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Updated: Jul 20, 2026
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High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster
Published on: October 20, 2023
A Drosophila model for age-associated changes in sleep:wake cycles
Kyunghee Koh1, Joshua M Evans, Joan C Hendricks
1Howard Hughes Medical Institute, Department of Neuroscience, School of Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
Summary
Aging disrupts sleep patterns in fruit flies, showing decreased sleep consolidation and increased fragmentation. These changes are linked to physiological aging and oxidative stress, not just chronological age.
Area of Science:
- Gerontology
- Neuroscience
- Chronobiology
Background:
- Sleep consolidation declines with age in humans, a poorly understood phenomenon.
- The fruit fly, Drosophila melanogaster, is a robust model for studying aging and behavior.
Purpose of the Study:
- To investigate the impact of aging on sleep-wake cycles in Drosophila.
- To determine if age-related sleep changes are linked to physiological or chronological age.
Main Methods:
- Assaying flies of various ages.
- Continuous monitoring of individual flies throughout their lifespan.
- Manipulating ambient temperature to alter lifespan.
- Treating flies with paraquat to induce oxidative stress.
Main Results:
- Sleep-wake cycle strength decreased and sleep became more fragmented with age in Drosophila.
- Temperature manipulations affecting lifespan also altered sleep-wake cycle dynamics, indicating physiological age dependence.
- Paraquat treatment mimicked age-related sleep disruption, suggesting a role for oxidative damage.
Conclusions:
- Drosophila is a valuable model for studying age-associated sleep fragmentation and rhythm disruption.
- Changes in sleep-wake cycles are an integral part of the physiological aging process.
- Oxidative damage accumulation may contribute to age-related sleep changes.
