A Self-Assembled Spherical Complex Displaying a Gangliosidic Glycan Cluster Capable of Interacting with Amyloidogenic Proteins
作者:Sota Sato、Yutaka Yoshimasa、Daishi Fujita、Maho Yagi-Utsumi、Takumi Yamaguchi、Koichi Kato、Makoto Fujita
DOI:10.1002/anie.201501981
日期:2015.7.13
self‐assembled spherical complex that displays a cluster of the GM1 pentasaccharide, and successfully demonstrate its ability to interact with amyloid β and α‐synuclein. Due to the lack of hydrophobic lipid moieties, which would stably trap these cohesive proteins or give rise to toxic aggregates, this artificial cluster enabled NMR spectroscopic characterization of the early encounter stage of protein interactions
聚糖的生理和病理功能通过其聚集作用而得以促进,例如一系列神经节苷脂,唾液酸化鞘糖脂,它们可作为细菌毒素和病毒的受体。此外,神经元细胞膜上的神经节苷脂GM1簇与淀粉样蛋白特异性相互作用,触发其构象转变并导致神经变性。在这里,我们开发了一种自组装的球形复合物,该复合物显示了GM1五糖簇,并成功证明了其与淀粉样蛋白β和α-突触核蛋白相互作用的能力。由于缺乏疏水性脂质部分,该部分会稳定地捕获这些内聚蛋白或产生有毒的聚集体,