Title: Pepsin-inspired polyurethanes containing a tyrosine-fumaric acid-tyrosine segment
Authors: Lu, Haoxiang
Wang, Wei
Zheng, Zhen
Sun, Peiyu
Wang, Xinling
Chang, Feng-Chih
Department of Applied Chemistry
Issue Date: 2012
Abstract: Two kinds of novel peptide mimetic pepsin-inspired degradable polyurethanes were synthesized and characterized. A synthetic pseudo tripeptide acted as chain extender and provided active sites for pepsin biodegradation. In vitro degradation behavior was investigated in simulated gastric fluid containing pepsin, and assessed by H-1 NMR, mass loss and SEM. The results indicated that the pseudo peptide bonds in polyurethanes were effectively digested by the action of pepsin. Furthermore, the rate and degree of pepsin-inspired polyurethanes in simulated gastric fluid containing pepsin could be controlled by alteration of the soft segments and activity of pepsin. The influence of the polymers on human umbilical vein endothelial cells was evaluated by WST-1 assay. The results indicated that the polymers sustained much higher cell viability than the controls.
URI: http://hdl.handle.net/11536/15311
ISSN: 1759-9954
DOI: 10.1039/c2py00481j
Volume: 3
Issue: 2
Begin Page: 498
End Page: 503
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