alexa Aging. Lysosomal signaling molecules regulate longevity in Caenorhabditis elegans.
Medicine

Medicine

Journal of Gerontology & Geriatric Research

Author(s): Folick A, Oakley HD, Yu Y, Armstrong EH, Kumari M,

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Abstract Lysosomes are crucial cellular organelles for human health that function in digestion and recycling of extracellular and intracellular macromolecules. We describe a signaling role for lysosomes that affects aging. In the worm Caenorhabditis elegans, the lysosomal acid lipase LIPL-4 triggered nuclear translocalization of a lysosomal lipid chaperone LBP-8, which promoted longevity by activating the nuclear hormone receptors NHR-49 and NHR-80. We used high-throughput metabolomic analysis to identify several lipids in which abundance was increased in worms constitutively overexpressing LIPL-4. Among them, oleoylethanolamide directly bound to LBP-8 and NHR-80 proteins, activated transcription of target genes of NHR-49 and NHR-80, and promoted longevity in C. elegans. These findings reveal a lysosome-to-nucleus signaling pathway that promotes longevity and suggest a function of lysosomes as signaling organelles in metazoans. Copyright © 2015, American Association for the Advancement of Science.
This article was published in Science and referenced in Journal of Gerontology & Geriatric Research

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