Anti-HER2 phototoxin based on flavoprotein miniSOG causes the oxidative stress and necrosis of HER2-positive cancer cells

O. N. Shilova, G. M. Proshkina, A. V. Ryabova, S. M. Deyev

Research output: Contribution to journalArticle

2 Citations (Scopus)


Development and functional characterization of novel, high-affinity protein compounds able to selectively kill human cancer cells is an urgent task of modern biomedical research. In this work, we studied the cytotoxicity of a recombinant phototoxic protein DARPin-miniSOG against the HER2-positive human breast adenocarcinoma cells. It was found that targeted phototoxin DARPin-miniSOG interacts specifically with HER2 receptor and causes the light-induced death of HER2-positive cells by the mechanism of necrosis. Irradiation of the cells in the presence of ascorbic acid eliminates the light-induced cytotoxicity of DARPin-miniSOG, which proves the prooxidant mechanism of phototoxin action.

Original languageEnglish
Pages (from-to)14-18
Number of pages5
JournalMoscow University Biological Sciences Bulletin
Issue number1
Publication statusPublished - 1 Jan 2016
Externally publishedYes



  • DNA hypoploid fraction
  • HER2 receptor
  • oxidative stress
  • targeted phototoxin

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)

Cite this