Neuroprotective effect of synthetic chalcone derivatives as competitive dual inhibitors against μ-calpain and cathepsin B through the downregulation of tau phosphorylation and insoluble Aβ peptide formation

  • Kyung Hwa Jeon
  • , Eunyoung Lee
  • , Kyu Yeon Jun
  • , Ji Eun Eom
  • , Soo Yeon Kwak
  • , Younghwa Na
  • , Youngjoo Kwon

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A series of chalcone derivatives were synthesized and evaluated for their μ-calpain and cathepsin B inhibitory activities. Among the tested chalcone derivatives, two compounds, 7 and 11, showed potent inhibitory activities against m-calpain and cathepsin B and were selected for further evaluation. Compounds 7 and 11 showed enzyme inhibitory activities at the cellular level and displayed neuroprotective effects against oxidative stress-induced apoptosis in SH-SY5Y cells, a human neuroblastoma cell line. Moreover, compounds 7 and 11 reduced p25 formation, tau phosphorylation and insoluble Aβ peptide formation. Enzyme kinetic experiments and docking studies revealed that compounds 7 and 11 competitively inhibited both μ-calpain and cathepsin B enzymes.

Original languageEnglish
Pages (from-to)433-444
Number of pages12
JournalEuropean Journal of Medicinal Chemistry
Volume121
DOIs
StatePublished - 4 Oct 2016

Bibliographical note

Funding Information:
This research was supported by the Health Fellowship Foundation, the National Research Foundation of Korea (NRF) grant funded by the Korean government ( MEST ) ( NRF-2013R1A1A2060408 and NRF-2014M3A9A9073908 ) and the grant from the Korean Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea ( HI14C2469 ). Appendix A

Publisher Copyright:
© 2016 Elsevier Masson SAS.

Keywords

  • Ab formation
  • Alzheimer's disease
  • Cathepsin B inhibitor
  • Chalcone
  • Tau hyperphosphorylation
  • μ-Calpain inhibitor

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