RRC ID 4183
著者 Petrascheck M, Ye X, Buck LB.
タイトル An antidepressant that extends lifespan in adult Caenorhabditis elegans.
ジャーナル Nature
Abstract The mechanisms that determine the lifespan of an organism are still largely a mystery. One goal of ageing research is to find drugs that would increase lifespan and vitality when given to an adult animal. To this end, we tested 88,000 chemicals for the ability to extend the lifespan of adult Caenorhabditis elegans nematodes. Here we report that a drug used as an antidepressant in humans increases C. elegans lifespan. In humans, this drug blocks neural signalling by the neurotransmitter serotonin. In C. elegans, the effect of the drug on lifespan is reduced or eradicated by mutations that affect serotonin synthesis, serotonin re-uptake at synapses, or either of two G-protein-coupled receptors: one that recognizes serotonin and the other that detects another neurotransmitter, octopamine. In vitro studies show that the drug acts as an antagonist at both receptors. Testing of the drug on dietary-restricted animals or animals with mutations that affect lifespan indicates that its effect on lifespan involves mechanisms associated with lifespan extension by dietary restriction. These studies indicate that lifespan can be extended by blocking certain types of neurotransmission implicated in food sensing in the adult animal, possibly leading to a state of perceived, although not real, starvation.
巻・号 450(7169)
ページ 553-6
公開日 2007-11-22
DOI 10.1038/nature05991
PII nature05991
PMID 18033297
MeSH Aging Animals Antidepressive Agents / chemistry Antidepressive Agents / pharmacology* Caenorhabditis elegans / drug effects* Caenorhabditis elegans / physiology* Caloric Restriction Humans Longevity / drug effects* Longevity / physiology* Methiothepin / pharmacology Mianserin / pharmacology Octopamine / metabolism* Receptors, Biogenic Amine / antagonists & inhibitors Receptors, Biogenic Amine / metabolism Receptors, Serotonin, 5-HT4 / metabolism Serotonin / biosynthesis Serotonin / metabolism* Serotonin 5-HT4 Receptor Antagonists Serotonin Antagonists / pharmacology Signal Transduction / drug effects Starvation / metabolism
IF 42.779
引用数 161
WOS 分野 BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
線虫 tm1325