Archives of Pharmacal Research

, Volume 38, Issue 11, pp 1992–1998

Development of fluorescent probes that bind and stain amyloid plaques in Alzheimer’s disease

  • Seung-Jin Jung
  • Seung-Hwan Park
  • Eun Je Lee
  • Jeong Hoon Park
  • Young Bae Kong
  • Jong Kook Rho
  • Min Goo Hur
  • Seung Dae Yang
  • Yong Dae Park
Research Article

DOI: 10.1007/s12272-015-0617-4

Cite this article as:
Jung, SJ., Park, SH., Lee, E.J. et al. Arch. Pharm. Res. (2015) 38: 1992. doi:10.1007/s12272-015-0617-4

Abstract

β-amyloid (Aβ) plaques in the brain are composed of Aβ40 and Aβ42 peptides, and are the defining pathological feature of Alzheimer’s disease (AD). Fluorescent probes that can detect Aβ plaques have gained increasing interest as potential tools for in vitro and in vivo monitoring of the progression of AD. In this study, chalcone-mimic fluorescent probe 5 was designed and prepared. Probe 5 exhibited an approximately 50-fold increase in emission intensity after mixing with Aβ42 aggregates, a high affinity for Aβ42 aggregates (KD = 1.59 μM), and reasonable lipophilicity (log P value = 2.55). Probe 5 also exhibited specific staining of Aβ plaques in the transgenic mice (APP/PS1) brain sections. Ex vivo fluorescence imaging of the brain from normal and TG mice revealed that probe 5 was able to penetrate the BBB and stain the Aβ plaques. These results suggest that chalcone-mimic probe 5 possessed the requirements of a fluorescent probe for Aβ plaques and may be useful in AD research.

Keywords

Alzheimer’s disease (AD) Aβ plaques Fluorescent probe Chalcone-mimic probes 

Copyright information

© The Pharmaceutical Society of Korea 2015

Authors and Affiliations

  • Seung-Jin Jung
    • 1
  • Seung-Hwan Park
    • 2
  • Eun Je Lee
    • 1
  • Jeong Hoon Park
    • 1
  • Young Bae Kong
    • 1
  • Jong Kook Rho
    • 1
  • Min Goo Hur
    • 1
  • Seung Dae Yang
    • 1
  • Yong Dae Park
    • 1
    • 2
  1. 1.Advanced Radiation Technology Institute, Korea Atomic Energy Research InstituteJeongupRepublic of Korea
  2. 2.Department of Nuclear MedicineChonnam National University Hwasun HospitalHwasunRepublic of Korea

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