Zhao Feifei, Feng Yu, Lü Xiaoju, McNally Alan, Zong Zhiyong
Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, China.
Antimicrob Agents Chemother. 2017 Jan 24;61(2). doi: 10.1128/AAC.02229-16. Print 2017 Feb.
A Klebsiella pneumoniae strain of sequence type 313 (ST313) recovered from hospital sewage was found carrying the plasmid-borne colistin resistance gene mcr-1, which was bracketed by two copies of the insertion sequence ISApl1 on a 57-kb self-transmissible IncP-type plasmid of a new IncP-1 clade. The carriage of mcr-1 on a self-transmissible broad-host-range plasmid highlights that mcr-1 has the potential to spread beyond the Enterobacteriaceae family.
从医院污水中分离出的一株序列型为313(ST313)的肺炎克雷伯菌携带质粒介导的黏菌素耐药基因mcr-1,该基因位于一个新的IncP-1分支的57 kb自我传递型IncP型质粒上,两侧被两份插入序列ISApl1包围。mcr-1位于自我传递的广宿主范围质粒上,这突出表明mcr-1有可能在肠杆菌科以外传播。