AI Article Synopsis

  • Lipofuscin is a natural aging biomarker, and remofuscin (soraprazan) helps improve age-related eye diseases by removing it from retinal pigment cells.
  • Research showed that remofuscin significantly extended the lifespan of the nematode C. elegans, with measurable improvements in aging biomarkers.
  • The study identified specific genes involved in lysosome function and detoxification that are crucial for remofuscin’s lifespan-extending effects, suggesting a complex mechanism linking cellular health and longevity.

Article Abstract

Lipofuscin is a representative biomarker of aging that is generated naturally over time. Remofuscin (soraprazan) improves age-related eye diseases by removing lipofuscin from retinal pigment epithelium (RPE) cells. In this study, the effect of remofuscin on longevity in Caenorhabditis elegans and the underlying mechanism were investigated. The results showed that remofuscin significantly (p < 0.05) extended the lifespan of C. elegans (N2) compared with the negative control. Aging biomarkers were improved in remofuscin-treated worms. The expression levels of genes related to lysosomes (lipl-1 and lbp-8), a nuclear hormone receptor (nhr-234), fatty acid beta-oxidation (ech-9), and xenobiotic detoxification (cyp-34A1, cyp-35A1, cyp-35A2, cyp-35A3, cyp-35A4, cyp-35A5, cyp-35C1, gst-28, and gst-5) were increased in remofuscin-treated worms. Moreover, remofuscin failed to extend the lives of C. elegans with loss-of-function mutations (lipl-1, lbp-8, nhr-234, nhr-49, nhr-8, cyp-35A1, cyp-35A2, cyp-35A3, cyp-35A5, and gst-5), suggesting that these genes are associated with lifespan extension in remofuscin-treated C. elegans. In conclusion, remofuscin activates the lysosome-to-nucleus pathway in C. elegans, thereby increasing the expression levels of xenobiotic detoxification genes resulted in extending their lifespan.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064964PMC
http://dx.doi.org/10.1038/s41598-022-11325-2DOI Listing

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