Design of a novel fibronectin-mimetic peptide-amphiphile for functionalized biomaterials

Anastasia Mardilovich, Jennifer A. Craig, Matthew Q. McCammon, Ashish Garg, Efrosini Kokkoli

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

The interaction of the α 5β 1 integrin with its ligand, fibronectin, supports numerous adhesive functions and has an important role in health and disease. In recent years, there has been a considerable effort in designing fibronectin-mimetic peptides to target the integrin. However, to date, the therapeutic use of these peptides has been limited, as they cannot accurately mimic fibronectin's binding affinity for α 5β 1. A peptide-amphiphile (PR_b) was synthesized with a peptide headgroup composed of four building blocks: a spacer; RGDSP, the primary recognition site for α 5β 1; PHSRN, the synergy binding site; and a linker. The linker was designed to mimic two important criteria: the distance and the hydrophobicity/hydrophilicity between PHSRN and RGD in fibronectin. Human umbilical vein endothelial cells were seeded on different substrates and evaluated in terms of adhesion, spreading, specificity, cytoskeleton organization, focal adhesions, and secretion of extracellular fibronectin. This peptide was shown to perform comparably to fibronectin, indicating that a biomimetic approach can result in the design of novel peptides with therapeutic potential for biomaterial functionalization.

Original languageEnglish (US)
Pages (from-to)3259-3264
Number of pages6
JournalLangmuir
Volume22
Issue number7
DOIs
StatePublished - Mar 28 2006

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