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An energetics perspective on geroscience: mitochondrial protonmotive force and aging
Brandon J Berry1, Matt Kaeberlein2
1Department of Laboratory Medicine and Pathology, University of Washington Medical Center, 1959 NE Pacific St, Seattle, WA, 98195, USA.
Geroscience
|April 17, 2021
Summary
Mitochondrial dysfunction may drive aging, but the role of the protonmotive force (PMF) remains unclear. Further research is needed to determine if reduced PMF causes aging and to develop energetic interventions.
Area of Science:
- Cellular Biology
- Aging Research
- Mitochondrial Biology
Background:
- Mitochondria generate cellular energy (ATP), and their dysfunction is linked to aging.
- Hallmarks of aging may stem from impaired mitochondrial function and reduced energy production.
- The protonmotive force (PMF) powers mitochondria, but its age-related decline is poorly understood.
Purpose of the Study:
- To review mitochondrial function and its age-related changes.
- To summarize how PMF changes with age across different models.
- To highlight research linking PMF to aging and identify future research barriers.
Main Methods:
- Literature review and synthesis of existing studies on mitochondrial function and aging.
- Analysis of data on PMF decline in various experimental aging models.
- Identification of technological and conceptual challenges in studying mitochondrial energetics and aging.
Main Results:
- Mitochondrial dysfunction is implicated in cellular aging processes.
- PMF decreases with age in several experimental models, but its causal role in aging is undetermined.
- Current research highlights the importance of PMF in aging biology.
Conclusions:
- Understanding the precise role of PMF in aging is crucial for developing interventions.
- Emerging technologies will enable better in vivo studies of mitochondria and aging.
- Energetics-based strategies hold potential for preventing or reversing age-related functional decline.
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