Genomic analysis revealed a novel genotype of methicillin-susceptible Staphylococcus aureus isolated from a fatal sepsis case in dengue patient

Ngoi, Soo Tein and Niek, Wen Kiong and Lee, Yee Wan and AbuBakar, Sazaly and Teh, Cindy Shuan Ju (2021) Genomic analysis revealed a novel genotype of methicillin-susceptible Staphylococcus aureus isolated from a fatal sepsis case in dengue patient. Scientific Reports, 11 (1). ISSN 2045-2322, DOI https://doi.org/10.1038/s41598-021-83661-8.

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Abstract

Staphylococcus aureus (S. aureus) is an opportunistic pathogen capable of causing serious health implications in susceptible individuals once it invades the host's protective barriers. Methicillin-susceptible S. aureus (MSSA) often receives lesser attention although it has been frequently associated with serious infections in human. We aim to investigate the genomic features of a highly virulent yet pan susceptible MSSA strain (coded as HS-MSSA) which caused concurrent bacteraemia in a dengue patient, ultimately resulted in sepsis death of the patient. Whole genome sequence analysis was performed. The draft genome of HS-MSSA is approximately 2.78 Mb (GC content=32.7%) comprising of 2637 predicted coding sequences. In silico genotyping of the HS-MSSA strain revealed a novel combined genotype (t091/ST2990). The HS-MSSA carries a SaPIn1-like pathogenicity island that harbours the staphylococcal enterotoxin and enterotoxin-like genes (sec3 and selL). The strain-specific beta -lactamase (blaZ)-bearing plasmid region was identified in HS-MSSA. Core genome phylogeny showed that the HS-MSSA strain shared a common ancestry with the European MRSA clone. We report herein the genomic features of an MSSA lineage with novel genotype previously not reported elsewhere.

Item Type: Article
Funders: University of Malaya Research Fund (RU008-2018)
Uncontrolled Keywords: Genomic analysis; Staphylococcus aureus; Methicillin-susceptible; Fatal sepsis case; Dengue patient
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine
Faculty of Medicine > Medicine Department
Deputy Vice Chancellor (Research & Innovation) Office > Tropical Infectious Diseases Research and Education Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 17 Jun 2022 03:19
Last Modified: 17 Jun 2022 03:19
URI: http://eprints.um.edu.my/id/eprint/27940

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