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Longevity

Longevity: short, sourced explainers from Time Travel Leap.

Longevity

One gene made old cells look younger

Infographic: an age-clock gauge beside test tubes; a DNA strand with a glowing section labeled SRSF1, an RNA-splicing gene; an old orange cell linked to a younger-looking blue cell; and a mouse labeled aged mice. Panels explain that researchers built an age clock from human skin cells and boosted a focused library of genes in old cells, that SRSF1 pushed old cells toward a younger profile while they stayed skin cells and that researchers delivered SRSF1 to aged mice with a liver-targeting virus. Results: frailty progression down 44 percent, median lifespan up 14 percent (associated with SRSF1), nine to 10 mice per group. Banner: early result in lab cells and mice, not people. Source: Nature Aging, Oct. 14, 2026.

In a small study of aged mice, it slowed frailty and was linked to longer life. It is an early result. (Image: SI illustration)

Nature Aging 6(10), 2057–2073 · Oct. 14, 2026