Interaction Analyses of Amyloid β Peptide (1–40) with Glycosaminoglycan Model Polymers
作者:Yoshiko Miura、Hikaru Mizuno
DOI:10.1246/bcsj.20100094
日期:2010.9.15
We synthesized a novel glycopolymer library with 6-sulfo-GlcNAc and glucuronic acid (GlcA) based on the structure of glycosaminoglycans. The molecular weights of the polymers were controlled via living radical polymerization. The interactions of Aβ(1–40) with glycopolymers were analyzed by inhibition activity of protein aggregation using ThT fluorescence assay, atomic force microscopy observation, and CD spectra. The inhibition activity of Aβ was much affected by the sugar structure and molecular weight of the polymer. The glycopolymers carrying 6-sulfo-GlcNAc showed inhibition activity toward Aβ aggregate, and those with 6-suflo-GlcNAc and GlcA showed the strong inhibition activity. The glycopolymer libraries yielded valuable information about Aβ aggregate with glycosaminoglycans.
我们根据糖胺聚糖的结构,合成了一个含有 6-sulfo-GlcNAc 和葡萄糖醛酸 (GlcA) 的新型糖聚合物库。聚合物的分子量是通过活自由基聚合控制的。利用 ThT 荧光测定法、原子力显微镜观察和 CD 光谱分析了 Aβ(1-40)与糖聚合物的相互作用对蛋白质聚集的抑制活性。糖聚合物的糖结构和分子量对 Aβ 的抑制活性有很大影响。含有6-sulfo-GlcNAc的糖聚合物对Aβ聚集体具有抑制活性,而含有6-suflo-GlcNAc和GlcA的糖聚合物则具有很强的抑制活性。糖聚合物库提供了有关 Aβ 与糖胺聚糖聚合的宝贵信息。