Memorias do Instituto Oswaldo Cruz · 2022
Mycolicibacterium fortuitum genomic epidemiology, resistome and virulome.
СтатьяНазвание и аннотация: Перевод в очереди
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Morgado Sergio, Ramos Nilcéia de Veiga, Freitas Fernanda, da Fonseca Érica Lourenço, Vicente Ana Carolina
Аннотация
BACKGROUND: Mycolicibacterium fortuitum is an opportunistic pathogen associated with human and animal infection worldwide. Studies concerning this species are mainly represented by case reports, some of them addressing drug susceptibility with a focus on a specific geographic region, so there is a gap in relation to the global epidemiological scenario.
OBJECTIVES: We aimed determine the global epidemiological scenario of M. fortuitum and analyse its traits associated with pathogenicity.
METHODS: Based on publicly available genomes of M. fortuitum and a genome from Brazil (this study), we performed a genomic epidemiology analysis and in silico and in vitro characterisation of the resistome and virulome of this species.
FINDINGS: Three main clusters were defined, one including isolates from the environment, human and animal infections recovered over nearly a century. An apparent intrinsic resistome comprises mechanisms associated with macrolides, beta-lactams, aminoglycosides and antitubercular drugs such as rifampin. Besides, the virulome presented Type VII secretion systems (T7SS), including ESX-1, ESX-3, ESX-4 and ESX-4-bis, some of which play a role on the virulence of Mycobacteriaceae species.
MAIN CONCLUSIONS: Here, M. fortuitum was revealed as a reservoir of an expressive intrinsic resistome, as well as a virulome that may contribute to its success as a global opportunist pathogen.
OBJECTIVES: We aimed determine the global epidemiological scenario of M. fortuitum and analyse its traits associated with pathogenicity.
METHODS: Based on publicly available genomes of M. fortuitum and a genome from Brazil (this study), we performed a genomic epidemiology analysis and in silico and in vitro characterisation of the resistome and virulome of this species.
FINDINGS: Three main clusters were defined, one including isolates from the environment, human and animal infections recovered over nearly a century. An apparent intrinsic resistome comprises mechanisms associated with macrolides, beta-lactams, aminoglycosides and antitubercular drugs such as rifampin. Besides, the virulome presented Type VII secretion systems (T7SS), including ESX-1, ESX-3, ESX-4 and ESX-4-bis, some of which play a role on the virulence of Mycobacteriaceae species.
MAIN CONCLUSIONS: Here, M. fortuitum was revealed as a reservoir of an expressive intrinsic resistome, as well as a virulome that may contribute to its success as a global opportunist pathogen.