Cited by 219Sleep and Wakefulness ResearchEndoplasmic Reticulum Stress and DiseaseSleep and Work-Related Fatigue

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Sleep deprivation induces the unfolded protein response in mouse cerebral cortex

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Naidoo, Nirinjini, Giang, William, Galante, Raymond J., Pack, Allan I.·2005·Journal of Neurochemistry

Abstract

Little is known about the molecular mechanisms underlying sleep. We show the induction of key regulatory proteins in a cellular protective pathway, the unfolded protein response (UPR), following 6 h of induced wakefulness. Using C57/B6 male mice maintained on a 12:12 light/dark cycle, we examined, in cerebral cortex, the effect of different durations of prolonged wakefulness (0, 3, 6, 9 and 12 h) from the beginning of the lights‐on inactivity period, on the protein expression of BiP/GRP78, a chaperone and classical UPR marker. BiP/GRP78 expression is increased with increasing durations of sleep deprivation (6, 9 and 12 h). There is no change in BiP/GRP78 levels in handling control experiments carried out during the lights‐off period. PERK, the transmembrane kinase responsible for attenuating protein synthesis, which is negatively regulated by binding to BiP/GRP78, is activated by dissociation from BiP/GRP78 and by autophosphorylation. There is phosphorylation of the elongation initiation factor 2α and alteration in ribosomal function. These changes are first observed after 6 h of induced wakefulness. Thus, prolonging wakefulness beyond a certain duration induces the UPR indicating a physiological limit to wakefulness.

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  • The eIF2α-P/UPR pathway is also induced during sleep deprivation of wild type mice, providing an additional mechanistic explanation through which improving disturbances in sleep may be neuroprotective.

    “the eIF2 𝛂 -P/UPR pathway is also induced during sleep deprivation of wild type mice, providing an additional mechanistic explanation through which improving disturbances in sleep may be neuroprotective [45]”

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Metadata

Authors
Naidoo, N., Giang, W., Galante, R. J., & Pack, A. I.
Affiliations
University of Pennsylvania (US)
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2005-02-04
Volume
92
Issue
5
Pages
1150-1157
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1491392377
Cited by
219
References
4
Citations by year
2026: 11 · 2025: 8 · 2024: 15 · 2023: 14 · 2022: 13 · 2021: 8 · 2020: 10 · 2019: 14 · 2018: 10 · 2017: 11 · 2016: 12 · 2015: 6 · 2014: 13 · 2013: 12 · 2012: 9
FWCI
4.20
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (P01AG017628)
  • National Heart, Lung, and Blood Institute (P50HL060287, U01HL066588)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
sleep deprivation, unfolded protein response, cerebral cortex, BiP/GRP78, PERK, eIF2α phosphorylation, prolonged wakefulness, endoplasmic reticulum stress, ribosomal function, autophosphorylation, molecular chaperones
MeSH terms
Endoplasmic Reticulum Chaperone BiP, Animals, Cerebral Cortex, DNA-Binding Proteins, Gene Expression Regulation, Heat-Shock Proteins, Male, Mice, Inbred C57BL, Phosphorylation, Polyribosomes, Protein Denaturation, Sleep Deprivation, Time Factors, Transcription Factors, Blotting, Western, Molecular Chaperones, eIF-2 Kinase, Immunoprecipitation, Mice

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