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

prometheus--2.jpg

  • Types: + -
  • symbol name observation species
    ADE4 ADEnine requiring 4 ade4 mutation extends chronological lifespan, but not replicative lifespan, and is non-additive with 0.5% glucose or amino-acid DR on chronological lifespan extension. ADE4 deletion in atg16 mutants results only in a partial extension of the chronological lifespan by 0.5% glucose DR [20421943]. Budding yeast
    SRX1 SulfiRedoXin 1 Extra copy of SRX1 counteracts age-related hyperoxidation of Tsa1 and extends replicative lifespan by 15 - 20% in a TSA1-dependent manner. Replicative lifespan extension in sir2;fob1 double mutant by DR is reduced by SRX1 deletion. Wild-type cells require SRX1 to fully extend lifespan. DR fails to further extend replicative lifespan of cells carrying an extra copy of SRX1. Mutation in CDC35 (adenylate cyclase), a genetic mimetic of DR, is dependent on SRX1 to extend replicative lifespan [21884982]. Budding yeast
    TCO89 Tor Complex One TCO89 deletion increases chronological lifespan, increases mitochondrial oxygen consumption, but decreases mitochondrial and cellular ROS in early stationary phase [21641548]. Deletion of TCO89 cancels out replicative lifespan extension by moderate DR [18690010]. Budding yeast
    TSA1 Thiol-Specific Antioxidant 1 A gain-of-function allele of peroxiredoxin (thioredoxin peroxidase, Tsa1) causes a dominant oxidative stress-resistance and robust premature aging phenotype with reduced mean lifespan. These effect is not provoked by altered Tsa1 levels, nor can it be stimulated by deletion, haploinssufficiency or overexpression of wild-type allele [20729566]. Disruption of TSA1 shortens chronological lifespan [15129730]. Replicative lifespan extension by DR in sir2;fob1 double mutant is reduced by TSA1 deletion mutant. Wild-type cells require TSA1 to fully extend lifespan. Mutation in CDC35 (adenylate cyclase), a genetic mimetic of DR, is dependent on TSA1 to extend lifespan [21884982]. Budding yeast
    YPT7 Yeast Protein Two 7 YPT7 deletion decreases replicative lifespan by 15% in the alpha strain [18340043]. Deletion of YPT7 cancels out replicative lifespan extension of 0.5% glucose restriction and results under DR also into a shorter replicative lifespan than under AL [18690010]. Budding yeast
    VAM7 VAcuolar Morphogenesis 7 VAM7 deletion decreases replicative lifespan under AL and blocked DR-mediated lifespan extension. Replicative lifespan decreases by 70% on DR in VAM7 deletion mutant [18690010]. Budding yeast
    PNC1 Pyrazinamidase/NiCotinamidase 1 Cells with 5 copies of PNC1 have a 70% longer replicative lifespan which is cancelled out by SIR2 deletion. PNC1 is upregulated under glucose DR [12736687]. Pnc1 reduces cellular nicotinamide levels, a product and noncompetitive inhibitor of Sir2 deacetylation reaction. Overexpression of PNC1 suppresses the effect of exogenously added nicotinamide on Sir2-dependent silencing at HM loci, telomeres and rDNA loci [12736687; 14729974]. Pnc1 catalyses the breakdown of nicotinamide to nicotinate and ammonia [12736687]. Deletion of PNC1 shortens replicative lifespan approximately by 10% [12736687] and largely prevents replicative lifespan extension of 0.5% glucose restriction. 0.5% glucose restriction slightly extends median replicative lifespan (by 10 - 15%) but not maximum replicative lifespan in pnc1Delta [14724176]. PNC1 overexpression suppresses the inhibitory effect of exogenously added NAM on silencing, lifespan, and Hst1-mediated transcriptional repression [14729974]. Increased expression of PNC1 is both necessary and sufficient for replicative lifespan extension by DR and low-intensity stress. Under non-stressing conditions (2% glucose, 30 degree Celsius), a strain with additional copies of PNC1 (5XPNC1) has 70% longer replicative lifespan than the wild-type and some cells live for more than 70 divisions. Neither DR nor heat stress further increase the lifespan of the 5XPNC1 strain [12736687]. PNC1 deletion decreases chronological lifespan [17110466]. Budding yeast
    PKH2 Pkb-activating Kinase Homolog 2 PKH2 deletion increases replicative lifespan by 20% in the alpha strain and by 15% in the a strain [18340043]. Deletion of PKH2 increases chronological lifespan by 29% [22319457] to 34% [21447998] as well as by 19 - 54% (19, 24, 29, 54) in diploid cells [21447998]. PKH2 mutation extends both replicative and chronological lifespan as well as cancels out DR-induced replicative and chronological lifespan extension [21584246]. Mean and maximum replicative lifespan on AL is extended by 38 and 69%, respectively. Budding yeast
    NPT1 Nicotinate PhosphoribosylTransferase 1 Increased dosage of NPT1 increases SIR2-dependent silencing, stabilizes the rDNA locus and extends replicative lifespan by up to 60%. 0.5% glucose restriction does not significantly further increase replicative lifespan of NPT1 overexpression [11884393]. NPT1 deletion decreases replicative lifespan by 50% [17482543] as well as chronological lifespan [17110466]. Deletion of NPT1 shortens the lifespan in W303R. Replicative lifespan extension of cdc25-10 mutation (assumed to act as a genetic DR-mimetic) is cancelled out by NPT1 deletion [11000115]. NPT1 mutation results in loss of telomere and rDNA silencing [10841563], an effect that is likely caused by a loss of SIR2 activty due to decreased NAD levels. Mutation of NPT1 is synthetical lethal with mutation of QPT1 [11000115]. Budding yeast
    NDE2 NADH Dehydrogenase, External 2 Overexpression of NDE1 and NDE2 increases intracellular NAD/NADH ratio by lowering NADH concentration and increases replicative lifespan by 20-25%. This lifespan extension is non-additive with 0.5% glucose restriction [14724176]. Budding yeast
    NDE1 NADH Dehydrogenase, External 1 Overexpression of NDE1 and NDE2 increases intracellular NAD/NADH ratio by lowering NADH concentration and increases replicative lifespan by 20-25%. This lifespan extension is non-additive 0.5% glucose restriction [14724176]. Deletion of NDE1 extends chronological lifespan [16436509]. Budding yeast
    LAT1 LAT1 is suggested to play a role in lifespan extension of DR. Deleting LAT1 abolishes replicative lifespan extension induced by 0.5% and 0.05% glucose restriction. In contrast, overexpressing Lat1 extends replicative lifespan, and this lifespan extension was not further increased by 0.5% glucose restriction. Similar to DR, replicative lifespan extension by LAT1 overexpression largely requires mitochondrial respiration [17200108]. Overexpressing LAT1 extends lifespan (20% mean lifespan increase) and this lifespan extension is not further increased by DR. Similar to DR, lifespan extension by Lat1 overexpression largely requires mitochondrial respiration indicating mitochondrial metabolism plays an important role in DR. Interestingly, LAT1 overexpression does not require the Sir2 family to extend lifespan. Lat1 is also a limiting longevity factor in non-dividing cells in that overexpressing LAT1 extends cell survival during prolonged culture at stationary phase. Budding yeast
    IPK1 Inositol Polyphosphate Kinase 1 Deletion of IPK1 increases mean replicative lifespan by 41 - 40% in the alpha strain [16293764; 19030232]. IPK1 deletion extends mean and maximum replicative lifespan by 24 and 19%, respectively, and was non-synergistic with moderate DR [21584246]. Budding yeast
    HST2 Homolog of SIR Two (SIR2) 2 HST2 overexpression extends replicative lifespan. 0.5% glucose restriction does not increase lifespan of sir2;fob1;hst2 triple mutants [16051752]. DR increases lifespan of all four sir2;fob1;hstX(X = sirtuin) triple mutants [16741098; 17129213]. 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
    GUT2 Glycerol UTilization 2 Overexpression of GUT2 extends replicative lifespan by 25% and does not synergize with 0.5% glucose restriction [18381895]. Budding yeast
    GIS1 GIg1-2 Suppressor 1 Deletion of GIS1 increases replicative lifespan by 25% in the alpha strain [19030232] and causes major although not complete reversion of chronological lifespan extension by 0.5% glucose restriction [18225956]. Budding yeast
    ERG6 ERGosterol biosynthesis 6 Deletion of ERG6 cancels out replicative lifespan extension of 0.5% glucose DR and results under DR also into a shorter replicative lifespan than under AL [18690010]. Budding yeast
    ERG5 ERGosterol biosynthesis 5 Deletion of ERG5 decreases replicative lifespan by 35% in the a strain [18340043], but increases mean chronological lifespan by 26 - 116% (26, 40, 43, 62, 116) in diploid cells [21447998]. Deletion of ERG5 cancels out the replicative lifespan extension of 0.5% glucose restriction [18690010]. Budding yeast
    BMH1 Brain Modulosignalin Homologue 1 Deleting BMH1 extends chronological lifespan by 25% and is associated with activated stress response, decreased ROS levels and increased heat-shock-element-driven transcription activity. BMH1 deletion was non-additive with the genetic DR mimetic cdc25 and tor1. Water starvation (a form of extreme DR) extends chronological lifespan of BMH1 mutant even more as it does in wild-type. BMH1 genetically interacts with DR as well as TOR- and PKA-signaling pathways to regulate lifespan. Phosphorylation of Ser238 on Bmh1 increases during chronological aging, which is delayed by DR or reduced TOR activity [19805817]. Budding yeast
    ATG15 AuTophaGy related 15 Deletion of ATG15 does not affect the lifespan significantly on AL, while DR shortens replicative lifespan of ATG15 deletion mutant by 28% [18690010]. Budding yeast
    AAT1 Aspartate AminoTransferase 1 Overexpression of AAT1 extends replicative lifespan by 25% and does not synergize with 0.5% glucose restriction [18381895]. Budding yeast
    TOR1 Target Of Rapamycin 1 TOR1 deletion extends mean and maximum replicative lifespan by 21 and 25% [16293764] as well as chronological lifespan [21076178]. This lifespan extension is independent of SIR2 and additive with deletion of FOB1 [16293764]. Deletion of TOR1 fails to increase the replicative lifespan of a sir2 mutant [20947565]. Deletion of TOR1 substantially extends chronological lifespan, increasing median survival almost 3-fold (wild-type 4.5 days, tor1 null 12 days), i.e. by 167%. By 21 days in culture, the vast majority of wild-type cells had died (>99.9%), whereas many tor1 null cells remained viable. Deletion of TOR1 also extends the chronological lifespan of the relatively short-lived BY4742 strain, one of the two haploid genetic backgrounds of the widely used Yeast Knockout Collection available from Open Biosystems. Deletion of TOR1 fails to extend chronological lifespan in Petite strains that are unable to respire [17403371]. TOR1 deletion increases replicative lifespan by 30% in the alpha strain and 20% in a strain [19030232]. TOR1 deletion mutant have and increased mean and maximum replicative lifespan by 21% and 6%, respectively [21931558]. Deletion of TOR1 extends replicative lifespan as well as chronological lifespan [21076178] and glucose restriction fails to further extend the long replicative lifespan of tor1Delta [16293764; 16418483; 18225956]. Water starvation (extreme DR) further extends chronological lifespan of tor1 mutants [18225956]. Budding yeast
    SCH9 Transposon-mediated mutagenesis of SCH9, which encodes for a serine threonine kinase homologous to Akt/PKB, increases resistance to oxidants and thermal stress as well as extends chronological lifespan by 30%. SCH9 deletion increases chronological lifespan by up to threefold. Stress-resistance transcription factors Msn2/Msn4 and protein kinase Rim15 are required for this life-extension. Deletion of the mitochondrial antioxidant enzyme superoxide dismutase gene SOD2 prevents the increased chronological lifespan caused by SCH9 deletion [11292860]. Mutations that decrease the activity of the Ras/Cyr1/PKA pathway also extend longevity and increase stress resistance by activating transcription factors Msn2/Msn4 and Sod2 [12855292]. SCH9 deletion mutants exhibit more than 3-fold extension of chronological lifespan. By day 9 of medium depletion all the wild-type cells were dead while 50% sch9 mutants survived [17710147]. Deletion of SCH9 also increases resistance to heat shock and oxidative stress [11292860], and increases replicative lifespan by 18% (in DBY746) [12586694]. SCH9 deletion increases the replicative lifespan by 40% in the alpha strain [18340043] and increases mean chronological lifespan by 97 - 246% (97, 133, 154, 226, 246) in diploid cells [21447998]. Mutation or deletion of SCH9 increases resistance to oxidants and extends chronological lifespan [11292860; 16286010]. The extended lifespan of SCH9 deletion mutants is not further extended by low glucose DR and is independent of Sir2 [16293764]. Deletion of RIM15 or GIS1 reverses chronological lifespan extension associated with sch9Delta. Water restriction further increases chronological lifespan of sch9Delta [18225956]. Deletion of SCH9 results in a longer chronological lifespan [21076178]. Budding yeast
    RPL31A Ribosomal Protein of the Large subunit 31A Deletion of RPL31A increases mean replicative lifespan by 45% [16293764]. Mean replicative lifespan increases by 35% in the alpha strain and 50% in a strain [19030232; 18423200]. Mean replicative lifespan of the RPL31A deletion mutant increases by 35% in the ORF collection and by 29% in the remade strain [22377630]. RPL31A deletion increases significantly replicative lifespan [17174052]. Deletion of RPL31A extends replicative lifespan and is not further extended by 0.05% glucose restriction [18423200]. Budding yeast
    Factors are an extension of GenAge and GenDR.

    Comment on This Data Unit