daf-2 mutation

Species: Nematode (Taxid: 6239)
Factor: daf-2
Manipulation: Loss-of-Function, Knockdown, Mutation
Effect:

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]. 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(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].

Mean: +32 to +146
Maximum: +119 to +165

References:
  • 8247153: A C. elegans mutant that lives twice as long as wild type.
  • 18828672: Caenorhabditis elegans HCF-1 functions in longevity maintenance as a DAF-16 regulator.
  • 19079239: Signalling through RHEB-1 mediates intermittent fasting-induced longevity in C. elegans.
  • 16782295: Increased lifespan in transgenic Caenorhabditis elegans overexpressing human alpha-synuclein.
  • 19924292: Role of CBP and SATB-1 in aging, dietary restriction, and insulin-like signaling.
  • 19883616: Glucose shortens the life span of C. elegans by downregulating DAF-16/FOXO activity and aquaporin gene expression.
  • 18043747: DAF-2/insulin-like signaling in C. elegans modifies effects of dietary restriction and nutrient stress on aging, stress and growth.
  • 10360574: Signals from the reproductive system regulate the lifespan of C. elegans.
  • 10428762: The daf-2 gene network for longevity regulates oxidative stress resistance and Mn-superoxide dismutase gene expression in Caenorhabditis elegans.
  • 9504918: An insulin-like signaling pathway affects both longevity and reproduction in Caenorhabditis elegans.
  • 17900900: An AMPK-FOXO pathway mediates longevity induced by a novel method of dietary restriction in C. elegans.
  • 17538612: Two neurons mediate diet-restriction-induced longevity in C. elegans.
  • 23097426: Post-developmental microRNA expression is required for normal physiology, and regulates aging in parallel to insulin/IGF-1 signaling in C. elegans.


  • Aging Relevance Analysis/Source:
  • GenAge
  • GenDR



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