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Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology
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Complex Regulation of Protocadherin Epigenetics on Aging-Related Brain Health
Vanessa Schmithorst1, Abha Bais2, Daryaneh Badaly3
1UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Department of Radiology.
Summary
Epigenetic changes in brain gene methylation, specifically protocadherin (PCDH) clusters, are linked to slower aging. This suggests epigenetic modifications may slow age-related cognitive and brain volume decline.
Area of Science:
- Neuroscience
- Genetics
- Epigenetics
Background:
- Aging is associated with declining quality of life, despite increased life expectancy.
- Genetic factors influence aging, suggesting potential for intervention.
- Epigenetic mechanisms offer a modifiable pathway to influence aging processes.
Approach:
- Analyzed epigenetic methylation in protocadherin (PCDH) gene clusters (PCDHA, PCDHB, PCDHG).
- Utilized data from over 1800 individuals in the Framingham Heart Study.
- Correlated methylation levels with rates of decline in brain white matter volume and cognitive skills.
Key Points:
- Reduced PCDHG methylation and elevated PCDHA/PCDHB methylation correlated with slower decline in regional white matter volume.
- Specific methylation patterns in PCDH clusters were associated with preserved cognitive function.
- These epigenetic effects were independent of overall aging rate estimated by DNA methylation clocks.
Conclusions:
- Epigenetic modulation of PCDH gene clusters influences brain aging.
- Targeted epigenetic modifications may offer a strategy to slow age-related decline in brain structure and cognitive abilities.
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