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
    daf-18 Abnormal DAuer Formation daf-18 is required for complete dauer formation. Overexpression increases adult lifespan in individual tissues [16153634]. daf-18 mutation partially suppresses the lifespan extension of age-1 and daf-2 mutants. daf-18 mutants are defective for dauer formation and form some dauer-like larvae when starved [7789761; 8601482]. Nematode
    Ef1alpha48D Elongation factor 1alpha48D Overexpression of Ef1alpha48D (transformed with a P-element vector and under control of hsp70 regulatory sequences) results in lifespan extension by 18-41%. The decrease in protein synthesis that accompanies aging is preceded by a decrease in EF-1 alpha protein and mRNA [2508089]. Fruit fly
    Eip71CD Ecdysone-induced protein 28/29kD Overexpression of Eip71CD (alias MsrA) in nervous system extends the lifespan by up to 70%, increased resistance to oxidative stress, and delays the onset of senescence-induced decline in activity levels and reproductive capacity. Eip71CD is a downstream effector of foxo [22310715]. Mean and maximum lifespan is increased by up to 2-% in animals that overexpress Eip71CD [20655917]. Fruit fly
    ERG2 ERGosterol biosynthesis 2 Overexpression of ERG2 with the promoter of ERG6 (Perg6-ERG2) extends replicative lifespan and this effect was overlapping with moderate DR, because DR can not extend the lifespan of this mutant [Tang et al., unpublished]. Perg6-ERG2 does not extend the lifespan significantly on normal medium, but it reverses the effect of DR. DR greatly shortens the lifespan of Perg6-ERG2 mutants. Perg6-ERG2 shortens the lifespan of nyv1 deletion mutations [Xia et al. unpublished]. Deletion of OSH5 greatly shortens the lifespan of Perg6-ERG2. SIR2 overxpression extends the lifespan of Perg6-ERG2 [Xia et al. unpublished]. Budding yeast
    EXO1 exonuclease 1 The rs1776180 C allele in the promoter of EXO1 is significantly enriched in female Germans centenarians and this can be replicated in 445 female French centenarians. The C allele leads to the loss of binding site for the basic helix-loop-helix transcription factor E47, resulting in higher EXO1 expression [19698732].EXO1 was found to be associated with longevity [19698732]. EXO1 was not found to be associated with longevity [23770741]. Human
    faah-1 Fatty Acid Amide Hydrolase 1 faah-1 overexpression reduces eicosapentaenoyl ethanolamide (EPEA), palmitoleyol ethanolamide, linoleyol ethanolamide, as well as arachidonoyl ethanolamide (AEA) levels, delays development, increases thermal stress resistance, and was associated with mean and maximum adult lifespan extension by 19 and 35%, respectively, in presence of abundant food but not under (two different protocols of) DR. Overexpression in pharynx was largely sufficient for this lifespan extension [21562563]. Nematode
    fabp fatty acid bindin protein Overexpression of fabp (CG6783) throughout the whole body increases mean, median and maximum lifespan by 77, 81 and 13%, increases stress resistant (to paraquat but not starvation), consistently reduces mortality rate across adult ages and reduces the lifespan extension of DR by 12% [22997544]. fabp overexpression increases the dFOXO nuclear localization in the fat-body. mRNA levels of dFOXO target genes l(2)efl and 4E-BP in the adult whole bodies increases in response to overexpression of fabp [22997544]. Females of the genotype Act-GS-Gal4 > UAS-CG6783 exhibit an increase in median lifespan compared to uninduced control in response to feeding with RU486-containing food from day 3 of adulthood (P < 0.0001). Mean lifespan is extended by 10, while maximum lifespan is decreased by 11% [22997544]. Fruit fly
    Fgf21 Fibroblast growth factor-21 Overproduction of Fgf-21 increases mean lifespan of males by 30% and that of females by 39% [23066506]. Mice overproducing Fgf21 are lean throughout their lives and remain lean even while eating slightly more than wild-type mice. Fgf21 overproducers tend to be smaller than wild-type mice and female mice were infertile. Although Fgf21 overproducers have significantly lower bone density than wild-type, Fgf21-abundant mice exhibit no ill effects from the reduced bone density and remain active into old age without any broken bones. Fgf21 seems to provide its health benefits by increasing insulin sensitivity and blocking the growth hormone/insulin-like growth factor-1 signaling. Fgf21 acts as a hormone, is secreted by the liver during fasting and helps the body to adapt to starvation. House mouse
    fh frataxin homolog Overexpression of fh in the mitochondria of female transgenic animals increases antioxidant capability, resistance to oxidative stress insults, and longevity [18258192]. Fruit fly
    FIS1 fission 1 (mitochondrial outer membrane) homolog (S. cerevisiae) Deletion of FIS1 prolongs significantly mean and maximum lifespan by 13 and 29% as well as improves the fitness of old mother cells (in BY4741) [17173038]. Budding yeast
    foxo Forkhead box, sub-group O foxo overexpression extends lifespan. Activation of foxo in the adult pericerbral fat body is sufficient for lifespan extension [15175753]. Overexpression of foxo in the adult adipose tissue alone prolongs lifespan [15192154; 15175753]. Limited activation of foxo reduces the expression of Drosophila insulin-like peptide dilp-2 synthesized in neurons and, represses endogenous insulin-dependent signaling in peripheral fat body [15175753]. foxo is not required for DR, but its activity modulates the response. foxo null mutants are highly and significantly shorter-lived than wild-type on all food dilutions apart from 0.1 SY and under starvation. foxo null mutants are not more sensitive to starvation than wild-type. foxo overexpression in adult fat body under normal nutritional conditions leads to extension of lifespan of females and causes a right shift of the response curve of lifespan to DR [18241326]. Overexpression of dFOXO in adult fat body increases median, by 21-33%, and maximum lifespan as well as lowers the age-specific mortality at all ages, in two independent experiments. Overexpression of dFOXO increases lifespan by lowering the whole mortality trajectory, with no effect on slope (similar to DR). Initiation of dFOXO expression at different ages increases subsequent lifespan with the magnitude of increase decreasing as the animals were put on RU486 (which activates the foxo transgene via UAS) at older ages. The effects of removal of dFOXO overexpression at different ages closely mirrored those of induction of expression and produce shortest lifespan observed in animals taken of RU486 at the earlier ages [17465980]. Fruit fly
    Fwd four wheel drive Overexpression of Fwd (from a doxycline-inducible promoter) increases mean lifespan by 7-9% [12620118]. Fwd regulates actin organization and ring canal formation during germline cytokinesis [10934029] by catalysing the first step in the synthesis of the key regulatory membrane phsopholipid PIP2, which is generated from PIP by a PI 4,5-kinase. Fruit fly
    Gadd45 growth arrest and DNA damage-inducible gene 45 Gadd45 overexpression in the nervous system leads to a significant increase of lifespan without a decrease in fecundity and locomotor activity. The lifespan extension effect is more pronounced in males than in females. Additional maximum lifespan is also extended. The maximum lifespan is increased by 50% and 59% for females and males, respectively. The median lifespan is extended by 46 and 77% for females and males, respectively [22661237]. Fruit fly
    Gclc Glutamate-cysteine ligase catalytic subunit Overexpression of Gclc extends mean and maximum lifespan by up to 50% [16148000]. Fruit fly
    Gclm Glutamate-cysteine ligase modifier subunit Overexpression of Gclm extends the mean lifespan by up to 24% [16148000]. Fruit fly
    Ghr Growth hormone receptor Ghr knockouts (the so called Laron mice) are dwarfs with significantly extended lifespan by 40-50% [12933651]. Ghr-/- mice are significantly longer lived as Ghr+/+ or Ghr+/- mice (by 40-50%) in both females and males [10875265; 19370397]. 30% DR fails to affect overall survival, average or median long-lifespan of Growth hormone receptor knockout (GHRKO) mice and increased maximal lifespan only in females. Insulin sensitivity in GHRKO mutants is greater than in wild-type and is not further increased by DR [16682650]. Intermittent fasting also fails to extend the long lifespan of GHRKO mice [19747233]. Lifespan of mice with a deletion in the Ghr gene live almost 5 years [21123740]. In C57BL/6J this mutation increases life expectancy by 16 to 26% depending on gender [12933651] and in mice of mixed genetic background the increases amounted to 36-55% [9371826]. Serum levels of GH are elevated in mutant mice [9371826] and mutants are smaller than wild-type. IGF-1 and IGFBP-3 levels are also reduced in Ghr mutant mice [10875265]. The age-associated decline in memory retention is delayed in Ghr mutants [11336996]. Overexpression of a growth hormone antagonist (a mutated growth hormone that competes with the endogenous one) has no effect on lifespan [12933651]. House mouse
    gig gigas Overexpression of gig, also known as dTsc2, results in lifespan extension. Overexpression of dTsc2 increases mean lifespan by 20% and 12%, at 25°C and 29°C, respectively, and protects from deleterious effects of rich food, as if mimicking the effect of DR [15186745]. Overexpression of dTsc2 via a UAS promoter in the eye using the driver gmr-GAL4 or in the nervous system by using appI-GAL4 does not extend the lifespan. Using the drivers 24BGAL4 and PO188-GAL4, enhancer traps that are predominantly expressed in the muscle and fat results in mean lifespan extension of 27% and 37%, respectively, at 29°C [15186745]. Fat-specific drivers DJ634-GAL4 and PO163-GAL4 when used to overexpress dTsc2, also led to a mean lifespan extension of 22% and 31%, respectively, at 29°C [15186745]. Fruit fly
    GLaz Glial Lazarillo Overexpression of GLaz results in increased resistance to hyperoxia (100% O2) and a 29% extension of mean lifespan under normoxia. Lifespan was also extended 30-60% under starvation [16581512]. Loss-of-function mutation of GLaz which decreases its expression of GLaz results in shorter lifespan and decreased resistance to oxidative stress in males [16581513]. Fruit fly
    GstS1 Glutathione S transferase S1 GstS1 overexpression increases the mean lifespan by 33% [18059160]. Fruit fly
    GUT2 Glycerol UTilization 2 Overexpression of GUT2 extends replicative lifespan by 25% and does not synergize with 0.5% glucose restriction [18381895]. Budding yeast
    HAP4 Heme Activator Protein 4 Overexpression of HAP4 from the ADH1 promoter extends lifespan of PSY316 strain approximately 40% under growth conditions favoring fermentation (2% glucose). Overexpression of HAP4 increases replicative lifespan, but is non-additive with 0.5% glucose restriction in lifespan extension. Lifespan extension by HAP4 overexpression requires SIR2 [12124627]. HAP4 deletion suppresses replicative lifespan extension to 30% and 33% on 0.1% glucose and on elimination of non-essential amino acids, respectively [20178842]. HAP4 overexpressing cells demonstrate a transcriptional response resembling cells undergoing diauxic shift, consume more oxygen, and exhibit increased Sir2-dependent transcriptional silencing at telomeres and rDNA [12124627]. Budding yeast
    hebe Adult-specific overexpression of hebe increases the lifespan by 5-30% and modulates late-age female fecundity. Female and male mean lifespan is up to 11% and 24% higher [19011900]. Fruit fly
    hep hemipterous Overexpression of hey significantly extends median (50%) and maximum (25%) lifespan. A hypomorphic allele of hep (hep1) laerlgy prevents lifespan extension caused by puc heterozygosity [14602080]. Fruit fly
    HPR1 HyPerRecombination 1 Deletion of HPR1 decreases replicative lifespan [11756539] Budding yeast
    hsb-1 Heat Shock factor Binding protein hsb-1(cg116) mutation at 20 degree Celsius extends mean, 75%ile, and maximum lifespan by 57-60%, 52-59%, and 37-69%. Nematode
    Factors are an extension of GenAge and GenDR.

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