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The natural Disc1-deletion present in several inbred mouse strains does not affect sleep
Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Sigmund-Freud-Str, 27 53127, Bonn, Germany.
Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Sigmund-Freud-Str, 27 53127, Bonn, Germany.
Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Sigmund-Freud-Str, 27 53127, Bonn, Germany.
2017 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, no 1, article id 5665Article in journal (Refereed) Published
Abstract [en]

The gene Disrupted in Schizophrenia-1 (DISC1) is linked to a range of psychiatric disorders. Two recent transgenic studies suggest DISC1 is also involved in homeostatic sleep regulation. Several strains of inbred mice commonly used for genome manipulation experiments, including several Swiss and likely all 129 substrains, carry a natural deletion mutation of Disc1. This constitutes a potential confound for studying sleep in genetically modified mice. Since disturbed sleep can also influence psychiatric and neurodegenerative disease models, this putative confound might affect a wide range of studies in several fields. Therefore, we asked to what extent the natural Disc1 deletion affects sleep. To this end, we first compared sleep and electroencephalogram (EEG) phenotypes of 129S4 mice carrying the Disc1 deletion and C57BL/6N mice carrying the full-length version. We then bred Disc1 from C57BL/6N into the 129S4 background, resulting in S4-Disc1 mice. The differences between 129S4 and C57BL/6N were not detected in the 129S4 to S4-Disc1 comparison. We conclude that the mutation has no effect on the measured sleep and EEG characteristics. Thus, it is unlikely the widespread Disc1 deletion has led to spurious results in previous sleep studies or that it alters sleep in mouse models of psychiatric or neurodegenerative diseases.

Place, publisher, year, edition, pages
Nature Publishing Group, 2017. Vol. 7, no 1, article id 5665
National Category
Medical Genetics
Identifiers
URN: urn:nbn:se:liu:diva-146266DOI: 10.1038/s41598-017-06015-3PubMedID: 28720848OAI: oai:DiVA.org:liu-146266DiVA, id: diva2:1195546
Available from: 2018-04-05 Created: 2018-04-05 Last updated: 2018-04-13Bibliographically approved

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