A novel DNA damage-induced alternative splicing pathway that regulates p53 and cellular senescence markers
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Irreversible cellular senescence induced by prolonged exposure to H2O2 involves DNA-damage-and-repair genes and telomere shortening.
H2O2 has been the most commonly used inducer for stress-induced premature senescence (SIPS), which shares features of replicative senescence. However, there is still uncertainty whether SIPS and replicative senescence differ or utilize different pathways. 'Young' human diploid fibroblasts (HDFs), treated with prolonged low doses of hydrogen peroxide, led to irreversible cellular senescence. Cel...
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ownload PIM family of serine threonine protein kinases plays an important role in regulating both the growth and rmation of malignant cells. However, in a cell line–dependent manner, overexpression of PIM1 can t cell and tumor growth. In 22Rv1 human prostate cells, but not in Du145 or RWPE-2, PIM1 oversion was associated with marked increases in cellular senescence, as shown by changes in the l...
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Cell fate regulation is an open problem whose comprehension impacts several areas of the biosciences. DNA damage induces cell cycle checkpoints that activate the p53 pathway to regulate cell fate mechanisms such as apoptosis or senescence. Experiments with different cell types show that the p53 pathway regulates cell fate through a switch behavior in its dynamics. For low DNA damage the pathway...
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