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Temsaah HR, Azmy AF, Ahmed AE, Elshebrawy HA, Kasem NG, El-Gohary FA, Lood C, Lavigne R, Abdelkader K. Characterization and genomic analysis of the lytic bacteriophage vB_EclM_HK6 as a potential approach to biocontrol the spread of Enterobacter cloacae contaminating food. BMC Microbiol 2024; 24:408. [PMID: 39402521 PMCID: PMC11477059 DOI: 10.1186/s12866-024-03541-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Accepted: 09/23/2024] [Indexed: 10/19/2024] Open
Abstract
BACKGROUND Increased prevalence of Enterobacter cloacae within food products underscores food as an underexplored reservoir for antibiotic resistance, thus requiring particular intervention. Bacteriophages have been explored as a promising approach for controlling bacterial growth in different matrices. Moreover, their specific interaction and self-replication, put them apart from traditional methods for controlling bacteria in different matrices. METHODS Sixteen Enterobacter cloacae strains were recovered from raw chicken. These strains were used to isolate bacteriophages using enrichment protocol. The broad-spectrum bacteriophage was evaluated in terms of thermal, pH, shearing stress and storge. Moreover, its infection kinetics, in vitro antibacterial activity, cytotoxicity were also assessed. Genomic sequencing was performed to exclude any potential virulence or resistance genes. Finally, the capability of the isolated phages to control bacterial growth in different chicken samples was assessed alone and in combination with sodium nitrite. RESULTS The lytic bacteriophage vB_EclM_HK6 was isolated and showed the broadest spectrum being able to infect 8/16 E. cloacae strains with a lytic activity against its host strain, E. cloacae EC21, as low as MOI of 10-6. The phage displays a latent period of 10 min and burst size of 115 ± 44 and resistance frequency of 5.7 × 10-4 ± 3.0 × 10-4. Stability assessment revealed a thermal tolerance up to 60 ˚C, wide range pH stability (3-10) and the ability to withstand shearing stress up to 250 rpm. HK6 shows no cytotoxicity against oral epithelial cells up to 1012 PFU/ml. Genomic analysis revealed a Strabovirus with total size of 177,845 bp that is free from known resistance and virulence genes. Finally, HK6 pretreatment of raw chicken, chicken nuggets and ready-made cheese salad shows a reduced bacterial count up to 4.6, 2.96 and 2.81 log-units, respectively. Moreover, combing HK6 with sodium nitrite further improved the antibacterial activity in both raw chicken and chicken nuggets without significant enhancement in case of cheese salad. CONCLUSION Enterobacter bacteriophage vB_EclM_HK6 presents a safe and effective approach for controlling E. cloacae contaminating stored chicken food samples. Moreover, they could be combined with a reduced concentrations of sodium nitrite to improve the killing capacity.
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Affiliation(s)
- Hasnaa R Temsaah
- Biotechnology and Life Sciences Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Ahmed F Azmy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Amr E Ahmed
- Biotechnology and Life Sciences Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Hend Ali Elshebrawy
- Department of Food Hygiene, Safety, and Technology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Nahed Gomaa Kasem
- Department of Food Hygiene, Safety, and Technology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Fatma A El-Gohary
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Cédric Lood
- Laboratory of Gene Technology, Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, Louvain, 3001, Belgium
- Department of Biology, University of Oxford, Oxford, OX1 3SZ, UK
| | - Rob Lavigne
- Laboratory of Gene Technology, Department of Biosystems, KU Leuven, Kasteelpark Arenberg 21, Louvain, 3001, Belgium
| | - Karim Abdelkader
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62511, Egypt.
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E S, Gummadi SN. Advances in the applications of Bacteriophages and phage products against food-contaminating bacteria. Crit Rev Microbiol 2024; 50:702-727. [PMID: 37861086 DOI: 10.1080/1040841x.2023.2271098] [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: 05/01/2023] [Revised: 07/21/2023] [Accepted: 09/17/2023] [Indexed: 10/21/2023]
Abstract
Food-contaminating bacteria pose a threat to food safety and the economy by causing foodborne illnesses and spoilage. Bacteriophages, a group of viruses that infect only bacteria, have the potential to control bacteria throughout the "farm-to-fork continuum". Phage application offers several advantages, including targeted action against specific bacterial strains and minimal impact on the natural microflora of food. This review covers multiple aspects of bacteriophages applications in the food industry, including their use as biocontrol and biopreservation agents to fight over 20 different genera of food-contaminating bacteria, reduce cross-contamination and the risk of foodborne diseases, and also to prolong shelf life and preserve freshness. The review also highlights the benefits of using bacteriophages in bioprocesses to selectively inhibit undesirable bacteria, such as substrate competitors and toxin producers, which is particularly valuable in complex microbial bioprocesses where physical or chemical methods become inadequate. Furthermore, the review briefly discusses other uses of bacteriophages in the food industry, such as sanitizing food processing environments and detecting specific bacteria in food products. The review also explores strategies to enhance the effectiveness of phages, such as employing multi-phage cocktails, encapsulated phages, phage products, and synergistic hurdle approaches by combining them with antimicrobials.
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Affiliation(s)
- Suja E
- Applied and Industrial Microbiology Laboratory (AIM Lab), Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Sathyanarayana N Gummadi
- Applied and Industrial Microbiology Laboratory (AIM Lab), Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
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3
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Imm S, Chang Y. Evaluation of the biocontrol potential of a collagen peptide/trehalose-based Cronobacter sakazakii phage powder in rehydrated powdered infant formula. Food Res Int 2023; 173:113257. [PMID: 37803569 DOI: 10.1016/j.foodres.2023.113257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 10/08/2023]
Abstract
Cronobacter sakazakii is a major foodborne pathogen that is mainly transmitted through powdered infant formula (PIF) and has a high mortality rate of up to 80%, particularly in fetuses and neonates. Bacteriophages have emerged as an effective biocontrol agent for antibiotic-resistant bacteria. In this study, lytic phage SG01 was newly characterized and loaded into collagen peptide/trehalose-based powders to develop an antibacterial agent against C. sakazakii contamination in PIF. The phage belongs to the Siphoviridae family, has an icosahedral head and a flexible tail, and showed rapid and persistent antibacterial activity up to 17 h. It was specifically active against C. sakazakii and also exhibited effective anti-biofilm properties. The phage was freeze-dried to a collagen peptide/trehalose-based powder and the phage was tested for viability, storage stability, and antibacterial activity. The optimal composition was 5% (w/v) collagen peptides and 1% (w/v) trehalose, which demonstrated the highest phage viability after freeze-drying. The phage remained stable in the collagen peptide/trehalose-based powder for up to four weeks at 4 °C and 25 °C, indicating that this is a desirable formulation for phage protection. Furthermore, the phage powder showed significant antibacterial efficacy in PIF, with a 4-log CFU/mL reduction within 6 h. Overall, the tested phage powder has the potential to be used as an antimicrobial agent in the food industry, particularly in powdered foods such as PIF.
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Affiliation(s)
- Seulgi Imm
- Department of Food and Nutrition, College of Science and Technology, Kookmin University, Seoul 02707, Republic of Korea.
| | - Yoonjee Chang
- Department of Food and Nutrition, College of Science and Technology, Kookmin University, Seoul 02707, Republic of Korea.
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4
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Zou G, Ndayishimiye L, Xin L, Cai M, Zhang L, Li J, Song Z, Wu R, Zhou Y, Shi Y, Ye Y, Zhou R, Li J. Application of a novel phage LPCS28 for biological control of Cronobacter sakazakii in milk and reconstituted powdered infant formula. Food Res Int 2023; 172:113214. [PMID: 37689848 DOI: 10.1016/j.foodres.2023.113214] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 09/11/2023]
Abstract
Contamination of infant formula with Cronobacter sakazakii (C. sakazakii) can cause fatal infections in neonates. Phages have emerged as promising antibacterial agents for food safety, but their effectiveness may be limited by thermal processing. In this study, we isolated 27 C. sakazakii phages from environmental water samples and selected LPCS28 due to its broad lysis spectrum. The titer of LPCS28 will not be significantly affected by heating at a temperature of 60 °C for one hour. In both reconstituted powdered infant formula (RPIF) and liquid milk, the pre-added LPCS28, after the thermal processing at 63 °C for 30 min, significantly inhibited the post-contaminated C. sakazakii (103 CFU/mL) and eventually reduced the number of C. sakazakii to below the limit of detection (<10 CFU/mL) within 9 h at 37 °C and significantly delayed the increase of bacterial concentration in the samples at 23 °C. The phylogenetic analysis revealed that LPCS28 belonged to a new genus, we proposed as Nanhuvirus, under the family Straboviridae. These findings suggest that phage LPCS28 is a promising biological control agent for pathogenic C. sakazakii in the dairy industry.
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Affiliation(s)
- Geng Zou
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Libère Ndayishimiye
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Lingxiang Xin
- China Institute of Veterinary Drug Control, Beijing 100086, China
| | - Manshan Cai
- Institute of Animal Science, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - Longjian Zhang
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Jie Li
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Zhiyong Song
- College of Science, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Renwei Wu
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yang Zhou
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yuanguo Shi
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518000, China
| | - Yingwang Ye
- School of Food Science and Bioengineering, Hefei University of Technology, Anhui, Hefei 230009, China
| | - Rui Zhou
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Jinquan Li
- National Key Laboratory of Agricultural Microbiology, Key Laboratory of Environment Correlative Dietology, College of Food Science and Technology, College of Biomedicine and Health, Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China; Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, NY 10065, USA.
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Kazantseva OA, Skorynina AV, Piligrimova EG, Ryabova NA, Shadrin AM. A Genomic Analysis of the Bacillus Bacteriophage Kirovirus kirovense Kirov and Its Ability to Preserve Milk. Int J Mol Sci 2023; 24:12584. [PMID: 37628765 PMCID: PMC10454425 DOI: 10.3390/ijms241612584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
Bacteriophages are widely recognized as alternatives to traditional antibiotics commonly used in the treatment of bacterial infection diseases and in the food industry, as phages offer a potential solution in combating multidrug-resistant bacterial pathogens. In this study, we describe a novel bacteriophage, Kirovirus kirovense Kirov, which infects members of the Bacillus cereus group. Kirovirus kirovense Kirov is a broad-host-range phage belonging to the Caudoviricetes class. Its chromosome is a linear 165,667 bp double-stranded DNA molecule that contains two short, direct terminal repeats, each 284 bp long. According to bioinformatics predictions, the genomic DNA contains 275 protein-coding genes and 5 tRNA genes. A comparative genomic analysis suggests that Kirovirus kirovense Kirov is a novel species within the Kirovirus genus, belonging to the Andregratiavirinae subfamily. Kirovirus kirovense Kirov demonstrates the ability to preserve and decontaminate B. cereus from cow milk when present in milk at a concentration of 104 PFU/mL. After 4 h of incubation with the phage, the bacterial titer drops from 105 to less than 102 CFU/mL.
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Affiliation(s)
- Olesya A. Kazantseva
- Laboratory of Bacteriophage Biology, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Federal Research Center, Prospect Nauki, 5, 142290 Pushchino, Russia; (A.V.S.); (E.G.P.); (N.A.R.)
| | - Anna V. Skorynina
- Laboratory of Bacteriophage Biology, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Federal Research Center, Prospect Nauki, 5, 142290 Pushchino, Russia; (A.V.S.); (E.G.P.); (N.A.R.)
| | - Emma G. Piligrimova
- Laboratory of Bacteriophage Biology, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Federal Research Center, Prospect Nauki, 5, 142290 Pushchino, Russia; (A.V.S.); (E.G.P.); (N.A.R.)
| | - Natalya A. Ryabova
- Laboratory of Bacteriophage Biology, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Federal Research Center, Prospect Nauki, 5, 142290 Pushchino, Russia; (A.V.S.); (E.G.P.); (N.A.R.)
- Institute of Protein Research RAS, Institutskaya St., 4, 142290 Pushchino, Russia
| | - Andrey M. Shadrin
- Laboratory of Bacteriophage Biology, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, Federal Research Center, Prospect Nauki, 5, 142290 Pushchino, Russia; (A.V.S.); (E.G.P.); (N.A.R.)
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Baláž A, Kajsik M, Budiš J, Szemes T, Turňa J. PHERI-Phage Host ExploRation Pipeline. Microorganisms 2023; 11:1398. [PMID: 37374901 DOI: 10.3390/microorganisms11061398] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
Antibiotic resistance is becoming a common problem in medicine, food, and industry, with multidrug-resistant bacterial strains occurring in all regions. One of the possible future solutions is the use of bacteriophages. Phages are the most abundant form of life in the biosphere, so we can highly likely purify a specific phage against each target bacterium. The identification and consistent characterization of individual phages was a common form of phage work and included determining bacteriophages' host-specificity. With the advent of new modern sequencing methods, there was a problem with the detailed characterization of phages in the environment identified by metagenome analysis. The solution to this problem may be to use a bioinformatic approach in the form of prediction software capable of determining a bacterial host based on the phage whole-genome sequence. The result of our research is the machine learning algorithm-based tool called PHERI. PHERI predicts the suitable bacterial host genus for the purification of individual viruses from different samples. In addition, it can identify and highlight protein sequences that are important for host selection.
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Affiliation(s)
- Andrej Baláž
- Geneton Ltd., Ilkovicova 8, 841 04 Bratislava, Slovakia
- Department of Applied Informatics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 842 48 Bratislava, Slovakia
| | - Michal Kajsik
- Science Park, Comenius University, Ilkovicova 8, 841 04 Bratislava, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 841 04 Bratislava, Slovakia
- Medirex Group Academy n.o., Novozamocka 1, 949 05 Nitra, Slovakia
| | - Jaroslav Budiš
- Geneton Ltd., Ilkovicova 8, 841 04 Bratislava, Slovakia
- Science Park, Comenius University, Ilkovicova 8, 841 04 Bratislava, Slovakia
- Slovak Centre of Scientific and Technical Information (SCSTI), Lamacska Cesta 8/A, 811 04 Bratislava, Slovakia
| | - Tomáš Szemes
- Geneton Ltd., Ilkovicova 8, 841 04 Bratislava, Slovakia
- Science Park, Comenius University, Ilkovicova 8, 841 04 Bratislava, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 841 04 Bratislava, Slovakia
| | - Ján Turňa
- Science Park, Comenius University, Ilkovicova 8, 841 04 Bratislava, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 841 04 Bratislava, Slovakia
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7
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Phage Therapy in Germany-Update 2023. Viruses 2023; 15:v15020588. [PMID: 36851802 PMCID: PMC9960545 DOI: 10.3390/v15020588] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/03/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Bacteriophage therapy holds promise in addressing the antibiotic-resistance crisis, globally and in Germany. Here, we provide an overview of the current situation (2023) of applied phage therapy and supporting research in Germany. The authors, an interdisciplinary group working on patient-focused bacteriophage research, addressed phage production, phage banks, susceptibility testing, clinical application, ongoing translational research, the regulatory situation, and the network structure in Germany. They identified critical shortcomings including the lack of clinical trials, a paucity of appropriate regulation and a shortage of phages for clinical use. Phage therapy is currently being applied to a limited number of patients as individual treatment trials. There is presently only one site in Germany for large-scale good-manufacturing-practice (GMP) phage production, and one clinic carrying out permission-free production of medicinal products. Several phage banks exist, but due to varying institutional policies, exchange among them is limited. The number of phage research projects has remarkably increased in recent years, some of which are part of structured networks. There is a demand for the expansion of production capacities with defined quality standards, a structured registry of all treated patients and clear therapeutic guidelines. Furthermore, the medical field is still poorly informed about phage therapy. The current status of non-approval, however, may also be regarded as advantageous, as insufficiently restricted use of phage therapy without adequate scientific evidence for effectiveness and safety must be prevented. In close coordination with the regulatory authorities, it seems sensible to first allow some centers to treat patients following the Belgian model. There is an urgent need for targeted networking and funding, particularly of translational research, to help advance the clinical application of phages.
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Andrezal M, Oravcova L, Kadličekova V, Ozaee E, Elnwrani S, Bugala J, Markuskova B, Kajsik M, Drahovska H. Characterization and the host specificity of Pet-CM3-4, a new phage infecting Cronobacter and Enterobacter strains. Virus Res 2023; 324:199025. [PMID: 36528171 DOI: 10.1016/j.virusres.2022.199025] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Bacteria belonging to Cronobacter and Enterobacter genera are opportunistic pathogens responsible for infections in immunocompromised patients including neonates. Phage therapy offers a safe method for pathogen elimination, however, phages must be well characterized before application. In the present study we isolated four closely related bacteriophages from the subfamily Tevenvirinae infecting Cronobacter and Enterobacter strains. Bacteriophage Pet-CM3-4 which was isolated on C. malonaticus strain possessed broader host specificity than other three phages with primary Enterobacter hosts. Based on genome sequences all these phages have been assigned to the genus Karamvirus. We also studied factors influencing the host specificity of Pet-CM3-4 phage and its host range mutant Pet-CM3-1 and observed that a lysine to glutamine substitution in the long tail fiber adhesin was the reason of the Pet-CM3-1 reduced host specificity. By characterization of phage-resistant mutants from transposon library of C. malonaticus KMB-72 strain we identified that LPS is the receptor of both phages. C. malonaticus O:3 antigen is the receptor of Pet-CM3-1 phage and the Pet-CM3-4 phage binds to structures of the LPS core region. Obtained results will contribute to our understanding of biology and evolution of Tevenvirinae phages.
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Affiliation(s)
- Michal Andrezal
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia
| | - Lucia Oravcova
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia
| | - Veronika Kadličekova
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia
| | - Elham Ozaee
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia
| | - Sulafa Elnwrani
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia
| | - Juraj Bugala
- Comenius University Science Park, Ilkovičova 8, 84104 Bratislava, Slovakia
| | - Barbora Markuskova
- Comenius University Science Park, Ilkovičova 8, 84104 Bratislava, Slovakia
| | - Michal Kajsik
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia; Comenius University Science Park, Ilkovičova 8, 84104 Bratislava, Slovakia; Medirex group academy n.o., Novozámocká 1/67, 949 05 Nitra, Slovakia
| | - Hana Drahovska
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84104 Bratislava, Slovakia; Comenius University Science Park, Ilkovičova 8, 84104 Bratislava, Slovakia.
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Jiang J, Lan G, Li J, Yu J, Huang H, Sun Y, Xu C, Liu D, Gong Y, Zhao C. Characterization and genomic analysis of JC01, a novel bacteriophage infecting Cronobacter sakazakii. Arch Virol 2023; 168:1. [PMID: 36527491 PMCID: PMC9759504 DOI: 10.1007/s00705-022-05663-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/24/2022] [Indexed: 12/23/2022]
Abstract
The lytic bacteriophage JC01 was isolated using a strain of Cronobacter sakazakii previously isolated from powdered infant formula (PIF). The complete genome sequence of phage JC01 was determined. The double-stranded DNA genome of phage JC01 is composed of 61,736 bp with a G + C content of 58.9%, and it contains 76 putative open reading frames (ORFs) without any tRNA genes. The predicted ORFs were classified into functional groups, including DNA manipulation, transcription, phage packaging, phage structure, host lysis, and hypothetical proteins. Based on overall nucleotide sequence comparisons, calculation of phage intergenomic similarities, and phylogenetic analysis, JC01 appears to be a novel bacteriophage infecting C. sakazakii.
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Affiliation(s)
- Jie Jiang
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Guanda Lan
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Jinghua Li
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Jun Yu
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Honglan Huang
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Yanbo Sun
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Cuiting Xu
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Dandan Liu
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
| | - Yunwei Gong
- Changchun Center for Diseases Control and Prevention, Changchun, People’s Republic of China
| | - Chunyan Zhao
- grid.64924.3d0000 0004 1760 5735Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, 130021 Changchun, Jilin People’s Republic of China
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Ling N, Zhang X, Forsythe S, Zhang D, Shen Y, Zhang J, Ding Y, Wang J, Wu Q, Ye Y. Bacteroides fragilis ameliorates Cronobacter malonaticus lipopolysaccharide-induced pathological injury through modulation of the intestinal microbiota. Front Immunol 2022; 13:931871. [PMID: 36211338 PMCID: PMC9536467 DOI: 10.3389/fimmu.2022.931871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/08/2022] [Indexed: 11/23/2022] Open
Abstract
Cronobacter has attracted considerable attention due to its association with meningitis and necrotizing enterocolitis (NEC) in newborns. Generally, lipopolysaccharide (LPS) facilitates bacterial translocation along with inflammatory responses as an endotoxin; however, the pathogenicity of Cronobacter LPS and the strategies to alleviate the toxicity were largely unknown. In this study, inflammatory responses were stimulated by intraperitoneal injection of Cronobacter malonaticus LPS into Sprague–Dawley young rats. Simultaneously, Bacteroides fragilis NCTC9343 were continuously fed through gavage for 5 days before or after injection of C. malonaticus LPS to evaluate the intervention effect of B. fragilis. We first checked the morphological changes of the ileum and colon and the intestinal microbiota and then detected the generation of inflammatory factors, including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), and interleukin-10 (IL-10) and the expression of Toll-like receptor 4 (TLR4), occludin, claudin-4, and iNOs. The results indicated that C. malonaticus LPS exacerbated intestinal infection by altering gut microbe profile, tight junction protein expression, and releasing inflammatory factors in a time- and dose-dependent manner. Intriguingly, treatment with B. fragilis obviously diminished the pathological injuries and expression of TLR4 caused by C. malonaticus LPS while increasing gut microbes like Prevotella-9. We note that Shigella, Peptoclostridium, and Sutterella might be positively related to C. malonaticus LPS infection, but Prevotella-9 was negatively correlated. The results suggested that the intestinal microbiota is an important target for the prevention and treatment of pathogenic injuries induced by C. malonaticus LPS.
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Affiliation(s)
- Na Ling
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiyan Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | | | - Danfeng Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Yizhong Shen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Yu Ding
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Juan Wang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- *Correspondence: Yingwang Ye, ; Qingping Wu,
| | - Yingwang Ye
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
- *Correspondence: Yingwang Ye, ; Qingping Wu,
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11
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Characterization of the Novel Phage vB_VpaP_FE11 and Its Potential Role in Controlling Vibrio parahaemolyticus Biofilms. Viruses 2022; 14:v14020264. [PMID: 35215857 PMCID: PMC8879856 DOI: 10.3390/v14020264] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/16/2022] [Accepted: 01/27/2022] [Indexed: 12/13/2022] Open
Abstract
Vibrio parahaemolyticus causes aquatic vibriosis. Its biofilm protects it from antibiotics; therefore, a new different method is needed to control V. parahaemolyticus for food safety. Phage therapy represents an alternative strategy to control biofilms. In this study, the lytic Vibrio phage vB_VpaP_FE11 (FE11) was isolated from the sewers of Guangzhou Huangsha Aquatic Market. Electron microscopy analysis revealed that FE11 has a typical podovirus morphology. Its optimal stability temperature and pH range were found to be 20–50 °C and 5–10 °C, respectively. It was completely inactivated following ultraviolet irradiation for 20 min. Its latent period is 10 min and burst size is 37 plaque forming units/cell. Its double-stranded DNA genome is 43,397 bp long, with a G + C content of 49.24% and 50 predicted protein-coding genes. As a lytic phage, FE11 not only prevented the formation of biofilms but also could destroy the formed biofilms effectively. Overall, phage vB_VpaP_FE11 is a potential biological control agent against V. parahaemolyticus and the biofilm it produces.
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12
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Wang L, Pang X, Zhao J, Jin H, Yang X, Fu S, Cheng S, Li H, Miao C, Man C, Jiang Y. Isolation and characteristics of new phage JK004 and application to control Cronobacter sakazakii on material surfaces and powdered infant formula. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Genome sequence analysis of Cronobacter phage PF-CE2 and proposal of a new species in the genus Pseudotevenvirus. Arch Virol 2021; 166:3467-3472. [PMID: 34601635 DOI: 10.1007/s00705-021-05255-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
The genome of a Cronobacter sakazakii M1 phage named PF-CE2 was characterized in this work, and a new species named "Cronobacter virus PF-CE2", in the genus Pseudotevenvirus of the subfamily Tevenvirinae of the family Myoviridae is proposed. The Gp190 gene of phage PF-CE2 is predicted to encode a bacteriophage-borne glycanase that is capable of degrading fucose-containing exopolysaccharides produced by C. sakazakii M1. Furthermore, we propose changing the taxonomic status of eight additional phages based on nucleotide sequence comparisons. This work provides a theoretical basis for subsequent heterologous expression of the phage PF-CE2 glycanase and provides an important reference for the preservation and sharing of these phages.
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14
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Li B, Feng D, Miao Y, Liang X, Gu L, Lan H, Gao S, Zhang Y, Deng Y, Geng L. The systemic characterization of aptamer cocktail for bacterial detection studied by graphene oxide-based fluorescence resonance energy transfer aptasensor. J Mol Recognit 2021; 34:e2934. [PMID: 34553439 DOI: 10.1002/jmr.2934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 08/12/2021] [Indexed: 12/15/2022]
Abstract
Aptamers have gained significant attention as the molecular recognition element to replace antibodies in sensor development and target delivery. Nevertheless, it is noteworthy that unlike the wide application of polyvalent antibodies, existing researches on the combined use of heterologous aptamers with similar recognition affinity and specificity for target detection were sporadic. Herein, first, the wide existence of polyaptamer for bacteria was revealed through the summary of existing literature. Furthermore, based on the establishment of a sensitive aptamer cocktail/graphene oxide fluorescence resonance energy transfer polyaptasensor with a detection limit as low as 10 CFU/ml, the systemic characterization of aptamer cocktails in bacterial detection was carried out by taking E. coli, Vi. parahemolyticus, S. typhimurium, and C. sakazakii as the assay targets. It was turned out that the polyaptasensors for C. sakazakii and S. typhimurium owned prevalence in the broader concentration range of target bacteria. While the polyaptasensors for E. coli and V. parahemolyticus outperformed monoaptasensor mainly in the lower concentration of target bacteria. The linear relationships between fluorescence recovery and the concentration of bacteria were also discussed. The different characteristics of the bacterial cellular membrane, including the binding affinity and the robustness to variation, are analyzed to be the main reason for the diverse detection performance of aptasensors. The study here enhances a sensor detection strategy with super sensitivity. More importantly, this systemic study on the aptamer cocktail in reference to antibodies will advance the in-depth understanding and rational design of aptamer based biological recognition, detection, and targeting.
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Affiliation(s)
- Baichang Li
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Dongwei Feng
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Yunfei Miao
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Xuewang Liang
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Le Gu
- Biological Detection Department, BOE Technology Group Co., Ltd., Beijing, China
| | - Hongying Lan
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Shimeng Gao
- College of Agriculture and Life Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Yaxi Zhang
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Yulin Deng
- Department of Life, Beijing Institute of Technology, Beijing, China
| | - Lina Geng
- Department of Life, Beijing Institute of Technology, Beijing, China
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15
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Fournier E, Roussel C, Dominicis A, Ley D, Peyron MA, Collado V, Mercier-Bonin M, Lacroix C, Alric M, Van de Wiele T, Chassard C, Etienne-Mesmin L, Blanquet-Diot S. In vitro models of gut digestion across childhood: current developments, challenges and future trends. Biotechnol Adv 2021; 54:107796. [PMID: 34252564 DOI: 10.1016/j.biotechadv.2021.107796] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 02/08/2023]
Abstract
The human digestion is a multi-step and multi-compartment process essential for human health, at the heart of many issues raised by academics, the medical world and industrials from the food, nutrition and pharma fields. In the first years of life, major dietary changes occur and are concomitant with an evolution of the whole child digestive tract anatomy and physiology, including colonization of gut microbiota. All these phenomena are influenced by child exposure to environmental compounds, such as drugs (especially antibiotics) and food pollutants, but also childhood infections. Due to obvious ethical, regulatory and technical limitations, in vivo approaches in animal and human are more and more restricted to favor complementary in vitro approaches. This review summarizes current knowledge on the evolution of child gut physiology from birth to 3 years old regarding physicochemical, mechanical and microbial parameters. Then, all the available in vitro models of the child digestive tract are described, ranging from the simplest static mono-compartmental systems to the most sophisticated dynamic and multi-compartmental models, and mimicking from the oral phase to the colon compartment. Lastly, we detail the main applications of child gut models in nutritional, pharmaceutical and microbiological studies and discuss the limitations and challenges facing this field of research.
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Affiliation(s)
- Elora Fournier
- Université Clermont Auvergne, INRAE, UMR 454 MEDIS, Microbiologie Environnement Digestif et Santé, CRNH Auvergne, 63000 Clermont-Ferrand, France; Toxalim, Research Centre in Food Toxicology, INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 31000 Toulouse, France
| | - Charlène Roussel
- Laval University, INAF Institute of Nutrition and Functional Foods, G1V 0A6 Quebec, Canada
| | - Alessandra Dominicis
- European Reference Laboratory for E. coli, Istituto Superiore di Sanità, Rome, Italy
| | - Delphine Ley
- Université Lille 2, Faculté de Médecine, Inserm U995 Nutritional Modulation of Infection and Inflammation, 59045 Lille, France
| | - Marie-Agnès Peyron
- Université Clermont Auvergne, INRAE, UNH, Unité de Nutrition Humaine, CRNH Auvergne, 63000 Clermont-Ferrand, France
| | - Valérie Collado
- Université Clermont Auvergne, EA 4847, CROC, Centre de Recherche en Odontologie Clinique, 63000 Clermont-Ferrand, France
| | - Muriel Mercier-Bonin
- Toxalim, Research Centre in Food Toxicology, INRAE, ENVT, INP-Purpan, UPS, Université de Toulouse, 31000 Toulouse, France
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zürich, Switzerland
| | - Monique Alric
- Université Clermont Auvergne, INRAE, UMR 454 MEDIS, Microbiologie Environnement Digestif et Santé, CRNH Auvergne, 63000 Clermont-Ferrand, France
| | - Tom Van de Wiele
- Ghent University, Center for Microbial Ecology and Technology (CMET), Coupure Links 653, 9000 Ghent, Belgium
| | - Christophe Chassard
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMRF, 15000 Aurillac, France
| | - Lucie Etienne-Mesmin
- Université Clermont Auvergne, INRAE, UMR 454 MEDIS, Microbiologie Environnement Digestif et Santé, CRNH Auvergne, 63000 Clermont-Ferrand, France
| | - Stéphanie Blanquet-Diot
- Université Clermont Auvergne, INRAE, UMR 454 MEDIS, Microbiologie Environnement Digestif et Santé, CRNH Auvergne, 63000 Clermont-Ferrand, France.
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16
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Abstract
Bacteriophages and bacterial biofilms are widely present in natural environments, a fact that has accelerated the evolution of phages and their bacterial hosts in these particular niches. Phage-host interactions in biofilm communities are rather complex, where phages are not always merely predators but also can establish symbiotic relationships that induce and strengthen biofilms. In this review we provide an overview of the main features affecting phage-biofilm interactions as well as the currently available methods of studying these interactions. In addition, we address the applications of phages for biofilm control in different contexts.
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Affiliation(s)
- Diana P Pires
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;
| | - Luís D R Melo
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;
| | - Joana Azeredo
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;
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17
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Zeng H, Li C, Luo D, Zhang J, Ding Y, Chen M, Yang X, Lei T, Wu S, Ye Q, Pang R, Gu Q, Wu Q. Novel phage vB_CtuP_B1 for controlling Cronobacter malonaticus and Cronobacter turicensis in ready-to-eat lettuce and powered infant formula. Food Res Int 2021; 143:110255. [PMID: 33992361 DOI: 10.1016/j.foodres.2021.110255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/25/2021] [Accepted: 02/17/2021] [Indexed: 01/27/2023]
Abstract
Cronobacter spp. are important foodborne pathogens that are a threat to people of all ages, but especially neonates and infants. Bacteriophages are biological agents that are potentially useful for the control of foodborne pathogens. However, there has been little research on the control of C. malonaticus and C. turicensis using bacteriophages. In the present study, a novel lytic phage vB_CtuP_B1 (hereafter referred to as B1)-which can simultaneously lyse C. malonaticus and C. turicensis- was isolated from river water in Guangzhou, China, and was used in the control of Cronobacter contaminated food. The phage has a short tail, and has been identified as a new species of Kayfunavirus based on genomic and phylogenetic analyses. One-step growth and stability assays revealed that phage B1 has a very short latent period (<5 min) and a large burst size (4006 pfu/cell), and is highly stable between 25 and 60 °C and between pH 5 and 11. Its genome encodes two lytic proteins, but does not contain any genes responsible for antibiotic resistance and virulence factors. In broth, the phage B1 completely inhibited the growth of C. malonaticus cro2475W and C. turicensis cro1541A1-1 for up to 6 h. On lettuce, phage B1 reduced the viable count of C. turicensis cro1541A1-1 to below the detection limit for bacteria on lettuce (<10 cfu/mL) after 6 h at 4 °C and 2 h at 25 °C, and also significantly reduced the viable count of C. malonaticus cro2475W at those temperatures. In powdered infant formula, the viable counts of both the phage-treated bacterial hosts were significantly reduced after 2 h of storage at 4 °C or 37 °C. Furthermore, phage B1 reduced the viable count of C. turicensis cro1541A1-1 to below the detection limit (<10 cfu/mL) from 4 h to 24 h at 37 °C. It significantly inhibited the growth of C. turicensis cro1541A1-1 than that of C. malonaticus cro2475W (P < 0.05). In conclusion, phage B1 with high stability and strong lytic ability is potentially useful for controlling C. malonaticus and C. turicensis.
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Affiliation(s)
- Haiyan Zeng
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Chengsi Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Dandan Luo
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Yu Ding
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Moutong Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Xiaojuan Yang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Tao Lei
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Shi Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Qinghua Ye
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Rui Pang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Qihui Gu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
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18
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Luo D, Li C, Wu Q, Ding Y, Yang M, Hu Y, Zeng H, Zhang J. Isolation and characterization of new phage vB_CtuP_A24 and application to control Cronobacter spp. in infant milk formula and lettuce. Food Res Int 2021; 141:110109. [PMID: 33641976 DOI: 10.1016/j.foodres.2021.110109] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/30/2020] [Accepted: 01/02/2021] [Indexed: 12/17/2022]
Abstract
Cronobacter spp. are opportunistic pathogenic bacteria that cause severe diseases in neonates and infants. Bacteriophages are novel antibacterial agents with a potential to control this pathogen. In the current study, a novel lytic Cronobacter phage, vB_CtuP_A24, was isolated from a river in Guangzhou, China. The phage was characterized by a short, non-contractile tail and a long head and identified as a new member of the family Podoviridae. Complete genome sequence analysis of this phage indicated that its genome contained 75,106 bp of DNA, an average GC content of 44.05%, and 108 predicted open reading frames (ORFs). The annotated ORFs were associated with phage structure, packaging, host lysis, DNA manipulation, transcription, and additional functions. Genes responsible for antibiotic resistance, virulence, and toxic effects were not present. Cronobacter phage vB_CtuP_A24 is a novel lytic phage that can lyse five Cronobacter spp. It was stable over a wide range of temperatures (25-60 °C) and pH values (pH 4-11) and displayed a short latent period (approximately 10 min) and a large burst size (500 plaque-forming units (PFUs)/cell). In Luria-Bertani (LB) broth, phage A24 effectively inhibited the growth of C. dublinensis cro280B, C. sakazakii 465G, and C. malonaticus cro695W up to 9, 10, and 12 h, respectively, while in infant milk formulas, it inhibited two strains, C. sakazakii 465G and C. malonaticus cro695W, up to 24 h at 37 °C, with maximum reduction levels of approximately 5.12 ± 3.95 and 7.38 ± 3.03 log10 colony-forming unit (CFU)/mL, respectively. In lettuce, the reduction of all three strains was highly significant at 25 °C. However, the growth of C. dublinensis cro280B and C. sakazakii 465G were not significantly inhibited at 4 °C. In conclusion, Cronobacter spp. phage vB_CtuP_A24, which has lytic ability against five Cronobacter species, stability under different environments, and shows potential as a promising biocontrol agent against Cronobacter spp. in food production.
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Affiliation(s)
- Dandan Luo
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, China; Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong Province, China
| | - Chengsi Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong Province, China
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong Province, China
| | - Yu Ding
- Department of Food Science &Technology, Jinan University, Guangzhou, China
| | - Meiyan Yang
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Yongdan Hu
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, Yunnan Province, China.
| | - Haiyan Zeng
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong Province, China.
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, Guangdong Province, China.
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19
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Chen CW, Yuan L, Zhou WY, Mgomi FC, Zhang YS, Wang Y, Zheng XF, Hu Q, Gao L, Rao SQ, Yang ZQ, Jiao XA. Isolation and genomic characterization of P.A-5, a novel virulent bacteriophage against Enterobacter hormaechei. Microb Pathog 2021; 152:104767. [PMID: 33524565 DOI: 10.1016/j.micpath.2021.104767] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/25/2021] [Accepted: 01/25/2021] [Indexed: 11/17/2022]
Abstract
Enterobacter hormaechei is a foodborne pathogen responsible for neonatal sepsis in humans and respiratory disease in animals. In this work, a new virulent phage (P.A-5) infecting E. hormaechei was isolated from domestic sewage samples and characterized. Transmission electron microscopy revealed that P.A-5 belonged to the family Myoviridae having a head size of 77.53 nm and a tail length of 72.24 nm. The burst size was 262 PFU/cell after a latent period of 20 min. Phage P.A-5 was able to survive in a pH range of 4-9 and resist temperatures up to 55 °C for 60 min. The genome sequence of P.A-5 had homology most similar to that of Shigellae phage MK-13 (GenBank: MK509462.1). Pork artificially contaminated with E. hormaechei was used as a model to evaluate the potential of P.A-5. The results clearly showed that P.A-5 treatment can completely inhibit E. hormaechei growth in pork within 8 h, indicating the potential use of P.A-5 as a biocontrol agent for E. hormaechei.
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Affiliation(s)
- Cao-Wei Chen
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Lei Yuan
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Wen-Yuan Zhou
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Fedrick C Mgomi
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Yuan-Song Zhang
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Yang Wang
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Xiang-Feng Zheng
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Qin Hu
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Lu Gao
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Sheng-Qi Rao
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China
| | - Zhen-Quan Yang
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, PR China; Jiangsu Key Laboratory of Zoonoses, Yangzhou, Jiangsu, 225009, PR China.
| | - Xin-An Jiao
- Jiangsu Key Laboratory of Zoonoses, Yangzhou, Jiangsu, 225009, PR China.
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20
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Cao Y, Zhang Y, Lan W, Sun X. Characterization of vB_VpaP_MGD2, a newly isolated bacteriophage with biocontrol potential against multidrug-resistant Vibrio parahaemolyticus. Arch Virol 2021; 166:413-426. [PMID: 33389104 DOI: 10.1007/s00705-020-04887-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 09/03/2020] [Indexed: 01/21/2023]
Abstract
Vibrio parahaemolyticus is a major foodborne pathogen and is also pathogenic to shrimp. Due to the emergence of multidrug-resistant V. parahaemolyticus strains, bacteriophages have shown promise as antimicrobial agents that could be used for controlling antibiotic-resistant strains. Here, a V. parahaemolyticus phage, vB_VpaP_MGD2, was isolated from a clam (Meretrix meretrix) and further characterized to evaluate its potential capability for biocontrol. Podophage vB_VpaP_MGD2 had a wide host range and was able to lyse 27 antibiotic-resistant V. parahaemolyticus strains. A one-step growth curve showed that vB_VpaP_MGD2 has a short latent period of 10 min and a large burst size of 244 phages per cell. Phage vB_VpaP_MGD2 was able to tolerate a wide range of temperature (30 °C-50 °C) and pH (pH 3-pH 10). Two multidrug-resistant strains (SH06 and SA411) were suppressed by treatment with phage vB_VpaP_MGD2 at a multiplicity of infection of 100 for 24 h without apparent regrowth of bacterial populations. The frequency of mutations causing bacteriophage resistance was relatively low (3.1 × 10-6). Phage vB_VpaP_MGD2 has a double-stranded DNA with a genome size of 45,105 bp. Among the 48 open reading frames annotated in the genome, no lysogenic genes or virulence genes were detected. Sequence comparisons suggested that vB_VpaP_MGD2 is a member of a new species in the genus Zindervirus within the subfamily Autographivirinae. This is the first report of a member of the genus Zindervirus that can infect V. parahaemolyticus. These findings suggest that vB_VpaP_MGD2 may be a candidate biocontrol agent against early mortality syndrome/acute hepatopancreatic necrosis disease (EMS/AHPND) caused by multidrug-resistant V. parahaemolyticus in shrimp production.
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Affiliation(s)
- Yanzi Cao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
| | - Yujie Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
| | - Weiqing Lan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, People's Republic of China.,Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, Shanghai, 201306, People's Republic of China
| | - Xiaohong Sun
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, 201306, People's Republic of China. .,Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai, 201306, People's Republic of China.
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Ssekatawa K, Byarugaba DK, Kato CD, Wampande EM, Ejobi F, Tweyongyere R, Nakavuma JL. A review of phage mediated antibacterial applications. ALEXANDRIA JOURNAL OF MEDICINE 2020. [DOI: 10.1080/20905068.2020.1851441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Kenneth Ssekatawa
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi
- African Center of Excellence in Materials Product Development and Nanotechnology (MAPRONANO ACE), College of Engineering Design Art and Technology, Makerere University, Kampala, Uganda
| | - Denis K. Byarugaba
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Charles D. Kato
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Eddie M. Wampande
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Francis Ejobi
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Robert Tweyongyere
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Jesca L. Nakavuma
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
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22
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Chauhan R, Singh N, Pal GK, Goel G. Trending biocontrol strategies against Cronobacter sakazakii: A recent updated review. Food Res Int 2020; 137:109385. [DOI: 10.1016/j.foodres.2020.109385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/27/2020] [Accepted: 06/02/2020] [Indexed: 12/29/2022]
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23
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The role of the general stress response regulator RpoS in Cronobacter sakazakii biofilm formation. Food Res Int 2020; 136:109508. [DOI: 10.1016/j.foodres.2020.109508] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 06/25/2020] [Accepted: 06/28/2020] [Indexed: 11/20/2022]
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24
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Montso PK, Mlambo V, Ateba CN. Efficacy of novel phages for control of multi-drug resistant Escherichia coli O177 on artificially contaminated beef and their potential to disrupt biofilm formation. Food Microbiol 2020; 94:103647. [PMID: 33279072 DOI: 10.1016/j.fm.2020.103647] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/22/2020] [Accepted: 08/23/2020] [Indexed: 01/21/2023]
Abstract
Contaminated beef is a prominent source of foodborne pathogens such as Escherichia coli O177. Susceptibility of nine multi-drug resistant E. coli O177 strains against eight individual phages and six phage cocktails was assessed using polystyrene microplate titer plate. Further, 180 beef samples were independently inoculated with E. coli O177 cells in triplicates and treated with eight individual phages and six phage cocktails to determine their efficacy in inhibiting bacteria growth at 4 °C over a 7-day incubation period. Results revealed that all E. coli O177 strains were susceptible to the phages. A significant log reduction in viable E. coli O177 cell counts was observed on beef samples upon phage treatment over the 7-day incubation period. Two individual phages and three phage cocktails reduced E. coli cell counts to levels below the detection limit (1.0 log10 CFU/g). Log reduction of viable E. coli cell counts ranged from 2.10 to 7.81 CFU/g for individual phages and from 2.86 to 7.81 CFU/g for cocktails. Individual phages and phage cocktails inhibited E. coli O177 biofilm formation with phage cocktails showing high efficacy. Furthermore, phage cocktails showed greater efficacy in destroying pre-formed biofilm than individual phages. Based on these findings, we concluded that phage cocktails developed in this study could be used to reduce E. coli O177 contamination and extend the shelf-life of stored raw beef.
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Affiliation(s)
- Peter Kotsoana Montso
- Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Victor Mlambo
- School of Agricultural Sciences, Faculty of Agriculture and Natural Sciences, University of Mpumalanga, Private Bag X11283, Mbombela, 1200, South Africa
| | - Collins Njie Ateba
- Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
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25
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Cacciatore FA, Brandelli A, Malheiros PDS. Combining natural antimicrobials and nanotechnology for disinfecting food surfaces and control microbial biofilm formation. Crit Rev Food Sci Nutr 2020; 61:3771-3782. [PMID: 32811167 DOI: 10.1080/10408398.2020.1806782] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The elimination of microbial surface contaminants is one of the most important steps in Good Manufacturing Practices in order to maintain food safety. This is usually achieved by detergents and chemical sanitizers, although an increased demand exists for the use of natural products for disinfection purposes. Several natural substances present antibacterial activity against the main foodborne pathogens, demonstrating great potential for use in the food industry. Some difficulties such as high volatility, residual taste and/or degradation by exposure to harsh processing conditions have been reported. Nanoparticle encapsulation appears as a strategy to protect bioactive compounds, maintaining their antimicrobial activity and providing controlled release as well. This article presents the potential of natural antimicrobials and their combination with nanotechnological strategies as an alternative for food surface disinfection and prevent microbial biofilm formation.
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Affiliation(s)
- Fabiola Ayres Cacciatore
- Departamento de Ciência de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Adriano Brandelli
- Departamento de Ciência de Alimentos, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.,Centro de Nanociência e Nanotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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26
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Ni P, Wang L, Deng B, Jiu S, Ma C, Zhang C, Almeida A, Wang D, Xu W, Wang S. Combined Application of Bacteriophages and Carvacrol in the Control of Pseudomonas syringae pv. actinidiae Planktonic and Biofilm Forms. Microorganisms 2020; 8:microorganisms8060837. [PMID: 32498472 PMCID: PMC7356356 DOI: 10.3390/microorganisms8060837] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 12/15/2022] Open
Abstract
Pseudomonas syringae pv. actinidiae (Psa) is the causative agent of the bacterial canker of kiwifruit (Actinidia spp.). Phage therapy has been suggested as a viable alternative approach to controlling this disease, but its efficacy is limited by the emergence of phage-resistant mutants. Carvacrol is an essential oil that may be useful for the control of Psa. Combination therapies can be used to overcome resistance development. Here, the combination of phages (single phage suspensions of phages PN05 and PN09, and a cocktail of both phages) and carvacrol was investigated in controlling Psa planktonic and biofilm forms in vitro. The phage therapy alone (with phages PN05 and PN09), and the carvacrol alone (minimum inhibitory concentration 2.0 mg/mL), inhibited Psa growth, but the combined effect of both therapies was more effective. The phages alone effectively inhibited Psa growth for 24 h, but Psa regrowth was observed after this time. The carvacrol (2.0 mg/mL) alone prevented the biofilm formation for 48 h, but did not destroy the pre-formed biofilms. The combined treatment, phages and carvacrol (2.0 mg/mL), showed a higher efficacy, preventing Psa regrowth for more than 40 h. In conclusion, the combined treatment with phages and carvacrol may be a promising, environment-friendly and cost-effective approach to controlling Psa in the kiwifruit industry.
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Affiliation(s)
- Peien Ni
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Lei Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Bohan Deng
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Songtao Jiu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Chao Ma
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Caixi Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Adelaide Almeida
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;
| | - Dapeng Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
| | - Wenping Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
- Correspondence: (W.X.); (S.W.)
| | - Shiping Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (P.N.); (L.W.); (B.D.); (S.J.); (C.M.); (C.Z.); (D.W.)
- Correspondence: (W.X.); (S.W.)
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27
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Li M, Shi D, Li Y, Xiao Y, Chen M, Chen L, Du H, Zhang W. Recombination of T4-like Phages and Its Activity against Pathogenic Escherichia coli in Planktonic and Biofilm Forms. Virol Sin 2020; 35:651-661. [PMID: 32451882 DOI: 10.1007/s12250-020-00233-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 03/10/2020] [Indexed: 01/13/2023] Open
Abstract
The increasing emergence of multi-drug resistant Escherichia coli (E. coli) has become a global concern, primarily due to the limitation of antimicrobial treatment options. Phage therapy has been considered as a promising alternative for treating infections caused by multi-drug resistant E. coli. However, the application of phages as a promising antimicrobial agent is limited by their narrow host range and specificity. In this research, a recombinant T4-like phage, named WGqlae, has been obtained by changing the receptor specificity determinant region of gene 37, using a homologous recombination platform of T4-like phages established by our laboratory previously. The engineered phage WGqlae can lyse four additional hosts, comparing to its parental phages WG01 and QL01. WGqlae showed similar characteristics, including thermo and pH stability, optimal multiplicity of infection and one-step growth curve, to the donor phage QL01. In addition, sequencing results showed that gene 37 of recombinant phage WGqlae had genetically stable even after 20 generations. In planktonic test, phage WGqlae had significant antimicrobial effects on E. coli DE192 and DE205B. The optical density at 600 nm (OD600) of E. coli in phage WGqlae treating group was significantly lower than that of the control group (P < 0.01). Besides, phage WGqlae demonstrated an obvious inhibitory effect on the biofilm formation and the clearance of mature biofilms. Our study suggested that engineered phages may be promising candidates for future phage therapy applications against pathogenic E. coli in planktonic and biofilm forms.
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Affiliation(s)
- Min Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Animal Bacteriology, Ministry of Agriculture, Nanjing, 210095, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Donglin Shi
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Animal Bacteriology, Ministry of Agriculture, Nanjing, 210095, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yanxiu Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Animal Bacteriology, Ministry of Agriculture, Nanjing, 210095, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuyi Xiao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Animal Bacteriology, Ministry of Agriculture, Nanjing, 210095, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mianmian Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
- Department of Veterinary Medicine, College of Animal Science and Technology, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Liang Chen
- Hackensack-Meridian Health Center for Discovery and Innovation, Nutley, NJ, 07110, USA
| | - Hong Du
- Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China.
| | - Wei Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
- Key Laboratory of Animal Bacteriology, Ministry of Agriculture, Nanjing, 210095, China.
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
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Ripolles‐Avila C, Ríos‐Castillo AG, Fontecha‐Umaña F, Rodríguez‐Jerez JJ. Removal of
Salmonella enterica
serovar Typhimurium and
Cronobacter sakazakii
biofilms from food contact surfaces through enzymatic catalysis. J Food Saf 2020. [DOI: 10.1111/jfs.12755] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Carolina Ripolles‐Avila
- Area of Human Nutrition and Food Sciences, Departament de Ciència Animal i dels Aliments, Facultat de VeterinariaUniversitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CP 08193 Barcelona Spain
| | - Abel G. Ríos‐Castillo
- Area of Human Nutrition and Food Sciences, Departament de Ciència Animal i dels Aliments, Facultat de VeterinariaUniversitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CP 08193 Barcelona Spain
| | - Fabio Fontecha‐Umaña
- Area of Human Nutrition and Food Sciences, Departament de Ciència Animal i dels Aliments, Facultat de VeterinariaUniversitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CP 08193 Barcelona Spain
| | - José J. Rodríguez‐Jerez
- Area of Human Nutrition and Food Sciences, Departament de Ciència Animal i dels Aliments, Facultat de VeterinariaUniversitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CP 08193 Barcelona Spain
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29
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Lin Y, Subbiah J, Chen L, Verma T, Liu Y. Validation of radio frequency assisted traditional thermal processing for pasteurization of powdered infant formula milk. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106897] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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A sensitive electrochemical aptasensor based on MB-anchored GO for the rapid detection of Cronobacter sakazakii. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04426-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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31
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O'Sullivan L, Bolton D, McAuliffe O, Coffey A. The use of bacteriophages to control and detect pathogens in the dairy industry. INT J DAIRY TECHNOL 2019. [DOI: 10.1111/1471-0307.12641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lisa O'Sullivan
- Department of Biological Sciences Cork Institute of Technology Rossa Avenue Bishopstown Ireland
| | - Declan Bolton
- Food Research Centre Teagasc Ashtown, Dublin 15 Ireland
| | | | - Aidan Coffey
- Department of Biological Sciences Cork Institute of Technology Rossa Avenue Bishopstown Ireland
- APC Microbiome Institute, Biosciences Building University College Cork Cork Ireland
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Pinheiro LAM, Pereira C, Frazão C, Balcão VM, Almeida A. Efficiency of Phage φ6 for Biocontrol of Pseudomonas syringae pv. syringae: An in Vitro Preliminary Study. Microorganisms 2019; 7:E286. [PMID: 31450735 PMCID: PMC6780397 DOI: 10.3390/microorganisms7090286] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 07/31/2019] [Accepted: 08/21/2019] [Indexed: 12/14/2022] Open
Abstract
Pseudomonas syringae is a plant-associated bacterial species that has been divided into more than 60 pathovars, with the Pseudomonas syringae pv. syringae being the main causative agent of diseases in a wide variety of fruit trees. The most common treatments for biocontrol of P. syringae pv. syringae infections has involved copper derivatives and/or antibiotics. However, these treatments should be avoided due to their high toxicity to the environment and promotion of bacterial resistance. Therefore, it is essential to search for new approaches for controlling P. syringae pv. syringae. Phage therapy can be a useful alternative tool to the conventional treatments to control P. syringae pv. syringae infections in plants. In the present study, the efficacy of bacteriophage (or phage) φ6 (a commercially available phage) was evaluated in the control of P. syringae pv. syringae. As the plants are exposed to the natural variability of physical and chemical parameters, the influence of pH, temperature, solar radiation and UV-B irradiation on phage φ6 viability was also evaluated in order to develop an effective phage therapy protocol. The host range analysis revealed that the phage, besides its host (P. syringae pv. syringae), also infects the Pseudomonas syringae pv. actinidiae CRA-FRU 12.54 and P. syringae pv. actinidiae CRA-FRU 14.10 strains, not infecting strains from the other tested species. Both multiplicities of infection (MOIs) tested, 1 and 100, were effective to inactivate the bacterium, but the MOI 1 (maximum reduction of 3.9 log CFU/mL) was more effective than MOI 100 (maximum reduction of 2.6 log CFU/mL). The viability of phage φ6 was mostly affected by exposure to UV-B irradiation (decrease of 7.3 log PFU/mL after 8 h), exposure to solar radiation (maximum reduction of 2.1 PFU/mL after 6 h), and high temperatures (decrease of 8.5 PFU/mL after 6 days at 37 °C, but a decrease of only 2.0 log PFU/mL after 67 days at 15 °C and 25 °C). The host range, high bacterial control and low rates of development of phage-resistant bacterial clones (1.20 × 10-3) suggest that this phage can be used to control P. syringae pv. syringae infections in plants, but also to control infections by P. syringae pv. actinidiae, the causal agent of bacterial canker of kiwifruit. Although the stability of phage φ6 was affected by UV-B and solar radiation, this can be overcome by the application of phage suspensions at the end of the day or at night.
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Affiliation(s)
- Larindja A M Pinheiro
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Carla Pereira
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Carolina Frazão
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Victor M Balcão
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- PhageLab-Laboratory of Biofilms and Bacteriophages, University of Sorocaba, 18023-000 Sorocaba, São Paulo, Brazil
| | - Adelaide Almeida
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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34
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Lu J, Chen Q, Pan B, Qin Z, Fan L, Xia Q, Zhao L. Efficient inhibition of Cronobacter biofilms by chitooligosaccharides of specific molecular weight. World J Microbiol Biotechnol 2019; 35:87. [DOI: 10.1007/s11274-019-2662-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 05/16/2019] [Indexed: 12/20/2022]
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35
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Rehman S, Ali Z, Khan M, Bostan N, Naseem S. The dawn of phage therapy. Rev Med Virol 2019; 29:e2041. [PMID: 31050070 DOI: 10.1002/rmv.2041] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/17/2019] [Accepted: 01/19/2019] [Indexed: 12/19/2022]
Abstract
Bacteriophages or phages, being the most abundant entities on earth, represent a potential solution to a diverse range of problems. Phages are successful antibacterial agents whose use in therapeutics was hindered by the discovery of antibiotics. Eventually, because of the development and spread of antibiotic resistance among most bacterial species, interest in phage as therapeutic entities has returned, because their noninfectious nature to humans should make them safe for human nanomedicine. This review highlights the most recent advances and progress in phage therapy and bacterial hosts against which phage research is currently being conducted with respect to food, human, and marine pathogens. Bacterial immunity against phages and tactics of phage revenge to defeat bacterial defense systems are also summarized. We have also discussed approved phage-based products (whole phage-based products and phage proteins) and shed light on their influence on the eukaryotic host with respect to host safety and induction of immune response against phage preparations. Moreover, creation of phages with desirable qualities and their uses in cancer treatment, vaccine production, and other therapies are also reviewed to bring together evidence from the scientific literature about the potentials and possible utility of phage and phage encoded proteins in the field of therapeutics and industrial biotechnology.
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Affiliation(s)
- Sana Rehman
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Zahid Ali
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Momna Khan
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Nazish Bostan
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Saadia Naseem
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
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36
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Yin Y, Ni P, Liu D, Yang S, Almeida A, Guo Q, Zhang Z, Deng L, Wang D. Bacteriophage potential against Vibrio parahaemolyticus biofilms. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.11.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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37
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Kajsík M, Bugala J, Kadličeková V, Szemes T, Turňa J, Drahovská H. Characterization of Dev-CD-23823 and Dev-CT57, new Autographivirinae bacteriophages infecting Cronobacter spp. Arch Virol 2019; 164:1383-1391. [DOI: 10.1007/s00705-019-04202-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 02/09/2019] [Indexed: 02/04/2023]
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Hyman P. Phages for Phage Therapy: Isolation, Characterization, and Host Range Breadth. Pharmaceuticals (Basel) 2019; 12:E35. [PMID: 30862020 PMCID: PMC6469166 DOI: 10.3390/ph12010035] [Citation(s) in RCA: 251] [Impact Index Per Article: 50.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/20/2019] [Accepted: 03/04/2019] [Indexed: 01/21/2023] Open
Abstract
For a bacteriophage to be useful for phage therapy it must be both isolated from the environment and shown to have certain characteristics beyond just killing strains of the target bacterial pathogen. These include desirable characteristics such as a relatively broad host range and a lack of other characteristics such as carrying toxin genes and the ability to form a lysogen. While phages are commonly isolated first and subsequently characterized, it is possible to alter isolation procedures to bias the isolation toward phages with desirable characteristics. Some of these variations are regularly used by some groups while others have only been shown in a few publications. In this review I will describe (1) isolation procedures and variations that are designed to isolate phages with broader host ranges, (2) characterization procedures used to show that a phage may have utility in phage therapy, including some of the limits of such characterization, and (3) results of a survey and discussion with phage researchers in industry and academia on the practice of characterization of phages.
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Affiliation(s)
- Paul Hyman
- Department of Biology/Toxicology, Ashland University, 401 College Ave., Ashland, OH 44805, USA.
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Alvarez-Ordóñez A, Coughlan LM, Briandet R, Cotter PD. Biofilms in Food Processing Environments: Challenges and Opportunities. Annu Rev Food Sci Technol 2019; 10:173-195. [PMID: 30653351 DOI: 10.1146/annurev-food-032818-121805] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review examines the impact of microbial communities colonizing food processing environments in the form of biofilms on food safety and food quality. The focus is both on biofilms formed by pathogenic and spoilage microorganisms and on those formed by harmless or beneficial microbes, which are of particular relevance in the processing of fermented foods. Information is presented on intraspecies variability in biofilm formation, interspecies relationships of cooperativism or competition within biofilms, the factors influencing biofilm ecology and architecture, and how these factors may influence removal. The effect on the biofilm formation ability of particular food components and different environmental conditions that commonly prevail during food processing is discussed. Available tools for the in situ monitoring and characterization of wild microbial biofilms in food processing facilities are explored. Finally, research on novel agents or strategies for the control of biofilm formation or removal is summarized.
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Affiliation(s)
- Avelino Alvarez-Ordóñez
- Department of Food Hygiene and Technology and Institute of Food Science and Technology, Universidad de León, 24071 León, Spain;
| | - Laura M Coughlan
- Teagasc Food Research Centre, Moorepark, Fermoy, County Cork, Ireland.,School of Microbiology, University College Cork, County Cork, Ireland
| | - Romain Briandet
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, 78350 France
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, County Cork, Ireland.,APC Microbiome Ireland, Cork, County Cork, Ireland
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O'Sullivan L, Bolton D, McAuliffe O, Coffey A. Bacteriophages in Food Applications: From Foe to Friend. Annu Rev Food Sci Technol 2019; 10:151-172. [PMID: 30633564 DOI: 10.1146/annurev-food-032818-121747] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Bacteriophages (phages) have traditionally been considered troublesome in food fermentations, as they are an important cause of starter-culture failure and trigger significant financial losses. In addition, from an evolutionary perspective, phages have contributed to the pathogenicity of many bacteria through transduction of virulence genes. In contrast, phages have played an important positive role in molecular biology. Moreover, these agents are increasingly being recognized as a potential solution to the detection and biocontrol of various undesirable bacteria, which cause either spoilage of food materials, decreased microbiological safety of foods, or infectious diseases in food animals and crops. The documented successful applications of phages and various phage-derived molecules are discussed in this review, as are many promising new uses that are currently under development.
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Affiliation(s)
- Lisa O'Sullivan
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Ireland;
| | | | | | - Aidan Coffey
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Ireland; .,APC Microbiome Institute, University College Cork, Cork, Ireland
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Brady TS, Fajardo CP, Merrill BD, Hilton JA, Graves KA, Eggett DL, Hope S. Bystander Phage Therapy: Inducing Host-Associated Bacteria to Produce Antimicrobial Toxins against the Pathogen Using Phages. Antibiotics (Basel) 2018; 7:E105. [PMID: 30518109 PMCID: PMC6315864 DOI: 10.3390/antibiotics7040105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 01/31/2023] Open
Abstract
Brevibacillus laterosporus is often present in beehives, including presence in hives infected with the causative agent of American Foulbrood (AFB), Paenibacillus larvae. In this work, 12 B. laterosporus bacteriophages induced bactericidal products in their host. Results demonstrate that P. larvae is susceptible to antimicrobials induced from field isolates of the bystander, B. laterosporus. Bystander antimicrobial activity was specific against the pathogen and not other bacterial species, indicating that the production was likely due to natural competition between the two bacteria. Three B. laterosporus phages were combined in a cocktail to treat AFB. Healthy hives treated with B. laterosporus phages experienced no difference in brood generation compared to control hives over 8 weeks. Phage presence in bee larvae after treatment rose to 60.8 ± 3.6% and dropped to 0 ± 0.8% after 72 h. In infected hives the recovery rate was 75% when treated, however AFB spores were not susceptible to the antimicrobials as evidenced by recurrence of AFB. We posit that the effectiveness of this treatment is due to the production of the bactericidal products of B. laterosporus when infected with phages resulting in bystander-killing of P. larvae. Bystander phage therapy may provide a new avenue for antibacterial production and treatment of disease.
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Affiliation(s)
- T Scott Brady
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
| | - Christopher P Fajardo
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
| | - Bryan D Merrill
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
| | - Jared A Hilton
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
| | - Kiel A Graves
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
| | - Dennis L Eggett
- Department of Statistics, Brigham Young University, Provo, UT 84602, USA.
| | - Sandra Hope
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
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Wang H, Jiang Y, Zhang Y, Zhang Z, Yang X, Ali MA, Fox EM, Gobius KS, Man C. Silver nanoparticles: A novel antibacterial agent for control of Cronobacter sakazakii. J Dairy Sci 2018; 101:10775-10791. [PMID: 30316605 DOI: 10.3168/jds.2018-15258] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/24/2018] [Indexed: 11/19/2022]
Abstract
Silver nanoparticles (AgNP) have been widely applied because of their broad spectrum of antimicrobial activities against bacteria, fungi, and viruses. However, little research has been done to evaluate their effects on Cronobacter sakazakii, an opportunistic pathogen usually infecting infants and having a high fatality rate. The aims of this work were to investigate the antibacterial property of novel, synthesized, positively charged silver nanoparticles against C. sakazakii and to discuss the potential antibacterial mechanisms involved. In this study, the spherical and face-centered cubic silver nanoparticles had a mean particle size of 31.2 nm and were synthesized by reducing Ag+ using citrate and dispersed by glycerol and polyvinylpyrrolidone (PVP) under alkaline conditions. Minimum inhibitory concentrations (MIC) and inhibition zone tests showed that the AgNP exhibited strong antibacterial activity against 4 tested C. sakazakii strains with mean MIC of 62.5 to 125 mg/L and average inhibition zone diameters of 13.8 to 16.3 mm. Silver nanoparticles caused cell membrane injury accompanied by adsorption of AgNP onto the cell surface, as shown by changes in cell morphology, cell membrane hyperpolarization, and accelerated leakage of intracellular reducing sugars and proteins outward from the cytoplasm. In addition, dysfunction of the respiratory chain was induced after treatment with AgNP, which was supported by a decrease in intracellular ATP and inhibition of related dehydrogenases. This research indicates that AgNP could be a novel and efficient antibacterial agent to control C. sakazakii contamination in environments producing powdered infant formulas from milk.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - Yujun Jiang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - Yashuo Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - Ziwei Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - Xinyan Yang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - Md Aslam Ali
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030; Department of Agro-Processing, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
| | - Edward M Fox
- CSIRO Agriculture and Food, Werribee VIC 3030, Australia
| | - Kari S Gobius
- CSIRO Agriculture and Food, Werribee VIC 3030, Australia
| | - Chaoxin Man
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science and Engineering, Northeast Agricultural University, Harbin, China, 150030.
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Yi L, Li X, Luo L, Lu Y, Yan H, Qiao Z, Lü X. A novel bacteriocin BMP11 and its antibacterial mechanism on cell envelope of Listeria monocytogenes and Cronobacter sakazakii. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.03.038] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Brady TS, Merrill BD, Hilton JA, Payne AM, Stephenson MB, Hope S. Bacteriophages as an alternative to conventional antibiotic use for the prevention or treatment of Paenibacillus larvae in honeybee hives. J Invertebr Pathol 2017; 150:94-100. [PMID: 28917651 DOI: 10.1016/j.jip.2017.09.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/06/2017] [Accepted: 09/11/2017] [Indexed: 02/07/2023]
Abstract
American Foulbrood (AFB) is an infectious disease caused by the bacteria, Paenibacillus larvae. P. larvae phages were isolated and tested to determine each phages' host range amongst 59 field isolate strains of P. larvae. Three phages were selected to create a phage cocktail for the treatment of AFB infections according to the combined phages' ability to lyse all tested strains of bacteria. Studies were performed to demonstrate the safety and efficacy of the phage cocktail treatment as a replacement for traditional antibiotics for the prevention of AFB and the treatment of active infections. Safety verification studies confirmed that the phage cocktail did not adversely affect the rate of bee death even when administered as an overdose. In a comparative study of healthy hives, traditional prophylactic antibiotic treatment experienced a 38±0.7% decrease in overall hive health, which was statistically lower than hive health observed in control hives. Hives treated with phage cocktail decreased 19±0.8%, which was not statistically different than control hives, which decreased by 10±1.0%. In a study of beehives at-risk for a natural infection, 100±0.5% of phage-treated hives were protected from AFB infection, while 80±0.5% of untreated controls became infected. AFB infected hives began with an average Hitchcock score of 2.25 out of 4 and 100±0.5% of the hives recovered completely within two weeks of treatment with phage cocktail. While the n numbers for the latter two studies are small, the results for both the phage protection rate and the phage cure rate were statistically significant (α=0.05). These studies demonstrate the powerful potential of using a phage cocktail against AFB and establish phage therapy as a feasible treatment.
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Affiliation(s)
- T Scott Brady
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Bryan D Merrill
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Jared A Hilton
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Ashley M Payne
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Michael B Stephenson
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Sandra Hope
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA.
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