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Published on: June 23, 2023
Mitochondria-Derived Damage-Associated Molecular Patterns in Neurodegeneration
Heather M Wilkins1,2, Ian W Weidling2,3, Yan Ji1,2
1Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA.
Abstract:
Inflammation is increasingly implicated in neurodegenerative disease pathology. As no acquired pathogen appears to drive this inflammation, the question of what does remains. Recent advances indicate damage-associated molecular pattern (DAMP) molecules, which are released by injured and dying cells, can cause specific inflammatory cascades. Inflammation, therefore, can be endogenously induced. Mitochondrial components induce inflammatory responses in several pathological conditions. Due to evidence such as this, a number of mitochondrial components, including mitochondrial DNA, have been labeled as DAMP molecules. In this review, we consider the contributions of mitochondrial-derived DAMPs to inflammation observed in neurodegenerative diseases.
Insights
Neuroinflammation in neurodegenerative diseases may be caused by endogenous damage-associated molecular patterns (DAMPs). Mitochondria-released DAMPs, like mitochondrial DNA, are key drivers of this inflammation.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Neuroinflammation is a growing focus in neurodegenerative disease research.
- The source of this inflammation is unclear, as no external pathogen is typically identified.
- Endogenous triggers, such as damage-associated molecular patterns (DAMPs), are increasingly recognized.
Purpose of the Study:
- To review the role of mitochondrial-derived DAMPs in neuroinflammation.
- To explore how cellular damage initiates inflammatory responses in neurodegenerative conditions.
Main Methods:
- Literature review focusing on mitochondrial components as DAMPs.
- Analysis of existing research linking DAMPs to neuroinflammation.
Main Results:
- Mitochondrial components, including mitochondrial DNA, function as DAMPs.
- These DAMPs can initiate inflammatory cascades when released from injured cells.
- Mitochondrial DAMPs contribute significantly to the inflammation seen in neurodegenerative diseases.
Conclusions:
- Endogenous molecules, particularly from mitochondria, are critical drivers of neuroinflammation.
- Understanding mitochondrial DAMPs offers new insights into neurodegenerative disease mechanisms.
- Targeting mitochondrial DAMPs may present therapeutic strategies for neurodegenerative disorders.
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