| rb | ruby | Loss-of-function mutation reduces mean lifespan by 33% and maximum lifespan by 22% [17435236]. | Fruit fly |
| Rdh | Red herring | Overexpression of Rdh from a doxycycline-inducible promoter results in a 6-17% increase in mean lifespan [12620118].
Rdh is an open reading frame in the first intron of the encore gene [12620118]. | Fruit fly |
| rho-7 | rhomboid-7 | rho-7 knockout flies have severe neurological defects and a much reduced lifespan [16713954]. | Fruit fly |
| Rpd3 | Histone deacetylase Rpd3 | Males heterozygous for hypomorphic (partial loss-of-function) or null mutation of Rpd3 have a lifespan extension of 33% and 41 - 47%, respectively. Females heterozygous for a hypomorphic allele have a 52% increase in lifespan, but females carrying a null mutation have only modest increase in maximum lifespan (but not median lifespan). Longevity increases to the same extent in wild-type under low-calorie diet and rpd3 mutants fed normal diet. DR fails to further increase lifespan of rpd3 mutants. DR leads to a moderate but significant down-regulation of Rpd3, analogous to decrease obtained in heterozygotes carrying rpd3 mutation. rpd3 mutants fed normal food and wild-type fed low-calorie increase Sir2 expression two-fold [12459580]. | Fruit fly |
| rut | rutabaga | Two rutabaga mutants, rut1 and rut2080, have significantly shortened lifespans [17369827]. | Fruit fly |
| ry | rosy | Loss-of-function mutation of ry reduces mean lifespan by 45% and maximum lifespan by 35% [17435236]. | Fruit fly |
| S6k | RPS6-p70-protein kinase | Ubiquitous overexpression of a dominant-negative form of S6k (alias dS6K) increases mean lifespan by 22% and overexpression of a constitutively active form of S6k decreases mean lifespan by 34% at 29°C. Overexpression of a dominant-negative form of S6k protects mutants from deleterious effects of rich food, as if mimicking the effect of DR [15186745]. | Fruit fly |
| Scgdelta | Sarcoglycan delta | Deletion of Scgdelta has detrimental effects on the flight muscles of adult animals and heart function. Median lifespan is reduced by 15-30% [17855453]. | Fruit fly |
| SdhB | Succinate dehydrogenase B | SdhB mutants are hypersensitive to oxygen and displays signs of premature aging, including a 66% decrease in mean lifespan and a 17% decrease in maximum lifespan [17056719]. | Fruit fly |
| sdhC | succinate dehydrogenase, cytochrome b556 subunit | Mutants expressing a dominant negative form of sdhC in the nervous system have a 22% reduced mean lifespan and signs of oxidative stress induction [17854771]. | Fruit fly |
| Sir2 | — | Overexpression of Sir2 (alias dSir2) extends lifespan by up to 57% and specifically median lifespan by 40-60%, whereas a decrease in Sir2 activity by mutation blocks the life-extending effect of caloric reduction or rpd3 mutations [15520384]. rpd3 mutants fed normal food and wild-type fed a low-calorie diet increase dSir2 expression two-fold [12459580]. Sir2 mutation does not reduce lifespan under AL. Ubiquitous Sir2 overexpression causes a 4-fold increase in Sir2 mRNA expression and an up to 57% increase in average lifespan (29% for females and 18% for males). A 10 - 20% increase in Sir2 mRNA levels causes no lifespan extension. High levels of Sir2 protein is found in nuclei of neurons and in nuclei and cytoplasm of fat body cells. Neuronal Sir2 overexpression extends average lifespan by 52% in females and 20% in males. Motor-neuronal specific expression fails to cause lifespan extension. Flies with no or with several decreased Sir2 gene function have no lifespan extension under DR. DR fails to cause further increase in lifespan or even reduces lifespan toward normal of Sir2 overexpression mutants. Mild Sir2 overexpression in the fat-body extends lifespan and reduces relative body fat content in both males and females [22661237].
Sir2 in the adult fat body regulates longevity in a diet-depending manner. A diet-dependent lifespan phenotype of Sir2 perturbations (both knockdown and overexpression) in the fat-body, but not in muscles, negates the effects of background genetic mutants. Sir2 knockdown abrogates fat-body dFoxo-dependent lifespan extension [23246004].
Decreased expression of Sir2 and Sir2-like genes in all cells causes lethality during development. Suppression of the Sir2 in neurons decreases the median lifespan by 10-30%, while ubiquitinous silinecing of the Sir2-like genes shortens lifespan. The effects are server at 28°C that at 25°C [17159295]. | Fruit fly |
| Sirt2 | — | Decreased expression of Sirt2 by RNA interference causes lethality during development. Silencing in neurons shortened mean lifespan by 20% [17159295]. | Fruit fly |
| Sirt6 | — | Decreased expression of Sirt6 by RNA interference causes lethality during development. Sirt6 silencing in neurons shortens mean lifespan by 20% [17159295]. | Fruit fly |
| Sod1 | Superoxide dismutase | Simultaneous overexpression of catalase and Sod (alias Sod1) results in a one-third lifespan extension, a slower rate of mortality acceleration, and a delayed loss in physical performance, but neither has any effect on lifespan alone [8108730]. General overexpression of Sod (also known as Cu/ZnSOD) alone is sufficient to extend lifespan by up to 48%. Simultaneous overexpression of catalase with Cu/ZnSOD has no added benefit, presumably due to a pre-existing excess of catalase [9858546]. Sod1 reduction by knockdown or knockout blunts the lifespan extension by a high sugar-low protein diet, but not a low-calorie diet [22672579].
Sod mutant flies display infertility and a reduction in lifespan [2539600]. | Fruit fly |
| Sod2 | Superoxide dismutase 2 (Mn) | RNA interference of Sod2 results in increased oxidative stress and early-onset mortality in young adults [12456885]. Overexpression of Sod2 by 5-115% decreases lifespan by 4-5% without any compensatory changes in metablic rate, level of physical activity, or the levels of other antioxidants (Sod, Cat, and glutathione) [10545213]. Targeted overexpression of Sod2 in motor neurons alone extends lifespan by 30% [11113599]. Induced overexpression of Sod2 in adult animals extends lifespan up to 37% [12072463]. Overexpression of catalase in combination with SOD2 has no added benefit for lifespan [12072463]. Animals overexpressing SOD2 or catalase do not exhibit a decrease in metabolism as measured by oxgen consumption [12072463].
Sod2 overexpression results in a 20% increase in mean and maximum lifespan [18067683]. | Fruit fly |
| sug | sugarbabe | Overexpression of sug (from a doxycycline-inducible promoter) results in a 5-9% increase in mean lifespan [12620118]. | Fruit fly |
| sun | Stunted | sun mutations increases lifespan and resistance to oxidative stress [15133470] | Fruit fly |
| Surf1 | surfeit gene 1 | Surf1 knockdown results in larval lethality. However, knockdown in the central nervous system (CNS) not only bypasses the larval lethality but it results in an increase in maximum lifespan of about 20-30% [16172499]. | Fruit fly |
| Tor | Target of rapamycin | Expression of a dominant-negative form of Tor extends lifespan [15186745]. Ubiquitious overexpression of dTOR with the da-GAL4 driver of UAS-dTOR(FRB) which contains the 11kDA FKB12-rapamycin binding domain led to a mean and maximum lifespan increase of 15% (24%) and 29% at 29°C and of 50% (26%) and 13% at 25°C, respectively [15186745].
Overexpression of the dominant-negative form of Tor specifically in the fat and muscle tissues is sufficient to extend the mean and maximum lifespan by 24 and 19%, respectively [15186745].
Overexpression of UAS-dTOR(WT) or UAS-dTOR(TED) prevents eclosion to adulthood [15186745]. | Fruit fly |
| Trx-2 | thioredoxin-2 | Trx-2 mutants have a 25% reduction in maximum lifespan and exhibit lower tolerance to oxidative stress while animals carrying multiple copies of Trx-2 exhibit higher tolerance [17567437]. | Fruit fly |
| TrxT | Thioredoxin T | Overexpression of TrxT in neurons increases the level of locomotor activity in aged flies and extends the mean lifespan by 15% [17301052]. | Fruit fly |
| Tsc1 | CG6147-PA Tuberous sclerosis complex genes 1 | Ubiquitously overexpression of UAS constructs (via the daughterless (da)-GAL-4 driver) containing dTSC1 extends mean lifespan at 29°C by 14% [15186745]. | Fruit fly |
| VhaSFD | Vacuolar H+-ATPase SFD subunit | Overexpression of VhaSFD (from a doxycycline-inducible promoter) results in a 5-10% increase in mean lifespan [12620118]. | Fruit fly |
| to | TakeOut | Overexpression of to in adult neurons, pericerbral or abdonimal fat body increases male and female lifespan. to overexpression in the adult nervous system, head fat body and abdominal fat body results in 25, 20 and 12-18% increase of mean lifespan. On average the mean lifespan is extended for males and females by 18 and 26%, while maximum lifespan of male and female is increased by 13 and 25% [20519778].
Starvation, DR and many longevity mutants (like Rpd3, Sir2, chico, methusalem) all upregulate takeout (to). to is a secreted potential juvenile hormone binding protein and its induction by starvation is blocked by all arrhythmic central clock mutants [20519778; 20622267]. | Fruit fly |
| ImpL2 | Ecdysone-inducible gene L2 | Lmp-L2 over-expression, ubiquitous or restricted to DILP-producing cells and/or gut and fat body, extends lifespan even if induced at adult onset [21108726]. Overexpression of ImpL2 increases mean and maximum lifespan by 15% and 23%, respectively. Lifespan is reduced when Impl2 is strongly over-expressed throughout the adult by the conditional GS driver, act-GS-GAL4 or da-GS-Gal3, while restricted over-expression of the ImpL2 in fat cells by using S106-GS-Gal4, which increases mRNA level about 6-fold extends lifespan in both sexes [22366109]. mRNA for Impl2 was strongly elevated in sterile, long-lived flies [18434551]. | Fruit fly |
