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- W2011000970 abstract "The retinoblastoma tumor-suppressor protein (RB) is an important regulator of cell cycle and apoptosis. RB is phosphorylated by cyclin-dependent protein kinase during cell cycle progression. A phosphorylation site mutated (PSM)-RB has previously been shown to cause G1 arrest and to interfere with S phase progression. In this study, we examined the effect of inducible PSM-RB expression on the apoptotic response to three different death stimuli: doxorubicin (DOXO), staurosporine (STS) and tumor necrosis factor (TNF) in Rat-16 cells. Induced expression of PSM-RB attenuated caspase activation by DOXO as a result of cell cycle arrest. STS has been shown to cause RB-dependent G1 arrest or apoptosis; however, expression of PSM-RB did not prevent caspase activation by STS. Surprisingly, induced expression of PSM-RB stimulated the apoptotic response to TNF in Rat-16 cells, which mostly undergo necrosis in the absence of PSM-RB. These results show that PSM-RB exerts disparate effects on apoptotic response to different stimuli, and that cell cycle arrest does not always associate with resistance to apoptosis." @default.
- W2011000970 created "2016-06-24" @default.
- W2011000970 creator A5022809804 @default.
- W2011000970 creator A5052698739 @default.
- W2011000970 date "2005-10-03" @default.
- W2011000970 modified "2023-09-25" @default.
- W2011000970 title "Phosphorylation site mutated RB exerts contrasting effects on apoptotic response to different stimuli" @default.
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- W2011000970 doi "https://doi.org/10.1038/sj.onc.1209161" @default.
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