OrganismCaenorhabditis elegans
Aging PhenotypeLife-span extension
Allele TypeRNAi
DescriptionRNAi of cyc-1 by bacterial feeding increases life-span by 67% (Dillin et al., 2002). RNAi of cyc-1 during larval stages is necessary and sufficient for increased life-span. RNAi of cyc-1 only during adulthood fails to extend life-span.
Gene FunctionComponent of mitochondrial complex III (cytochrome c reductase).
Other PhenotypesRNAi of cyc-1 results in reduced pharyngeal pumping, defecation, and motility. ATP levels are reduced by 60- 80% in cyc-1 animals and body size is reduced (Dillan et al., 2002).
Mutation of daf-16 fails to prevent life-span extension by RNAi of cyc-1 and mutation of daf-2 further extends the life span of cyc-1 RNAi animals.
HomologsH.s. CYC1
Primary ReferenceDillin, A., Hsu, A. L., Arantes-Oliveira, N., Lehrer-Graiwer, J., Hsin, H., Fraser, A. G., Kamath, R. S., Ahringer, J., and Kenyon, C. (2002). Rates of behavior and aging specified by mitochondrial function during development. Science 298, 2398-401. [Abstract]
Other References
Relevant LinksWormBase:
Keywordsmitochondria, oxidative stress, metabolism, worm, ATP, respiration, electron transport chain, oxidative stress, ROS