Linked Life Data

12099815

Source:http://linkedlifedata.com/resource/pubmed/id/12099815

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-7-8
pubmed:abstractText
To address the need for bioactive materials toward clinical applications in wound healing and tissue regeneration, an artificial protein was created by recombinant DNA methods and modified by grafting of poly(ethylene glycol) diacrylate. Subsequent photopolymerization of the acrylate-containing precursors yielded protein-graft-poly(ethylene glycol) hydrogels. The artificial protein contained repeating amino acid sequences based on fibrinogen and anti-thrombin III, comprising an RGD integrin-binding motif, two plasmin degradation sites, and a heparin-binding site. Two-dimensional adhesion studies showed that the artificial protein had specific integrin-binding capability based on the RGD motif contained in its fibrinogen-based sequence. Furthermore, heparin bound strongly to the protein's anti-thrombin III-based region. Protein-graft-poly(ethylene glycol) hydrogels were plasmin degradable, had Young's moduli up to 3.5 kPa, and supported three-dimensional outgrowth of human fibroblasts. Cell attachment in three dimensions resulted from specific cell-surface integrin binding to the material's RGD sequence. Hydrogel penetration by cells involved serine-protease mediated matrix degradation in temporal and spatial synchrony with cellular outgrowth. Protein-graft-poly(ethylene glycol) hydrogels represent a new and versatile class of biomimetic hybrid materials that hold clinical promise in serving as implants to promote wound healing and tissue regeneration.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1525-7797
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
710-23
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:articleTitle
Biologically engineered protein-graft-poly(ethylene glycol) hydrogels: a cell adhesive and plasmin-degradable biosynthetic material for tissue repair.
pubmed:affiliation
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA.
pubmed:publicationType
Journal Article