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• W2950765897 abstract "B-cell lymphoma 2 (Bcl-2) has a dual function, acting as both an oncogene and an anti-tumor gene. It is well known that Bcl-2 exerts its tumor promoting function through the mitochondrial pathway. However, the mechanism by which it suppresses tumor formation is not well understood. We have previously shown that Bcl-2 inhibits cell cycle progression from the G0/G1 to the S phase after serum starvation, and that quiescent Bcl-2 expressing cells maintain a significantly lower level of mitochondrial reactive oxygen species (ROS) than control cells. Based on the fact that ROS mediate cell cycle progression and are controlled by peroxisome proliferator-activated receptor-γ co-activator 1α (PGC-1α), a key molecule induced by prolonged starvation and involved in mitochondrial metabolism, we hypothesized that PGC-1α might be related to the cell cycle function of Bcl-2. In this paper, we show that PGC-1α is upregulated by Bcl-2 overexpression and downregulated following Bcl-2 knockdown or downregulation after serum starvation. However, Bcl-2 is negatively regulated by PGC-1α expression. Further, co-immunoprecipitation (co-IP) experiments showed that PGC-1α protein is co-precipitated with Bcl-2 at the G0/G1 phase. Taken together, our results suggest that PGC-1α interacts with Bcl-2 after serum depletion, and that Bcl-2 might recruit PGC-1α to reduce ROS, which in turn delays cell cycle progression in coordination with Bcl-2." @default.
• W2950765897 created "2019-06-27" @default.
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• W2950765897 date "2018-06-01" @default.
• W2950765897 modified "2023-10-16" @default.
• W2950765897 title "PGC-1α coordinates with Bcl-2 to control the cell cycle in U251 cells through reducing ROS" @default.
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• W2950765897 doi "https://doi.org/10.1631/jzus.b1700148" @default.
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