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Selcuk E, Dokuz S, Ozbek T. Evaluating the Stability of Lytic and Lysogenic Bacteriophages in Various Protectants. J Pharm Sci 2024; 113:1488-1497. [PMID: 38280723 DOI: 10.1016/j.xphs.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/18/2024] [Accepted: 01/18/2024] [Indexed: 01/29/2024]
Abstract
Phage therapy has regained value as a potential alternative and a complementary anti-infective approach to antibiotics in the fight against bacterial pathogens. Due to their host specificity, non-pathogenic nature for humans, and low production cost, phages offer an effective opportunity for utilization in healthcare, agriculture, and food preservation. Well-defined storage conditions are essential for commercialization and dissemination of phage usage. For this purpose, in our study, after the isolation and characterization of two different phages, one lytic and the other lysogenic; storage and shelf-life studies of phages were evaluated in a presence of various protectants (glycerol, sodium azide, DMSO with chloroform) and without any protectant during 8-month period at four different temperatures. The short-time stability of the lytic P. syringae phage and lysogenic MRSA phage, which were determined by STEM analysis to belong to the Straboviridae and Siphoviridae families, respectively were also examined for the different temperatures and the pH levels ranging from 1.0 to 14.0. This study revealed the storage-model of phages that exhibit distinct lifecycles, for the first time and provided a theoretical basis for development and application of phages, has yielded valuable findings contributing to understanding of phage biology.
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Affiliation(s)
- Emine Selcuk
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Senanur Dokuz
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Yildiz Technical University, Istanbul, Turkey
| | - Tulin Ozbek
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Yildiz Technical University, Istanbul, Turkey.
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2
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Duarte J, Máximo C, Costa P, Oliveira V, Gomes NCM, Romalde JL, Pereira C, Almeida A. Potential of an Isolated Bacteriophage to Inactivate Klebsiella pneumoniae: Preliminary Studies to Control Urinary Tract Infections. Antibiotics (Basel) 2024; 13:195. [PMID: 38391581 PMCID: PMC10885952 DOI: 10.3390/antibiotics13020195] [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: 12/31/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
Urinary tract infections (UTIs) caused by resistant Klebsiella pneumoniae can lead to severe clinical complications and even death. An alternative treatment option for infected patients is using bacteriophages. In the present study, we isolated phage VB_KPM_KP1LMA (KP1LMA) from sewage water using a K. pneumoniae strain as a host. Whole-genome analysis indicated that the genome was a double-stranded linear 176,096-bp long DNA molecule with 41.8% GC content and did not contain virulence or antibiotic resistance genes. The inactivation potential of phage KP1LMA was assessed in broth at an MOI of 1 and 10, and a maximum inactivation of 4.9 and 5.4 log CFU/mL, respectively, was observed after 9 h. The efficacy at an MOI of 10 was also assessed in urine to evaluate the phage's performance in an acidic environment. A maximum inactivation of 3.8 log CFU/mL was observed after 9 h. The results suggest that phage KP1LMA could potentially control a UTI caused by this strain of K. pneumoniae, indicating that the same procedure can be used to control UTIs caused by other strains if new specific phages are isolated. Although phage KP1LMA has a narrow host range, in the future, efforts can be made to expand its spectrum of activity and also to combine this phage with others, potentially enabling its use against other K. pneumoniae strains involved in UTIs.
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Affiliation(s)
- João Duarte
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Carolina Máximo
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Pedro Costa
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Vanessa Oliveira
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Newton C M Gomes
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Jesús L Romalde
- Department of Microbiology and Parasitology, CRETUS & CIBUS, Faculty of Biology, University of Santiago de Compostela, CP 15782 Santiago de Compostela, Spain
| | - Carla Pereira
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Adelaide Almeida
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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3
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Martin MJ, Stribling W, Ong AC, Maybank R, Kwak YI, Rosado-Mendez JA, Preston LN, Lane KF, Julius M, Jones AR, Hinkle M, Waterman PE, Lesho EP, Lebreton F, Bennett JW, Mc Gann PT. A panel of diverse Klebsiella pneumoniae clinical isolates for research and development. Microb Genom 2023; 9. [PMID: 37141116 DOI: 10.1099/mgen.0.000967] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
Klebsiella pneumoniae are a leading cause of healthcare-associated infections worldwide. In particular, strains expressing extended-spectrum β-lactamases (ESBLs) and carbapenemases pose serious treatment challenges, leading the World Health Organization (WHO) to designate ESBL and carbapenem-resistant Enterobacteriaceae as 'critical' threats to human health. Research efforts to combat these pathogens can be supported by accessibility to diverse and clinically relevant isolates for testing novel therapeutics. Here, we describe a panel of 100 diverse K. pneumoniae isolates that are publicly available to assist the research community in this endeavour. Whole-genome sequencing (WGS) was performed on 3878 K. pneumoniae clinical isolates housed at the Multidrug-Resistant Organism Repository and Surveillance Network. The isolates were cultured from 63 facilities in 19 countries between 2001 and 2020. Core-genome multilocus sequence typing and high-resolution single-nucleotide polymorphism-based phylogenetic analyses captured the genetic diversity of the collection and were used to select the final panel of 100 isolates. In addition to known multidrug-resistant (MDR) pandemic lineages, the final panel includes hypervirulent lineages and isolates with specific and diverse resistance genes and virulence biomarkers. A broad range of antibiotic susceptibilities, ranging from pan-sensitive to extensively drug-resistant isolates, are described. The panel collection, and all associated metadata and genome sequences, are available at no additional cost and will be an important resource for the research community and for the design and development of novel antimicrobial agents and diagnostics against this important pathogen.
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Affiliation(s)
- Melissa J Martin
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - William Stribling
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Ana C Ong
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Rosslyn Maybank
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Yoon I Kwak
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Joshua A Rosado-Mendez
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Lan N Preston
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Katharine F Lane
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Michael Julius
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Anthony R Jones
- Department of Virology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Mary Hinkle
- Infectious Diseases Unit, Rochester General Hospital, Rochester, New York, USA
| | - Paige E Waterman
- Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Emil P Lesho
- Infectious Diseases Unit, Rochester General Hospital, Rochester, New York, USA
| | - Francois Lebreton
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Jason W Bennett
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Patrick T Mc Gann
- Multidrug-Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
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4
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Zhang K, Wang S, Yao D, Zhang X, Zhang Q, Liu W, Li Y, Yin Y, An S, Zhang R, Zhang Z. Aerobic and facultative anaerobic Klebsiella pneumoniae strains establish mutual competition and jointly promote Musca domestica development. Front Immunol 2023; 14:1102065. [PMID: 36875080 PMCID: PMC9982019 DOI: 10.3389/fimmu.2023.1102065] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 02/06/2023] [Indexed: 02/19/2023] Open
Abstract
Introduction The gut microenvironment in housefly harbors a rich and diverse microbial community which plays a crucial role in larval development. However, little is known about the impact of specific symbiotic bacteria on larval development as well as the composition of the indigenous gut microbiota of housefly. Methods In the present study, two novel strains were isolated from housefly larval gut, i.e., Klebsiella pneumoniae KX (aerobe) and K. pneumoniae KY (facultative anaerobe). Moreover, the bacteriophages KXP/KYP specific for strains KX and KY were used to analyse the effects of K. pneumoniae on larval development. Results Our results showed that dietary supplementation with K. pneumoniae KX and KY individually promoted housefly larval growth. However, no significant synergistic effect was observed when the two bacterial strains were administered in combination. In addition, using high-throughput sequencing, it was demonstrated that the abundance of Klebsiella increased whereas that of Provincia, Serratia and Morganella decreased when housefly larvae received supplementation with K. pneumoniae KX, KY or the KX-KY mixture. Moreover, when used combined, K. pneumoniae KX/KY inhibited the growth of Pseudomonas and Providencia. When the abundance of both bacterial strains simultaneously increased, a balance in total bacterial abundance was reached. Discussion Thus, it can be assumed that strains K. pneumoniae KX and KY maintain an equilibrium to facilitate their development in housefly gut, by establishing competition but also cooperation with each other to maintain the constant composition of gut bacteria in housefly larvae. Thus, our findings highlight the essential role of K. pneumoniae in regulating the composition of the gut microbiota in insects.
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Affiliation(s)
- Kexin Zhang
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Shumin Wang
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,School of Life Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Dawei Yao
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Shandong Institute of Endocrine and Metabolic Diseases, Shandong First Medical University, Jinan, Shandong, China
| | - Xinyu Zhang
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Qian Zhang
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Wenjuan Liu
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Ying Li
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Yansong Yin
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Sha An
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Ruiling Zhang
- School of Basic Medical Science, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Zhong Zhang
- School of life Science, Weifang Medical University, Weifang, Shandong, China.,Medical Science and Technology Innovation Center, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, China
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5
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Cieślik M, Harhala M, Orwat F, Dąbrowska K, Górski A, Jończyk-Matysiak E. Two Newly Isolated Enterobacter-Specific Bacteriophages: Biological Properties and Stability Studies. Viruses 2022; 14:1518. [PMID: 35891499 PMCID: PMC9319786 DOI: 10.3390/v14071518] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022] Open
Abstract
In an era of antibiotic therapy crisis caused by spreading antimicrobial resistance, and when recurrent urinary tract infections constitute a serious social and medical problem, the isolation and complex characterization of phages with a potential therapeutic application represents a promising solution. It is an inevitable, and even a necessary direction in the development of current phage research. In this paper, we present two newly isolated myoviruses that show lytic activity against multidrug-resistant clinical isolates of Enterobacter spp. (E. cloacae, E. hormaechei, and E. kobei), the genomes of which belong to a poorly represented phage group. Both phages were classified as part of the Tevenvirinae subfamily (Entb_43 was recognized as Karamvirus and Entb_45 as Kanagawavirus). Phage lytic spectra ranging from 40 to 60% were obtained. The most effective phage-to-bacteria ratios (MOI = 0.01 and MOI = 0.001) for both the phage amplification and their lytic activity against planktonic bacteria were also estimated. Complete adsorption to host cells were obtained after about 20 min for Entb_43 and 10 min for Entb_45. The phage lysates retained their initial titers even during six months of storage at both -70 °C and 4 °C, whereas storage at 37 °C caused a complete loss in their activity. We showed that phages retained their activity after incubation with solutions of silver and copper nanoparticles, which may indicate possible synergistic antibacterial activity. Moreover, a significant reduction in phage titers was observed after incubation with a disinfectant containing octenidinum dihydrochloridum and phenoxyethanol, as well as with 70% ethanol. The observed maintenance of phage activity during incubation in a urine sample, along with other described properties, may suggest a therapeutic potential of phages at the infection site after intravesical administration.
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Affiliation(s)
- Martyna Cieślik
- Bacteriophage Laboratory, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (F.O.); (A.G.)
| | - Marek Harhala
- Laboratory of Phage Molecular Biology, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.H.); (K.D.)
| | - Filip Orwat
- Bacteriophage Laboratory, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (F.O.); (A.G.)
| | - Krystyna Dąbrowska
- Laboratory of Phage Molecular Biology, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.H.); (K.D.)
| | - Andrzej Górski
- Bacteriophage Laboratory, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (F.O.); (A.G.)
- Phage Therapy Unit, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland
- Department of Clinical Immunology, Infant Jesus Hospital, The Medical University of Warsaw, 02-006 Warsaw, Poland
| | - Ewa Jończyk-Matysiak
- Bacteriophage Laboratory, Department of Phage Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wrocław, Poland; (M.C.); (F.O.); (A.G.)
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