Whole-Genome Analysis of Two Copies of blaNDM-1 Gene Carrying Acinetobacter johnsonii Strain Acsw19 Isolated from Sichuan, China
| Autor: | Yingshun Zhou, Guangxi Wang, Lingtong Tang, Guoyuan Zou, Jingping Zhang, Baoli Zhu, Zhikun Zhang, Xiaoyan Hu, Junping She, Wei Shen, Li Xiang |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Pharmacology Genetics Phylogenetic tree Circular bacterial chromosome 030106 microbiology Chromosome biochemical phenomena metabolism and nutrition Biology bacterial infections and mycoses Genome 03 medical and health sciences 0302 clinical medicine Infectious Diseases Plasmid Genomic island Pharmacology (medical) 030212 general & internal medicine Gene Prophage |
| Zdroj: | Infection and Drug Resistance. 13:855-865 |
| ISSN: | 1178-6973 |
| Popis: | Purpose To characterize the genetic feature of the carbapenems resistant Acinetobacter johnsonii strain Acsw19 isolated from municipal sludge. This strain was found to carry two copies of bla NDM-1, cmlB1-like gene, and bla OXA-211-like gene along with other 8 antimicrobial resistance genes, 3 plasmids, 15 genomic islands and 8 prophages. Methods A carbapenem-resistant Acinetobacter johnsonii strain Acsw19 isolated from municipal sludge was subjected to whole-genome sequencing (WGS) via the PacBio and Illumina MiSeq platforms. Thereafter, the characteristic was analyzed by a series of bioinformatics software. Results The results showed that the genome of Acsw19 was consisted of a 3,433,749 bp circular chromosome and 3 circular plasmids, pAcsw19-1 (11,161 bp), pAcsw19-2 (351,885 bp) and pAcsw19-3 (38,391bp), respectively. Resistome analysis showed that Acsw19 carried 12 antimicrobial resistance genes, including 6 [cmlB1-like, bla NDM-1, bla OXA-58, aph (3')-VIa, msr(E) and mph(E)] in the plasmid pAcsw19-2 and 6 (bla OXA-211-like, bla NDM-1, aph(3")-Ib, aph(6)-Id, sul2, and floR) in the chromosome genome. Specifically, the cmlB1-like gene shared 86.33%, 71.7% and 71.9% similarities with the cmlB1, cmlA4 and cmlA8 gene, and the bla OXA-211-like gene shared 94.4%, 95.39% and 96.36% similarities with bla OXA-211, bla OXA-643 and bla OXA-652, at the nucleotide level, respectively. Phylogenetic analysis showed that the bla OXA-211-like gene and cmlB1-like gene had the closest evolutionary relationship with bla OXA-643 and cmlB1, respectively. These results indicated that the bla OXA-211-like and cmlB1-like genes identified in the current study should be the novel variant resistance genes. Conclusion Carrying of two copies of bla NDM-1, cmlB1-like, bla OXA-211-like and along with other 8 antimicrobial resistance genes, 3 plasmids, 15 genomic islands and 8 prophages Acinetobacter johnsonii strain might increase the possibility of spreading of resistance genes. |
| Databáze: | OpenAIRE |
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