Benzyl isothiocyanate (BITC) induces apoptosis of GBM 8401 human brain glioblastoma multiforms cells via activation of caspase-8/Bid and the reactive oxygen species-dependent mitochondrial pathway

2015 ◽  
Vol 31 (12) ◽  
pp. 1751-1760 ◽  
Author(s):  
Hung-Sheng Shang ◽  
Yung-Luen Shih ◽  
Tai-Jung Lu ◽  
Ching-Hsiao Lee ◽  
Shu-Ching Hsueh ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Human Brain ◽  
Reactive Oxygen ◽  
Mitochondrial Pathway ◽  
Caspase 8 ◽  
Oxygen Species ◽  
Benzyl Isothiocyanate

Gossypol induced apoptosis of polymorphonuclear leukocytes and monocytes: Involvement of mitochondrial pathway and reactive oxygen species

2009 ◽  
Vol 31 (2) ◽  
pp. 320-330 ◽  
Author(s):  
Martha Barba-Barajas ◽  
Georgina Hernández-Flores ◽  
José M. Lerma-Díaz ◽  
Pablo C. Ortiz-Lazareno ◽  
Jorge R. Domínguez-Rodríguez ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Polymorphonuclear Leukocytes ◽  
Reactive Oxygen ◽  
Mitochondrial Pathway ◽  
Oxygen Species ◽  
Induced Apoptosis

Pro-and Antioxidative Properties of Cortical Tissue Preparations from Human Brain Exhibiting NMDA-Receptor Characteristics

1999 ◽  
Vol 54 (5-6) ◽  
pp. 438-445
Author(s):  
Matthias Elstner ◽  
Andrea Denke ◽  
Wieland Gsell ◽  
Erich F. Elstner ◽  
Peter Riederer ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Human Brain ◽  
Reactive Oxygen ◽  
Oh Radical ◽  
Oxygen Species ◽  
Cortical Tissue ◽  
Oxidoreductase Activity ◽  
Receptor Sites ◽  
Radical Type

Abstract The effects of cortical tissue preparations (CTP) from human brain on the production of reactive oxygen species (ROS) has been investigated with several biochemical model reactions. As indicators for ROS, fragmentation of the methionine derivatives, α-keto-γ-methyl-thiobutyric acid (KMB) or 1-amino-cyclopropane-1-carboxylic acid (ACC), yielding ethene have been used. With these systems we have shown that production of OH-radical-type oxidants by the xanthine oxidase (XOD)-system is strongly stimulated by CTP. This activity is due to intrinsic iron ions since ethene formation from KMB is stimulated by EDTA , inhibited by desferrioxamine (DesferalR) and also visible with heat-denatured CTP. CTP by themselves have no XOD activity. 3-Hydroxykynurenine (3HK) is another possible substrate for XOD but produces H2O2 without XOD-catalysis, whereas allopurinol is not inhibiting. CTP contain measurable NAD(P)H oxidoreductase activity, producing OH-radical-type oxidants at the expense of NADPH and (to a lesser extent) NADH as electron donors , shown as redox-cycling of 2-methyl-5-hydroxy-1.4-naphthoquinone, plumbagin. Ethene formation from KMB is also driven by both morpholinosydnonimine (SIN) or ONOOH. The reaction driven by SIN is stimulated by CTP and inhibited by catalase, SOD and hemoglobin. Since ethene release from KMB driven by ONOOH is inhibited by CTP the mechanisms driving KMB fragmentation are different for SIN and ONOOH. Furthermore CTP contain approx. 4 U catalase activity per mg protein and very weak peroxidase (POD) activity shown as ACC fragmentation yielding ethene in the presence of both H2O2 and KBr or NaCl. Since ACC binds to CTP and both compounds, ACC and KMB are natural products, present in food (ACC) or synthesized from methionine in vivo (KMB), these compounds may represent protecting agents in systems where reactive oxygen species are formed. One might even speculate that the production of ethene at these membrane receptor sites may have biological functions, since ethene is known to possess anaesthetic activities.

scholarly journals Ivalin Induces Mitochondria-Mediated Apoptosis Associated with the NF-κB Activation in Human Hepatocellular Carcinoma SMMC-7721 Cells

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3809
Author(s):  
Zhuo Han ◽  
Fang-yuan Liu ◽  
Shi-qi Lin ◽  
Cai-yun Zhang ◽  
Jia-hui Ma ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Reactive Oxygen Species ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Mitochondrial Pathway ◽  
Human Hepatocellular Carcinoma ◽  
Induction Effect ◽  
Oxygen Species ◽  
Microtubule Depolymerization ◽  
Apoptotic Effect

Ivalin, a natural compound isolated from Carpesium divaricatum, showed excellent microtubule depolymerization activities among human hepatocellular carcinoma in our previous work. Here, we investigated its functions on mitochondria-mediated apoptosis in hepatocellular carcinoma SMMC-7721 cells. DAPI (4′,6-diamidino-2-phenylindole) staining, annexin V-fluorexcein isothiocyanate (FITC) apoptosis detection, and western blotting were applied to explore the apoptotic effect of Ivalin. Next, the induction effect of Ivalin on the mitochondrial pathway was also confirmed via a series of phenomena including the damage of mitochondria membrane potential, mitochondria cytochrome c escape, cleaved caspase-3 induction, and the reactive oxygen species generation. In this connection, we understood that Ivalin induced apoptosis through the mitochondrial pathway and the overload of reactive oxygen species. Furthermore, we found that the activation of nuclear factor-κB (NF-κB) and subsequent p53 induction were associated with the apoptotic effect of Ivalin. These data confirmed that Ivalin might be a promising pro-apoptotic compound that can be utilized as a potential drug for clinical treatment.

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