Title of article :
Enhancement of cisplatin cytotoxicity by benzyl isothiocyanate in HL-60 cells
Author/Authors :
Lee، نويسنده , , Younghyun and Kim، نويسنده , , Yang Jee and Choi، نويسنده , , Young-Joo and Lee، نويسنده , , Joong Won and Lee، نويسنده , , Sunyeong and Chung، نويسنده , , Hai Won، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Abstract :
Cis-diamminedichloroplatinum (II) (cisplatin) is one of the most widely used chemotherapeutic drugs, but its effectiveness is limited by tumor cell resistance and the severe side effects it causes. One strategy for overcoming this problem is the concomitant use of natural dietary compounds as therapeutic agents. Benzyl isothiocyanate (BITC) is a promising chemopreventive agent found in cruciferous vegetables and papaya fruits. The aim of this study was to investigate the effects of BITC on cisplatin-induced cytotoxicity in human promyelocytic leukemia cells and normal human lymphocytes. The combined treatment of HL-60 cells with BITC followed by cisplatin (BITC/cisplatin) caused a significant decrease in cell viability. BITC also increased apoptotic cell death compared to cisplatin treatment alone. In normal human lymphocytes, BITC did not enhance the cytotoxic effects of cisplatin. Cellular exposure to BITC/cisplatin increased reactive oxygen species (ROS) generation but decreased the total glutathione (GSH) level in HL-60 cells. Pretreatment of HL-60 cells with N-acetylcysteine or glutathione monoethyl ester effectively decreased BITC/cisplatin-induced cell death. The addition of the extracellular signal-regulated kinase (ERK) inhibitor PD98059 abolished BITC/cisplatin-induced apoptosis. Taken together, our results suggest that BITC enhances cisplatin-induced cytotoxicity through the generation of ROS, depletion of GSH, and ERK signaling in HL-60 cells.
Keywords :
benzyl isothiocyanate , Cisplatin , Reactive oxygen species , glutathione , extracellular signal-regulated kinase , apoptosis
Journal title :
Food and Chemical Toxicology
Journal title :
Food and Chemical Toxicology