Redox-Responsive Degradable PEG Cryogels as Potential Cell Scaffolds in Tissue Engineering
作者:Tugba Dispinar、Wim Van Camp、Liesbeth J. De Cock、Bruno G. De Geest、Filip E. Du Prez
DOI:10.1002/mabi.201100396
日期:2012.3
double bond and amine groups is investigated for the synthesis of cryogels at subzero temperature. Low‐molecular‐weight PEG‐based building blocks with amine end groups and disulfide‐containing building blocks with maleimide end groups are combined to synthesize redox‐responsive PEG cryogels. The cryogels exhibit an interconnected macroporous morphology, a high compressive modulus and gelation yields
为了在低于零的温度下合成冷冻凝胶,研究了涉及马来酰亚胺双键和胺基之间反应的迈克尔加成策略。将具有胺端基的低分子量PEG砌块与具有马来酰亚胺端基的含二硫的砌块结合在一起,以合成氧化还原响应性PEG凝胶。低温凝胶具有相互连接的大孔形态,高压缩模量和约95%的胶凝产率。尽管冰晶在生理条件下是稳定的,但在培养基中存在还原剂(谷胱甘肽)的情况下,冰晶完全溶解在水溶性产品中。细胞接种实验和毒理学分析证明了它们在组织工程中作为支架的潜力。