期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 37, 页码 19402-19411出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm33680d
关键词
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资金
- Ontario Ministry of Research and Innovation
- Ontario Neurotrauma Foundation
- Stem Cell Network
- Canadian Institute of Health Research
- Natural Sciences and Engineering Research Council
With the goal of controlling stem cell fate, for ultimate application in cell delivery, we synthesized a cell delivery vehicle comprised of an injectable hydrogel of hyaluronan (HA) and methyl cellulose (MC) wherein the MC is modified to allow bio-orthogonal coupling chemistry. Specifically, MC was modified using thiol-maleimide and biotin-streptavidin chemistry to covalently conjugate the cell adhesive peptide, glycine-arginine-glycine-aspartic acid-serine (GRGDS), and the oligodendrocyte-differentiating factor, recombinant platelet-derived growth factor A (rPDGF-A). NSPCs differentiated into significantly more oligodendrocytes when cultured in a HAMC hydrogel modified with both PDGF-A and GRGDS compared to controls of unmodified HAMC hydrogel and HAMC modified with only GRGDS. These results demonstrate both the ability to influence NSPC fate with immobilized growth factor and a platform technology for broad applicability in bioactive factor immobilization.
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