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Hypoxia induces apoptosis of mouse spermatocyte GC-2 cells through activation of autophagy.
Cell Biology International 2018 April 17
The aim of this study was to investigate the underlying mechanisms of hypoxia-induced apoptosis of GC-2spd (GC-2) cells. The GC-2 cells were treated with or without hypoxia for 12, 24, 48, and 72 h. Apoptosis of GC-2 cells was detected using TUNEL and flow cytometry. Fluorescence microscopic was used to observe the autophagy of GC-2 cells. Hypoxia-inducible factor-1alpha (HIF-1α), apoptosis-related protein and marker protein of autophagy levels were measured by Western blotting. Hypoxia induced apoptosis and autophagy of GC-2 cells, and increased expression of HIF-1α, LC3-II, Beclin-1, and pro-apoptotic protein, but reduced p62 and anti-apoptotic protein level. Meanwhile, hypoxia-induced HIF-1α mediated expression of apoptosis and autophagy-related protein in GC-2 cell. Furthermore, autophagy regulated hypoxia-induced apoptosis of GC-2 cell. Our data suggest that hypoxia induces apoptosis of GC-2 cell by activation of autophagy involving activation of the apoptosis signaling pathway under the hypoxic condition.
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