Optogenetic rejuvenation of mitochondrial membrane potential extends C. elegans lifespan.

Mitochondrial dysfunction plays a central role in aging but the exact biological causes are still being determined. Here, we show that optogenetically increasing mitochondrial membrane potential during adulthood using a light-activated proton pump improves age-associated phenotypes and extends lifespan in C. elegans . Our findings provide direct causal evidence that rescuing the age-related decline in mitochondrial membrane potential is sufficient to slow the rate of aging and extend healthspan and lifespan.
Competing Interests: Competing Interests B.J.B, S.P. and A.P.W. are listed as inventors on a patent application based on some of the work described here. The remaining authors declare no competing interests.