RNAi Interrogation of Dietary Modulation of Development, Metabolism, Behavior, and Aging in C. elegans.

RNAi Interrogation of Dietary Modulation of Development, Metabolism, Behavior, and Aging in C. elegans.
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RNAi 探究秀丽隐杆线虫发育、代谢、行为和衰老的饮食调节。

DOI:
10.1016/j.celrep.2015.04.024
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发表时间:
2015-05-19
期刊:
影响因子:
8.8
通讯作者:
Xu XZ
Xu XZ
中科院分区:
生物学1区
文献类型:
--
作者:
Xiao R;Chun L;Ronan EA;Friedman DI;Liu J;Xu XZ

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饮食几乎影响动物生活的各个方面,如发育,代谢,行为和衰老,直接通过提供营养物质和间接通过肠道微生物群。C.线虫以细菌为食,和其他动物一样,不同的细菌食物会引起蠕虫不同的饮食反应。然而,缺乏某些关键工具阻碍了蠕虫作为饮食信号模型的使用。在这里,我们对细菌菌株OP 50进行了基因工程改造,OP 50是C. elegans,使其与dsRNA生产和递送相容。使用这种RNAi兼容的OP50菌株和另一种细菌菌株HT115,我们喂蠕虫不同的饮食,同时递送RNAi以询问发育、代谢、行为和衰老的饮食依赖性差异调节的遗传基础。我们通过RNAi表明,神经内分泌和mTOR通路参与介导不同的饮食反应。这个遗传工具极大地方便了C语言的使用。elegans作为饮食信号的模型。
Diet affects nearly every aspect of animal life, such as development, metabolism, behavior and aging, both directly by supplying nutrients and indirectly through gut microbiota. C. elegans feeds on bacteria, and like other animals, different bacterial diets induce distinct dietary responses in the worm. However, the lack of certain critical tools hampers the use of worms as a model for dietary signaling. Here, we genetically-engineered the bacterial strain OP50, the standard laboratory diet for C. elegans, making it compatible for dsRNA production and delivery. Using this RNAi-compatible OP50 strain and the other bacterial strain HT115, we feed worms different diets while delivering RNAi to interrogate the genetic basis underlying diet-dependent differential modulation of development, metabolism, behavior, and aging. We show by RNAi that neuroendocrine and mTOR pathways are involved in mediating differential dietary responses. This genetic tool greatly facilitates the use of C. elegans as a model for dietary signaling.
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