The global distribution and spread of the mobilized colistin resistance gene mcr-1.
The global distribution and spread of the mobilized colistin resistance gene mcr-1.
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DOI:
10.1038/s41467-018-03205-z
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发表时间:
2018-03-21
影响因子:
16.6
通讯作者:
Balloux F
中科院分区:
文献类型:
--
作者:
Wang R;van Dorp L;Shaw LP;Bradley P;Wang Q;Wang X;Jin L;Zhang Q;Liu Y;Rieux A;Dorai-Schneiders T;Weinert LA;Iqbal Z;Didelot X;Wang H;Balloux F
Colistin represents one of the few available drugs for treating infections caused by carbapenem-resistant Enterobacteriaceae. As such, the recent plasmid-mediated spread of the colistin resistance gene mcr-1 poses a significant public health threat, requiring global monitoring and surveillance. Here, we characterize the global distribution of mcr-1 using a data set of 457 mcr-1-positive sequenced isolates. We find mcr-1 in various plasmid types but identify an immediate background common to all mcr-1 sequences. Our analyses establish that all mcr-1 elements in circulation descend from the same initial mobilization of mcr-1 by an ISApl1 transposon in the mid 2000s (2002–2008; 95% highest posterior density), followed by a marked demographic expansion, which led to its current global distribution. Our results provide the first systematic phylogenetic analysis of the origin and spread of mcr-1, and emphasize the importance of understanding the movement of antibiotic resistance genes across multiple levels of genomic organization. The recent plasmid-mediated spread of the mobilized colistin resistance gene mcr-1 poses a significant public health threat, requiring worldwide monitoring and surveillance. Here, Wang et al. compile and analyze a data set of 457 mcr-1-positive sequenced isolates to investigate the origin and global distribution of mcr-1.
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