Cell adhesion peptides alter smooth muscle cell adhesion, proliferation, migration, and matrix protein synthesis on modified surfaces and in polymer scaffolds

TitleCell adhesion peptides alter smooth muscle cell adhesion, proliferation, migration, and matrix protein synthesis on modified surfaces and in polymer scaffolds
Publication TypeJournal Article
Year of Publication2002
AuthorsMann, BK, West, JL
JournalJournal of Biomedical Materials Research
Volume60
Issue1
Pagination86 - 93
Date Published04/2002
ISSN1097-4636
Keywordsadhesion peptide; extracellular matrix; Migration; polyethylene glycol; Tissue Engineering
Abstract

The effects of cell adhesion peptides (RGDS, KQAGDV, VAPG) on vascular smooth muscle cells grown on modified surfaces and in tissue-engineering scaffolds were examined. Cells were more strongly adhered to surfaces modified with adhesive ligands than to control surfaces (no ligand or a nonadhesive ligand). Cell migration was higher on surfaces with 0.2 nmol/cm2 of adhesive ligand than on control surfaces, but it was lower on surfaces with 2.0 nmol/cm2 of adhesive ligand than it was on control surfaces. Further, cell proliferation was lower on adhesive surfaces than it was on control surfaces, and it decreased as the ligand density increased. Similarly, in the peptide-grafted hydrogel scaffolds, cell proliferation was lower in scaffolds containing the adhesive peptides than it was in control scaffolds. After 7 days of culture, more collagen per cell was produced in control scaffolds than in scaffolds containing adhesive peptides. In addition, collagen production decreased in the scaffolds as the ligand concentration increased. While modification of a surface or scaffold material with adhesive ligands initially increases cell attachment, it may be necessary to optimize cell adhesion simultaneously with proliferation, migration, and matrix production.

DOI10.1002/jbm.10042
Short TitleJ Biomed Mater Res
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