Colibactin comes to light

Colibactin comes to light
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大肠杆菌素被发现

DOI:
10.1038/s41589-019-0373-8
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发表时间:
2019
影响因子:
14.8
通讯作者:
Caitlin D Deane
Caitlin D Deane
中科院分区:
生物学1区
文献类型:
--
作者:
Caitlin D Deane

文献摘要

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神经退行性疾病 ALS 已被证明受到环境因素的调节,其中可能包括肠道细菌。鉴于已知肠道细菌会影响其他神经系统疾病的发病机制,Blacher 等人。测试了 ALS 背景下肠道微生物组和宿主之间的界面。他们使用 ALS 小鼠模型,发现抗生素治疗加剧了与该疾病相关的运动功能缺陷,并导致运动神经元细胞死亡和脑萎缩增加。即使在运动神经元功能障碍出现之前,ALS 小鼠的粪便微生物组组成与野生型 (WT) 小鼠相比也存在显着差异。特别是,他们发现了四种会加剧 ALS 疾病、生存和脑萎缩的菌株,以及一种能够改善这些症状的阿克曼氏菌 (AM)。非靶向代谢组学和评分算法确定 AM 诱导的烟酰胺 (NAM) 是由 WT 合成的,而不是由 ALS 合成的
The neurodegenerative disease ALS has been shown to be modulated by environmental factors, which could include gut bacteria. Given that gut bacteria are known to affect the pathogenesis of other neurological disorders, Blacher et al. tested the interface between the gut microbiome and the host in the context of ALS. They used mouse models of ALS and found that antibiotic treatment exacerbated the motor-function defects associated with the disease and led to increased motor-neuron cell death and brain atrophy. There were significant differences in compositions of the fecal microbiome of ALS mice compared to those of wild-type (WT) mice even before the appearance of motor-neuron dysfunction. In particular, they identified four strains that exacerbated ALS disease, survival, and brain atrophy, and one, Akkermansia muciniphila (AM), that improved them. Untargeted metabolomics and a scoring algorithm identified AM-induced nicotinamide (NAM) as being synthesized by the WT, but not the ALS