Circadian clock disruption promotes the degeneration of dopaminergic neurons in male Drosophila

Article Article scientifique Article Circadian clock disruption promotes the degeneration of dopaminergic neurons in male Drosophila eng 2023-09-22 2023-09-22 author Majcin Dorcikova Michaela 0000-0002-1704-0020 799713 author Duret Lou 983247 Département de génétique et évolution (Genev) (BIANI) author Pottie Emma 851040 Département de génétique et évolution (Genev) (BIANI) author Nagoshi Emi 0000-0002-6365-4074 535940 Département de génétique et évolution (Genev) (BIANI) 1-16 5908 10.1038/s41467-023-41540-y 37737209 2041-1723 PMC10516932 https://www.nature.com/articles/s41467-023-41540-y Sleep and circadian rhythm disruptions are frequent comorbidities of Parkinson’s disease (PD), a disorder characterized by the progressive loss of dopaminergic (DA) neurons in the substantia nigra. However, the causal role of circadian clocks in the degenerative process remains uncertain. We demonstrated here that circadian clocks regulate the rhythmicity and magnitude of the vulnerability of DA neurons to oxidative stress in male Drosophila . Circadian pacemaker neurons are presynaptic to a subset of DA neurons and rhythmically modulate their susceptibility to degeneration. The arrhythmic period ( per ) gene null mutation exacerbates the age-dependent loss of DA neurons and, in combination with brief oxidative stress, causes premature animal death. These findings suggest that circadian clock disruption promotes dopaminergic neurodegeneration. Dewey 590 The Georges and Antoine Claraz Foundation The Ernst and Lucie Schmidheiny SociÃ©tÃ© AcadÃ©mique de GenÃ¨ve Swiss National Science Foundation Molecular genetics of behavior: role of a putative regulator of the Wnt/Wingless signaling pathway in the generation of circadian behavioral rhythms 169548 CH Projects 44 Département de génétique et évolution 162 false Nature communications 14 cf189784-3d4a-4d1e-981f-c9535966baff Article (Published version) Public Article-scientifique-from-unpaywall.pdf 4382533 application/pdf CC BY-4.0 1818ca4babfca0aa8713458554309c77373fc9a8f2642943b6cb7caa2981cf1f openAccess Faculté des sciences / Section de biologie / Département de génétique et évolution

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Circadian clock disruption promotes the degeneration of dopaminergic neurons in male Drosophila	Nature communications			2023	56	124

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Duret, Lou