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
    Rala Ras-related protein Ral-A Rala is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    U4 U4 spliceosomal RNA U4 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    Egln3 Egl nine homolog 3, mitochondrial Egln3 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    RS29_RAT 40S ribosomal protein S29 RS29_RAT is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    LOC100361934 NADH dehydrogenase (ubiquinone) 1 beta subcomplex 4 LOC100361934 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    Mrpl52 39S ribosomal protein L52, mitochondrial Mrpl52 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    LOC100361856 6.8 kDa mitochondrial proteolipid-like LOC100361856 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    Cox14 COX14 cytochrome c oxidase assembly Cox14 (D3ZWG6_RAT) is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    D3ZWG6_RAT D3ZWG6_RAT is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    Yaf2 YY1 associated factor 2 Yaf2 is transcriptional upregulated in the cerebral cortex at the age 28 months under different longevity conditions such as under dietary restriction (DR) as well as in feeding switch regimens that result in extended lifespan, like early age switch to DR as well as the reverse switch under the influence of the DR-mimetic α-lipoic acid (i.e. DR switched to ad libitum+ lipoic acid) [Shona et al. 2013]. Norway rat
    Mir98 microRNA mir-98 miR-98-3p is the only miRNA significantly differentially expressed (upregulated) under DR and LA (lipoic acid; a DR-mimetic) treatment. Across mouse, rat and human predicted targets of miR-98-3p include the glutamate receptors, calcium transporters, histones and histone acetyltransferase/deacetylases. miR-89-3p is expressed at a low level and is highly conserved in rat, mouse, human and anplis lizard. Mir-98 precursor is located on the X-chromosome. In the rat, mouse and human genome it overlaps an E3 ubiquitin ligase HUWE which is involved in regulation of apoptosis, regulation of neural differentiation and proliferation, DNA damage repair [Shona et al. 2013]. miR-98 expression is significantly decreased in the adventitia and endomembrane ath different degrees in Goto-Kakizaki rat, a model of type 2 diabetes. miR-98 targets TRB2 which is increased in expression in this model of type 2 diabetes. TRB2 phosphorylates Akt [22012613]. The mouse ortholog of Mir98 may by associated with the germline [16766679]. Norway rat
    BHB β-hydroxybutyrate β-hydroxybutyrate (βOHB), ketone body is produced during a prolonged low-caloric or ketonic diet. Low concentrations of βOHB helps protect cells from "oxidative stress". dietary restriction (DR) spurs βOHB production. βOHB is an endogenous and specific inhibitor of class I histone deacetylases (HDACs). Exogenous βOHB administration, fasting or DR increases global histone acetylation in mouse tissues. HDAC inhibition by βOHB is correlated with global changes in transcription, including oxidative stress factors Foxo3a and Mt2. Cells treated with βOHB have increased histone acetylation at Foxo3a and Mt2 promoters. Both Foxo3a and Mt2 are activated by selective depletion of HDAC1 and HDAC2. normally keeps a pair of genes, namely Foxo3a and Mt2 switched off [http://www.biocompare.com/Life-Science-News/126847-Gladstone-Scientists-Discover-Novel-Mechanism-By-Which-Calorie-Restriction-Influences-Longevity/; http://www.sciencemag.org/content/early/2012/12/05/science.1227166].
    sodh-1 SOrbitol DeHydrogenase family 1 RNA interference of sodh-1 does not affect the lifespan of eat-2 mutants, although SODH-1 is elevated in eat-2 mutants [22810224]. Nematode
    CLEC-63 C-type LECtin 63 RNA interference of clec-63 has no significant effect on the lifespan of eat-2 mutants, although CLEC-63 is elevated in eat-2 mutants [22810224]. Nematode
    cyc-2.1 CYtochrome C 2.1 RNA interference of cyc-2.1 increases mean lifespan by 80% [17608836]. cyc-2.1 RNAi has no significant effect on lifespan of eat-2 mutants, although CYC-2.1 levels are elevated in eat-2 mutants [22810224]. Nematode
    asp-3 ASpartyl Protease 3 RNA interference against asp-3 significantly reduces lifespan of eat-2(ad1116) mutants, without any significant affect on the lifespan of wild-type. Mean and 75%ile lifespan of eat-2 mutants is reduced by 13-14% and 5-9% by asp-3 RNAi. ASP-3 is upregulated in eat-2 mutants [22810224]. Nematode
    acdh-1 Acyl CoA DeHydrogenase 1 RNAi knockdown of acdh-1 starting at hatching or only during the adulthood significantly decreases lifespan of eat-2 without affecting wild-type lifespan. ACDH-1 significantly upregulated in eat-2. Increased content of ACDH-1 is, at least partially, required for lifespan-extension by DR [22810224]. Nematode
    FET3 FErrous Transport 3 FET3 mutation slightly shortens chronological lifespan under AL. Its chronological lifespan is not extended by 0.5% glucose or amino-acid DR [20421943]. FET3 is one of several iron related genes that are up-regulated in response to increasing strength of glucose DR [18679056]. Budding yeast
    gpa2 Guanine nucleotide-binding protein alpha-2 subunit gpa2 (alias git8) encodes the alpha subunit of a heterotrimeric G protein, which acts downstream of Git3. Git8 activity accelerates aging and inhibits the lifespan-extending effect of DR. Constitutive active mutation of gpa2 decreases chronological lifespan under AL (2% glucose) and almost completely cancels out the lifespan extending effect of DR (0.2% glucose) [19266076]. Fission 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
    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
    PGA3 Processing of Gas1p and ALP Low glucose condition induces expression and activity of plasma membrane NADH coenzyme Q reductase (PGA3). Overexpression of PGA3 extends replicative and chronological lifespan by 20-30% [19239415]. Budding yeast
    sbds-1 Shwachman-Bodian-Diamond Syndrome protein homolog 1 RNA interference of sbds-1 decreases median lifespan by 24% in daf-2 mutants [18006689]. RNAi knockdown of sbds-1 starting at hatching or only during the adulthood significantly decreases lifespan of eat-2 without affecting wild-type lifespan. SBDS-1 are elevated in eat-2 mutants. Increased content of SBDS-1 is, at least partially, required for lifespan-extension by DR [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
    Factors are an extension of GenAge and GenDR.

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