Mitochondrial DNA Instability and Neuroinflammation: Connecting the Dots Between Base Excision Repair and Neurodegenerative Disease.
Level 5 - mechanism / opinion, no new human data
Narrative review describing biological mechanisms without systematic review methodology or primary human clinical data.
PubMed 41595502 · doi:10.3390/genes17010082
What was done
This narrative review synthesized recent findings on the role of base excision repair (BER) in preserving neuronal mitochondrial DNA (mtDNA) stability, the consequences of BER failure on bioenergetics and cytosolic mtDNA release, and potential therapeutic approaches targeting mtDNA maintenance and neuroimmune signaling.
What was found
The abstract reports no quantitative data or experimental metrics. It describes a mechanistic cascade in which impaired mitochondrial BER leads to mtDNA damage, electron transport chain dysfunction, increased reactive oxygen species production, and the release of damaged mtDNA fragments that act as damage-associated molecular patterns (DAMPs) to stimulate inflammasomes and sustained neuroinflammation.
Why it matters
It highlights how primary mitochondrial DNA repair deficits can directly trigger innate immune signaling, framing BER pathways and mtDNA DAMP clearance as potential therapeutic targets in neurodegenerative diseases.
Limits
As a narrative review, it presents conceptual models and syntheses rather than primary empirical data. The abstract provides no systematic literature search criteria, study selection filters, or quantitative evaluations.
Cited by
- context There are on average approximately 1,000 mitochondria per human cell.