Towards Sequence-Controlled Antimicrobial Polymers: Effect of Polymer Block Order on Antimicrobial Activity

Angew Chem Int Ed Engl. 2018 Apr 16;57(17):4559-4564. doi: 10.1002/anie.201713036. Epub 2018 Mar 15.

Abstract

Synthetic polymers have shown promise in combating multidrug-resistant bacteria. However, the biological effects of sequence control in synthetic antimicrobial polymers are currently not well understood. As such, we investigate the antimicrobial effects of monomer distribution within linear high-order quasi-block copolymers consisting of aminoethyl, phenylethyl, and hydroxyethyl acrylamides made in a one-pot synthesis approach via photoinduced electron transfer-reversible addition-fragmentation chain transfer polymerisation (PET-RAFT). Through different combinations of monomer/polymer block order, antimicrobial and haemolytic activities are tuneable in a manner comparable to antimicrobial peptides.

Keywords: RAFT polymerisation; antimicrobial polymers; multiblock polymers; sequence control.

MeSH terms

  • Acinetobacter baumannii / drug effects*
  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Antimicrobial Cationic Peptides / chemical synthesis
  • Antimicrobial Cationic Peptides / chemistry
  • Antimicrobial Cationic Peptides / pharmacology*
  • Escherichia coli / drug effects*
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Polymers / chemical synthesis
  • Polymers / chemistry
  • Polymers / pharmacology*
  • Pseudomonas aeruginosa / drug effects*
  • Staphylococcus aureus / drug effects*
  • Structure-Activity Relationship

Substances

  • Anti-Bacterial Agents
  • Antimicrobial Cationic Peptides
  • Polymers