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
    lin-4 abnormal cell LINeage 4 A loss-of-function mutation in lin-4 shortens lifespan and accelerated tissue ageing while overexpressing lin-4 extends lifespan by redarding aging [16373574]. lin-4 is regulated by DAF-16 in L1 arrest. Nematode
    aak-2 AMP-Activated Kinase 2 AAK-2 could be a sensor that couples energy levels and insulin-like signals to lifespan. aak-2(ok524) knockout mutants have a 12% and 18% shorter mean and maximum lifespan, respectively as well as faster age-dependent accumulation of a lipofuscin-like fluorescent pigment in the intestine [15574588]. sDR increases AMP:ATP ratio. aak-2 mutation suppresses lifespan extension and delay of the decline in locomotor activity resulting from sDR. A constitutive active mutation of aak-2 is sufficient to cause increase stress resistance as well as to significantly extend lifespan. Both increased stress resistance and extended lifespan is reverted in daf-16 knockdown by RNAi. sod-3 mRNA is increased by constitutive active form of aak-2 and decreased by aak-2 mutation. The increase in sod-3 mRNA is dependent on expression of DAF-16. Worm and human AMPK phosphorylate DAF-16 (greatly enhanced by presence of AMP) at least in six residues (T166, S202, S314, S321, T463 and S466) [17900900]. aak-2 mutation cancels out the lifespan extension effect of sDR and PD, regardless of the concentration of bacteria or peptones. bDR significantly extends lifespan of aak-2 mutants, but to lesser extent than that of wild-type. eat-2 mutation extends the lifespan of aak-2 mutants to the same extent than that of wild-type. Resveratrol does not increase lifespan of aak-2 mutants [19239417]. daf-2(m577);aak-2(ok524) double mutant has a lifespan that is indistinguishable from those of aak-2(ok524) single mutant. Transgenic animals with a higher aak-2 gene dose live on average 13% longer with a maximum lifespan extension on up to 25% [15574588]. Nematode
    alg-1 Argonaute (plant)-Like Gene Adult-specific knockdown of the C. elegans argonaute-like gene 1 alg-1 results in shortened lifespan with a reduction in the mean and maximum lifespan by 9 - 16% and 14%, respectively [21810936]. Nematode
    aqp-1 AQuaPorin or aquaglyceroporin related 1 aqp-1 expression changes in response to glucose or glycerol. Similar to daf-16 and hsf-1 mutants, aqp-1 mutants were short-lived, and their short lifespan was not further decreased by glucose. Overexpression of aqp-1::GFP rescues short lifespan of aqp-1 deletion mutants and partially prevented glucose from shortening lifespan. Glucose or glycerol feeding downregulates aqp-1 in wild-type. In daf-16 and/or hsf-1 mutants aqp-1 is repressed and glucose feeding does not significantly affect its expression. aqp-1 mutation does not further decrease the short lifespan of daf-16 and/or hsf-1 mutants. aqp-1 transgene is expressed in pharynx and intestine (which behaves as entire endoderm of animal, including adipose tissues). Dietary glucose does not cause significant differences in levels of glucose or glycerol in wild-type vs. aqp-1 mutants [19883616]. Nematode
    bar-1 beta-catenin BAR-1 may play a role in regulating daf-16 during dauer formation, particularly in conditions of oxidative stress as it directly interaction with DAF-16 and loss of bar-1 reduces activity of DAF-16 in dauer formation and lifespan. Deletion of bar-1 reduces mean (44%) and maximal (18%) lifespan, which is to a similar degree as seen to daf-16 mutants [15905404]. SMK-1 is important DAF-16 modulation of lifespan and specific stress response [5]. Nematode
    cbp-1 CBP/p300 homolog 1 bDR and daf-2 mutation induce cbp-1 expression. There is no decrease in cbp-1 expression in whole C. elegans during aging. Overexpression of cbp-1 does not significantly affect lifespan. daf-16 RNAi and cbp-1 RNAi reduce average lifespan under AL to about the same extent. Inhibiting cbp-1 via RNAi by 50%, specifically in adult phase and completely blocks lifespan extension of DD, bDR as well as eat-2, glp-1 and clk-1 mutation, but only partially that of daf-2 mutation and not at all that of cold. cbp-1 RNAi completely blocks the lifespan increase by daf-2 mutation under bDR. cbp-1 RNAi blocks the delay of other age-related pathologies by bDR. cbp-1 RNAi prevents protective effects of bDR and accelerates ABeta42-related pathology. bDR significantly delays onset of paralysis even in presence of cbp-1 RNAi. cbp-1 RNAi specifically in adults completely blocks lifespan extension by three distinct protocols of DR (mutation of eat-2), partly by daf-2 mutation but not of cold and blocks the delay of other age-related pathologies by bDR. cbp-1 RNAi has no effect on lifespan in daf-16 hypomorphic mutants. Combining cbp-1 and daf-16 RNAi in wild-type produces similar lifespan as either alone. Resistance to oxidative stress is strikingly reduced by cbp-1 RNAi and cbp-1 RNAi attenuates the protection against oxidative stress by bDR. cbp-1 RNAi accelerates accumulation of autofluorescence, but has no effect on activity, egg laying, or pharyngeal pumping. cbp-1 RNAi does not block induction of daf-16 or hsf-1 by bDR, but does block the induction of DAF-16 target gene, sod-3, and HSF-1 target gene, sip-1 by bDR. cbp-1 RNAi blocks induction of sod-3 expression by daf-2 RNAi. cbp-1 RNAi does not block the increased Nile Red staining produced by daf-2 mutation, but enhanced Nile Red staining. cbp-1 RNAi blocks the effect of bDR on metabolic gene expression from glycolysis towards beta-oxidation. Drugs that enhance histone acetylation increase lifespan and reduce ABeta42-related pathologies, but these protective effects are completely blocked by cbp-1 RNAi. cbp-1 RNAi decreases H4 Lys 5 acetylation and blocks the extension of lifespan as well as delays the onset of paralysis by ABeta1-42 transgene under AL and bDR by sodium butyrate (NaB) and trichostatin (TSA). cbp-1 RNAi does produce dye-filling defects in all C. elegans amphid neurons (ASI, ADL, ASK, AWB, ASH, and ASJ) [19924292]. Nematode
    bec-1 BEClin (human autophagy) homolog 1 bec-1 is required for normal dauer morphogenesis and lifespan extension. Knockdown of bec-1 via RNA interference results in a shortened mean and maximum lifespan by 14 and 5% [12958363]. bec-1 RNAi does not significantly change the lifespan of wild-type, but completely suppresses the longevity phenotype of eat-2 mutation [17912023; 18282106] and prevents lifespan extension by daf-2(e1370) mutation [12958363]. bec-1 RNAi causes the formation of abnormal dauers in a daf-2(e1379) background [12958363]. Nematode
    bra-1 BMP receptor Associated protein family bra-1(nk1) mutation reduces mean lifespan by 6-25% [17900898]. Nematode
    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
    daf-3 abnormal DAuer Formation daf-3(mgDf90) mutation decreases mean lifespan by 0-16% and maximum lifespan by up to 9-21%. daf-3(mgDf90) decreases mean lifespan even by 19% [17900898]. Mutation of daf-3 results in a wild-type lifespan, but greatly extends the lifespan of the long-lived daf-9 mutant [11782415]. daf-3 mutations are dauer defective. Nematode
    daf-5 abnormal DAuer Formation daf-5(e1386) mutation reduces mean lifespan by 19% and maximum lifespan by 21% [17900898]. Nematode
    dcp-66 Deacetylase Complex Protein 66 dcp-66 RNAi shortens the mean lifespan by 29% and suppresses lifespan extension by isp-1 mutation, but does not significantly affect lifespan extension neither by eat-2 nor daf-2 mutation [22829775]. Nematode
    dct-11 DAF-16/FOXO Controlled, germline Tumor affecting 11 dct-11 stimulates the growth of gld-1 tumors. RNA interference of dct-11 increases mean lifespan up to 19% in a gld-1 mutant background and reduces mean lifespan by 10% in a wild-type background [17934462]. Nematode
    dct-18 DAF-16/FOXO Controlled, germline Tumor affecting 18 dct-18 stimulates the growth of gld-1 tumors. RNA interference of dc-18 increases mean lifespan up to 12% in a gld-1 mutant background and reduces mean lifespan by 8% in wild-type worms [17934462]. Nematode
    BNA6 Biosynthesis of Nicotinic Acid 6 Deletion of BNA6 (alias QPT1) has no effect on replicative lifespan and is not required for lifespan extension by DR, but is lethal with mutation of NPT1 [11000115]. Deletion of BNA6 decreases chronological lifespan [17110466]. Nematode
    scl-1 SCP-Like extracellular protein Downregulation of scl-1 by RNAi reduces slightly but reproducibly lifespan as well as stress resistance, similar to the effect of mutation in daf-16. scl-1 RNAi prevents lifespan extension associated with mutation of daf-2 or age-1. scl-1 contains several DAF-16 consensus binding elements within its predicted regulatory region and is a direct target for transcriptional activation by DAF-16. scl-1 mRNA levels increase highly in daf-2 and age-1 mutation, lowly in wild-type N2 and undetectable in daf-16 mutants. [12620193]. RNAi of scl-1 causes hat shock and UV sensitivity [12620193]. Nematode
    dpy-27 DumPY : shorter than wild-type 27 dpy-27 RNAi in the adulthood shortens mean and maximum lifespan by 24 and 25%, respectively [23144747]. Nematode
    dve-1 DVE (Defective proVEntriculus in Drosophila) homolog) 1 dve-1 RNAi attenuates lifespan extension by bDR, but only partially that of daf-2 mutation. dve-1 RNAi attenuates protection against oxidative stress by bDR. dve-1 expression is not induced by bDR [19924292]. Nematode
    gei-4 GEX Interacting protein 4 gei-4 RNAi in the adulthood reduces mean and maximum lifespan by 27 and 38% [23144747]. Nematode
    glp-1 abnormal Germ Line Proliferation glp-1(qu158) mutations result in defects in germ-line proliferation and extension of lifespan by about 30%, which requires daf-16 [11799246]. glp-1(bn18) mutation increases mean, median, 75th %ile and maximum lifespan by 27-37, 26-33, 24-29 and 35%, respectively [22560223]. glp-1(e2141) mutation increases mean (32%) and maximum (53%) lifespan [18828672]. Two alleles of glp-1 that cause overproliferation of gemrline cells, glp-1(oz112gf) and glp-1(q485), result in a shortened lifespan [11799246]. In glp-1 mutants, Z2 and Z3 generate only a few germ cells, which enter meiosis and differentiate as sperm [3677168]. Nematode
    him-6 him-6 mutants have a low brood size, a shortened lifespan, and an increased amount of germ-line apoptosis [16181657]. Nematode
    pash-1 PArtner of DroSHa (DRSH-1 interactor) Inactivation of DGCR8/pash-1 in nematode reduces lifespan apparently due to accelerated aging. This intervention abrogates (lin-14 mutation and jnk-1(OE)) and suppresses (eat-2 and glp-1 mutants) several lifespan extending interventions, but not that conferred insulin-like signalling inhibition (daf-2 mutant) [23097426]. pash-1 mutants have a decreased lifespan and display phenotypic and molecular signs of advantaged age earlier. pash-1(mj100) temperature sensitive loss-of-function mutation decreases (at the permissive temperature) mean and maximum lifespan by 31 and 71%, respectively. At the restrictive temperature pash-1 mutants are slightly short-lived with a mean and maximum lifespan reduction by 13 and 54%. Lifespan of pash-1 mutants is reduced by a 24h upshift to 25 degree Celsius at the young adult stage with (36 and 78% reduction mean and maximum lifespan, respectively) [23097426]. The rescue of pash-1 expression all tissues restored almost normal lifespan. Rescue specifically in hypodermis, pharynx muscle, gut had no effect on lifespan. Rescue in body wall muscle marginal extended the lifespan, while rescue specifically in the neurons significantly restored mean but not maximum lifespan. Lifespan was also restored by combined rescue in hypodermis and muscle [23097426]. Nematode
    cst-1 Caenorhabditis STE20-like kinase 1 Knockdown of cst-1 shortens lifespan and accelerates tissue aging while its overexpression extends lifespan and delays aging in a daf-16-dependent manner [16751106]. Nematode
    mir-71 Loss and gain-of-function of mir-71 decreases and increases lifespan, respectively [21129974]. mir-71 mutants have a reduced lifespan with 40% decrease in mean lifespan, while extra copies of mir-71 extend the lifespan with an increase in lifespan by 15 - 25% [22482727], Loss of mir-71 function suppresses the long lifespan of glp-1(e2141) mutants [22482727], During adulthood mir-71 is strongly expressed in the intestine, body wall muscles and neurons. mir-71 is upregulated in aging adults [22482727], Nematode
    mev-1 Abnormal MEthyl Viologen sensitivity Loss of function in mev-1 shortens lifespan to 66% of wild-type (i.e. by 34%) and accelerates accumulation of aging-associated biomarkers such as protein carboynls and fluorescent materials. mev-1 mutants are hypersensitive to raised oxygen concentrations and their lifespan decreases dramatically as oxygen concentrations increase [9716135]. Mutation of mev-1 results in paraquat sensitivity, slow grows, and low fecundity. mev-1 mutants have a 50% reduction in superoxide dismutase activt relatively to wild-type [2233820]. Nematode
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    • 25 of 103 factors
    Factors are an extension of GenAge and GenDR.

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