Inhibition by pesticides of the DJ-1/Park7 protein related to Parkinson disease

Toxicology. 2023 Mar 15:487:153467. doi: 10.1016/j.tox.2023.153467. Epub 2023 Feb 24.

Abstract

Parkinson's disease is a severe neurodegenerative disease. Several environmental contaminants such as pesticides have been suspected to favor the appearance of this pathology. The protein DJ-1 (or Park7) protects against the development of Parkinson's disease. Thus, the possible inhibitory effects of about a hundred pesticides on human DJ-1 have been studied. We identified fifteen of them as strong inhibitors of DJ-1 with IC50 values between 0.02 and 30 µM. Thiocarbamates are particularly good inhibitors, as shown by thiram that acts as an irreversible inhibitor of an esterase activity of DJ-1 with an IC50 value of 0.02 µM. Thiram was also found as a good inhibitor of the protective activity of DJ-1 against glycation. Such inhibitory effects could be one of the various biological effects of these pesticides that may explain their involvement in the development of Parkinson's disease.

Keywords: Neurodegenerative diseases; Park7; Pesticides; Thiocarbamates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Humans
  • Neurodegenerative Diseases*
  • Parkinson Disease* / pathology
  • Pesticides* / toxicity
  • Protein Deglycase DJ-1 / genetics
  • Protein Deglycase DJ-1 / metabolism
  • Thiram

Substances

  • Pesticides
  • Protein Deglycase DJ-1
  • Thiram
  • PARK7 protein, human