Gold Nanorods with Spatial Separation of CeO 2 Deposition for Plasmonic-Enhanced Antioxidant Stress and Photothermal Therapy of Alzheimer's Disease.
Kezhen GeYingfeng MuMiaoyan LiuZetai BaiZhao LiuDeqin GengFenglei GaoPublished in: ACS applied materials & interfaces (2022)
Activities of catalase (CAT) and superoxide dismutase (SOD) of ceria nanoparticles (CeO 2 NPs) provide the possibility for their application in nervous system oxidative stress diseases including Alzheimer's disease (AD). The addition of hot electrons produced by a plasma photothermal effect can expand the photocatalytic activity of CeO 2 to the near-infrared region (NIR), significantly improving its redox performance. Therefore, we coated both ends of gold nanorods (Au NRs) with CeO 2 NPs, and photocatalysis and photothermal therapy in the NIR are introduced into the treatment of AD. Meanwhile, the spatially separate structure enhances the catalytic performance and photothermal conversion efficiency. In addition, the photothermal effect significantly improves the permeability of the blood-brain barrier (BBB) and overcomes the shortcomings of traditional anti-AD drugs. To further improve the therapeutic efficiency, Aβ-targeted inhibitory peptides were modified on the middle surface of gold nanorods to synthesize KLVFF@Au-CeO 2 (K-CAC) nanocomposites. We have verified their biocompatibility and therapeutic effectiveness at multiple levels in vitro and in vivo , which have a profound impact on the research and clinical transformation of nanotechnology in AD therapy.
Keyphrases
- reduced graphene oxide
- photodynamic therapy
- drug release
- visible light
- cancer therapy
- oxidative stress
- gold nanoparticles
- drug delivery
- randomized controlled trial
- cognitive decline
- fluorescence imaging
- systematic review
- dna damage
- silver nanoparticles
- blood brain barrier
- sensitive detection
- ischemia reperfusion injury
- single molecule
- hydrogen peroxide
- autism spectrum disorder
- mass spectrometry
- amyotrophic lateral sclerosis
- oxide nanoparticles
- stress induced
- quantum dots
- heat stress
- smoking cessation
- cell therapy
- carbon nanotubes
- amino acid