related diseases.
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