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
    MSN2 Multicopy suppressor of SNF1 mutation 2 Deletion of MSN2 and MSN4 extends replicative lifespan and is further extended by cyr1::mTn [14741356]. Deletion of MSN2 and MSN4 does not significantly decrease chronological lifespan under AL, but attenuates chronological lifespan extension by water starvation and 0.5% glucose restriction [18225956] as well as cancels out lifespan extension of cyr1::mTn [14741356] and decreases chronological lifespan extension of ras2 deletion mutant [12586694]. Simultaneous deletion of MSN2 and MSN4 has no effect on chronological lifespan, but prevents lifespan extension by RAS2 deletion [12586694]. msn2 msn4 has no effect on replicative lifespan in PSY316, and does not prevent lifespan extension by DR [11000115] or by high osmolarity [12391171]. Budding yeast
    MSN4 Multicopy suppressor of SNF1 mutation 4 Deletion of MSN2 and MSN4 extends replicative lifespan and is further extended by cyr1::mTn [14741356]. Deletion of MSN2 and MSN4 does not significantly decrease chronological lifespan under AL, but attenuates chronological lifespan extension by water starvation and 0.5% glucose restriction [18225956] as well as cancels out lifespan extension of cyr1::mTn [14741356] and decreases chronological lifespan extension of ras2 deletion mutant [12586694]. Simultaneous deletion of MSN2 and MSN4 has no effect on chronological lifespan, but prevents lifespan extension by RAS2 deletion [12586694]. msn2 msn4 has no effect on replicative lifespan in PSY316, and does not prevent lifespan extension by DR [11000115] or by high osmolarity [12391171]. Budding yeast
    OPT2 OligoPeptide Transporter 2 OPT2 deletion increases mean and maximum replicative lifespan by 23 and 9%, respectively, and cancels out the lifespan-extending effect of DR [22912585]. Budding yeast
    SWH1 SWH1 (alias OSH1) deletion mutants have an extended replicative lifespan (p=0.02) and DR does not increase the long lifespan of SWH1 deletion mutants [Xia et al. unpublished]. Budding yeast
    HES1 Homologous to kES1 1 Deletion of HES1 (alias OSH5) extends replicative lifespan and is non-additive with moderate DR. Elevation of OSH5 levels by an ERG6 promoter reduces mean, median and maximum replicative lifespan by 25, 18 and 29%. HES1 is required for the longevity effect of DR, Perg6-OSH6, Perg6-ERG2 and Perg6-OSH7 (genetic mimetics of DR). Hes1 is upregulated in response to sterol down-regulation including DR. Deletion of OSH5 delays different steps of endocytosis, a sterol-requireing process [Xia et al., unpublished]. Perg6-OSH6 osh5 double mutant have a lifespan significantly shorter than that of Perg6-OSH6 [Xia et al. upublished]. Budding yeast
    RCR2 Resistance to Congo Red 2 RCR2 deletion extends mean replicative lifespan by 18% and cancels out the lifespan extending effect of DR [22912585]. Budding yeast
    FRE6 Ferric REductase 6 FRE6 deletion increases mean replicative lifespan by 14% and cancels out the lifespan extending effect of DR [22912585]. Budding yeast
    rab-10 RAB family rab-10 RNA interference significantly extends lifespan of wild-type by 14 - 16%, of daf-16 mutants by 47%, and of daf-2 by 46%, but fails to significantly further extend lifespan of eat-2 mutants. rab-10 RNAi does not affect pumping, but similar to DR reduces and delays reproduction as well as cause a slender appearance. rab-10 mRNA is 2-fold downregulated in response to DR [16103914]. rab-10 RNAi significantly reduces paralysis in Q35YFP transgenic animals [18331616]. Nematode
    rheb-1 RHEB (Ras Homolog Enriched in Brain) hom rheb-1 RNAi extends lifespan by mimicking the DR effect. Under AL condition, rheb-1 RNAi extends lifespan by 19.1% and the longevity-promoting effects of two DR regimens sDR and intermittent fasting are abolished [19079239]. Knockdown of rheb-1 by RNAi only during the adulthood increases mean, median and 75th %ile lifespan by 18-25, 25 and 23-24%, respectively, but failed so in skn-1 or daf-16 mutant (with and without FUdR). Knockdown of rheb-1 dramatically enhances stress tolerance in an skn-1, but not daf-16-dependent manner [22560223]. Nematode
    hif-1 HIF (hypoxia inducible factor) homolog 1 hif-1 mutation does not suppress lifespan extension of bDR or eat-2 mutation [19372390]. hif-1 deletion extends lifespan by 24% and inhibition of hif-1 by RNAi also extends adult lifespan. hif-1 mutation extends lifespan under AL, but does not further extend lifespan extension under modified sDR. Activation of hif-1 by egl-9 deletion diminishes lifespan extension by modified sDR. hif-1 acts independent of insulin-like signaling: Lifespan extension by hif-1 suppression does not require DAF-16, because inhibition of hif-1 by RNAi extends lifespan of wild-type and daf-16 null mutant to a similar level. hif-1 RNAi further extends the lifespan of daf-2 mutants. hif-1 is in the TOR pathway, downstream of S6K/rsks-1: Inhibition of hif-1 by RNAi does not further extend lifespan of daf-15 heterozygous mutants. Lifespan extension by deletion mutant of rsks-1 is fully suppressed by egl-9 mutation. hif-1 mutation does not further extend rsks-1 lifespan. pha-4 RNAi slightly reduces lifespan in wild-type and hif-1 mutants, but hif-1 mutation extends lifespan of animals treated with control or pha-4 RNAi to a similar level [19461873]. Nematode
    elt-3 Erythroid-Like Transcription factor 3 Expression of elt-3 decreases with development and aging. elt-3 RNAi extends maximum lifespan and totally cancels out the daf-2 or DR-induced (eat-2) lifespan extension [18662544]. Nematode
    slcf-1 SoLute Carrier Family 1 slcf-1 RNAi or mutation extends the lifespan. slcf-1 mutation increases average lifespan by 40%. DR (by dilution of bacteria on solid medium or by bacterial deprivation) failes to extend slcf-1 mutant's long lifespan and lifespan is even reduced by lowering bacteria concentration (i.e. higher strength of DR) [21040400]. Nematode
    sams-1 S-Adenosyl Methionine Synthetase 1 sams-1 RNAi significantly extends lifespan of wild-type by 14 - 15%, of daf-16 mutant by 30% and daf-2 by 55%, but fails to significantly further extend lifespan of eat-2 mutants. mRNA level of sams-1 is 2-fold reduced in eat-2 mutants. Like DR, sams-1 RNAi reduces brood size and slightly reproductive timing as well as causes a slender phenotype [16103914]. sams-1 RNAi significantly reduces paralysis in Q35YFP transgenic animals [18331616]. Nematode
    ins-7 INSulin related 7 RNA interference of ins-7 extends the mean lifespan by 55% at 20 degree Celsius in N2 rrf-3(pk1426) [12845331]. ins-7 RNAi significantly extends lifespan under AL. Treating wild-type with 2% glucose produced pattern of gene expression that overlaps significantly with that produced by genetic inhibition of daf-16 activity in daf-2 mutants. This results in changes in expression of several insulin-like genes, including DAF-16 target gene ins-7. Addition of glucose triggers an increased ins-7:GFP expression. Glucose suppresses the extended lifespan by ins-7 RNAi [19883616]. RNAi of ins-7 does not further extend the lifespan in daf-2 mutants [12845331]. ins-7 is repressed in animals with reduced daf-2 activity and elevuated in animals with reduced daf-16 activity. Nematode
    drr-2 Dietary Restriction Response (WT but not eat-2 lifespan increased) 2 RNA interference of drr-2 extends lifespan [15998808]. drr-2 RNAi extends lifespan of wild-type by 10-16%, but fails to significantly extend lifespan of daf-2 mutants or eat-2 mutants. drr-2 RNAi keeps a normal, well-fed appearance and normal reproduction. drr-2 mRNA expression is 2-fold reduced in eat-2 mutants [16103914]. drr-2 RNAi significantly reduces paralysis in Q35YFP transgenic animals [18331616]. drr-2 overexpression suppresses lifespan extension by eat-2 mutation and solid plate-based DR [20456299]. Nematode
    drr-1 Dietary Restriction Response (WT but not eat-2 lifespan increased) 1 RNAi of drr-1 starting at L1 extends mean, 25%ile and median lifespan by 3, 8 and 8% [15998808]. drr-1 RNAi significantly extends mean lifespan of wild-type by 37 - 44%, of daf-16 mutants by 18%, and of daf-2 mutants by 14%, but does not extend significantly the lifespan of eat-2 mutants. drr-1 RNAi does not affect pumping, but similar to DR reduces and delays reproduction as well as causes a slender appearance. drr-1 mRNA is 2-fold downregulated in response to DR [16103914]. Nematode
    age-1 AGEing alteration 1 Recessive knockout mutants of age-1 have a 40-65% increase in mean lifespan and a 65-110% increase in maximum lifespan [8608934; 8700226]. age-1(mg44) zygotic null mutants have a mean (99%) and maximum (117%) lifespan extension [18828672]. Even in axenic culture lifespan of age-1 is extended up to 100%. age-1 mutation significantly extends lifespan under AL, but only slightly under sDR [16720740]. RNAi against age-1 extends lifespan by 30% [8700226; 8608934]. age-1 RNAi increases mean and maximum lifespan by 36-46% and 48-50% [12447374]. RNAi against age-1 increases mean lifespan by 83% [18828672]. age-1 mutants are dauer constitutive [8056303] and display lower brood size as well as increased embryonic lethality [9504918]. Additionally, age-1 mutants have elevated levels of superoxidase dismutase and catalase activities [8389142]. age-1 RNAi and mutation extend lifespan by 30% and 100%, respectively [8700226; 8608934]. Nematode
    F57A8.4 Protein F57A8.4 F57A8.4 encodes a rhodopsin-like G-protein coupled receptor that is known to sense light [11493519] and is downregulated in space. Mutation or RNA interference of F57A8.4 extends lifespan on NGM agar covered with killed or live bacteria as well as in liquid culture medium. F57A8.4 RNAi extends the mean, 75%ile and maximum lifespan by 34, 39, and 61%. F57A8.4(tm4341) mutation extends the mean, 75%ile, and maximum lifespan by 18-38, 21-25, and 42-68%. Lifespan extension by gar-3 mutation is not abolished by RNAi inactivation of either daf-16 nor skn-1. eat-2 RNAi shortens the lifespan of F57A8.4 mutants [22768380]. Mutation and RNAi of F57A8.4 suppresses pheromone-induced dauer formation [22768380]. Nematode
    cha-1 abnormal CHoline Acetyltransferase 1 cha-1 encodes a choline acetyltransferase which is expressed in motor [18041778] neurons and downregulated in space. Mutation or RNA interference of cha-1 extends lifespan on NGM agar covered with killed or live bacteria as well as in liquid culture medium [22768380]. cha-1(TY1652) mutation extends mean, 75%ile, and maximum lifespan by 23, 29, and 38%. The cha-1(PR1152) allele extends mean, 75%ile, and maximum lifespan by 22-49, 18-25, and 11-21%. Lifespan extension by cha-1 mutation is not abolished by daf-16 RNAi inactivation. eat-2 RNAi shortens the lifespan of cha-1 mutants. RNAi inactivation of cha-1 reduces Q35 aggregation [22768380]. cha-1 participates in determining pharyngeal pumping rate to affect food intake [6698395]. Nematode
    shk-1 SHaKer family of potassium channels 1 shk-1 encodes a shaker family of potassium channel which functions in muscle [21059759], is expressed in sensory neurons [16899454], and downregulated in space. Mutation or RNA interference of shk-1 extends lifespan on NGM agar covered with killed or live bacteria as well as in liquid culture medium. shk-1 RNAi extends mean, 75%ile, and maximum lifespan by 16, 15, and 22%. shk-1(RB1392) mutation extends mean, 75%ile, and maximum lifespan by 19-22, 19-21, and 20-24%. Lifespan extension by unc-17 mutation is totally abolished by RNAi inactivation of either daf-16 or skn-1. eat-2 RNAi shortens the lifespan of shk-1 mutants. RNAi inactivation of shk-1 reduces Q35 aggregation [22768380]. Mutation and RNAi of shk-1 enhance pheromone-induced dauer formation [22768380]. Nematode
    vit-5 VITellogenin structural genes (yolk protein genes) 5 RNA interference against vit-5 extends mean lifespan by 10-22%. vit-5 is differentially transcribed in daf-16 and daf-2 RNAi animals [12845331]. RNAi knockdown of vit-5 starting at hatching or only during the adulthood significantly extends lifespan of wild-type, but does not alter, or even shortens the lifespan of eat-2 mutants [22810224]. Nematode
    icl-1 IsoCitrate Lyase homolog 1 RNAi knockdown of icl-1 (alias gei-7) starting at hatching or only during the adulthood significantly extends lifespan of wild-type, but does not alter, or even shortens the lifespan of eat-2 mutants [22810224]. Nematode
    fat-2 FATty acid desaturase 2 RNAi knockdown of fat-2 starting at hatching or only during the adulthood significantly extends lifespan of wild-type, but does not alter, or even shortens the lifespan of eat-2 mutants. FAT-2 is downregulated in eat-2 [22810224]. Nematode
    unc-52 UNCoordinated 52 RNA interference of unc-52 in adulthood extends mean lifespan by 11% [17411345]. RNAi knockdown of unc-52 starting at hatching or only during the adulthood significantly decreases lifespan of eat-2 without affecting wild-type lifespan. UNC-52 levels are elevated in eat-2 mutants. Increased content of UNC-52 is, at least partially, required for lifespan-extension by DR [22810224]. Nematode
    hsp-12.6 Heat Shock Protein hsp-12.6 loss-of-function mutation significantly extends lifespan under AL and significantly suppresses intermittent fasting (IF)-induced increase in lifespan, to a similar extend to that of daf-16 mutation. HSP-12.6 expression is induced by fasting in various tissues, including body wall muscle and neuronal systems. hsp-16.2 is one of downstream targets of DAF-16 in IF-induced longevity. The extent of IF-induced longevity in daf-16 hsp-12.6 double mutant is similar to that of single hsp-12.6 or daf-16 mutants. hsp-12.6 and daf-16 function in same signaling pathway. Low insulin/IGF-like signaling in daf-2 results in constitutive activation of DAF-16 and higher expression of hsp-12.6 [19079239]. Expression of hsp-16.2 predicts longevity [13-18 in 22829775]. Nematode
    Factors are an extension of GenAge and GenDR.

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