Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 정병문 | * |
dc.date.accessioned | 2016-08-28T12:08:00Z | - |
dc.date.available | 2016-08-28T12:08:00Z | - |
dc.date.issued | 2012 | * |
dc.identifier.issn | 0024-9297 | * |
dc.identifier.other | OAK-8511 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/222405 | - |
dc.description.abstract | L-Polypeptides and D-polypeptides can be prepared from natural L-amino acids and non-natural d-amino acids, respectively. In this study, poly(ethylene glycol)-poly(L-alanine-co-L-phenyl alanine) (PEG-L-PAF) and poly(ethylene glycol)-poly(D-alanine-co-D-phenyl alanine) (PEG-D-PAF) with similar molecular weight and composition, but different stereochemistry were investigated, focusing on thermogelling behavior and biodegradation. The sol-to-gel transition temperature of both PEG-L-PAF and PEG-D-PAF aqueous solutions decreased from 26 to 7 °C as the concentration increased from 4.0 wt % to 9.0 wt %. Dynamic light scattering, transmission electron microscopy, circular dichroism spectra, and 13C NMR spectra suggested that the sol-to-gel transition involved changes in molecular assemblies resulting from dehydration of PEG for both PEG-L-PAF and PEG-D-PAF. In particular, the significant differences between PEG-L-PAF and PEG-D-PAF were observed for histocompatibility as well as in vitro/in vivo degradation. Only PEG-L-PAF was significantly degraded by cathepsin B and elastase, as well as under in vivo conditions. The histocompatibility assayed by the H&E staining method showed that formation of the collagen capsule around the PEG-D-PAF gel was thicker than the PEG-L-PAF gel, indicating that acute inflammation was milder with PEG-L-PAF gel than with PEG-D-PAF gel. Current study emphasizes the significance of stereochemistry in biomaterial development. © 2012 American Chemical Society. | * |
dc.language | English | * |
dc.title | PEG-L-PAF and PEG-D-PAF: Comparative study on thermogellation and biodegradation | * |
dc.type | Article | * |
dc.relation.issue | 4 | * |
dc.relation.volume | 45 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 2007 | * |
dc.relation.lastpage | 2013 | * |
dc.relation.journaltitle | Macromolecules | * |
dc.identifier.doi | 10.1021/ma202809c | * |
dc.identifier.wosid | WOS:000300757000031 | * |
dc.identifier.scopusid | 2-s2.0-84857560188 | * |
dc.author.google | Kang E.Y. | * |
dc.author.google | Yeon B. | * |
dc.author.google | Moon H.J. | * |
dc.author.google | Jeong B. | * |
dc.contributor.scopusid | 정병문(7102237959) | * |
dc.date.modifydate | 20240118155902 | * |