Redox modulation of the apoptogenic activity of thapsigargin

Claudia Cerella, Simona Coppola, Maria D'Alessio, Milena De Nicola, Andrea Magrini, Antonio Bergamaschi, Lina Ghibelli*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Thapsigargin (THG), a selective inhibitor of endoplasmic reticulum (ER) Ca2+-ATPases, causes the rapid emptying of ER Ca2+; in some cell types, this is accompanied by apoptosis, whereas other cells maintain viability. In order to understand the molecular determinants of such a different behavior, we explored the role of oxygen versus nitrogen radicals, by analyzing the apoptogenic ability of THG in the presence of inhibitors of glutathione or nitric oxide (NO) synthesis, respectively. We observed that oxygen radicals play a sensitizing role whereas nitrogen radicals prevent THG-dependent apoptosis, showing that the apoptogenic effect of THG is redox sensitive.

Original languageEnglish
Title of host publicationSodium-Calcium Exchange and the Plasma Membrane Ca2+ATPase in Ce;; Funcyion
Subtitle of host publicationFifth International Conference
PublisherBlackwell Publishing Inc.
Pages469-472
Number of pages4
ISBN (Print)1573316490, 9781573316491
DOIs
Publication statusPublished - Mar 2007
Externally publishedYes

Publication series

NameAnnals of the New York Academy of Sciences
Volume1099
ISSN (Print)0077-8923
ISSN (Electronic)1749-6632

Keywords

  • Apoptosis
  • Calcium
  • Glutathione
  • Nitric oxide
  • Thapsigargin

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