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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.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
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Biosourced Functional Hydroxybenzoate-co-Lactide Polymers with Antimicrobial Activity.

Pedro Salas-Ambrosio1,2, Shelby Vexler1,2, Rajalakshmi P Sivasankaran2

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Summary
This summary is machine-generated.

Researchers developed novel degradable polymers with antimicrobial properties. These functional polymers effectively inhibit Staphylococcus aureus and disrupt biofilms, showing promise for medical applications.

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Area of Science:

  • Biomaterials Science
  • Synthetic Biology
  • Antimicrobial Research

Background:

  • Antimicrobial resistance is a critical global health threat.
  • Bioderived molecules offer potential for developing new antimicrobial agents.
  • Degradable polymers with antimicrobial activity are needed for medical applications.

Purpose of the Study:

  • To design and synthesize a library of benzoate-lactide-based polymers with antimicrobial activity.
  • To evaluate the efficacy of these polymers against Staphylococcus aureus and their biofilm disruption capabilities.
  • To assess the biocompatibility and degradability of the synthesized polymers.

Main Methods:

  • Heterologous production and purification of monomer precursors from engineered fungi.
  • Chemical modification of monomers and ring-closure to form benzo[e][1,4]dioxepine-2,5(3H)-diones.
  • Ring-opening polymerization using a specific catalytic system and initiator, with varying monomer/initiator ratios.
  • Antimicrobial testing against Staphylococcus aureus, biofilm disruption assays, in vitro biocompatibility, and degradability studies.

Main Results:

  • A library of 4-(methyl/allyl/benzyl)oxy-6-(H/alkyl)-2-oxy-benzoate-co-lactide-based polymers was synthesized.
  • Identified polymers demonstrated potent antimicrobial activity against Staphylococcus aureus.
  • The polymers were effective in disrupting Staphylococcus aureus biofilms.
  • The synthesized polymers exhibited good in vitro biocompatibility and confirmed degradability.

Conclusions:

  • The combination of synthetic biology and chemistry enables the production of functional, degradable polymers.
  • These novel polymers show significant potential as potent inhibitors of Staphylococcus aureus.
  • The developed polymers hold promise for future medical applications in combating bacterial infections.