Lee 2019 Nat Metab
| Lee HJ, Noormohammadi A, Koyuncu S, Calculli G, Simic MS, Herholz M, Trifunovic A, Vilchez D (2019) Prostaglandin signals from adult germ stem cells delay somatic aging of Caenorhabditis elegans. Nat Metab 1:790-810. |
Lee HJ, Noormohammadi A, Koyuncu S, Calculli G, Simic MS, Herholz M, Trifunovic A, Vilchez D (2019) Nat Metab
Abstract: A moderate reduction of body temperature can induce a remarkable lifespan extension. Here we examine the link between cold temperature, germ line fitness and organismal longevity. We show that low temperature reduces age-associated exhaustion of germ stem cells (GSCs) in Caenorhabditis elegans, a process modulated by thermosensory neurons. Notably, robust self-renewal of adult GSCs delays reproductive aging and is required for extended lifespan at cold temperatures. These cells release prostaglandin E2 (PGE2) to induce cbs-1 expression in the intestine, increasing somatic production of hydrogen sulfide (H2S), a gaseous signaling molecule that prolongs lifespan. Whereas loss of adult GSCs reduces intestinal cbs-1 expression and cold-induced longevity, application of exogenous PGE2 rescues these phenotypes. Importantly, tissue-specific intestinal overexpression of cbs-1 mimics cold-temperature conditions and extends longevity even at warm temperatures. Thus, our results indicate that GSCs communicate with somatic tissues to coordinate extended reproductive capacity with longevity.
• Bioblast editor: Plangger M
Labels: MiParea: Respiration
HRR: Oxygraph-2k
Labels, 2019-10
