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Screening of sleep assisting drug candidates with a Drosophila model

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  • Yan-Ying Wang
  • Wei-Wei Ma
  • I-Feng Peng

Abstract

Lately, Drosophila has been favored as a model in sleep and circadian rhythm research due to its conserved mechanism and easily manageable operation. These studies have revealed the sophisticated parameters in whole-day sleep profiles of Drosophila, drawing connections between Drosophila sleep and human sleep. In this study, we tested several sleep deprivation protocols (mechanical shakes and light interruptions) on Drosophila and delineated their influences on Drosophila sleep. We applied a daytime light-deprivation protocol (DD) mimicking jet-lag to screen drugs that alleviate sleep deprivation. Characteristically, classical sleep-aid compounds exhibited different forms of influence: phenobarbital and pentobarbital modified total sleep time, while melatonin only shortened the latency to sleep. Such results construct the basis for further research on sleep benefits in other treatments in Drosophila. We screened seven herb extracts, and found very diverse results regarding their effect on sleep regulation. For instance, Panax notoginseng and Withania somnifera extracts displayed potent influence on total sleep time, while Melissa officinalis increased the number of sleep episodes. By comparing these treatments, we were able to rank drug potency in different aspects of sleep regulation. Notably, we also confirmed the presence of sleep difficulties in a Drosophila Alzheimer’s disease (AD) model with an overexpression of human Abeta, and recognized clear differences between the portfolios of drug screening effects in AD flies and in the control group. Overall, potential drug candidates and receipts for sleep problems can be identified separately for normal and AD Drosophila populations, outlining Drosophila’s potential in drug screening tests in other populations if combined with the use of other genetic disease tools.

Suggested Citation

  • Yan-Ying Wang & Wei-Wei Ma & I-Feng Peng, 2020. "Screening of sleep assisting drug candidates with a Drosophila model," PLOS ONE, Public Library of Science, vol. 15(7), pages 1-17, July.
    • Handle: RePEc:plo:pone00:0236318
    DOI: 10.1371/journal.pone.0236318
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    References listed on IDEAS

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    1. Paul J. Shaw & Giulio Tononi & Ralph J. Greenspan & Donald F. Robinson, 2002. "Stress response genes protect against lethal effects of sleep deprivation in Drosophila," Nature, Nature, vol. 417(6886), pages 287-291, May.
    2. Paul T E Cusack, 2020. "The Human Brain," Biomedical Journal of Scientific & Technical Research, Biomedical Research Network+, LLC, vol. 31(3), pages 24261-24266, October.
    3. Steven M. Reppert & David R. Weaver, 2002. "Coordination of circadian timing in mammals," Nature, Nature, vol. 418(6901), pages 935-941, August.
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