Robust and semi-interpenetrating hydrogels from poly(ethylene glycol) and collagen for elastomeric tissue scaffolds.
Here we present an injectable PEG/collagen hydrogel system with robust networks for use as elastomeric tissue scaffolds. Covalently crosslinked PEG and physically crosslinked collagen form semi-interpenetrating networks. The mechanical strength of the hydrogels depends predominantely on the PEG concentration but the incorporation of collagen into the PEG network enhances hydrogel viscoelasticity, elongation, and also cell adhesion properties. Experimental data show that this hydrogel system exhibits tunable mechanical properties that can be further developed. The hydrogels allow cell adhesion and proliferation in vitro. The results support the prospect of a robust and semi-interpenetrating biomaterial for elastomeric tissue scaffolds applications.
Weldon School of Biomedical Engineering, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907, USA.
Burke K
BK
Chan
Caitlin C
CC
Wippich
Chia-Jung
CJ
Wu
Preeti M
PM
Sivasankar
Gudrun
G
Schmidt
D000818:Animals; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000494:pharmacology; D002417:Cattle; D002448:Cell Adhesion / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D003094:Collagen / Q000737:chemistry*; D020285:Cryoelectron Microscopy; D004548:Elasticity; D020100:Hydrogels; D007267:Injections; D008422:Materials Testing; D051379:Mice; D041681:NIH 3T3 Cells; D011092:Polyethylene Glycols / Q000737:chemistry*; D023822:Tissue Engineering; D054457:Tissue Scaffolds; D014466:Ultraviolet Rays
D001672:Biocompatible Materials; D020100:Hydrogels; D011092:Polyethylene Glycols; D003094:Collagen