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Near-infrared target enhanced peripheral clearance of amyloid-β in Alzheimer's disease model
Biomaterials. 2021 Aug 7;276:121065. doi: 10.1016/j.biomaterials.2021.121065.
Mengmeng Ma 1, Zhenqi Liu 1, Nan Gao 2, Kai Dong 2, Zifeng Pi 2, Lihua Kang 3, Xiubo Du 4, Jinsong Ren 2, Xiaogang Qu 5
Abstract:
...Herein, we construct a near-infrared (NIR) regulated surface-transformable and target peptide-guided upconversion platform (UCNP/ONA-P/K), serving as a safe and effective way for Aβ clearance. Taking advantage of extended blood circulation, high selectivity toward Aβ, and surface-transformable property, such UCNP/ONA-P/K can address the challenges of peripheral Aβ clearance by a combination of enhancing the enrichment of plasma Aβ, preventing the unfavorable aggregation of Aβ and simultaneously facilitating the hepatic clearance of the captured Aβ. After verified by a series of systematic toxicity evaluation, cell uptake, deep tissue penetration, and hemolytic experiments, in vivo studies demonstrate that UCNP/ONA-P/K can efficiently decrease brain Aβ burden and reverse memory deficits in 3xTg-AD mice. Overall, this NIR multi-functional design provides a new biocompatible and efficient way for Aβ removal, which will promote the application of peripheral clearance of Aβ for AD treatment.
PMID: 34391018
Tags: Alzheimer’s, beta-amyloid, beta-amyloid removal, Infrared, methods, mice