Epo-C12 inhibits peroxiredoxin 1 peroxidase activity

Bioorg Med Chem. 2021 Jul 1:41:116203. doi: 10.1016/j.bmc.2021.116203. Epub 2021 May 10.

Abstract

Epo-C12 is a synthetic derivative of epolactaene, isolated from Penicillium sp. BM 1689-P. Epo-C12 induces apoptosis in human acute lymphoblastoid leukemia BALL-1 cells. In our previous studies, seven proteins that bind to Epo-C12 were identified by a combination of pull-down experiments using biotinylated Epo-C12 (Bio-Epo-C12) and mass spectrometry. In the present study, the effect of Epo-C12 on peroxiredoxin 1 (Prx 1), one of the proteins that binds to Epo-C12, was investigated. Epo-C12 inhibited Prx 1 peroxidase activity. However, it did not suppress its chaperone activity. Binding experiments between Bio-Epo-C12 and point-mutated Prx 1s suggest that Epo-C12 binds to Cys52 and Cys83 in Prx 1. The present study revealed that Prx 1 is one of the target proteins through which Epo-C12 exerts an apoptotic effect in BALL-1 cells.

Keywords: Chaperone; Epolactaene; Peroxidase; Peroxiredoxin 1; Reactive oxygen species.

MeSH terms

  • Animals
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects*
  • Cell Line, Tumor
  • Enzyme Inhibitors
  • Epoxy Compounds / chemistry
  • Gene Expression Regulation, Enzymologic / drug effects
  • Humans
  • Molecular Structure
  • Mutation
  • Peroxiredoxins / antagonists & inhibitors*
  • Peroxiredoxins / genetics
  • Peroxiredoxins / metabolism
  • Polyenes / chemistry

Substances

  • Antineoplastic Agents
  • Enzyme Inhibitors
  • Epoxy Compounds
  • Polyenes
  • epolactaene
  • PRDX1 protein, human
  • Peroxiredoxins