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Enzymatic formation of modular cell-instructive fibrin analogs for tissue engineering

Paper ID Volume ID Publish Year Pages File Format Full-Text
10460 685 2007 11 PDF Available
Title
Enzymatic formation of modular cell-instructive fibrin analogs for tissue engineering
Abstract

The molecular engineering of cell-instructive artificial extracellular matrices is a powerful means to control cell behavior and enable complex processes of tissue formation and regeneration. This work reports on a novel method to produce such smart biomaterials by recapitulating the crosslinking chemistry and the biomolecular characteristics of the biopolymer fibrin in a synthetic analog. We use activated coagulation transglutaminase factor XIIIa for site-specific coupling of cell adhesion ligands and engineered growth factor proteins to multiarm poly(ethylene glycol) macromers that simultaneously form proteolytically sensitive hydrogel networks in the same enzyme-catalyzed reaction. Growth factor proteins are quantitatively incorporated and released upon cell-derived proteolytic degradation of the gels. Primary stromal cells can invade and proteolytically remodel these networks both in an in vitro and in vivo setting. The synthetic ease and potential to engineer their physicochemical and bioactive characteristics makes these hybrid networks true alternatives for fibrin as provisional drug delivery platforms in tissue engineering.

Keywords
ECM; Fibrin; Hydrogel; Biomimetic material; Polyethylene glycol; Growth factor
First Page Preview
Enzymatic formation of modular cell-instructive fibrin analogs for tissue engineering
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 28, Issue 26, September 2007, Pages 3856–3866
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering