cellular
• MEFs do not arrest like wild-type and continue to cycle in response to gamma-irradiation or nucleotide pool depletion via PALA, an inhibitor of aspartate transcarbamylase (low G1/S ratio)
(J:64367)
• embryonic fibroblasts from Trp53-deficient mice display a lack of cell cycle arrest upon exposure to increasing doses of ionizing radiation
(J:100189)
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• MEFs do not arrest like wild-type and continue to cycle in response to gamma-irradiation
• less than 1% of thymocytes from irradiated mutants undergo apoptosis compared to 35-60% of wild-type thymocytes
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• MEFs continue to proliferate past the point when normal MEFs undergo replicative senescence
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