A novel kit for early diagnosis of Alzheimer's disease using a fluorescent nanoparticle imaging

Sci Rep. 2019 Sep 12;9(1):13184. doi: 10.1038/s41598-019-49711-y.

Abstract

Alzheimer's disease (AD) is a progressive neurodegenerative disease and chronic illness with long preclinical phases and a long clinical duration. Until recently, a lack of potential therapeutic agents against AD was the primary focus of research, which resulted in less effort directed towards developing useful diagnostic approaches. In this study, we developed a WO2002/088706 kit that is composed of fluorescent nanoparticles for the early detection of AD. We provided a fluorescent nanoparticle for detecting markers and a kit for the early diagnosis of AD. The kit consists of a probe molecule comprising an oligonucleotide capable of detecting one or more AD-specific microRNAs (miRNAs) and biomarkers related to AD. Through screening, we selected miR-106b, miR-146b, miR-181a, miR-200a, miR-34a, miR-124b, miR-153, miR-155, Aβ1-42 monomer (mAβ), Aβ1-42 oligomer (oAβ), UCHL1, NLRP3, Tau, STAT3, SORL1, Clusterin, APOE3, APOE4, Nogo-A, IL-13, and Visfatin to serve as AD- and inflammation-related markers. For detection of kit-binding properties, we checked the expression levels of amyloid beta (Aβ), tau protein, and inflammatory mediators in APP/PS/ApoE knockdown (KD) mice and a control group using co-localisation analysis conducted with a confocal microscope. Using a similar approach, we checked the expression levels of miRNAs in HT22 cells. Finally, we used the plasma from AD patients to confirm that our fluorescent nanoparticles and the WO2002/088706 kit will provide a possible early diagnosis to serve as an AD detector that can be further improved for future studies on targeting AD.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alzheimer Disease* / diagnostic imaging
  • Alzheimer Disease* / genetics
  • Alzheimer Disease* / metabolism
  • Animals
  • Biomarkers / metabolism
  • Cell Line
  • Disease Models, Animal
  • Female
  • Fluorescent Dyes / chemistry*
  • Mice
  • Mice, Knockout, ApoE
  • Nanoparticles / chemistry*
  • Oligonucleotides / chemistry*
  • Optical Imaging*
  • Reagent Kits, Diagnostic*

Substances

  • Biomarkers
  • Fluorescent Dyes
  • Oligonucleotides
  • Reagent Kits, Diagnostic