C. elegans interprets bacterial non-coding RNAs to learn pathogenic avoidance.

C. elegans interprets bacterial non-coding RNAs to learn pathogenic avoidance.
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DOI:
10.1038/s41586-020-2699-5
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发表时间:
2020-10
期刊:
影响因子:
64.8
通讯作者:
Murphy CT
Murphy CT
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Kaletsky R;Moore RS;Vrla GD;Parsons LR;Gitai Z;Murphy CT

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C.在环境中暴露的许多细菌中,秀丽线虫必须区分致病性和营养性细菌食物来源。在这里,我们表明,一个单一的暴露于纯化的小RNA分离的致病性铜绿假单胞菌(PA 14)是足以诱导病原体的回避,无论是在治疗的动物和后代的四代。RNA干扰和皮尔纳途径、种系和ASI神经元是细菌小RNA诱导的回避行为和跨代遗传所必需的。铜绿假单胞菌的一个非编码RNA P11,是必要的和足够的传达学习回避PA 14,和它的C。线虫的靶标MACO-1是回避所必需的。我们的研究结果表明,这种ncRNA依赖性机制的进化是为了调查蠕虫的微生物环境,利用这些信息做出适当的行为决定,并将这些信息传递给其后代。
C. elegans must distinguish pathogenic from nutritious bacterial food sources among the many bacteria it is exposed to in its environment. Here we show that a single exposure to purified small RNAs isolated from pathogenic Pseudomonas aeruginosa (PA14) is sufficient to induce pathogen avoidance, both in the treated animals and in four subsequent generations of progeny. The RNA interference and piRNA pathways, the germline, and the ASI neuron are required for bacterial small RNA-induced avoidance behavior and transgenerational inheritance. A single P. aeruginosa non-coding RNA, P11, is both necessary and sufficient to convey learned avoidance of PA14, and its C. elegans target, maco-1, is required for avoidance. Our results suggest that this ncRNA-dependent mechanism evolved to survey the worm’s microbial environment, use this information to make appropriate behavioral decisions, and pass this information on to its progeny.
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