To measure extension longevity effect of soraprazan and identify the mechanism

Lipofuscin is known as intracellular waste substance produced by damaged mitochondrial incompleted decomposition. And it is a biomarker of aging. As aging, accumulation of the lipofuscin in retinal pigment epithelium induces blindness called Age-related macular degeneration. Soraprazan is developed to reduce the lipofuscin production and cure the age-related macular degeneration. Soraprazan reducing the age biomarker lipofuscin can be suggested to have effect of longevity extension. C.elegans were treated on NGM agar plate containing 0, 50, 100, 200 μM soraprazan and showed the lipofuscin reduction and extension of longevity. To identify the mechanism, 0 and 200 μM treated worms’ RNA expression was analyzed through microarray. After 14 days treatment of 0 and 200 μM soraprazan, the gene expression difference was compared. Two independent experiments were performed using about 350 worms at each concentration.