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
    CG11015 CG11015 is translational upregulated upon DR. Under rich nutritional conditions lifespan of CG11015 RNAi treated animals is indistinguishable from that of controls, while upon DR, lifespan extension is diminished in males and females [19804760]. Fruit fly
    CG13890 Overexpression of CG13890 (DCI) throughout the whole body increases mean and median lifespan by 35 and 31%, but decreases maximum lifespan by 6%, increases stress resistant (to paraquat and starvation), consistently reduces the mortality rate across adult ages and reduces the lifespan extension of DR by 15% [22997544]. CG6783 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 CG6783 [22997544]. Fruit fly
    CG4389 CG4389 gene product from transcript CG4389-RA Muscle specific RNAi knockdown of CG489 which reduces its mRNA levels by 25-35%, significantly reduces the DR-dependent lifespan extension. CG4389 RNAi animals exhibit only 20% increase while controls display an lifespan increase by 123% upon DR [22768842]. Fruit fly
    CG5389 RNAi of complex V subunit CG5389 results in increased mean longevity under standard laboratory food conditions (3% yeast) in males. RNAi started from the development results in a mild lifespan increase in both sexes (3-11% in females and 3-8% in males). Post-developmental RNAi and silencing limited to neurons has variable effects with reduction in lifespan of up to 9% [19747824]. Under rich media conditions CG5389 knockdown throughout development and adulthood increases mean lifespan by 26% and abolished the lifespan extension by DR (started in the adulthood) in males. Suppression of CG5389 only during the adulthood either via RNAi by tub-GS or via oligomycin (a specific inhibitor of complex V) feeding prevents an increase in longevity under DR (started in the adulthood) in males [19968629]. Fruit fly
    CG7834 CG7834 gene product from transcript CG7834-RA Muscle specific RNAi knockdown of CG7834 which reduces its mRNA levels by 25-35%, significantly reduces the DR-dependent lifespan extension. CG7834 RNAi animals exhibit only a 14% increase compared to the 55% lifespan-increase in controls upon DR [22768842]. Fruit fly
    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
    chico Insulin receptor substrate-1 Mutation in chico extends mean, median, and maximum lifespan by 56%, 48%, and 42% in homozygotes and 44%, 36%, and 35% in heterozygotes. chico mutation produces dwarf, long-lived females at normal nutrition. Male heterozygous live 13% longer than wild-type, but male homozygous have a shortened lifespan [11292874]. Wild-type and chico mutant females have similar peak lifespan under DR, but the food concentration at which these are achieved is shifted to higher amounts. chico mutation induces a state equivalent to submaximal, DR-induced slowing of aging [11951037]. chico heterzoygous females have a reduced fecundity and homozygous recessive mutants are sterile. chico heterozygous mutants are resistant to starvation but not oxidative stress or temperature stress [11292874]. Fruit fly
    ckr-1 CholecystoKinin Receptor homolog 1 ckr-1 RNAi significantly reduces lifespan of eat-2 but not that of age-1 nor clk-1 mutants [19783783]. Nematode
    ckr-2 CholecystoKinin Receptor homolog 2 ckr-2 RNAi significantly reduces the lifespan of eat-2 but not that of age-1 nor clk-1 mutants [19783783]. Nematode
    clk-1 CLocK (biological timing) abnormality 1 Mutations in clk-1 slow down development and extend lifespan by 30%. Mutation of both clk-1 and daf-2 results in nearly 5-fold (500%) increase in lifespan [8638122]. Food restriction by eat-2 mutation does not further extend the long lifespan of clk-1 mutant [9789046]. DR and clk-1 mutations may extend lifespan by a similar process. DR by intermittent fasting (IF) significantly extends lifespan of clk-1 mutants, but to a lesser extent than that of wild-type [19079239]. clk-1 mutants do not respond to sDR-induced lifespan extension [19239417]. Overexpression of clk-1 shortens lifespan and is associated with increased mitochondrial activity [10202142]. Transgenic overexpression of mouse Coq7 reverts the extended lifespan of clk-1 mutants [11511092]. clk-1 encodes a enzyme participating in coenzyme Q synthesis [9020081; 11136229]. clk-1 mutants have a decreased pharyngeal pumping and may provoke volunteering DR [9789046]. Mutations in clk-1 are highly pleiotropic resulting in an average lengthing of embryonic development, post-embryonic development, and adult rhythmic behaviours such as defecation, swimming and pharyngeal pumping [7768437]. clk-1 mutants require coeznyme Q [11136229]. clk-1 protein binds the mitochondrial O(L) region and may regulate replication of mitochondrial DNA [11959146]. Nematode
    cpf-2 Cleavage and Polyadenylation Factor 2 RNA interference of cpf-2 decreases mean lifespan by 6% and suppresses lifespan extension by eat-2 mutation [22829775]. 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
    cup-5 Coelomocyte UPtake defective 5 cup-5 RNAi significantly decreases lifespan of eat-2 specifically, whereas lifespan of age-1 or clk-1 mutants are not affected [19783783]. Nematode
    CYR1 CYclic AMP Requirement 1 The CDC35-1 allele of the adenylate cyclase CYR1 confers a 75% extension of replicative lifespan at 25 degree Celsius [11000115]. Transposon-mutagenized CYR1 increases resistance to oxidants and extends chronological lifespan by up to 90%. Stress-resistance transcription factors Msn2/Msn4 and protein kinase Rim15 are required for this lifespan extension [11292860]. CYR1 mutation is assumed to act as genetic DR mimetic [11000115]. The CDC35-1 allele of the adenylate cyclase CYR1 confers a 75% extension of replicative lifespan at 25 degree Celsius [11000115]. cyr1-1 mutation extends median chronological lifespan by 28-47% and is non-addative with lifespan extension conferred by overxpression of human MAPK1 [17662940]. Budding yeast
    daf-16 Abnormal DAuer Formation DAF-16, fork head-related transcription factor (daf-16) Mutations in daf-16 suppresses life-extension caused by mutations in daf-2 [8247153]. daf-16 is required for lifespan extension by mutation of daf-2 or age-1 [8247153]. RNAi against daf-16 decreases lifespan of wild-type, daf-2 or glp-1 mutants [22509016; 16530050]. Loss of function alleles of daf-16 shorten lifespan, but some alleles have lifespan equal to wild-type [8247153]. daf-16 mutation significantly reduces lifespan under AL (-20%), but does not prevent lifespan extension by sDR. In another experiment daf-16 mutation totally suppresses lifespan extension by sDR [16720740]. sDR does not stimulate DAF-16 translocation to the nucleus, but daf-16 mutation cancels out the ability of sDR to extend lifespan and to delay the decline in locomotor activity [17900900]. DR by bacterial dilution extends lifespan of daf-16 mutants [17538612]. daf-16 mutation decreases lifespan under AL, but fails to prevent bDR to further extend lifespan [18331616]. IF-induced lifespan-extension by either 24h/48h/72h per 4 days is significantly diminished in null mutants of daf-16. All these regimens extend lifespan of daf-16 to a lesser extent than that of wild-type. daf-16 partially mediates IF-induced longevity [19079239]. Glucose or glycerol does not shorten lifespan of daf-16 mutants [19883616]. daf-16 mutation cancels out the lifespan extension effect of sDR and PD, regardless of the concentration of bacteria or peptones. bDR significantly extends lifespan of daf-16 mutants, but to a lesser extent than that of wild-type. eat-2 mutation extends the lifespan of daf-16 mutants to the same extent than that of wild-type. Resveratrol extends lifespan of daf-16 mutants [19239417]. daf-16 RNAi completely blocks the lifespan extension by daf-2 mutation, but only partially by bDR. daf-16 RNAi attenuates protection against oxidative stress by bDR. daf-16 expression is induced by bDR [19924292]. Knockdown of daf-16 decreases mean and maximum lifespan by 50% and 54%, respectively [22509016]. DAF-16 reduces expression of rsks-1 and daf-15 [15253933; 22560223]. daf-16(mgDf47) decreases mean (18-37%) and maximum (29%) lifespan [18828672]. Overexpression of wild-type DAF-16 modestly increases lifespan by 20% [11747825], while overexpression of constitutive nuclear forms of DAF-16 increases lifespan only slightly [11381260]. daf-16(mu86) mutation decreases mean (44%) and maximum (18%) lifespan [15905404]. daf-16(mgDf47) decreases mean (18-37%) and maximum (29%) lifespan [18828672]. daf-16 mutants are dauer defective [7219552] and completely suppress all the phenotypes of daf-2 and age-1 mutations, including lifespan extension, dauer arrest, reduced fertility, and viability defects [8247153; 7789761; 9504918; 7789761]. Mutations in daf-16 also suppress lifespan extension of animals that have a germ line ablation [10360574]. Sex-specific lifespan potential requires daf-16 [10747056]. daf-16 mutation suppresses enhanced UV resistance as well as increase longevity of daf-2, daf-23, spe-26, and clk-1 mutants. Mutation in daf-16 does not alter the reduced fertility in spe-26. daf-16 mutants are more fertile than wild-type [8807294]. Nematode
    daf-2 abnormal DAuer Formation 2 daf-2 mutants live more than twice as long as controls. daf-2(sa189) mutation extends mean and maximum lifespan by 133 and 129%, respectively, when shifted to 20 degree Celsius. The daf-2(e1370) mutation extends mean and maximum lifespan by 32 and 119%, respectively, when shifted to 25 degree Celsius and by 110 and 145%, respectively, at 20 degree Celsius. daf-2(sa189) mutation extends mean lifespan by 67% as well as maximum lifespan [8247153]. This lifespan extension requires the activity of daf-16 [8247153]. The lifespan extension of daf-2(e1370) mutants is cancelled out by daf-16(m26) mutation. daf-2 mutants still exhibit a long lifespan after ablation of the gonad and germ cells. [8247153]. daf-2(e1370) increases mean (95-118%) and maximum (165%) lifespan [18828672]. RNAi against daf-2 extends mean and maximum lifespan by 47 and 65% [12471266]. daf-2 mutation extends lifespan of wild-type and eat-2 mutants [9789046]. Long lifespan of daf-2 insulin receptor mutation is further extended by sDR. However, daf-2 mutation is not a null mutation, therefore it is still possible that part of sDR-induced increase in lifespan might depend on insulin receptor pathway [17900900]. DR by bacterial dilution extends lifespan of daf-2 mutants [17538612]. IF does not markedly extend lifespan of daf-2 mutants [19079239]. 2% glucose reduce fractions of animals that become dauers at 22.5 degree Celsius in daf-2 mutants. Glucose almost completely suppresses lifespan extension of daf-2 ligand binding domain and tyrosine kinase mutants back to wild-type levels [19883616]. daf-2 mutation increases average lifespan by 157%. Under AL daf-2 mutation increases lifespan by 30%. bDR increases lifespan by 65%. daf-2 mutation further increases lifespan under bDR by 40%. Resistance to oxidative stress is reduced daf-2 mutation [19924292]. daf-2 RNAi increases mean lifesapn by 89% [18828672]. daf-2(m577) mutation increases mean and maximum lifespan by 33 and 29%, respectively, while daf-2(e1370) mutation increases mean and maximum lifespan by 101 and 181%, respectively [16782295]. DR from eat-2(ad465) mutation has an addative effect on lifespan of daf-2(e1370) adults, but not on lifespan of daf-2(e1368) adults [18043747]. Mutation in daf-2 in combination with mutation of daf-12 results in nearly 300% increase in lifespan [7789761]. daf-2 mutants are dauer constitutive [7219552] and exhibit reduced brood size [9504918; 9725835]. daf-2 mutants synergize with germ line ablation for lifespan extension [10360574] and also exhibit synergy with clk-1 mutation for lifespan prolongation [8638122]. All the phenotypes of daf-2 mutants are suppressed by mutation of daf-16 [8247153; 8601482; 7789761; 9725835; 9504918]. Mutation of daf-2 increases expression of sod-3 [10428762]. daf-2(e1370) increases mean lifespan by 146% [23097426]. Reducing expression of daf-2 in the adult stage alone extends lifespan [12399591]. Nematode
    DAP2 Dipeptidyl AminoPeptidase 2 DAP2 deletion decreases mean and maximum replicative lifespan under AL by 19 and 36%, respectively, and cancels out the lifespan extending effect of moderate DR [22912585]. Budding yeast
    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
    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
    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
    eat-2 EATing: abnormal pharyngeal pumping EAT-2 eat-2 mutations result in partial starvation by disrupting the function of the pharynx and an approximately 50% extension of lifespan. eat-2 mutants life significant longer by up to 57% [9789046]. eat-2(ad1116) mutants have an extended mean, 75%ile and maximum lifespan by 30, 35, and 24% [22810224]. eat-2 RNAi significantly reduces paralysis in Q35YFP or ABeta42 transgenic animals [18331616]. sDR further increases the long lifespan of eat-2 mutants [19239417]. eat-2 mutants live longer than wild-type at high food concentration but are short lived at lower concentrations (via bacterial dilution) [19229346]. eat-2(ad1113) mutation increases mean lifespan by 56% and is non-additive with SCNA overexpression [16782295]. Combining eat-2 mutation with bacterial deprivation DR does not result in an additive increase in lifespan [17081160;17096674]. Loss of function of eat-2 extends lifespan by 20-30%. Lifespan extension is proposed to be similar to DR. eat-2;daf-2 double mutant live longer than daf-2 single mutants [9789046]. Therefore, eat-2 mutants can synergize with daf-2 mutants, but not with clk-1 mutants, for lifespan extension. Lifespan extension conferred by eat-2 is not suppressed by daf-16 mutation [9789046]. Nematode
    egl-9 EGg Laying defective 9 egl-9 deletion does not affect lifespan under AL. Lifespan extension under modified sDR regimen is diminished by egl-9 mutation. egl-9 mutation significantly suppresses the lifespan extension by a strong loss-of-function allele of eat-2. Lifespan extension by deletion mutants of rsks-1 is fully suppressed by egl-9 mutation [19461873]. Nematode
    Eip55E Gamma-Cystathioinase Propargylglycine (PPG) inhibits gamma-cystathioinase, the second enzyme of the trans-sulfuration pathway (TSP). PPG is a specific suicidal inhibitor of gamma-cystathionase Eip55E. Gluthatione (GSH) levels are decreased by PPG administration in flies subjected to DR, whereas there is no effect on fully fed animals. PPG robustly suppresses DR lifespan extension, while longevity of fully fed flies is not affected in different strains. Thus, indicating that the effect of PPG is specific to DR. PPG abrogates changes in lifespan that are normally observed when flies are maintained in different dietary concentrations and compositions [21930912]. Fruit fly
    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
    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
    Factors are an extension of GenAge and GenDR.

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