Olfactory perception of food abundance regulates dietary restriction-mediated longevity via a brain-to-gut signal.
Olfactory perception of food abundance regulates dietary restriction-mediated longevity via a brain-to-gut signal.
复制标题
嗅觉对食物丰度的感知通过大脑到肠道的信号调节饮食限制介导的长寿。
DOI:
10.1038/s43587-021-00039-1
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发表时间:
2021-03
期刊:
影响因子:
--
通讯作者:
Xu XZS
中科院分区:
文献类型:
--
作者:
Zhang B;Jun H;Wu J;Liu J;Xu XZS
The role of food nutrients in mediating the positive effect of dietary restriction (DR) on longevity has been extensively characterized, but how non-nutrient food components regulate lifespan is not well understood. Here, we show that food-associated odors shorten the lifespan of C. elegans under DR but not those fed ad libitum, revealing a specific effect of food odors on DR-mediated longevity. Food odors act on a neural circuit comprising the sensory neurons ADF and CEP, and the interneuron RIC. This olfactory circuit signals the gut to suppress DR-mediated longevity via octopamine, the invertebrate homolog of norepinephrine, by regulating the energy sensor AMPK through a Gq-PLCβ-CaMKK-dependent mechanism. In mouse primary cells, we find that norepinephrine signaling regulates AMPK through a similar mechanism. Our results identify a brain-gut axis that regulates DR-mediated longevity by relaying olfactory information about food abundance from the brain to the gut.
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