Hormonal
Heterozygous loss of the mclk1 gene (mouse ortholog of clk-1) extends lifespan in mice by reducing oxidative stress and DNA damage, a mechanism evolutionarily conserved from nematodes.
This research highlights that genetic factors influencing oxidative stress and cellular fitness play a crucial role in longevity. While direct genetic manipulation is not a practical intervention for humans, the findings suggest that managing oxidative stress and supporting mitochondrial function (via ubiquinone/coenzyme Q pathways) may be important for healthy aging. Focus on lifestyle factors that support cellular health and reduce oxidative damage.
mclk1+/− mice, whose growth and fertility are normal, also display a substantial increase in lifespan in each of three different genetic backgrounds. These observations indicate that the distinct mechanism by which clk-1/mclk1 affects lifespan is evolutionarily conserved from nematodes to mammals
Why this rating
Strong evidence from multiple genetic backgrounds, statistically significant lifespan increases, and mechanistic validation in cell lines and liver tissue.
Source
Evolutionary conservation of the <i>clk-1</i>-dependent mechanism of longevity: loss of <i>mclk1</i> increases cellular fitness and lifespan in mice
Xingxing Liu et al. · Genes & Development · 2005
DOI 10.1101/gad.1352905
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