Antimicrobial dendrimer active against Escherichia coli biofilms

Shuyu Hou, Chunhui Zhou, Zhigang Liu, Anne W. Young, Zhengshuang Shi, Dacheng Ren, Neville R. Kallenbach

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


We have investigated the ability of a previously reported antimicrobial peptide dendrimer (RW)4D to inactivate Escherichia coli RP437 in planktonic culture and in biofilms. The results show that the dendrimer inhibits bacterial growth in both planktonic and biofilm states. Live/Dead staining assays reveal that most bacteria in a preformed biofilm lose viability after treatment with this peptide. This result is in marked contrast to most existing reports that antimicrobial peptides are ineffective against mature bacterial biofilms.

Original languageEnglish (US)
Pages (from-to)5478-5481
Number of pages4
JournalBioorganic and Medicinal Chemistry Letters
Issue number18
StatePublished - Sep 15 2009


  • Antimicrobial
  • Biofilm
  • Dendrimer peptide

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry


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