title: Self-assembled peptide-polyoxometalate hybrid nanospheres: two in one enhances targeted inhibition of amyloid β-peptide aggregation associated with Alzheimer's disease.
abstract: Amyloid fibril formation is a critical step in Alzheimer's disease (AD) pathogenesis. Inhibition of Aβ aggregation has shown promising against AD and has been used in clinic trials. Here, a novel strategy is reported for the self-assembly of polyoxometalate-peptide (POM@P) hybrid particles as bifunctional Aβ inhibitors. The two-in-one bifunctional POM@P nanoparticles show an enhanced inhibition effect on amyloid aggregation in mice cerebrospinal fluid. Incorporating a clinically used Aβ fibril-staining dye, congo red (CR), into the hybrid colloidal spheres, the nanoparticles can also act as an effective fluorescent probe to monitor the inhibition process of POM@P via CR fluorescence change in real time. It is believed that such flexible organic-inorganic hybrid systems may prompt the design of new multifunctional materials for AD treatment.
authors: Laboratory of Chemical Biology, Division of Biological Inorganic Chemistry, State Key Laboratory of Rare Earth, Resource Utilization, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun, Jilin 130022, China, Fax: 86-431-85262625.
authors: Meng
authors: M
authors: Li
authors: Can
authors: C
authors: Xu
authors: Li
authors: L
authors: Wu
authors: Jinsong
authors: J
authors: Ren
authors: Enbo
authors: E
authors: Wang
authors: Xiaogang
authors: X
authors: Qu
mesh_terms: D000544:Alzheimer Disease / Q000473:pathology*; D016229:Amyloid beta-Peptides / Q000037:antagonists & inhibitors* / Q000737:chemistry* / Q000633:toxicity; D000818:Animals; D016923:Cell Death / Q000187:drug effects; D003102:Colloids / Q000737:chemistry; D003224:Congo Red / Q000378:metabolism; D007700:Kinetics; D051379:Mice; D008856:Microscopy, Fluorescence; D054118:Nanospheres / Q000737:chemistry* / Q000648:ultrastructure; D016716:PC12 Cells; D020836:Protein Structure, Quaternary; D051381:Rats; D017973:Tungsten Compounds / Q000494:pharmacology*; D000099294:Polyoxometalates
chemical_list: D016229:Amyloid beta-Peptides; D003102:Colloids; D003224:Congo Red; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates
keywords: alzheimer's disease; amyloids; nanoparticles; peptide inhibitors; polyoxometalates; self-assembly