A bioconjugate of Lys and Arg mimics biological activity of the Arg - Gly - Asp peptide sequence

Gholamreza Ehteshami, Daniel C. Brune, John C. Lopez, Stephen Massia

Research output: Contribution to journalArticle

2 Scopus citations


A peptidomimetic, 2-amino-6-[(2-amino-5{guanidino}pentanoyl) amino] hexanoic acid, was synthesized using Lys and Arg to produce a compound that mimics the biological activity of a cell adhesive Arg-Gly-Asp (RGD) peptide, GRGDSP. When immobilized on solid substrates, the peptidomimetic promoted cell adhesion similar to substrates with immobilized GRGDSP. Ligand competition studies demonstrated that cell interactions with the peptidomimetic were integrin-mediated. The peptidomimetic was very stable to proteolytic degradation in comparison to proteolytically unstable peptides. Both GRGDSP and peptidomimetic were stabilized when immobilized on solid substrates. This peptidomimetic has the broad therapeutic utility of the RGD peptides with higher stability and potentially enhanced therapeutic efficacy.

Original languageEnglish (US)
Pages (from-to)85-91
Number of pages7
JournalActa Biomaterialia
Issue number1
Publication statusPublished - Jan 2005



  • Biomaterial coatings
  • Cell adhesion
  • Integrin antagonist
  • RGD peptide mimetic

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Biotechnology
  • Biochemistry
  • Molecular Biology

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