The shared antibiotic resistome of soil bacteria and human pathogens.

The shared antibiotic resistome of soil bacteria and human pathogens.
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DOI:
10.1126/science.1220761
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发表时间:
2012-08-31
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Dantas G
Dantas G
中科院分区:
其他
文献类型:
--
作者:
Forsberg KJ;Reyes A;Wang B;Selleck EM;Sommer MO;Dantas G

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土壤微生物区系代表了抗生素耐药性的古老进化起源之一,并被认为是可与临床病原体交换的耐药性基因的储存库。使用高通量的功能元基因组学方法和从功能选择(称为Parfum)中重新组装短读取序列数据的管道,我们为环境细菌和临床病原体之间最近的抗生素耐药基因交换提供了证据。我们描述了对五类抗生素(β-内酰胺类、氨基糖苷类、阿霉素、磺胺类和四环素类)具有完全核苷酸同源性的五类抗生素的多重耐药土壤细菌。这种同一性包括非编码区和多个动员序列,不仅提供了横向交换的证据,也提供了抗生素耐药性传播的机制。
Soil microbiota represent one of the ancient evolutionary origins of antibiotic resistance and have been proposed as a reservoir of resistance genes available for exchange with clinical pathogens. Using a high-throughput functional metagenomic approach in conjunction with a pipeline for the de-novo assembly of short-read sequence data from functional selections (termed PARFuMS), we provide evidence for recent exchange of antibiotic resistance genes between environmental bacteria and clinical pathogens. We describe multidrug-resistant soil bacteria containing resistance cassettes against five classes of antibiotics (β-lactams, aminoglycosides, amphenicols, sulfonamides, and tetracyclines) which have perfect nucleotide identity to genes from diverse human pathogens. This identity encompasses non-coding regions as well as multiple mobilization sequences, offering not only evidence of lateral exchange, but also a mechanism by which antibiotic resistance disseminates.
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