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- W1987492751 abstract "The pancreatic adenocarcinoma remains the most aggressive human malignancy with an extremely low 5-year overall survival. Postoperative gemcitabine could significantly delay recurrence after complete resection of pancreatic cancer. However, the underlying mechanisms are not fully understood. The chemo-resistance factors against gemcitabine still need further characterizations. Here we studied the mechanism of gemcitabine-induced pancreatic cancer cell death by focusing on mammalian sterile 20-like kinase 1 (MST1) and cyclophilin D (Cyp-D). We found that MST1 and Cyp-D expressions were significantly lower in gemcitabine-resistant pancreatic cancer tissues and cell lines. In vitro, gemcitabine activated MST1 through reactive oxygen species (ROS) production, which was prevented by antioxidant n-acetyl-cysteine (NAC). We found that gemcitabine-activated MST1 translocated to mitochondria and formed a complex with the local protein Cyp-D. Gemcitabine-induced cell death was alleviated by MST1 or Cyp-D shRNA silencing, but was aggravated by MST1 or Cyp-D over-expression. Further, cyclosporin A (CsA), the Cyp-D inhibitor, prevented gemcitabine-induced MST1/Cyp-D mitochondrial complexation and cancer cell death. We suggest that gemcitabine-induced death of pancreatic cancer cells requires MST1/Cyp-D mitochondrial complexation." @default.
- W1987492751 created "2016-06-24" @default.
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- W1987492751 date "2014-08-01" @default.
- W1987492751 modified "2023-10-15" @default.
- W1987492751 title "Gemcitabine-induced pancreatic cancer cell death is associated with MST1/Cyclophilin D mitochondrial complexation" @default.
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- W1987492751 doi "https://doi.org/10.1016/j.biochi.2014.04.004" @default.
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