Norcantharidin induced DU145 cell apoptosis through ROS-mediated mitochondrial dysfunction and energy depletion

Norcantharidin (NCTD), a demethylated analog of cantharidin derived from blister beetles, has attracted considerable attentions in recent years due to their definitely toxic properties and the noteworthy advantages in stimulating bone marrow and increasing the peripheral leukocytes. Hence, it is wor...

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Veröffentlicht in:PloS one 2013-12, Vol.8 (12), p.e84610
Hauptverfasser: Shen, Bo, He, Pei-Jie, Shao, Chun-Lin
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description Norcantharidin (NCTD), a demethylated analog of cantharidin derived from blister beetles, has attracted considerable attentions in recent years due to their definitely toxic properties and the noteworthy advantages in stimulating bone marrow and increasing the peripheral leukocytes. Hence, it is worth studying the anti-tumor effect of NCTD on human prostate cancer cells DU145. It was found that after the treatment of NCTD with different concentrations (25-100 μM), the cell proliferation was significantly inhibited, which led to the appearance of micronucleus (MN). Moreover, the cells could be killed in a dose-/time-dependent manner along with the reduction of PCNA (proliferating cell nuclear antigen) expression, destruction of mitochondrial membrane potential (MMP), down-regulation of MnSOD, induction of ROS, depletion of ATP, and activation of AMPK (Adenosine 5'-monophosphate -activated protein kinase) . In addition, a remarkable release of cytochrome c was found in the cells exposed to 100 μM NCTD and exogenous SOD-PEG could eliminate the generation of NCTD-induced MN. In conclusion, our studies indicated that NCTD could induce the collapse of MMP and mitochondria dysfunction. Accumulation of intercellular ROS could eventually switch on the apoptotic pathway by causing DNA damage and depleting ATP.
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Hence, it is worth studying the anti-tumor effect of NCTD on human prostate cancer cells DU145. It was found that after the treatment of NCTD with different concentrations (25-100 μM), the cell proliferation was significantly inhibited, which led to the appearance of micronucleus (MN). Moreover, the cells could be killed in a dose-/time-dependent manner along with the reduction of PCNA (proliferating cell nuclear antigen) expression, destruction of mitochondrial membrane potential (MMP), down-regulation of MnSOD, induction of ROS, depletion of ATP, and activation of AMPK (Adenosine 5'-monophosphate -activated protein kinase) . In addition, a remarkable release of cytochrome c was found in the cells exposed to 100 μM NCTD and exogenous SOD-PEG could eliminate the generation of NCTD-induced MN. In conclusion, our studies indicated that NCTD could induce the collapse of MMP and mitochondria dysfunction. 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Hence, it is worth studying the anti-tumor effect of NCTD on human prostate cancer cells DU145. It was found that after the treatment of NCTD with different concentrations (25-100 μM), the cell proliferation was significantly inhibited, which led to the appearance of micronucleus (MN). Moreover, the cells could be killed in a dose-/time-dependent manner along with the reduction of PCNA (proliferating cell nuclear antigen) expression, destruction of mitochondrial membrane potential (MMP), down-regulation of MnSOD, induction of ROS, depletion of ATP, and activation of AMPK (Adenosine 5'-monophosphate -activated protein kinase) . In addition, a remarkable release of cytochrome c was found in the cells exposed to 100 μM NCTD and exogenous SOD-PEG could eliminate the generation of NCTD-induced MN. In conclusion, our studies indicated that NCTD could induce the collapse of MMP and mitochondria dysfunction. 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subjects Adenosine Triphosphate - metabolism
AMP
AMP-Activated Protein Kinases
Anticancer properties
Antigens
Antineoplastic Agents - pharmacology
Apoptosis
Apoptosis - drug effects
ATP
Beetles
Bisbenzimidazole
Blistering
Blotting, Western
Bone marrow
Bridged Bicyclo Compounds, Heterocyclic - pharmacology
Cancer therapies
Care and treatment
Cell culture
Cell growth
Cell Line, Tumor
Cell proliferation
Cell Proliferation - drug effects
Cytochrome
Cytochrome c
Cytochromes c - metabolism
Deoxyribonucleic acid
Depletion
DNA
DNA damage
Dose-Response Relationship, Drug
Flow Cytometry
Gallbladder
Humans
In Situ Nick-End Labeling
Kinases
Leukocytes
Male
Medical prognosis
Membrane potential
Membrane Potential, Mitochondrial - drug effects
Micronucleus Tests
Mitochondria
Mitochondria - drug effects
Norcantharidin
Phosphatase
Polyethylene glycol
Proliferating cell nuclear antigen
Proliferating Cell Nuclear Antigen - metabolism
Prostate cancer
Prostatic Neoplasms - drug therapy
Protein kinase
Proteins
Reactive Oxygen Species - metabolism
Superoxide Dismutase - metabolism
title Norcantharidin induced DU145 cell apoptosis through ROS-mediated mitochondrial dysfunction and energy depletion
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