m⁶A-Mediated epitranscriptomic control of mitochondrial dysfunction in neurodegeneration

Area of Science:

• Neuroscience
• Molecular Biology
• Genetics

Background:

• Mitochondrial dysfunction is a key factor in neurodegenerative diseases, leading to neuronal damage through oxidative stress, impaired energy production, and apoptosis.
• Epitranscriptomic RNA modifications, especially N⁶-methyladenosine (m⁶A), are increasingly recognized for their role in regulating mitochondrial gene expression and cellular stress responses.

Purpose of the Study:

• To review the current understanding of mitochondrial epitranscriptomics, focusing on the role of m⁶A modifications.
• To highlight how m⁶A regulators impact mitochondrial homeostasis and neurodegeneration.
• To explore the therapeutic potential of targeting m⁶A machinery in neurodegenerative conditions.

Main Methods:

• Literature review of recent studies on m⁶A modifications in mitochondrial biology and neurodegeneration.
• Analysis of the mechanisms by which m⁶A affects nuclear and mitochondrial transcripts.
• Examination of the impact of m⁶A dysregulation on mitochondrial processes and neuronal survival.

Main Results:

• m⁶A modifications regulate mitochondrial gene expression, splicing, stability, and translation.
• These modifications influence critical mitochondrial functions such as fission/fusion, oxidative phosphorylation, mitophagy, and apoptosis.
• Dysregulation of the m⁶A machinery exacerbates oxidative stress, neuroinflammation, and neuronal loss in neurodegenerative diseases.

Conclusions:

• m⁶A modifications are central regulators of mitochondrial stress responses and play a significant role in neurodegeneration.
• Modulating m⁶A regulators can restore mitochondrial function, reduce apoptosis, and mitigate neuroinflammation.
• Targeting the m⁶A epitranscriptomic pathway presents a promising therapeutic strategy for neurodegenerative diseases.