Therapeutic Application of Phages against Clinically Important Bacteria and Zoonoses

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 4224

Special Issue Editor


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Guest Editor
Division of Epidemiology, Zoonoses and Antimicrobial Resistance, Department Biological Safety, Federal Institute for Risk Assessment (BfR), Diedersdorfer Weg 1, D-12277 Berlin, Germany
Interests: bacteriophages (phages); plasmids; horizontal gene transfer; antimicrobial resistance; genomics; zoonoses; ESKAPE-bacteria
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Special Issue Information

Dear Colleagues,

Clinically relevant bacteria like Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter cloacae (so-called ESKAPE organisms) are of high importance, as the number of infections associated with them are on a rise. Bacteria of these species are widespread, since they are able to adapt to the prevailing environmental conditions by the exchange of genetic material (i.e., DNA, RNA). The uptake of plasmids and bacteriophages can support their survival and might also be associated with the acquisition of antimicrobial and biocide resistance, which further increase their clinical importance. As the number of human infections caused by multidrug-resistant (MDR) bacteria is steadily increasing and the prevailing therapeutic options for their treatment are reduced and sometimes exhausted, alternative treatment strategies are needed.

More than a hundred years ago, a potential treatment alternative was discovered by Frederick Tworth and Felix d’Herelle. The discovery of bacteriophages (phages) and their lytic activity against bacteria provides an easy option to combat bacterial infections. For some decades, the use of phages received high attention, but with the discovery of penicillin and other antibiotics, phages were set aside due to their high specificity. As the introduction of antimicrobials in the clinical routine often rapidly leads to the development and spread of antimicrobial resistance, questions on the economic and plausibility of the discovery of novel antimicrobial substances arises. In this context, bacteriophages reclaim attention as “a forgotten cure”, especially to fight life-threatening MDR bacteria. Some companies worldwide as well as different associations have recognized the suitability of phages and have developed cocktails of well-characterized collections of phages for different application strategies. However, up to now, the availability of well-characterized and assessed phages for use in the different sectors (i.e., veterinary and human) is limited. This Special Issue will support the publication of novel results on the use of bacteriophages to fight bacteria (clinically relevant as well as zoonotic bacteria).

Manuscripts in this Special Issue should provide insight into at least one of the following subjects:

  • Bacteriophages and their lytic action on zoonotic and clinically relevant bacteria (including foodborne pathogens)
  • Different aspects of phage biocontrol and therapy
  • Occurrence, characterization, and distribution of lytic bacteriophages from different sources (i.e., environment, animals, humans, wastewater, etc.)
  • Interactions of lytic bacteriophages and their hosts
  • Different aspects of phage resistance mechanisms in bacteria
  • Dissemination of antimicrobial resistance by bacteriophages
  • Reports on novel phage genomes against important zoonotic bacteria and human pathogens and their characterization

Dr. Jens André Hammerl
Guest Editor

Manuscript Submission Information

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Keywords

  • Bacteriophages
  • biocontrol
  • application
  • therapy
  • assessment
  • phage-host interaction
  • genome
  • whole-genome sequencing

Published Papers (1 paper)

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Research

21 pages, 4086 KiB  
Article
Characterization and Full Genome Sequence of Novel KPP-5 Lytic Phage against Klebsiella pneumoniae Responsible for Recalcitrant Infection
by Ahmed R. Sofy, Noha K. El-Dougdoug, Ehab E. Refaey, Rehab A. Dawoud and Ahmed A. Hmed
Biomedicines 2021, 9(4), 342; https://doi.org/10.3390/biomedicines9040342 - 28 Mar 2021
Cited by 19 | Viewed by 3596
Abstract
Klebsiella pneumoniae is a hazardous opportunistic pathogen that is involved in many serious human diseases and is considered to be an important foodborne pathogen found in many food types. Multidrug resistance (MDR) K. pneumoniae strains have recently spread and increased, making bacteriophage therapy [...] Read more.
Klebsiella pneumoniae is a hazardous opportunistic pathogen that is involved in many serious human diseases and is considered to be an important foodborne pathogen found in many food types. Multidrug resistance (MDR) K. pneumoniae strains have recently spread and increased, making bacteriophage therapy an effective alternative to multiple drug-resistant pathogens. As a consequence, this research was conducted to describe the genome and basic biological characteristics of a novel phage capable of lysing MDR K. pneumoniae isolated from food samples in Egypt. The host range revealed that KPP-5 phage had potent lytic activity and was able to infect all selected MDR K. pneumoniae strains from different sources. Electron microscopy images showed that KPP-5 lytic phage was a podovirus morphology. The one-step growth curve exhibited that KPP-5 phage had a relatively short latent period of 25 min, and the burst size was about 236 PFU/infected cells. In addition, KPP-5 phage showed high stability at different temperatures and pH levels. KPP-5 phage has a linear dsDNA genome with a length of 38,245 bp with a GC content of 50.8% and 40 predicted open reading frames (ORFs). Comparative genomics and phylogenetic analyses showed that KPP-5 is most closely associated with the Teetrevirus genus in the Autographviridae family. No tRNA genes have been identified in the KPP-5 phage genome. In addition, phage-borne virulence genes or drug resistance genes were not present, suggesting that KPP-5 could be used safely as a phage biocontrol agent. Full article
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