Summary
This thesis demonstrates that aging disrupts circadian regulation of the hippocampal proteome in mice, altering rhythmic expression of proteins linked to neurodegeneration and cognitive decline. Pharmacological modulation of the circadian clock (via PF-670462) in a transgenic Alzheimer's mouse model reversed hippocampal proteomic alterations, rescued working memory deficits, and normalized circadian behavioral rhythms, suggesting that circadian-targeted interventions — including light therapy — may offer therapeutic value in AD.
Key Findings
- Aging disrupted circadian regulation of the hippocampal proteome in middle-aged vs. young mice, with altered daily expression profiles of proteins implicated in neurodegeneration and hallmarks of aging.
- The circadian clock modifier PF-670462 reversed hippocampal proteomic alterations in AD-related and clock-regulated pathways in 3xTg-AD mice.
- PF-670462 treatment rescued working memory deficits in 3xTg-AD mice.
- PF-670462 normalized behavioral circadian rhythm disturbances in 3xTg-AD mice, providing in vivo proof of concept for direct circadian clock modulation as an AD therapeutic strategy.
Categories
Dementia & Elder Care: Investigates circadian clock dysfunction as a contributor to Alzheimer's disease pathology and evaluates clock-targeting therapeutic interventions in a transgenic AD mouse model.
Sleep & Circadian Health: Examines how aging disrupts circadian regulation of hippocampal processes, with implications for sleep disturbances and memory impairment in aging and AD.
The Science of Light: Provides mechanistic insight into circadian clock biology and its regulation of hippocampal proteome rhythms, relevant to chronobiological interventions including light-based therapies.
Author(s)
P Adler
Publication Year
2020
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The Science of Light
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