大肠杆菌中抗菌药物耐药性的基因组进化

Genomic evolution of antimicrobial resistance in Escherichia coli.

机构信息

National Food Institute, Technical University of Denmark, Kemitorvet, Building 204, 2800, Kgs. Lyngby, Denmark.

Department Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany.

出版信息

Sci Rep. 2021 Jul 23;11(1):15108. doi: 10.1038/s41598-021-93970-7.

Abstract

The emergence of antimicrobial resistance (AMR) is one of the biggest health threats globally. In addition, the use of antimicrobial drugs in humans and livestock is considered an important driver of antimicrobial resistance. The commensal microbiota, and especially the intestinal microbiota, has been shown to have an important role in the emergence of AMR. Mobile genetic elements (MGEs) also play a central role in facilitating the acquisition and spread of AMR genes. We isolated Escherichia coli (n = 627) from fecal samples in respectively 25 poultry, 28 swine, and 15 veal calf herds from 6 European countries to investigate the phylogeny of E. coli at country, animal host and farm levels. Furthermore, we examine the evolution of AMR in E. coli genomes including an association with virulence genes, plasmids and MGEs. We compared the abundance metrics retrieved from metagenomic sequencing and whole genome sequenced of E. coli isolates from the same fecal samples and farms. The E. coli isolates in this study indicated no clonality or clustering based on country of origin and genetic markers; AMR, and MGEs. Nonetheless, mobile genetic elements play a role in the acquisition of AMR and virulence genes. Additionally, an abundance of AMR was agreeable between metagenomic and whole genome sequencing analysis for several AMR classes in poultry fecal samples suggesting that metagenomics could be used as an indicator for surveillance of AMR in E. coli isolates and vice versa.

摘要

抗菌药物耐药性(AMR)的出现是全球面临的最大健康威胁之一。此外,人类和牲畜中抗菌药物的使用被认为是抗菌药物耐药性的重要驱动因素。共生微生物群,特别是肠道微生物群,已被证明在抗菌药物耐药性的出现中发挥着重要作用。移动遗传元件(MGEs)也在促进抗菌药物耐药性基因的获取和传播方面发挥着核心作用。我们从来自 6 个欧洲国家的 25 个家禽、28 个猪和 15 个小牛肉牛群的粪便样本中分离出大肠杆菌(n=627),以研究大肠杆菌在国家、动物宿主和农场水平上的系统发育。此外,我们还研究了大肠杆菌基因组中 AMR 的进化,包括与毒力基因、质粒和 MGEs 的关联。我们比较了来自相同粪便样本和农场的大肠杆菌分离株的宏基因组测序和全基因组测序中检索到的丰度指标。本研究中的大肠杆菌分离株基于原籍国和遗传标记,没有表现出克隆性或聚类现象;然而,移动遗传元件在获取 AMR 和毒力基因方面发挥了作用。此外,在禽类粪便样本中,几种 AMR 类别的宏基因组和全基因组测序分析之间的 AMR 丰度是一致的,这表明宏基因组学可以作为大肠杆菌分离株中 AMR 监测的指标,反之亦然。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d584/8302606/8381ff46e845/41598_2021_93970_Fig1_HTML.jpg

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