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The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
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Related Experiment Video

Updated: Dec 9, 2025

Improved Enzyme Protection Assay to Study Staphylococcus aureus Internalization and Intracellular Efficacy of Antimicrobial Compounds
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Supported lysozyme for improved antimicrobial surface protection.

Audrey Beaussart1, Chloé Retourney2, Fabienne Quilès2

  • 1Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France.

Journal of Colloid and Interface Science
|September 11, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a novel method for surface protection against biofilms using biotin-streptavidin interactions to immobilize lysozyme. This approach enhances antimicrobial activity and offers a sustainable strategy for surface functionalization.

Keywords:
Antimicrobial surfacesLigand-receptor graftingLysozymeMicrococcus luteusSingle-molecule force spectroscopy

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Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Microbiology

Background:

  • Developing effective surface protection against microbial biofilms remains a significant challenge.
  • Existing anti-biofilm strategies often rely on coatings with anti-adhesive or antimicrobial properties.
  • Current antimicrobial surface functionalization methods face limitations in sustainability and achieving optimal efficiency of grafted molecules.

Purpose of the Study:

  • To investigate the use of high-affinity ligand-receptor interactions for sustainable surface functionalization with antimicrobial enzymes.
  • To evaluate the impact of specific enzyme orientation on antimicrobial activity.
  • To assess the enhanced antibacterial efficiency of surfaces functionalized via bio-molecular interactions.

Main Methods:

  • Functionalization of surfaces with streptavidin receptors.
  • Grafting of biotinylated lysozyme onto streptavidin-coated surfaces.
  • Atomic force microscopy (AFM)-based single-molecule force spectroscopy to analyze enzyme orientation.
  • Antibacterial efficiency testing against Micrococcus luteus.

Main Results:

  • Ligand-receptor mediated grafting (biotin-streptavidin) enabled correct orientation of lysozyme on the surface.
  • Surface-bound lysozyme demonstrated enhanced activity towards microbial targets.
  • Improved surface protection against Micrococcus luteus was observed with lysozyme grafted via ligand-receptor interactions.

Conclusions:

  • Bio-molecular interactions, specifically biotin-streptavidin, provide a sustainable and effective method for grafting antimicrobial agents onto surfaces.
  • Controlled enzyme orientation via bio-molecular recognition enhances antimicrobial efficacy.
  • This approach offers a promising strategy for developing advanced anti-biofilm surfaces.