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The proteasome in brain aging
Jeffrey N Keller1, Jillian Gee, Qunxing Ding
1Department of Anatomy and Neurobiology, University of Kentucky, Lexington, KY 40536-0230, USA. jnkell0@pop.uky.edu
Ageing Research Reviews
|June 1, 2002
Summary
The proteasome, crucial for clearing damaged proteins in the brain, may decline with age. This decline could contribute to neurodegeneration and aging of the central nervous system (CNS).
Area of Science:
- Neuroscience
- Cell Biology
- Aging Research
Background:
- The proteasome is a key cellular machine for degrading proteins, essential for neuronal health.
- It clears oxidized, aggregated, and misfolded proteins, maintaining cellular homeostasis.
- Proteasome inhibition can cause neuron death, underscoring its vital role.
Purpose of the Study:
- To review current knowledge of the proteasome in the central nervous system (CNS).
- To describe age-related changes in proteasome biology.
- To discuss the potential contribution of these changes to CNS aging and neurodegeneration.
Main Methods:
- Literature review of studies on proteasome function and aging.
- Analysis of research linking proteasome activity to protein homeostasis.
- Synthesis of findings on age-related alterations in CNS proteasome biology.
Main Results:
- Proteasome activity is critical for preventing the accumulation of damaged proteins in neurons.
- Evidence suggests proteasome function may be altered during the aging process.
- These age-related alterations may contribute to neurodegenerative changes observed in the aging CNS.
Conclusions:
- Age-related declines in proteasome function are implicated in CNS aging.
- Impaired proteasome activity could drive protein oxidation, aggregation, and neurodegeneration.
- Understanding these changes is crucial for addressing age-related neurological decline.