Репозиторий Университета

Resolving the paradox of ferroptotic cell death: Ferrostatin-1 binds to 15LOX/PEBP1 complex, suppresses generation of peroxidized ETE-PE, and protects against ferroptosis


  • Anthonymuthu T.S.
  • Tyurina Y.Y.
  • Sun W.Y.
  • Mikulska-Ruminska K.
  • Shrivastava I.H.
  • Tyurin V.A.
  • Cinemre F.B.
  • Dar H.H.
  • VanDemark A.P.
  • Holman T.R.
  • Sadovsky Y.
  • Stockwell B.R.
  • He R.R.
  • Bahar I.
  • Bayır H.
  • Kagan V.E.
Дата публикации:01.01.2021
Журнал: Redox Biology
БД: Scopus
Ссылка: Scopus

Аннтотация

© 2020 The Authors Hydroperoxy-eicosatetraenoyl-phosphatidylethanolamine (HpETE-PE) is a ferroptotic cell death signal. HpETE-PE is produced by the 15-Lipoxygenase (15LOX)/Phosphatidylethanolamine Binding Protein-1 (PEBP1) complex or via an Fe-catalyzed non-enzymatic radical reaction. Ferrostatin-1 (Fer-1), a common ferroptosis inhibitor, is a lipophilic radical scavenger but a poor 15LOX inhibitor arguing against 15LOX having a role in ferroptosis. In the current work, we demonstrate that Fer-1 does not affect 15LOX alone, however, it effectively inhibits HpETE-PE production by the 15LOX/PEBP1 complex. Computational molecular modeling shows that Fer-1 binds to the 15LOX/PEBP1 complex at three sites and could disrupt the catalytically required allosteric motions of the 15LOX/PEBP1 complex. Using nine ferroptosis cell/tissue models, we show that HpETE-PE is produced by the 15LOX/PEBP1 complex and resolve the long-existing Fer-1 anti-ferroptotic paradox.


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