Factors

We need to know every factor which determines lifespan.

Lifespan factors often but not always originate from defined genetic elements. They are not just genes, by definition they can be anything for which a Classifications schema can be build for that is related to the regulation of lifespan, such entities may include Single-Nucleotide Polymorphism, transcript variants, proteins and their complexes, compounds (i.e. small molecules like metabolites and drugs), etc. A factor should be based on a defined molecular entity or genomic position and been classified. It shall be highly flexible and scalable Concept.

While individual lifespan factors within each species or precise defined molecular entities will be captured within the Lifespan App, Data Entries of the Data App may summarize for instance the relevance of each factor class (e.g. homologous group; chemical derivate of related structure and properties, etc.) as well as draw overall conclusions. o

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  • symbol name observation species
    CG3776 Both overexpression and underexpression of CG3776 (alias Jhebp29) reduces the mean lifespan, where the reduction in males is slightly higher. The lifespan of male flies with under- and overexpressed CG3776 is reduced by 38.8 and 42.6%, respectively when compared with Oregon R flies.The lifespan of female flies with under- and overexpressed CG3776 is reduced by 31.6 and 35%, respectively when compared to Oregon R flies. Among the males and females, relatively to Oregon R and EP835/CyO, the age-specific survival of EP835/EP835 and EP835/Gal4 is reduced in both log-rank and Wilcoxon tests (P < 0.001); survival of EP835/EP835 and EP835/Gal4 differed using the log-rank-test (male: P<0.001; female: P=0.027) [18275960]. Fruit fly
    kuk kugelkern Overexpression of kugelkern in the adult muscle results in a 60% reduction of mean lifespan [18494863]. Fruit fly
    LBR Lamin B receptor Overexpression of Lamin B receptor in the adult muscle and in the abdominal fat body results in a 54% and 46% reduction of mean lifespan, respectively [18494863]. Fruit fly
    Lnk Loss of Lnk function results in increased median (14% in females and 17.5 in males) and maximum lifespan, reduced female fecundity and improves survival under conditions of oxidative stress and starvation. Heterozygousity does not result in any significant differences in lifespan in either males or females. Moreover, lifespan extension in one of the female homozygous mutant is fully rescued by the introduction of a Lnk genomic rescue construct [20333234]. Fruit fly
    Loco locomotion defects Reduced expression of Loco due to hetero-deficient results in a 17-20% longer mean lifespan for both male and females, besides the fact that the homozygous deficiency of loco is lethal. Several of these long-lived mutants are more resistant to stresses such as starvation, oxidation and heat. Additionally, mutants have higher Manganese-containing superoxide dismutase (MnSOD) activity, increased fat content an diminished cAMP levels. Loco's RGS domain is required for the regulation of longevity as deletion analysis suggest [21776417]. Fruit fly
    snz snazarus Mutation in snz increases maximum lifespan of both sexes by up to 66%, while the median female lifespan is approximately 85% higher and that of males around 72% [18478054]. Fruit fly
    mir-277 Constitutive miR-277 expression shortens lifespan and synthetically lethal with reduced insulin signaling, indicating that metabolic control underlies this phenotype. Transgenic inhibition with a miRNA sponge construct also shortens lifespan [23669073]. miR-277 is downregulated during adult life [23669073]. mir-277 controls branched-chain amino acid catabolism and as a result it can modulate the activity of TOR kinase [23669073]. Fruit fly
    Orco Odorant receptor co-receptor Loss-of-function mutation in Orco (alias Or83b) results in olfactory defects, altered adult metabolism, enhanced stress resistance, and life-extension. Fully fed female homozygous Or83b null mutants exhibit a 56% increase in median lifespan and a 30% increase in maximum lifespan. Males are also significantly longer-lived, though to a smaller degree and maximum lifespan is not extended. Heterozygous mutants of both sexes show an intermediate longevity. Lifespan of homozygous Orco null mutants is further increased by DR, but the relative increase in median and mean longevity is significantly greater when mutants were maintained in well-fed conditions [17272684]. Fruit fly
    Factors are an extension of GenAge and GenDR.

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