2011
Cisplatin and a potent platinum(IV) complex-mediated enhancement of TRAIL-induced cancer cells killing is associated with modulation of upstream events in the extrinsic apoptotic pathway
VONDÁLOVÁ BLANÁŘOVÁ, Olga; Iva JELÍNKOVÁ; Arpad SZOEOR; Belma SKENDER; Karel SOUČEK et al.Základní údaje
Originální název
Cisplatin and a potent platinum(IV) complex-mediated enhancement of TRAIL-induced cancer cells killing is associated with modulation of upstream events in the extrinsic apoptotic pathway
Autoři
VONDÁLOVÁ BLANÁŘOVÁ, Olga; Iva JELÍNKOVÁ; Arpad SZOEOR; Belma SKENDER; Karel SOUČEK; Viktor HORVÁTH; Alena VACULOVÁ; Ladislav ANDERA; Petr SOVA; Janos SZOELLOSI; Jiřina HOFMANOVÁ; Gyoergy VEREB a Alois KOZUBÍK
Vydání
Carcinogenesis, Oxford, Oxford University Press, 2011, 0143-3334
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30105 Physiology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 5.702
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/11:00062480
Organizační jednotka
Přírodovědecká fakulta
UT WoS
Klíčová slova anglicky
MEMBRANE-LIPID RAFTS; CHEMOTHERAPEUTIC-AGENTS; IN-VITRO; CASPASE-8 ACTIVATION; CARCINOMA CELLS; INHIBITORY PROTEIN; ANTITUMOR-ACTIVITY; DEATH RECEPTORS; LIGAND TRAIL; II CELLS
Změněno: 12. 4. 2013 09:15, Ing. Andrea Mikešková
Anotace
V originále
TRAIL (tumor necrosis factor-related apoptosis-inducing ligand) can selectively trigger apoptosis in various cancer cell types. However, many cancer cells are resistant to death receptor-mediated apoptosis. Combination therapy with platinum complexes may affect TRAIL-induced signaling via modulation of various steps in apoptotic pathways. Here, we show that cisplatin or a more potent platinum(IV) complex LA-12 used in 20-fold lower concentration enhanced killing effects of TRAIL in human colon and prostate cancer cell lines via stimulation of caspase activity and overall apoptosis. Both platinum complexes increased DR5 surface expression in colon cancer cells. Small interfering RNA-mediated DR5 silencing rescued cells from sensitizing effects of platinum drugs on TRAIL-induced caspase-8 activation and apoptosis, showing the functional importance of DR5 in the effects observed. In addition, both cisplatin and LA-12 triggered the relocalization of DR4 and DR5 receptors to lipid rafts and accelerated internalization of TRAIL, which may also affect TRAIL signaling. Collectively, modulations of the initial steps of the extrinsic apoptotic pathway at the level of DR5 and plasma membrane are important for sensitization of colon and prostate cancer cells to TRAIL-induced apoptosis mediated by LA-12 and cisplatin.