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
    CLN3 CycLiN 3 Overexpression shortens chronological lifespan together with age-dependent increases in genome instability and apoptosis. While around 80% of wild-type cells are alive almost non CLN3 overexpressers are alive (under condition that avoids adaptive regrowth) [17710147]. Budding yeast
    cup-4 Coelomocyte UPtake defective 4 cup-4 RNAi or overexpession reduces oxidative stress resistance and shortens lifespan of wild-type under AL. cup-4 RNAi significantly reduces the extended lifespan of eat-2 mutants, but failed to block lifespan extension of age-1 or clk-1 mutants. Lifespan of cup-4 mutants increases only moderately by sDR [19783783]. Nematode
    AFG3 ATPase Family Gene 3 Deletion of the mitochondrial AAA protease AFG3 increases replicative lifespan by 20% in the alpha and a strains [18340043], but decreases chronological lifespan by 37 - 51% in diploid cells [21447998]. AFG3 deletion changes mean, median and maximum lifespan by 15 to 26% 17 to 30% and -25 to +58%, respectively. AFG3 deletion leads to reduced cytoplasmic mRNA translation and its lifespan extension is independent of Sir2 and Hac1, but requires Gcn4. AFG3 deletion further extends the lifespan of cell deficient in both SIR2 and FOB1, but fails to extend the lifespan of dietary restricted cells or cells lacking GCN4. Gcn4 protein levels are increased in afg3 mutants. The deletion of AFG3 fails to extend the replicative lifespan in the W303AR strain. AFG3 deletion does deletion extend the replicative lifespan at 15°C. Budding yeast
    lin-14 abnormal cell LINeage 14 A loss-of-function mutation in lin-14 extends lifespan by 31% while a gain-of-function mutation decreases lifespan. The life-extending effects is dependent on daf-16 and hsf-1. Also, lin-14 is a target of lin-4 [16373574]. lin-14(n719) mutation extends mean and maximum lifespan of control animals by 20 and 67%, respectively [23097426]. Knockdown of lin-14 only during adulthood is sufficient to extend lifespan and suppresses the short lifespan phenotype of lin-4 mutants. Nematode
    mir-239 Mutating mir-239 increases mean and maximum lifespan by 12 and 36%, respectively, whereas overexpressing mir-239 decreases mean and maximum lifespan by 13 and 17 - 33%, respectively [21129974]. Nematode
    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
    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
    Factors are an extension of GenAge and GenDR.

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