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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  • Types: + -
  • symbol name observation species
    CYT1 cytochrome c1 Deletion of CYT1 increases replicative lifespan by 15% in the alpha strain and decreases replicative lifespan by 20% in a strain. Deletion of CYT1 decreases replicative lifespan and cancels out replicative lifespan extension by HAP4 overexpression. Initially, it was shown that deletion of CYT1 also prevents lifespan extension by 0.5% glucose restriction [12124627], but later it was shown that either 0.5 or 0.05 % glucose restriction increases replicative lifespan of cyt1Delta cells [16311627]. Budding yeast
    clk-2 CLocK (biological timing) abnormality Mutations in clk-2 slow down development and extend lifespan by 12-25% (at 20 degree Celsius in Bristol N2). clk-2 mutation slows growth and rhythms similar to clk-1. Mutation in clk-2 is embryonic lethal at 25 degree Celsius and results in some lethality at all temperatures [8638122]. clk-2 encodes a protein involved in DNA repair and perhaps telomere maintenance [14-16 in (Lee et al., 2003)]. clk-2 mutation affects telomere length and might result in shorter [11696330] or longer telomeres [11747819]. clk-2 overexpression may shorten telomeres [11747819]. Nematode
    cchl-1 Cytochrome C Heme-Lyase cchl-1 RNAi extends mean and maximum lifespan by 55% and 57%, respectively. Lifespan extension by RNAi of cchl-1 is not suppressed by daf-16 [12447374]. cchl-1 RNAi animals have lower ATP content and oxygen consumption [12447374]. Nematode
    • 3 factors
    Factors are an extension of GenAge and GenDR.

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