Selenium Enhances the Apoptotic Efficacy of Docetaxel Through Activation of TRPM2 Channel in DBTRG Glioblastoma Cells

Neurotoxicity Research
Kemal ErtilavNady Braidy

Abstract

The rate of mitosis of cancer cells is significantly higher than normal primary cells with increased metabolic needs, which in turn enhances the generation of reactive oxygen species (ROS) production. Higher ROS production is known to increase cancer cell dependence on ROS scavenging systems to counteract the increased ROS. Therapeutic options which selectively modulate the levels of intracellular ROS in cancers are likely candidates for drug discovery. Docetaxel (DTX) has demonstrated antitumor activity in preclinical and clinical studies. It is thought that DTX induces cell death through excessive ROS production and increased Ca2+ entry. The Ca2+ permeable TRPM2 channel is activated by ROS. Selenium (Se) has been previously used to stimulate apoptosis for the treatment of glioblastoma cells resistant to DTX. However, the potential mechanism(s) of the additive effect of DTX on TRPM2 channels in cancer cells remains unclear. The aim of this study was to evaluate the effect of combination therapy of DTX and Se on activation of TRPM2 in DBTRG glioblastoma cells. DBTRG cells were divided into four treatment groups: control, DTX (10 nM for 10 h), Se (1 μM for 10 h), and DTX+Se. Our study showed that apoptosis (Annexin V and propidi...Continue Reading

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Datasets Mentioned

BETA
GMX1778

Methods Mentioned

BETA
Assay
confocal microscopy
Protein Assay

Software Mentioned

Image J / Imaris
SPSS
ZEN

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