Scientific Reports (Jul 2017)

Genomic characterization of novel IncFII-type multidrug resistant plasmids p0716-KPC and p12181-KPC from Klebsiella pneumoniae

  • Jiao Feng,
  • Zhe Yin,
  • Qiangyuan Zhao,
  • Yachao Zhao,
  • Defu Zhang,
  • Xiaoyuan Jiang,
  • Weili Wu,
  • Weijun Chen,
  • Hui Wang,
  • Yajun Song,
  • Yigang Tong,
  • Jinglin Wang,
  • Yanjun Li,
  • Dongsheng Zhou

DOI
https://doi.org/10.1038/s41598-017-06283-z
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 7

Abstract

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Abstract This study aimed to genetically characterize two fully-sequenced novel IncFII-type multidrug resistant (MDR) plasmids, p0716-KPC and p12181-KPC, recovered from two different clinical Klebsiella pneumoniae isolates. p0716-KPC and p12181-KPC had a very similar genomic content. The backbones of p0716-KPC/p12181-KPC contained two different replicons (belonging to a novel IncFII subtype and the Rep_3 family), the IncFIIK and IncFIIY maintenance regions, and conjugal transfer gene sets from IncFIIK-type plasmids and unknown origins. p0716-KPC and p12181-KPC carried similar three accessory resistance regions, namely ΔTn6209, a MDR region, and the bla KPC-2 region. Resistance genes bla KPC-2, mph(A), strAB, aacC2, qacEΔ1, sul1, sul2, and dfrA25, which are associated with transposons, integrons, and insertion sequence-based mobile units, were located in these accessory regions. p0716-KPC carried two additional resistance genes: aphA1a and bla TEM-1. Together, our analyses showed that p0716-KPC and p12181-KPC belong to a novel IncFII subtype and display a complex chimeric nature, and that the carbapenem resistance gene bla KPC-2 coexists with a lot of additional resistance genes on these two plasmids.