Dietary restriction and the transcription factor clock delay eye aging to extend lifespan in Drosophila Melanogaster

TitleDietary restriction and the transcription factor clock delay eye aging to extend lifespan in Drosophila Melanogaster
Publication TypeJournal Article
Year of Publication2022
AuthorsHodge BA, Meyerhof GT, Katewa SD, Lian T, Lau C, Bar S, Leung NY, Li M, Li-Kroeger D, Melov S, Schilling B, Montell C, Kapahi P
JournalNat Commun
Volume13
Issue1
Pagination3156
Date Published2022 06 07
ISSN2041-1723
KeywordsAnimals, Circadian Rhythm, Drosophila melanogaster, Drosophila Proteins, Eye, Gene Expression Regulation, Longevity, Transcription Factors
Abstract

Many vital processes in the eye are under circadian regulation, and circadian dysfunction has emerged as a potential driver of eye aging. Dietary restriction is one of the most robust lifespan-extending therapies and amplifies circadian rhythms with age. Herein, we demonstrate that dietary restriction extends lifespan in Drosophila melanogaster by promoting circadian homeostatic processes that protect the visual system from age- and light-associated damage. Altering the positive limb core molecular clock transcription factor, CLOCK, or CLOCK-output genes, accelerates visual senescence, induces a systemic immune response, and shortens lifespan. Flies subjected to dietary restriction are protected from the lifespan-shortening effects of photoreceptor activation. Inversely, photoreceptor inactivation, achieved via mutating rhodopsin or housing flies in constant darkness, primarily extends the lifespan of flies reared on a high-nutrient diet. Our findings establish the eye as a diet-sensitive modulator of lifespan and indicates that vision is an antagonistically pleiotropic process that contributes to organismal aging.

DOI10.1038/s41467-022-30975-4
Alternate JournalNat Commun
PubMed ID35672419
PubMed Central IDPMC9174495
Grant ListR01 EY008117 / EY / NEI NIH HHS / United States
S10 OD016281 / OD / NIH HHS / United States
R01 AI169386 / AI / NIAID NIH HHS / United States
F31 EY033179 / EY / NEI NIH HHS / United States
T32 AG000266 / AG / NIA NIH HHS / United States
R01 AG038688 / AG / NIA NIH HHS / United States
R01 DC007864 / DC / NIDCD NIH HHS / United States