Identification of novel agonists of the integrin CD11b/CD18

Mohd Hafeez Faridi, Dony Maiguel, Constantinos J. Barth, Darren Stoub, Ruth Day, Stephan Schürer, Vineet Gupta

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


We report the identification of novel small molecule agonists of integrin CD11b/CD18, which increased, in a dose-dependent manner, the adhesion of the integrin CD11b/CD18 expressing cells to two physiologically relevant ligands: Fibrinogen and iC3b. Compound 6 showed an ex vivo EC50 of 10.5 μM and in vitro selectivity for binding to the recombinant αA-domain of CD11b/CD18. In silico docking experiments suggest that the compounds recognized a hydrophobic cleft in the ligand-binding αA-domain, implying an allosteric mechanism of modulation of integrin affinity by this novel compound.

Original languageEnglish (US)
Pages (from-to)6902-6906
Number of pages5
JournalBioorganic and Medicinal Chemistry Letters
Issue number24
StatePublished - Dec 15 2009
Externally publishedYes


  • Agonist
  • CD11b/CD18
  • Cell-adhesion
  • Cell-based assay
  • High-throughput screening
  • Inflammation
  • Integrin
  • Mac-1

ASJC Scopus subject areas

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


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