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Kolsi A, Haukka K, Dougnon V, Agbankpè AJ, Fabiyi K, Virta M, Skurnik M, Kantele A, Kiljunen S. Isolation and characterization of three novel Acinetobacter baumannii phages from Beninese hospital wastewater. Arch Virol 2023; 168:228. [PMID: 37574509 PMCID: PMC10423700 DOI: 10.1007/s00705-023-05845-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/19/2023] [Indexed: 08/15/2023]
Abstract
Acinetobacter baumannii is an opportunistic pathogen that is mostly associated with hospital-acquired infections. The rapid emergence of multi- and pan-drug-resistant Acinetobacter strains poses an increasing challenge in hospitals. Phage therapy offers one treatment option for infections caused by A. baumannii. We isolated three phages from Beninese hospital wastewater - fBenAci001, fBenAci002, and fBenAci003 - that infected clinical A. baumannii strains from Finnish patients. Phylogenetic analysis showed that these phages resemble phages of the genus Friunavirus, family Autographiviridae. The isolated phages meet the requirements set for phages used for phage therapy. However, they were found to have a narrow host range, which may limit their therapeutic use.
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Affiliation(s)
- Anna Kolsi
- Human Microbiome Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Kaisa Haukka
- Human Microbiome Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Victorien Dougnon
- Research Unit in Applied Microbiology and Pharmacology of natural substances, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Abomey Calavi, Benin
| | - Alidehou Jerrold Agbankpè
- Research Unit in Applied Microbiology and Pharmacology of natural substances, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Abomey Calavi, Benin
| | - Kafayath Fabiyi
- Research Unit in Applied Microbiology and Pharmacology of natural substances, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Abomey Calavi, Benin
| | - Marko Virta
- Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Mikael Skurnik
- Human Microbiome Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Division of Clinical Microbiology, HUS Diagnostic Center, Hospital District of Helsinki and Uusimaa, Helsinki, Finland
| | - Anu Kantele
- Human Microbiome Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Meilahti Vaccine Research Center MeVac, Infectious Diseases, Helsinki University, Hospital District of Helsinki and Uusimaa, Helsinki, Finland
| | - Saija Kiljunen
- Human Microbiome Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
- Division of Clinical Microbiology, HUS Diagnostic Center, Hospital District of Helsinki and Uusimaa, Helsinki, Finland.
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Townsend EM, Kelly L, Gannon L, Muscatt G, Dunstan R, Michniewski S, Sapkota H, Kiljunen SJ, Kolsi A, Skurnik M, Lithgow T, Millard AD, Jameson E. Isolation and Characterization of Klebsiella Phages for Phage Therapy. Phage (New Rochelle) 2021; 2:26-42. [PMID: 33796863 PMCID: PMC8006926 DOI: 10.1089/phage.2020.0046] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Introduction: Klebsiella is a clinically important pathogen causing a variety of antimicrobial resistant infections in both community and nosocomial settings, particularly pneumonia, urinary tract infection, and sepsis. Bacteriophage (phage) therapy is being considered a primary option for the treatment of drug-resistant infections of these types. Methods: We report the successful isolation and characterization of 30 novel, genetically diverse Klebsiella phages. Results: The isolated phages span six different phage families and nine genera, representing both lysogenic and lytic lifestyles. Individual Klebsiella phage isolates infected up to 11 of the 18 Klebsiella capsule types tested, and all 18 capsule-types were infected by at least one of the phages. Conclusions: Of the Klebsiella-infecting phages presented in this study, the lytic phages are most suitable for phage therapy, based on their broad host range, high virulence, short lysis period and given that they encode no known toxin or antimicrobial resistance genes. Phage isolates belonging to the Sugarlandvirus and Slopekvirus genera were deemed most suitable for phage therapy based on our characterization. Importantly, when applied alone, none of the characterized phages were able to suppress the growth of Klebsiella for more than 12 h, likely due to the inherent ease of Klebsiella to generate spontaneous phage-resistant mutants. This indicates that for successful phage therapy, a cocktail of multiple phages would be necessary to treat Klebsiella infections.
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Affiliation(s)
- Eleanor M. Townsend
- Department of Microbiology and Virology, School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry, United Kingdom
| | - Lucy Kelly
- Department of Microbiology and Virology, School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry, United Kingdom
| | - Lucy Gannon
- Department of Genetics, University of Leicester, Leicester, United Kingdom
| | - George Muscatt
- Department of Microbiology and Virology, School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry, United Kingdom
| | - Rhys Dunstan
- Infection and Immunity Program, Department of Microbiology, Biomedicine Discovery Institute, Monash University, Melbourne, Australia
| | - Slawomir Michniewski
- Department of Microbiology and Virology, School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry, United Kingdom
| | - Hari Sapkota
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, United Kingdom
| | - Saija J. Kiljunen
- Department of Bacteriology and Immunology, Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Division of Clinical Microbiology, Helsinki University Hospital, HUSLAB, Helsinki, Finland
| | - Anna Kolsi
- Department of Bacteriology and Immunology, Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Mikael Skurnik
- Department of Bacteriology and Immunology, Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Division of Clinical Microbiology, Helsinki University Hospital, HUSLAB, Helsinki, Finland
| | - Trevor Lithgow
- Infection and Immunity Program, Department of Microbiology, Biomedicine Discovery Institute, Monash University, Melbourne, Australia
| | - Andrew D. Millard
- Department of Genetics, University of Leicester, Leicester, United Kingdom
| | - Eleanor Jameson
- Department of Microbiology and Virology, School of Life Sciences, Gibbet Hill Campus, The University of Warwick, Coventry, United Kingdom
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