p53 expression in the vhl?/?; vll?/? double mutants is downregulated in comparison to that in their siblings. (A and B) Embryos from vhl+/?; vll?/? pair mating were collected and irradiated at 2dpf with ?-ray at a dose of 20 gray. q-PCR was performed 24 hours post ?-ray to quantify the full length of p53 and short form of ?113p53. This revealed that there was a significant decrease in both forms of p53 expression in the vhl?/?; vll?/? embryos in comparison to their siblings. ****p < 0.0001, two way ANOVA test. The statistical analysis was performed with ddCt values. (C) We also treated embryos from vhl+/?; vll?/? incross with 10 nM CPT and both isoforms of p53 induction was examined in the vhl?/?; vll?/? embryos and in their siblings by Western blot. After treatment, there was a clear reduction in both isoforms of p53 expression in the vhl?/?; vll?/? embryos in comparison to their siblings.
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