Effective Inhibition of Cellular ROS Production by MXCXXC-Type Peptides: Potential Therapeutic Applications in Copper-Homeostasis Disorders

Michal S. Shoshan, Edit Y. Tshuva*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Cyclic and acyclic peptides with sequences derived from metallochaperone binding sites, but differing at position 2, were analyzed for their inhibitory reactivity towards cellular ROS (reactive oxygen species) formation and catalytic activity towards oxidation with H2O2, in comparison with three commercial drugs clinically employed in chelation therapy for Wilson's disease. Acyclic peptides were more effective inhibitors than the cyclic ones, with one leading peptide with threonine at position 2 systematically showing the highest efficiency in reducing cellular ROS levels and in inhibiting Cu oxidation. This peptide was more effective than all commercial drugs in all aspects analyzed, and showed no toxicity towards human colon HT-29 cancer cells at concentrations 10–100 times higher than the IC50of the commercial drugs, corroborating its high medicinal potential.

Original languageAmerican English
Pages (from-to)9077-9081
Number of pages5
JournalChemistry - A European Journal
Volume22
Issue number27
DOIs
StatePublished - 27 Jun 2016

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • ROS
  • Wilson's disease⋅
  • copper
  • metallochaperones
  • peptides

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