Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions

Patricia Perez Esteban, Diana R. Alves, Mark C. Enright, Jessica E. Bean, Alison Gaudion, A. T A Jenkins, Amber E R Young, Tom C. Arnot

Research output: Contribution to journalArticle

Abstract

Bacteriophage therapy is a promising new treatment that may help overcome the threat posed by antibiotic-resistant pathogenic bacteria, which are increasingly identified in hospitalized patients. The development of biocompatible and sustainable vehicles for incorporation of viable bacterial viruses into a wound dressing is a promising alternative. This article evaluates the antimicrobial efficacy of Bacteriophage K against Staphylococcus aureus over time, when stabilized and delivered via an oil-in-water nano-emulsion. Nano-emulsions were formulated via thermal phase inversion emulsification, and then bacterial growth was challenged with either native emulsion, or emulsion combined with Bacteriophage K. Bacteriophage infectivity, and the influence of storage time of the preparation, were assessed by turbidity measurements of bacterial samples. Newly prepared Bacteriophage K/nano-emulsion formulations have greater antimicrobial activity than freely suspended bacteriophage. The phage-loaded emulsions caused rapid and complete bacterial death of three different strains of S. aureus. The same effect was observed for preparations that were either stored at room temperature (18-20°C), or chilled at 4°C, for up to 10 days of storage. A response surface design of experiments was used to gain insight on the relative effects of the emulsion formulation on bacterial growth and phage lytic activity. More diluted emulsions had a less significant effect on bacterial growth, and diluted bacteriophage-emulsion preparations yielded greater antibacterial activity. The enhancement of bacteriophage activity when delivered via nano-emulsions is yet to be reported. This prompts further investigation into the use of these formulations for the development of novel anti-microbial wound management strategies.

Original languageEnglish
Pages (from-to)932-944
Number of pages13
JournalBiotechnology Progress
Volume30
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

Emulsions
Bacteriophages
Oils
Water
Staphylococcus aureus
Growth
Conservation of Natural Resources
Wounds and Injuries
Bandages
Hot Temperature
Anti-Bacterial Agents
Viruses
Bacteria
Temperature

Bibliographical note

This is the peer reviewed version of the following article: Esteban, P. P., Alves, D. R., Enright, M. C., Bean, J. E., Gaudion, A. , Jenkins, A. , Young, A. E. and Arnot, T. C. (2014), Enhancement of the antimicrobial properties of bacteriophage‐K via stabilization using oil‐in‐water nano‐emulsions. Biotechnol Progress, 30: 932-944, which has been published in final form at https://doi.org/10.1002/btpr.1898.  This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

Keywords

  • Burn wound-related infections
  • Oil-in-water nano-emulsion
  • Phage therapy
  • Responsive wound dressings
  • S. aureus infections

Cite this

Perez Esteban, P., Alves, D. R., Enright, M. C., Bean, J. E., Gaudion, A., Jenkins, A. T. A., ... Arnot, T. C. (2014). Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions. Biotechnology Progress, 30(4), 932-944. https://doi.org/10.1002/btpr.1898
Perez Esteban, Patricia ; Alves, Diana R. ; Enright, Mark C. ; Bean, Jessica E. ; Gaudion, Alison ; Jenkins, A. T A ; Young, Amber E R ; Arnot, Tom C. / Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions. In: Biotechnology Progress. 2014 ; Vol. 30, No. 4. pp. 932-944.
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abstract = "Bacteriophage therapy is a promising new treatment that may help overcome the threat posed by antibiotic-resistant pathogenic bacteria, which are increasingly identified in hospitalized patients. The development of biocompatible and sustainable vehicles for incorporation of viable bacterial viruses into a wound dressing is a promising alternative. This article evaluates the antimicrobial efficacy of Bacteriophage K against Staphylococcus aureus over time, when stabilized and delivered via an oil-in-water nano-emulsion. Nano-emulsions were formulated via thermal phase inversion emulsification, and then bacterial growth was challenged with either native emulsion, or emulsion combined with Bacteriophage K. Bacteriophage infectivity, and the influence of storage time of the preparation, were assessed by turbidity measurements of bacterial samples. Newly prepared Bacteriophage K/nano-emulsion formulations have greater antimicrobial activity than freely suspended bacteriophage. The phage-loaded emulsions caused rapid and complete bacterial death of three different strains of S. aureus. The same effect was observed for preparations that were either stored at room temperature (18-20°C), or chilled at 4°C, for up to 10 days of storage. A response surface design of experiments was used to gain insight on the relative effects of the emulsion formulation on bacterial growth and phage lytic activity. More diluted emulsions had a less significant effect on bacterial growth, and diluted bacteriophage-emulsion preparations yielded greater antibacterial activity. The enhancement of bacteriophage activity when delivered via nano-emulsions is yet to be reported. This prompts further investigation into the use of these formulations for the development of novel anti-microbial wound management strategies.",
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Perez Esteban, P, Alves, DR, Enright, MC, Bean, JE, Gaudion, A, Jenkins, ATA, Young, AER & Arnot, TC 2014, 'Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions', Biotechnology Progress, vol. 30, no. 4, pp. 932-944. https://doi.org/10.1002/btpr.1898

Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions. / Perez Esteban, Patricia ; Alves, Diana R.; Enright, Mark C.; Bean, Jessica E.; Gaudion, Alison; Jenkins, A. T A; Young, Amber E R; Arnot, Tom C.

In: Biotechnology Progress, Vol. 30, No. 4, 2014, p. 932-944.

Research output: Contribution to journalArticle

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AU - Perez Esteban, Patricia

AU - Alves, Diana R.

AU - Enright, Mark C.

AU - Bean, Jessica E.

AU - Gaudion, Alison

AU - Jenkins, A. T A

AU - Young, Amber E R

AU - Arnot, Tom C.

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PY - 2014

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N2 - Bacteriophage therapy is a promising new treatment that may help overcome the threat posed by antibiotic-resistant pathogenic bacteria, which are increasingly identified in hospitalized patients. The development of biocompatible and sustainable vehicles for incorporation of viable bacterial viruses into a wound dressing is a promising alternative. This article evaluates the antimicrobial efficacy of Bacteriophage K against Staphylococcus aureus over time, when stabilized and delivered via an oil-in-water nano-emulsion. Nano-emulsions were formulated via thermal phase inversion emulsification, and then bacterial growth was challenged with either native emulsion, or emulsion combined with Bacteriophage K. Bacteriophage infectivity, and the influence of storage time of the preparation, were assessed by turbidity measurements of bacterial samples. Newly prepared Bacteriophage K/nano-emulsion formulations have greater antimicrobial activity than freely suspended bacteriophage. The phage-loaded emulsions caused rapid and complete bacterial death of three different strains of S. aureus. The same effect was observed for preparations that were either stored at room temperature (18-20°C), or chilled at 4°C, for up to 10 days of storage. A response surface design of experiments was used to gain insight on the relative effects of the emulsion formulation on bacterial growth and phage lytic activity. More diluted emulsions had a less significant effect on bacterial growth, and diluted bacteriophage-emulsion preparations yielded greater antibacterial activity. The enhancement of bacteriophage activity when delivered via nano-emulsions is yet to be reported. This prompts further investigation into the use of these formulations for the development of novel anti-microbial wound management strategies.

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KW - Burn wound-related infections

KW - Oil-in-water nano-emulsion

KW - Phage therapy

KW - Responsive wound dressings

KW - S. aureus infections

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Perez Esteban P, Alves DR, Enright MC, Bean JE, Gaudion A, Jenkins ATA et al. Enhancement of the antimicrobial properties of bacteriophage-K via stabilization using oil-in-water nano-emulsions. Biotechnology Progress. 2014;30(4):932-944. https://doi.org/10.1002/btpr.1898