Cited by 1,341Sleep and Wakefulness ResearchNeuroscience of respiration and sleepCircadian rhythm and melatonin

Neural substrates of awakening probed with optogenetic control of hypocretin neurons

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Adamantidis, Antoine R., Zhang, Feng, Aravanis, Alexander M., Deisseroth, Karl, de Lecea, Luis·2007·Nature

Abstract

The neural underpinnings of sleep involve interactions between sleep-promoting areas such as the anterior hypothalamus, and arousal systems located in the posterior hypothalamus, the basal forebrain and the brainstem. Hypocretin (Hcrt, also known as orexin)-producing neurons in the lateral hypothalamus are important for arousal stability, and loss of Hcrt function has been linked to narcolepsy. However, it is unknown whether electrical activity arising from Hcrt neurons is sufficient to drive awakening from sleep states or is simply correlated with it. Here we directly probed the impact of Hcrt neuron activity on sleep state transitions with in vivo neural photostimulation, genetically targeting channelrhodopsin-2 to Hcrt cells and using an optical fibre to deliver light deep in the brain, directly into the lateral hypothalamus, of freely moving mice. We found that direct, selective, optogenetic photostimulation of Hcrt neurons increased the probability of transition to wakefulness from either slow wave sleep or rapid eye movement sleep. Notably, photostimulation using 5-30 Hz light pulse trains reduced latency to wakefulness, whereas 1 Hz trains did not. This study establishes a causal relationship between frequency-dependent activity of a genetically defined neural cell type and a specific mammalian behaviour central to clinical conditions and neurobehavioural physiology.

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Crossref · 10.1038/nature06310

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  • Selective loss of hypocretin-producing neurons causes sleepiness and cataplexy in over 90% of patients with narcolepsy.

    “Selective loss of the hypocretin-producing neurons causes sleepiness and cataplexy in over 90% of patients with narcolepsy,5–9”

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Authors
Adamantidis, A. R., Zhang, F., Aravanis, A. M., Deisseroth, K., & de Lecea, L.
Affiliations
Stanford University (US)
Corresponding author
Deisseroth, Karl
Venue
Nature
Published
2007-10-17
Volume
450
Issue
7168
Pages
420-424
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2063210874
Cited by
1,341
References
4
Citations by year
2026: 41 · 2025: 55 · 2024: 53 · 2023: 57 · 2022: 65 · 2021: 69 · 2020: 70 · 2019: 65 · 2018: 95 · 2017: 90 · 2016: 83 · 2015: 94 · 2014: 81 · 2013: 90 · 2012: 97
FWCI
24.48
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Bern Open Repository and Information System (University of Bern) (submittedVersion)
Funders
National Institutes of Health (DP1OD000616)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
hypocretin neurons, orexin, sleep-wake transition, awakening, optogenetic stimulation, channelrhodopsin-2, lateral hypothalamus, arousal, sleep disorders, narcolepsy, slow-wave sleep, REM sleep, mouse behavior
MeSH terms
Orexins, Animals, Circadian Rhythm, Hypothalamus, Mice, Inbred C57BL, Mice, Transgenic, Neurons, Neuropeptides, Rhodopsin, Sleep, Sleep, REM, Wakefulness, Receptors, Neuropeptide, Patch-Clamp Techniques, Receptors, G-Protein-Coupled, Intracellular Signaling Peptides and Proteins, Mice, Orexin Receptors

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