Design, synthesis and evaluation of protein disulfide isomerase inhibitors with nitric oxide releasing activity

Bioorg Med Chem Lett. 2020 Feb 1;30(3):126898. doi: 10.1016/j.bmcl.2019.126898. Epub 2019 Dec 17.

Abstract

Protein disulfide isomerase (PDI), a chaperone protein mostly in endoplasmic reticulum, catalyzes disulfide bond breakage, formation, and rearrangement to promote protein folding. PDI is regarded as a new target for treatment of several disorders. Here, based on the combination principle, we report a new PDI reversible modulator 16F16A-NO by replacing the reactive group in a known PDI inhibitor 16F16 with nitric oxide (NO) donor. Using molecular docking experiment, 16F16A-NO could embed into the active cavity of PDI. From newly developed fluorescent assay, 16F16A-NO showed rapid NO release. Furthermore, it is capable to moderately inhibit activity of PDI and S-nitrosylate the protein, indicating by insulin aggregation assay and biotin-switch technique. Finally, it displayed a dose-dependent antiproliferative activity against SH-SY5Y and HeLa tumor cells. Our designed hybrid compound 16F16A-NO showed a reasonable activity and might offer a promising avenue to develop novel PDI inhibitors for disease treatments.

Keywords: Biotin-switch technique; Nitric oxide; Protein disulfide isomerase; S-nitrosylation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Binding Sites
  • Catalytic Domain
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Drug Design*
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / metabolism
  • Enzyme Inhibitors / pharmacology
  • Humans
  • Molecular Docking Simulation
  • Nitric Oxide / metabolism*
  • Nitric Oxide Donors / chemistry*
  • Nitric Oxide Donors / metabolism
  • Nitric Oxide Donors / pharmacology
  • Protein Disulfide-Isomerases / antagonists & inhibitors*
  • Protein Disulfide-Isomerases / metabolism

Substances

  • Enzyme Inhibitors
  • Nitric Oxide Donors
  • Nitric Oxide
  • Protein Disulfide-Isomerases