Comparative Genomic Analysis of Staphylococcal Cassette Chromosome mec Type V Staphylococcus aureus Strains and Estimation of the Emergence of SCCmec V Clinical Isolates in Korea

Background: Staphylococcal cassette chromosome mec type V (SCCmec V) methicillin-resistant Staphylococcus aureus (MRSA) has been recovered from patients and livestock. Using comparative genomic analyses, we evaluated the phylogenetic emergence of SCCmec V after transmission from overseas donor strains to Korean recipient strains.

Methods: Sixty-three complete MRSA SCCmec V genomes (including six Korean clinical isolates) were used to construct a phylogenetic tree. Single-nucleotide polymorphisms were identified using Snippy, and a maximum-likelihood-based phylogenetic tree was constructed using RAxML. The possible emergence of the most common ancestor was estimated using BactDating. To estimate mecA horizontal gene transfer (HGT) events, Ranger-dtl was applied to 818 SCCmec V strains using publicly available whole-genome data.

Results: The phylogenetic tree showed five major clades. German strains formed a major clade; their possible origin was traced to the 1980s. The emergence of Korean SCCmec V clinical isolates was traced to 2000-2010. mecA HGT events in Staphylococcus spp. were identified in seven strains. P7 (Hong Kong outbreak strain) served as the donor strain for two Korean sequence type (ST) 59 strains, whereas the other five recipient strains emerged from different SCCmec V donors.

Conclusions: Most Korean SCCmec V strains may have emerged during 2000-2010. A unique MRSA SCCmec V strain, ST72 (a Korean common type of community-associated MRSA), was also identified. The genomic dynamics of this clone with a zoonotic background should be monitored to accurately understand MRSA evolution.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

2023

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:44

Enthalten in:

Annals of laboratory medicine - 44(2023), 1 vom: 01. Jan., Seite 47-55

Sprache:

Englisch

Beteiligte Personen:

Takahashi, Takashi [VerfasserIn]
Kim, Hyaekang [VerfasserIn]
Kim, Han-Sung [VerfasserIn]
Kim, Hyun Soo [VerfasserIn]
Song, Wonkeun [VerfasserIn]
Kim, Jae-Seok [VerfasserIn]

Links:

Volltext

Themen:

Clades
Comparative genomic analysis
Donor–recipient
Horizontal gene transfer
Journal Article
Korea
Methicillin
One Health
Phylogeny
SCCmec V
Staphylococcus
Whole genome sequence

Anmerkungen:

Date Completed 05.09.2023

Date Revised 11.09.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.3343/alm.2024.44.1.47

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM361629990