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Gambino AS, Déraspe M, Álvarez VE, Quiroga MP, Corbeil J, Roy PH, Centrón D. Serratia marcescens SCH909 as reservoir and source of genetic elements related to wide dissemination of antimicrobial resistance mechanisms. FEMS Microbiol Lett 2021; 368:6321840. [PMID: 34264334 DOI: 10.1093/femsle/fnab086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 07/09/2021] [Indexed: 11/14/2022] Open
Abstract
Serratia marcescens SCH909 is a multidrug resistant strain isolated in 1988 harboring three class 1 integrons. We wondered if these integrons were retained over time and if there were other antimicrobial resistant determinants contributing to its multidrug resistant profile. Genomic analysis showed a fourth multidrug resistance integron, a Tn7 transposon with dfrA1-sat2-ybeA-ybfA-ybfB-ybgA gene cassettes in the variable region. Insertion sequences were involved in the genesis of novel composite transposons in the L4 subtype plasmid pSCH909, such as Tn6824 carrying an arsenic regulon and two head to head class 1 integrons surrounded by two complete IS1. Remarkably, a novel chromosomal genomic island, SmaR, was identified, closely related to Multiple Antimicrobial Resistance Regions (MARR), usually found in AbaR0-type and AbGRI2-0 from global clones of Acinetobacter baumannii, and in M-type plasmids circulating in Enterobacteriaceae. Maintenance studies showed that the three class 1 integrons were maintained over 1 month without antimicrobial pressure. Since S. marcescens is considered a relevant nosocomial pathogen that can have a wide range of niches - human, plant, animal, soil and inanimate surfaces, our findings support the ability of this species to capture, maintain and spread a broad variety of antimicrobial resistance elements.
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Affiliation(s)
- Anahí S Gambino
- Instituto de Investigaciones en Microbiología y Parasitología Médica, Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas (IMPaM, UBA-CONICET), Facultad de Medicina, Paraguay 2155, piso 12, Ciudad Autónoma de Buenos Aires, Argentina
| | - Maxime Déraspe
- Département de Médecine Moléculaire, Université Laval, Avenue de la Médecine 1050, Pavillon Ferdinand-Vandry, Suite 4835, Québec, Canada.,Centre de Recherche en Données Massives, Université Laval, Avenue de la Médecine 1050, Pavillon Adrien-Pouliot PLT-3947, Québec, Canada.,Centre de Recherche en Infectiologie, Université Laval, Boulevard Laurier 2705, Local RC-709, Québec, Canada
| | - Verónica E Álvarez
- Instituto de Investigaciones en Microbiología y Parasitología Médica, Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas (IMPaM, UBA-CONICET), Facultad de Medicina, Paraguay 2155, piso 12, Ciudad Autónoma de Buenos Aires, Argentina
| | - María Paula Quiroga
- Instituto de Investigaciones en Microbiología y Parasitología Médica, Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas (IMPaM, UBA-CONICET), Facultad de Medicina, Paraguay 2155, piso 12, Ciudad Autónoma de Buenos Aires, Argentina
| | - Jacques Corbeil
- Département de Médecine Moléculaire, Université Laval, Avenue de la Médecine 1050, Pavillon Ferdinand-Vandry, Suite 4835, Québec, Canada.,Centre de Recherche en Données Massives, Université Laval, Avenue de la Médecine 1050, Pavillon Adrien-Pouliot PLT-3947, Québec, Canada.,Centre de Recherche en Infectiologie, Université Laval, Boulevard Laurier 2705, Local RC-709, Québec, Canada
| | - Paul H Roy
- Centre de Recherche en Infectiologie, Université Laval, Boulevard Laurier 2705, Local RC-709, Québec, Canada.,Département de Biochimie, de Microbiologie et de Bio-informatique, Université Laval, Faculté des sciences et de génie, pavillon Alexandre-Vachon 1045, av. de la Médecine, local 3261, Québec, Canada
| | - Daniela Centrón
- Instituto de Investigaciones en Microbiología y Parasitología Médica, Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas (IMPaM, UBA-CONICET), Facultad de Medicina, Paraguay 2155, piso 12, Ciudad Autónoma de Buenos Aires, Argentina
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