清脆的
质粒
生物
水平基因转移
抗生素耐药性
志贺氏菌
微生物学
基因
大肠杆菌
抵抗性
Cas9
细菌
计算生物学
遗传学
抗生素
流动遗传元素
基因组
作者
Gong Li,Tengfei Long,Shiying Zhou,Lijuan Xia,Lei Wan,Xiao-Yuan Diao,Ang Gao,Yuzhang He,Ruan-Yang Sun,Hao Ren,Liang‐Xing Fang,Xiao‐Ping Liao,Ya-Hong Liu,Liang Chen,Jian Sun
出处
期刊:Research Square - Research Square
日期:2023-02-17
标识
DOI:10.21203/rs.3.rs-2564758/v1
摘要
Abstract The spread of antibiotic resistance genes (ARGs), especially those on plasmids, poses a major risk to global health. However, the extent and frequency of ARG transfer in microbial communities among human, animal, and environmental sectors is not well understood due to a lack of effective tracking tools. We have developed a new fluorescent tracing tool, CRISPR-AMRtracker, to study ARG transfer. It combines CRISPR/Cas9 fluorescence tagging, fluorescence-activated cell sorting, 16S rRNA gene sequencing, and microbial community analysis. The tool integrates a fluorescent tag immediately downstream ARGs, allowing for gene transfer tracking without affecting host cell antibiotic susceptibility, fitness, conjugation, or transposition. Our experiments show that sfGFP-tagged plasmid-borne mcr-1 can transfer across different bacteria species in feces, including Escherichia , Shigella , Lactobacillus , Staphylococcus , Enterococcus , and Bacillus . CRISPR-AMRtracker offers a powerful tool for monitoring ARG transfer in microbiota communities and can inform strategies to combat the threat of antibiotic resistance.
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