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Arconada Nuin E, Vilken T, Xavier BB, Doua J, Morrow B, Geurtsen J, Go O, Spiessens B, Sarnecki M, Poolman J, Bonten M, Ekkelenkamp M, Lammens C, Goossens H, Glupczynski Y, Van Puyvelde S. A microbiological and genomic perspective of globally collected Escherichia coli from adults hospitalized with invasive E. coli disease. J Antimicrob Chemother 2024; 79:2142-2151. [PMID: 39001716 PMCID: PMC11368426 DOI: 10.1093/jac/dkae182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 05/14/2024] [Indexed: 07/15/2024] Open
Abstract
OBJECTIVES Escherichia coli can cause infections in the urinary tract and in normally sterile body sites leading to invasive E. coli disease (IED), including bacteraemia and sepsis, with older populations at increased risk. We aimed to estimate the theoretical coverage rate by the ExPEC4V and 9V vaccine candidates. In addition, we aimed at better understanding the diversity of E. coli isolates, including their genetic and phenotypic antimicrobial resistance (AMR), sequence types (STs), O-serotypes and the bacterial population structure. METHODS Blood and urine culture E. coli isolates (n = 304) were collected from hospitalized patients ≥60 years (n = 238) with IED during a multicentric, observational study across three continents. All isolates were tested for antimicrobial susceptibility, O-serotyped, whole-genome sequenced and bioinformatically analysed. RESULTS A large diversity of STs and of O-serotypes were identified across all centres, with O25b-ST131, O6-ST73 and O1-ST95 being the most prevalent types. A total of 45.4% and 64.7% of all isolates were found to have an O-serotype covered by the ExPEC4V and ExPEC9V vaccine candidates, respectively. The overall frequency of MDR was 37.4% and ST131 was predominant among MDR isolates. Low in-patient genetic variability was observed in cases where multiple isolates were collected from the same patient. CONCLUSIONS Our results highlight the predominance of MDR O25b-ST131 E. coli isolates across diverse geographic areas. These findings provide further baseline data on the theoretical coverage of novel vaccines targeting E. coli associated with IED in older adults and their associated AMR levels.
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Affiliation(s)
- Enya Arconada Nuin
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Tuba Vilken
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Basil Britto Xavier
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
- Department of Medical Microbiology and Infection Control, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Joachim Doua
- Janssen Research & Development, Infectious Diseases & Vaccines, Janssen Pharmaceutica, Beerse, Belgium
| | - Brian Morrow
- Janssen Research & Development, Raritan, NJ, USA
| | - Jeroen Geurtsen
- Bacterial Vaccines Discovery & Early Development, Janssen Vaccines & Prevention B.V., Leiden, The Netherlands
| | - Oscar Go
- Janssen Research & Development, Raritan, NJ, USA
| | - Bart Spiessens
- Janssen Research & Development, Infectious Diseases & Vaccines, Janssen Pharmaceutica, Beerse, Belgium
| | - Michal Sarnecki
- Janssen Vaccines, Branch of Cilag GmbH International, Bern, Switzerland
| | - Jan Poolman
- Bacterial Vaccines Discovery & Early Development, Janssen Vaccines & Prevention B.V., Leiden, The Netherlands
| | - Marc Bonten
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- ECRAID, Utrecht, The Netherlands
| | - Miquel Ekkelenkamp
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Christine Lammens
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Herman Goossens
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Youri Glupczynski
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Sandra Van Puyvelde
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge CB2 0AW, UK
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Esposito F, Cardoso B, Fontana H, Fuga B, Cardenas-Arias A, Moura Q, Fuentes-Castillo D, Lincopan N. Genomic Analysis of Carbapenem-Resistant Pseudomonas aeruginosa Isolated From Urban Rivers Confirms Spread of Clone Sequence Type 277 Carrying Broad Resistome and Virulome Beyond the Hospital. Front Microbiol 2021; 12:701921. [PMID: 34539602 PMCID: PMC8446631 DOI: 10.3389/fmicb.2021.701921] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/20/2021] [Indexed: 11/13/2022] Open
Abstract
The dissemination of antibiotic-resistant priority pathogens beyond hospital settings is both a public health and an environmental problem. In this regard, high-risk clones exhibiting a multidrug-resistant (MDR) or extensively drug-resistant (XDR) phenotype have shown rapid adaptation at the human-animal-environment interface. In this study, we report genomic data and the virulence potential of the carbapenemase, São Paulo metallo-β-lactamase (SPM-1)-producing Pseudomonas aeruginosa strains (Pa19 and Pa151) isolated from polluted urban rivers, in Brazil. Bioinformatic analysis revealed a wide resistome to clinically relevant antibiotics (carbapenems, aminoglycosides, fosfomycin, sulfonamides, phenicols, and fluoroquinolones), biocides (quaternary ammonium compounds) and heavy metals (copper), whereas the presence of exotoxin A, alginate, quorum sensing, types II, III, and IV secretion systems, colicin, and pyocin encoding virulence genes was associated with a highly virulent behavior in the Galleria mellonella infection model. These results confirm the spread of healthcare-associated critical-priority P. aeruginosa belonging to the MDR sequence type 277 (ST277) clone beyond the hospital, highlighting that the presence of these pathogens in environmental water samples can have clinical implications for humans and other animals.
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Affiliation(s)
- Fernanda Esposito
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
| | - Brenda Cardoso
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Herrison Fontana
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
| | - Bruna Fuga
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Adriana Cardenas-Arias
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Quézia Moura
- Federal Institute of Education, Science and Technology of Espírito Santo, Vila Velha, Brazil
| | - Danny Fuentes-Castillo
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Department of Pathology, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Nilton Lincopan
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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3
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Third Generation Cephalosporin Resistant Enterobacterales Infections in Hospitalized Horses and Donkeys: A Case-Case-Control Analysis. Antibiotics (Basel) 2021; 10:antibiotics10020155. [PMID: 33557061 PMCID: PMC7913880 DOI: 10.3390/antibiotics10020155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 01/31/2021] [Accepted: 02/01/2021] [Indexed: 12/18/2022] Open
Abstract
In human medicine, infections caused by third-generation cephalosporin-resistant Enterobacterales (3GCRE) are associated with detrimental outcomes. In veterinary medicine, controlled epidemiological analyses are lacking. A matched case–case–control investigation (1:1:1 ratio) was conducted in a large veterinary hospital (2017–2019). In total, 29 infected horses and donkeys were matched to 29 animals with third-generation cephalosporin-susceptible Enterobacterales (3GCSE) infections, and 29 uninfected controls (overall n = 87). Despite multiple significant associations per bivariable analyses, the only independent predictor for 3GCRE infection was recent exposure to antibiotics (adjusted odds ratio (aOR) = 104, p < 0.001), but this was also an independent predictor for 3GCSE infection (aOR = 22, p < 0.001), though the correlation with 3GCRE was significantly stronger (aOR = 9.3, p = 0.04). In separated multivariable outcome models, 3GCRE infections were independently associated with reduced clinical cure rates (aOR = 6.84, p = 0.003) and with 90 days mortality (aOR = 3.6, p = 0.003). Klebsiella spp. were the most common 3GCRE (36%), and blaCTX-M-1 was the major β-lactamase (79%). Polyclonality and multiple sequence types were evident among all Enterobacterales (e.g., Klebsiella pneumoniae, Escherichia coli, Enterobacter cloacae). The study substantiates the significance of 3GCRE infections in equine medicine, and their independent detrimental impact on cure rates and mortality. Multiple Enterobacterales genera, subtypes, clones and mechanisms of resistance are prevalent among horses and donkeys with 3GCRE infections.
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van Duijkeren E, Schwarz C, Bouchard D, Catry B, Pomba C, Baptiste KE, Moreno MA, Rantala M, Ružauskas M, Sanders P, Teale C, Wester AL, Ignate K, Kunsagi Z, Jukes H. The use of aminoglycosides in animals within the EU: development of resistance in animals and possible impact on human and animal health: a review. J Antimicrob Chemother 2020; 74:2480-2496. [PMID: 31002332 DOI: 10.1093/jac/dkz161] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Aminoglycosides (AGs) are important antibacterial agents for the treatment of various infections in humans and animals. Following extensive use of AGs in humans, food-producing animals and companion animals, acquired resistance among human and animal pathogens and commensal bacteria has emerged. Acquired resistance occurs through several mechanisms, but enzymatic inactivation of AGs is the most common one. Resistance genes are often located on mobile genetic elements, facilitating their spread between different bacterial species and between animals and humans. AG resistance has been found in many different bacterial species, including those with zoonotic potential such as Salmonella spp., Campylobacter spp. and livestock-associated MRSA. The highest risk is anticipated from transfer of resistant enterococci or coliforms (Escherichia coli) since infections with these pathogens in humans would potentially be treated with AGs. There is evidence that the use of AGs in human and veterinary medicine is associated with the increased prevalence of resistance. The same resistance genes have been found in isolates from humans and animals. Evaluation of risk factors indicates that the probability of transmission of AG resistance from animals to humans through transfer of zoonotic or commensal foodborne bacteria and/or their mobile genetic elements can be regarded as high, although there are no quantitative data on the actual contribution of animals to AG resistance in human pathogens. Responsible use of AGs is of great importance in order to safeguard their clinical efficacy for human and veterinary medicine.
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Affiliation(s)
| | - Christine Schwarz
- Federal Office of Consumer Protection and Food Safety, Berlin, Germany
| | - Damien Bouchard
- French Agency for Food, Environmental, and Occupational Safety, National Agency for Veterinary Medicinal Products, Fougères, France
| | - Boudewijn Catry
- Sciensano, Brussels, Belgium
- Faculty of Medicine, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - Constança Pomba
- Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | | | - Miguel A Moreno
- Faculty of Veterinary Medicine, Complutense University, Madrid, Spain
| | - Merja Rantala
- Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | | | - Pascal Sanders
- French Agency for Food, Environmental, and Occupational Safety, Fougères Laboratory, Fougères, France
| | | | | | | | | | - Helen Jukes
- Veterinary Medicines Directorate, Addlestone, UK
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Trigo da Roza F, Couto N, Carneiro C, Cunha E, Rosa T, Magalhães M, Tavares L, Novais Â, Peixe L, Rossen JW, Lamas LP, Oliveira M. Commonality of Multidrug-Resistant Klebsiella pneumoniae ST348 Isolates in Horses and Humans in Portugal. Front Microbiol 2019; 10:1657. [PMID: 31379799 PMCID: PMC6657530 DOI: 10.3389/fmicb.2019.01657] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 07/04/2019] [Indexed: 11/17/2022] Open
Abstract
Multidrug-resistant (MDR) Klebsiella pneumoniae is considered a major global concern by the World Health Organization. Evidence is growing on the importance of circulation of MDR bacterial populations between animals and humans. Horses have been shown to carry commensal isolates of this bacterial species and can act as human MDR bacteria reservoirs. In this study, we characterized an extended-spectrum β-lactamase (ESBL)-producing K. pneumoniae sequence type (ST) 348 isolate from a horse, an ST reported for the first time in an animal, using next-generation sequencing. We compared it with six other MDR K. pneumoniae ST348 human isolates previously identified in health-care facilities in Portugal using a core genome multi-locus sequence typing approach to evaluate a possible genetic link. The horse isolate was resistant to most of the antimicrobials tested, including 3rd generation cephalosporins, fluoroquinolones, and aminoglycosides, and presented several antimicrobial resistance genes, including blaESBL. Twenty-one allele differences were found between the horse isolate and the most similar human isolate, suggesting a recent common ancestor. Other similarities were observed regarding the content on antimicrobial resistance genes, plasmid incompatibility groups, and capsular and somatic antigens. This study illustrates the relevance of the dissemination of MDR strains, and enhances that identification of these types of bacterial strains in both human and veterinary settings is of significant relevance in order to understand and implement combined control strategies for MDR bacteria in animals and humans.
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Affiliation(s)
- Filipa Trigo da Roza
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Natacha Couto
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Carla Carneiro
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Eva Cunha
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Teresa Rosa
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Mariana Magalhães
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Luís Tavares
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Ângela Novais
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Luísa Peixe
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - John W Rossen
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Luís P Lamas
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Manuela Oliveira
- CIISA-Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
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6
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Abstract
Multidrug resistance in Escherichia coli has become a worrying issue that is increasingly observed in human but also in veterinary medicine worldwide. E. coli is intrinsically susceptible to almost all clinically relevant antimicrobial agents, but this bacterial species has a great capacity to accumulate resistance genes, mostly through horizontal gene transfer. The most problematic mechanisms in E. coli correspond to the acquisition of genes coding for extended-spectrum β-lactamases (conferring resistance to broad-spectrum cephalosporins), carbapenemases (conferring resistance to carbapenems), 16S rRNA methylases (conferring pan-resistance to aminoglycosides), plasmid-mediated quinolone resistance (PMQR) genes (conferring resistance to [fluoro]quinolones), and mcr genes (conferring resistance to polymyxins). Although the spread of carbapenemase genes has been mainly recognized in the human sector but poorly recognized in animals, colistin resistance in E. coli seems rather to be related to the use of colistin in veterinary medicine on a global scale. For the other resistance traits, their cross-transfer between the human and animal sectors still remains controversial even though genomic investigations indicate that extended-spectrum β-lactamase producers encountered in animals are distinct from those affecting humans. In addition, E. coli of animal origin often also show resistances to other-mostly older-antimicrobial agents, including tetracyclines, phenicols, sulfonamides, trimethoprim, and fosfomycin. Plasmids, especially multiresistance plasmids, but also other mobile genetic elements, such as transposons and gene cassettes in class 1 and class 2 integrons, seem to play a major role in the dissemination of resistance genes. Of note, coselection and persistence of resistances to critically important antimicrobial agents in human medicine also occurs through the massive use of antimicrobial agents in veterinary medicine, such as tetracyclines or sulfonamides, as long as all those determinants are located on the same genetic elements.
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Mao J, Liu W, Wang W, Sun J, Lei S, Feng Y. Antibiotic exposure elicits the emergence of colistin- and carbapenem-resistant Escherichia coli coharboring MCR-1 and NDM-5 in a patient. Virulence 2018; 9:1001-1007. [PMID: 30047824 PMCID: PMC6067848 DOI: 10.1080/21505594.2018.1486140] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 06/04/2018] [Indexed: 10/28/2022] Open
Affiliation(s)
- Jinpeng Mao
- Department of Neurosurgery, Tianmen First People’s Hospital, Tianmen, China
| | - Wugao Liu
- Clinical Laboratory of Lishui People’s Hospital, Lishui, China
| | - Wei Wang
- Clinical Laboratory of Lishui People’s Hospital, Lishui, China
| | - Jian Sun
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
| | - Sheng Lei
- Department of Medical Microbiology & Parasitology and Department of General Intensive Care Unit of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Youjun Feng
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China
- Department of Medical Microbiology & Parasitology and Department of General Intensive Care Unit of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- College of Animal Sciences, Zhejiang University, Hangzhou, China
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8
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Molecular characterisation of extended-spectrum β-lactamase- and plasmid AmpC-producing Escherichia coli strains isolated from broilers in Béjaïa, Algeria. J Glob Antimicrob Resist 2016; 6:108-112. [DOI: 10.1016/j.jgar.2016.04.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 11/19/2022] Open
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Dropa M, Lincopan N, Balsalobre LC, Oliveira DE, Moura RA, Fernandes MR, da Silva QM, Matté GR, Sato MIZ, Matté MH. Genetic background of novel sequence types of CTX-M-8- and CTX-M-15-producing Escherichia coli and Klebsiella pneumoniae from public wastewater treatment plants in São Paulo, Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:4953-4958. [PMID: 26782324 DOI: 10.1007/s11356-016-6079-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/06/2016] [Indexed: 05/29/2023]
Abstract
The release of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae to the environment is a public health issue worldwide. The aim of this study was to investigate the genetic background of genes encoding ESBLs in wastewater treatment plants (WWTPs) in São Paulo, southeastern Brazil. In 2009, during a local surveillance study, seven ESBL-producing Enterobacteriaceae strains were recovered from five WWTPs and screened for ESBL genes and mobile genetic elements. Multilocus sequence typing (MLST) was carried out, and wild plasmids were transformed into electrocompetent Escherichia coli. S1-PFGE technique was used to verify the presence of high molecular weight plasmids in wild-type strains and in bla ESBL-containing E. coli transformants. Strains harbored bla CTX-M-8, bla CTX-M-15, and/or bla SHV-28. Sequencing results showed that bla CTX-M-8 and bla CTX-M-15 genes were associated with IS26. MLST revealed new sequence types for E. coli (ST4401, ST4402, ST4403, and ST4445) and Klebsiella pneumoniae (ST1574), except for one K. pneumoniae from ST307 and Enterobacter cloacae from ST131. PCR and S1-PFGE results showed CTX-M-producing E. coli transformants carried heavy plasmids sizing 48.5-209 kb, which belonged to IncI1, IncF, and IncM1 incompatibility groups. This is the first report of CTX-M-8 and SHV-28 enzymes in environmental samples, and the present results demonstrate the plasmid-mediated spread of CTX-M-encoding genes through five WWTPs in São Paulo, Brazil, suggesting WWTPs are hotspots for the transfer of ESBL genes and confirming the urgent need to improve the management of sewage in order to minimize the dissemination of resistance genes to the environment.
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Affiliation(s)
- Milena Dropa
- Public Health Laboratory, School of Public Health, University of São Paulo, Avenida Dr. Arnaldo 715, Cerqueira César, 01146-904, São Paulo, SP, Brazil.
| | - Nilton Lincopan
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 1374, Butantã, 05508-900, São Paulo, SP, Brazil
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, Avenida Professor Lineu Prestes, 580, Butantã, 05434-070, São Paulo, SP, Brazil
| | - Livia C Balsalobre
- Public Health Laboratory, School of Public Health, University of São Paulo, Avenida Dr. Arnaldo 715, Cerqueira César, 01146-904, São Paulo, SP, Brazil
| | - Danielle E Oliveira
- Public Health Laboratory, School of Public Health, University of São Paulo, Avenida Dr. Arnaldo 715, Cerqueira César, 01146-904, São Paulo, SP, Brazil
| | - Rodrigo A Moura
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 1374, Butantã, 05508-900, São Paulo, SP, Brazil
| | - Miriam Rodriguez Fernandes
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, Avenida Professor Lineu Prestes, 580, Butantã, 05434-070, São Paulo, SP, Brazil
| | - Quézia Moura da Silva
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Avenida Professor Lineu Prestes, 1374, Butantã, 05508-900, São Paulo, SP, Brazil
| | - Glavur R Matté
- Public Health Laboratory, School of Public Health, University of São Paulo, Avenida Dr. Arnaldo 715, Cerqueira César, 01146-904, São Paulo, SP, Brazil
| | - Maria I Z Sato
- Environmental Company of São Paulo State (CETESB), Avenida Professor Frederico Hermann Jr, 345, Pinheiros, 05489-900, São Paulo, SP, Brazil
| | - Maria H Matté
- Public Health Laboratory, School of Public Health, University of São Paulo, Avenida Dr. Arnaldo 715, Cerqueira César, 01146-904, São Paulo, SP, Brazil
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Heterologous Expression and Functional Characterization of the Exogenously Acquired Aminoglycoside Resistance Methyltransferases RmtD, RmtD2, and RmtG. Antimicrob Agents Chemother 2015; 60:699-702. [PMID: 26552988 DOI: 10.1128/aac.02482-15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 11/06/2015] [Indexed: 11/20/2022] Open
Abstract
The exogenously acquired 16S rRNA methyltransferases RmtD, RmtD2, and RmtG were cloned and heterologously expressed in Escherichia coli, and the recombinant proteins were purified to near homogeneity. Each methyltransferase conferred an aminoglycoside resistance profile consistent with m(7)G1405 modification, and this activity was confirmed by in vitro 30S methylation assays. Analyses of protein structure and interaction with S-adenosyl-l-methionine suggest that the molecular mechanisms of substrate recognition and catalysis are conserved across the 16S rRNA (m(7)G1405) methyltransferase family.
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