The m⁶A Modification in Neurodegenerative Disease: A Cellular Perspective

Area of Science:

• Neuroscience
• Molecular Biology
• Epigenetics

Background:

• N6-methyladenosine (m6A) is a prevalent internal RNA modification in eukaryotes.
• m6A regulates gene expression by affecting RNA stability, splicing, nuclear export, and translation.
• Dysregulation of m6A is implicated in neuroinflammation, neurotoxicity, and synaptic dysfunction, hallmarks of neurodegenerative diseases.

Purpose of the Study:

• To review the cell-type-specific roles of m6A modification in neurodegenerative diseases.
• To analyze how m6A dynamics influence disease-related processes in different neural cell types.

Main Methods:

• Systematic review of recent studies on m6A modifications in neurons and glial cells.
• Analysis of transcriptomic, epitranscriptomic, and functional data.
• Examination of cell-type-specific m6A patterns and their impact on disease progression.

Main Results:

• m6A regulates neuroinflammation and immune responses in microglia.
• m6A impacts astrocytic support functions and oligodendrocyte-mediated myelination.
• Altered m6A patterns in neurons affect synaptic plasticity, stress responses, and survival.
• Cell-type-specific m6A dysregulation contributes to Alzheimer's disease (AD), Parkinson's disease (PD), and Amyotrophic lateral sclerosis (ALS).

Conclusions:

• m6A modifications play critical, cell-type-specific roles in the pathogenesis of neurodegenerative diseases.
• Targeting m6A-modulated mechanisms in specific neural cell types offers potential therapeutic strategies for AD, PD, and ALS.