Fan JIANG, Guowei ZHANG, Lin AO, et al. BPDE induces apoptosis while melatonin protects in spermatogonial GC-1 cells[J]. Journal of Third Military Medical University, 2017, 39(23): 2323-2328.
DOI:
Fan JIANG, Guowei ZHANG, Lin AO, et al. BPDE induces apoptosis while melatonin protects in spermatogonial GC-1 cells[J]. Journal of Third Military Medical University, 2017, 39(23): 2323-2328. DOI: 10.16016/j.1000-5404.201708180.
BPDE induces apoptosis while melatonin protects in spermatogonial GC-1 cells
摘要
目的
2
探讨7
8-二羟-9
10-环氧苯并[a]芘(benzo[a]pyrene-7
8-diol-9
10-epoxide
BPDE)对小鼠精原细胞株GC-1的细胞毒性机制及褪黑素的保护作用。
方法
2
不同浓度BPDE处理GC-1细胞,采用Annexin V/PI染色及流式细胞仪检测细胞凋亡,JC-1探针染色检测线粒体膜电位,Western blot检测细胞质Cyt C及细胞总蛋白中caspase-9/3的活化水平,DCFH-DA探针及流式细胞仪检测细胞内的活性氧(reactive oxygen species
10-epoxide (BPDE)-induced cytotoxicity in mouse spermatogonial GC-1 cells and the protective role of melatonin in the process.
Methods
2
GC-1 cells were treated with various doses of BPDE. Then
cell apoptosis was detected using Annexin V/PI staining and flow cytometry analysis
and mitochondrial membrane potential was examined by JC-1 staining. After the proteins in the cytoplasm and whole cells were extracted separately
the expression of Cyt C
active caspase-9 and active caspase-3 was measured using Western blot assay. 2
7-dichloro-fluorescin diacetate (DCFH-DA) probe and flow cytometry were used to measure intracellular reactive oxygen species (ROS) level. The effect of melatonin pretreatment on the induced cytotoxicity in GC-1 cells was also studied.
Results
2
BPDE induced cell apoptosis in GC-1 cells in a dose-dependent manner. BPDE treatment also resulted in decrease in the mitochondrial membrane potential
enhancement in the release of cytoplasmic Cyt C from mitochondria
increases in the expression levels of active caspase-9 and -3
and elevation in intracellular ROS level in the GC-1 cells. Furthermore
pretreatment of melatonin significantly inhibited BPDE-induced apoptosis
release of cytoplasmic Cyt C and activation of caspase-9
and activate the Nrf-2/ARE antioxidant pathway and abolished the increase of ROS in GC-1 cells.
Conclusions
2
BPDE induces mitochondria-dependent apoptosis and oxidative stress in GC-1 cells
while melatonin protects the cells in the process.
关键词
Keywords
references
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