Title: Neuroprotective effect of Neurotropin on H2O2-induced injury in pheochromocytoma cells
Abstract:Objective
To investigate the effect of Neurotropin on H2O2-induced oxidative stress injury in pheochromocytoma (PC12) cells and its potential mechanism.
Methods
The CCK-8 assay was applied to m...Objective
To investigate the effect of Neurotropin on H2O2-induced oxidative stress injury in pheochromocytoma (PC12) cells and its potential mechanism.
Methods
The CCK-8 assay was applied to measure the cell viability while the flow cytometry was used to detect the occurrence of cells oxidative injury, the level of intracellular reactive oxygen species (ROS) and changes of mitochondrial membrane potential. The ROS was observed by fluorescence microscope, and the mRNA expressions of Caspase-3, Bax, and Bcl-2 were detected by immunofluorescence and quantitative real time polymerase chain reaction (qRT-PCR).
Results
As the increase of H2O2 concentration, the survival rate of PC12 cells was decreased gradually. The treatment with 450 μM of H2O2 for 24 h induced the cell viability, apoptosis and necrosis significantly and increased the level of the ROS evidently; the red/green fluorescence ratios of JC-1 were decreased in the mitochondrial membrane potential; the mRNA expressions of Bax and Caspase-3 were significantly increased, while the mRNA expression of Bcl-2 was decreased (P<0.05, compared with the control group). In contrary, with pretreatment of Neurotropin (0.01 UN/ml) for 12 h, it obviously enhanced the cell viability and mRNA expressions of Bc1-2, decreased the rates of apoptosis and necrosis, lessened the accumulation of the ROS, increased the mitochondrial membrane potential, and inhibited the expressions of Bax and Caspase-3 (P<0.05, compared with the H2O2 group).
Conclusion
Neurotropin can inhibit the H2O2-induced injury in PC12 cells. Its neuroprotective role may relate to decreasing the level of the ROS, maintaining the high energy of the mitochondrial membrane potential, inhibiting the expression of pro-apoptotic gene expression and promoting anti-apoptotic gene expression.
Key words:
Neurotropin; PC12 cells; Oxidative stress injury; Mitochondrial membrane potential; ApoptosisRead More
Publication Year: 2017
Publication Date: 2017-03-15
Language: en
Type: article
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