TY - GEN
T1 - Redox modulation of the apoptogenic activity of thapsigargin
AU - Cerella, Claudia
AU - Coppola, Simona
AU - D'Alessio, Maria
AU - De Nicola, Milena
AU - Magrini, Andrea
AU - Bergamaschi, Antonio
AU - Ghibelli, Lina
PY - 2007/3
Y1 - 2007/3
N2 - 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.
AB - 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.
KW - Apoptosis
KW - Calcium
KW - Glutathione
KW - Nitric oxide
KW - Thapsigargin
UR - http://www.scopus.com/inward/record.url?scp=34248529733&partnerID=8YFLogxK
U2 - 10.1196/annals.1387.028
DO - 10.1196/annals.1387.028
M3 - Conference contribution
C2 - 17446488
AN - SCOPUS:34248529733
SN - 1573316490
SN - 9781573316491
T3 - Annals of the New York Academy of Sciences
SP - 469
EP - 472
BT - Sodium-Calcium Exchange and the Plasma Membrane Ca2+ATPase in Ce;; Funcyion
PB - Blackwell Publishing Inc.
ER -