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Sentausa E, Basso P, Berry A, Adrait A, Bellement G, Couté Y, Lory S, Elsen S, Attrée I. Insertion sequences drive the emergence of a highly adapted human pathogen. Microb Genom 2019; 6. [PMID: 30946644 PMCID: PMC7643977 DOI: 10.1099/mgen.0.000265] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Pseudomonas aeruginosa is a highly adaptive opportunistic pathogen that can have serious health consequences in patients with lung disorders. Taxonomic outliers of P. aeruginosa of environmental origin have recently emerged as infectious for humans. Here, we present the first genome-wide analysis of an isolate that caused fatal haemorrhagic pneumonia. In two clones, CLJ1 and CLJ3, sequentially recovered from a patient with chronic pulmonary disease, insertion of a mobile genetic element into the P. aeruginosa chromosome affected major virulence-associated phenotypes and led to increased resistance to the antibiotics used to combat the infection. Comparative genome, proteome and transcriptome analyses revealed that this ISL3-family insertion sequence disrupted the genes for flagellar components, type IV pili, O-specific antigens, translesion polymerase and enzymes producing hydrogen cyanide. Seven-fold more insertions were detected in the later isolate, CLJ3, than in CLJ1, some of which modified strain susceptibility to antibiotics by disrupting the genes for the outer-membrane porin OprD and the regulator of β-lactamase expression AmpD. In the Galleria mellonella larvae model, the two strains displayed different levels of virulence, with CLJ1 being highly pathogenic. This study revealed insertion sequences to be major players in enhancing the pathogenic potential of a P. aeruginosa taxonomic outlier by modulating both its virulence and its resistance to antimicrobials, and explains how this bacterium adapts from the environment to a human host.
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Affiliation(s)
- Erwin Sentausa
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,Present address: Evotec ID (Lyon) SAS, Marcy l'Étoile, France
| | - Pauline Basso
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,Present address: Department of Microbiology and Immunology, University of California San Francisco (UCSF) School of Medicine, San Francisco, CA, USA
| | - Alice Berry
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France
| | - Annie Adrait
- Université Grenoble Alpes, CEA, Inserm, BIG-BGE, 38000 Grenoble, France
| | - Gwendoline Bellement
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,Université Grenoble Alpes, CEA, Inserm, BIG-BGE, 38000 Grenoble, France.,Present address: Biozentrum, University of Basel, Basel, Switzerland
| | - Yohann Couté
- Université Grenoble Alpes, CEA, Inserm, BIG-BGE, 38000 Grenoble, France
| | - Stephen Lory
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA
| | - Sylvie Elsen
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France
| | - Ina Attrée
- Université Grenoble Alpes, CNRS ERL5261, INSERM U1036, CEA, Laboratory Biology of Cancer and Infection, Bacterial Pathogenesis and Cellular Responses, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France
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Lam PL, Lee KKH, Wong RSM, Cheng GYM, Bian ZX, Chui CH, Gambari R. Recent advances on topical antimicrobials for skin and soft tissue infections and their safety concerns. Crit Rev Microbiol 2018; 44:40-78. [PMID: 28423970 DOI: 10.1080/1040841x.2017.1313811] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Antimicrobial resistance of disease-related microorganisms is considered a worldwide prevalent and serious issue which increases the failure of treatment outcomes and leads to high mortality. Considering that the increased resistance to systemic antimicrobial therapy often needs of the use of more toxic agents, topical antimicrobial therapy emerges as an attractive route for the treatment of infectious diseases. The topical antimicrobial therapy is based on the absorption of high drug doses in a readily accessible skin surface, resulting in a reduction of microbial proliferation at infected skin sites. Topical antimicrobials retain the following features: (a) they are able to escape the enzymatic degradation and rapid clearance in the gastrointestinal tract or the first-pass metabolism during oral administration; (b) alleviate the physical discomfort related to intravenous injection; (c) reduce possible adverse effects and drug interactions of systemic administrations; (d) increase patient compliance and convenience; and (e) reduce the treatment costs. Novel antimicrobials for topical application have been widely exploited to control the emergence of drug-resistant microorganisms. This review provides a description of antimicrobial resistance, common microorganisms causing skin and soft tissue infections, topical delivery route of antimicrobials, safety concerns of topical antimicrobials, recent advances, challenges and future prospective in topical antimicrobial development.
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Affiliation(s)
- P L Lam
- a Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - K K H Lee
- b Department of Medicine and Therapeutics, School of Biomedical Sciences, MOE Key Laboratory for Regenerative Medicine , The Chinese University of Hong Kong , Hong Kong , P.R. China
| | - R S M Wong
- b Department of Medicine and Therapeutics, School of Biomedical Sciences, MOE Key Laboratory for Regenerative Medicine , The Chinese University of Hong Kong , Hong Kong , P.R. China
| | - G Y M Cheng
- c Faculty of Health Sciences , University of Macau , Macau , P.R. China
| | - Z X Bian
- d Clinical Division, School of Chinese Medicine , Hong Kong Baptist University , Hong Kong , P.R. China
| | - C H Chui
- a Department of Applied Biology and Chemical Technology, State Key Laboratory of Chirosciences , The Hong Kong Polytechnic University , Hong Kong , P.R. China
- d Clinical Division, School of Chinese Medicine , Hong Kong Baptist University , Hong Kong , P.R. China
| | - R Gambari
- e Department of Life Sciences and Biotechnology, Centre of Biotechnology , University of Ferrara , Ferrara , Italy
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Martinez E, Pérez JE, Buelvas F, Tovar C, Vanegas N, Stokes HW. Establishment and multi drug resistance evolution of ST235 Pseudomonas aeruginosa strains in the intensive care unit of a Colombian hospital. Res Microbiol 2014; 165:852-6. [PMID: 25445011 DOI: 10.1016/j.resmic.2014.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 10/19/2014] [Accepted: 10/21/2014] [Indexed: 11/30/2022]
Abstract
Drug resistant Pseudomonas aeruginosa represents a therapeutic challenge. To assess the diversity of P. aeruginosa antibiotic resistant variants, isolates were recovered from hospital patients in Colombia. Thirty of 60 isolates contained class 1 integrons and five were of Sequence Type ST235 having appeared in a single intensive care unit. All five possessed an unusual integron but showed differences in gene cassette content and the presence/absence of insertion sequence IS26. This showed that differences can arise rapidly, even within a single ICU. Also, the emergence of IS26 in P. aeruginosa is contributing to the evolution of resistance in this bacterium.
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Affiliation(s)
- Elena Martinez
- The ithree Institute, University of Technology, P.O. Box 123, Broadway, Sydney, NSW 2007, Australia.
| | - Javier Escobar Pérez
- Laboratorio de Genética Molecular Bacteriana, Universidad El Bosque, Bogotá, Colombia.
| | - Francisco Buelvas
- Grupo de Resistencia Bacteriana y Enfermedades Tropicales, Universidad del Sinú, Monteria-Cordoba, Colombia.
| | - Catalina Tovar
- Grupo de Resistencia Bacteriana y Enfermedades Tropicales, Universidad del Sinú, Monteria-Cordoba, Colombia.
| | - Natasha Vanegas
- The ithree Institute, University of Technology, P.O. Box 123, Broadway, Sydney, NSW 2007, Australia; Laboratorio de Genética Molecular Bacteriana, Universidad El Bosque, Bogotá, Colombia.
| | - H W Stokes
- The ithree Institute, University of Technology, P.O. Box 123, Broadway, Sydney, NSW 2007, Australia.
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