Bailey M Pehde, Devon Niewohner, Faithe E Keomanivong, Michael D Carruthers
{"title":"Genome Sequence and Characterization of <i>Acinetobacter</i> Phage DMU1.","authors":"Bailey M Pehde, Devon Niewohner, Faithe E Keomanivong, Michael D Carruthers","doi":"10.1089/phage.2020.0043","DOIUrl":"https://doi.org/10.1089/phage.2020.0043","url":null,"abstract":"<p><p><b><i>Background:</i></b> There has been a recent resurgence of research on the characterization of <i>Acinetobacter</i> phage for therapeutic use due to the morbidity and mortality associated with treatment failures in cases of multidrug-resistant <i>Acinetobacter baumannii</i> infections. <b><i>Materials and Methods:</i></b> A bacteriophage isolated from activated sludge that targets <i>A. baumannii</i> ATCC19606 was characterized by electron microscopy, genome sequencing, comparative genomics, and a host range analysis. <b><i>Results:</i></b> The morphology of <i>Acinetobacter</i> phage DMU1 resembles phages in <i>Siphoviridae</i>. Comparative genomic and phylogenetic analyses reveal that DMU1 is a siphophage and is most closely related to <i>Acinetobacter</i> phage SH-Ab 15497. Out of the strains tested, DMU1 was found to only infect <i>A. baumannii</i> strains ATCC19606 and ATCC17978. <b><i>Conclusion:</i></b> <i>Acinetobacter</i> phage DMU1 belongs to the <i>Siphoviridae</i> family and is most closely related to <i>Acinetobacter</i> phage SH-Ab 15497. Small-scale host-range analysis of DMU1 indicates a host range that is likely limited to specific <i>A. baumannii</i> strains.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"50-56"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041440/pdf/phage.2020.0043.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"<i>Call for Special Issue Papers:</i> Phage Informatics and AI: Deadline for Manuscript Submission: August 31, 2021.","authors":"Martha R J Clokie","doi":"10.1089/phage.2021.29011.cfp","DOIUrl":"https://doi.org/10.1089/phage.2021.29011.cfp","url":null,"abstract":"","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041482/pdf/phage.2021.29011.cfp.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Virus-Like Particle: Evolving Meanings in Different Disciplines.","authors":"Paul Hyman, Gareth Trubl, Stephen T Abedon","doi":"10.1089/phage.2020.0026","DOIUrl":"https://doi.org/10.1089/phage.2020.0026","url":null,"abstract":"<p><p>Virus-like particle (VLP) is a term that has been in use for about 80 years. Usually, VLP has meant a particle that is like a virus, generally by appearance, but without either proven or actual virus functionality. Initially VLP referred to particles seen in electron microscope images of tissues. More recently, VLP has come to mean other things to other researchers. A key divergence has been use of VLP in association with vaccine and biotechnology applications versus use of VLP in enumeration of viruses in environmental samples. To these viral ecologists, a VLP is a particle that is virus sized, has nucleic acid, and could be a functional virus. But to vaccine developers and biotechnology researchers a VLP instead is a viral structure that intentionally lacks a viral genome. In this study, we look at the history of use of VLP, following changes in meaning as the technology to study VLPs changed.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"11-15"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041479/pdf/phage.2020.0026.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33489264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guillermo Rangel-Pineros, Thomas Sicheritz-Pontén, Martha R J Clokie
{"title":"inPhocus: \"Virus Amigos?\" The Journey of the Development of Phage-Based Biocontrol in the Latin American Poultry and Aquaculture Industries.","authors":"Guillermo Rangel-Pineros, Thomas Sicheritz-Pontén, Martha R J Clokie","doi":"10.1089/phage.2021.29012.grp","DOIUrl":"https://doi.org/10.1089/phage.2021.29012.grp","url":null,"abstract":"","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"3-6"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041483/pdf/phage.2021.29012.grp.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Florencia Payaslian, Victoria Gradaschi, Liliana Rondón Salazar, Maria Eugenia Dieterle, Estefanía Urdániz, Matias Di Paola, Fabio Zon, Mariana Allievi, Carmen Sanchez Rivas, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri
{"title":"Tightening Bonds in Latin America Through Phage Discovery.","authors":"Florencia Payaslian, Victoria Gradaschi, Liliana Rondón Salazar, Maria Eugenia Dieterle, Estefanía Urdániz, Matias Di Paola, Fabio Zon, Mariana Allievi, Carmen Sanchez Rivas, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri","doi":"10.1089/phage.2020.0028","DOIUrl":"10.1089/phage.2020.0028","url":null,"abstract":"<p><p>Between 2015 and 2019, we hosted an International Phage Course at Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina. The 2-week full-time course was hands-on and included lectures from renowned phage biologists. Participating students were able to meet and discuss with recognized experts from around the world in a familiar setting, facilitating the establishment of scientific collaborations and the expansion of their networks. Eighty-four students from 14 Latin American countries have participated in the course, which included isolation, characterization, genome sequencing, and annotation of novel phages. We have successfully created a coursework that enabled the acquisition of new knowledge and expertise in bacteriophage biology and strengthened ties among Latin American colleagues.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"7-10"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041481/pdf/phage.2020.0028.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francesca E Hodges, Thomas Sicheritz-Pontén, Martha R J Clokie
{"title":"The Effect of Oxygen Availability on Bacteriophage Infection: A Review.","authors":"Francesca E Hodges, Thomas Sicheritz-Pontén, Martha R J Clokie","doi":"10.1089/phage.2020.0041","DOIUrl":"10.1089/phage.2020.0041","url":null,"abstract":"<p><p>Bacteriophages offer a viable solution to addressing the global issue of bacterial resistance to antimicrobials. Although knowledge of bacteriophages has increased greatly since their discovery in 1915, a significant amount of what is currently known is based on studies conducted in model conditions and aerobic environments. There are a variety of environments in which bacteriophages could be applied to successfully replace or supplement antimicrobials in agriculture, food production, and human medicine where the amount of oxygen is limited. There is a need to use phages in oxygen-limited environments, but few studies have examined the impact oxygen-limited environments have on the ability of phages to kill their hosts. The work that has been done is, however, insightful and will likely stimulate this area that is growing in importance as our need to use phages grows. This review summarizes the studies to date that have reported the characteristics of phages in both oxygen-rich and oxygen-limited environments. We also discuss the importance of considering the ultimate environment a phage will be applied to when designing experiments to isolate and characterize phages for use in phage-based antimicrobial products.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"16-25"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041485/pdf/phage.2020.0041.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Florencia Payaslian, Victoria Gradaschi, Liliana Rondón Salazar, Maria Eugenia Dieterle, Estefanía Urdániz, Matias Di Paola, José Peña Cárcamo, Fabio Zon, Ezequiel Sosa, Darío Fernandez Do Porto, Matthew Dunne, Pauline Goeller, Jochen Klumpp, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri
{"title":"Isolation and Characterization of vB_MsmS_Celfi: A New <i>Mycobacterium tuberculosis</i> Bacteriophage.","authors":"Florencia Payaslian, Victoria Gradaschi, Liliana Rondón Salazar, Maria Eugenia Dieterle, Estefanía Urdániz, Matias Di Paola, José Peña Cárcamo, Fabio Zon, Ezequiel Sosa, Darío Fernandez Do Porto, Matthew Dunne, Pauline Goeller, Jochen Klumpp, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri","doi":"10.1089/phage.2020.0030","DOIUrl":"10.1089/phage.2020.0030","url":null,"abstract":"<p><p><b><i>Introduction:</i></b> Because of the clinical relevance of <i>Mycobacteria</i>, and from a therapeutic perspective, there is an increasing interest to study phages that infect bacteria belonging to this genus. <b><i>Materials and Methods:</i></b> A phage was isolated from a soil sample, using <i>Mycobacterium smegmatis</i> as host. Its characterization included sequencing, annotation, and analysis of the genome, host range determination, and electron microscopy imaging. <b><i>Results:</i></b> <i>Mycobacterium</i> phage vB_MsmS_Celfi is a temperate phage able to infect <i>Mycobacterium tuberculosis</i> with high efficiency. From electron microscopy images, Celfi belongs to the <i>Siphoviridae</i> family. Genome analysis classified phage Celfi into cluster L, subcluster L2 of Actinobacteriophage clusters. <i>Mycobacterium</i> phage Celfi exhibits a Lysin B distant to those present in other members of the subcluster and other mycobacteriophages. <b><i>Conclusions:</i></b> The discovery of new phages that infect <i>M. tuberculosis</i> could contribute to the development of novel tools for detection systems and future treatment of the disease.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"43-49"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041486/pdf/phage.2020.0030.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Victoria Gradaschi, Florencia Payaslian, Maria Eugenia Dieterle, Liliana Rondón Salazar, Estefanía Urdániz, Matias Di Paola, José Peña Cárcamo, Fabio Zon, Mariana Allievi, Ezequiel Sosa, Darío Fernandez Do Porto, Matthew Dunne, Pauline Goeller, Jochen Klumpp, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri
{"title":"Genome Sequence and Characterization of <i>Lactobacillus casei</i> Phage, vB_LcaM_Lbab1 Isolated from Raw Milk.","authors":"Victoria Gradaschi, Florencia Payaslian, Maria Eugenia Dieterle, Liliana Rondón Salazar, Estefanía Urdániz, Matias Di Paola, José Peña Cárcamo, Fabio Zon, Mariana Allievi, Ezequiel Sosa, Darío Fernandez Do Porto, Matthew Dunne, Pauline Goeller, Jochen Klumpp, Raúl Ricardo Raya, Alejandro Reyes, Mariana Piuri","doi":"10.1089/phage.2020.0029","DOIUrl":"10.1089/phage.2020.0029","url":null,"abstract":"<p><p><b><i>Introduction:</i></b> Only a few <i>Lactobacillus casei</i> phages have so far been characterized. As several <i>L. casei</i> strains are part of probiotic formulations, bacteriophage outbreaks targeting these strains can lead to critical losses within the dairy industry. <b><i>Materials and Methods:</i></b> A new <i>L. casei</i> phage was isolated from raw milk obtained from a milking yard from the province of Buenos Aires. The phage genome was sequenced, annotated, and analyzed. Morphology was determined by electron microscopy and the host range was established. <b><i>Results:</i></b> <i>Lactobacillus</i> phage vB_LcaM_Lbab1 is a member of the <i>Herelleviridae</i> family and features a host range including <i>L. casei/Lactobacillus paracasei</i> and <i>Lactobacillus kefiri</i> strains. We further analyzed the baseplate proteins <i>in silico</i> and found putative carbohydrate binding modules that are responsible for host recognition in other <i>Lactobacillus</i> phages. <b><i>Conclusions:</i></b> A new <i>Lactobacillus</i> phage was isolated and characterized. The focus was made on its host recognition mechanism, pointing toward the development of future strategies to avoid deleterious infections in the dairy industry.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"57-63"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041484/pdf/phage.2020.0029.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33478043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eleanor M Townsend, Lucy Kelly, Lucy Gannon, George Muscatt, Rhys Dunstan, Slawomir Michniewski, Hari Sapkota, Saija J Kiljunen, Anna Kolsi, Mikael Skurnik, Trevor Lithgow, Andrew D Millard, Eleanor Jameson
{"title":"Isolation and Characterization of <i>Klebsiella</i> Phages for Phage Therapy.","authors":"Eleanor M Townsend, Lucy Kelly, Lucy Gannon, George Muscatt, Rhys Dunstan, Slawomir Michniewski, Hari Sapkota, Saija J Kiljunen, Anna Kolsi, Mikael Skurnik, Trevor Lithgow, Andrew D Millard, Eleanor Jameson","doi":"10.1089/phage.2020.0046","DOIUrl":"10.1089/phage.2020.0046","url":null,"abstract":"<p><p><b><i>Introduction:</i></b> <i>Klebsiella</i> is a clinically important pathogen causing a variety of antimicrobial resistant infections in both community and nosocomial settings, particularly pneumonia, urinary tract infection, and sepsis. Bacteriophage (phage) therapy is being considered a primary option for the treatment of drug-resistant infections of these types. <b><i>Methods:</i></b> We report the successful isolation and characterization of 30 novel, genetically diverse <i>Klebsiella</i> phages. <b><i>Results:</i></b> The isolated phages span six different phage families and nine genera, representing both lysogenic and lytic lifestyles. Individual <i>Klebsiella</i> phage isolates infected up to 11 of the 18 <i>Klebsiella</i> capsule types tested, and all 18 capsule-types were infected by at least one of the phages. <b><i>Conclusions:</i></b> Of the <i>Klebsiella</i>-infecting phages presented in this study, the lytic phages are most suitable for phage therapy, based on their broad host range, high virulence, short lysis period and given that they encode no known toxin or antimicrobial resistance genes. Phage isolates belonging to the <i>Sugarlandvirus</i> and <i>Slopekvirus</i> genera were deemed most suitable for phage therapy based on our characterization. Importantly, when applied alone, none of the characterized phages were able to suppress the growth of <i>Klebsiella</i> for more than 12 h, likely due to the inherent ease of <i>Klebsiella</i> to generate spontaneous phage-resistant mutants. This indicates that for successful phage therapy, a cocktail of multiple phages would be necessary to treat <i>Klebsiella</i> infections.</p>","PeriodicalId":74428,"journal":{"name":"PHAGE (New Rochelle, N.Y.)","volume":"2 1","pages":"26-42"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8006926/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25556246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}