![]() ![]() The effects of DIRAS3 and p53 re-expression on Akt phosphorylation, oncogene expression, and the interaction of 4E-BP1 with eIF4E were determined by real-time PCR, Western blotting and immunoprecipitation analysis. The effects of DIRAS3 and p53 re-expression on the growth and apoptosis of HNSCC cells were examined by TUNEL assay, flow cytometric analysis and MTT. MethodsĬAL-27 and SCC-25 cells were treated with Ad-DIRAS3 and rAd-p53 to induce re-expression of DIRAS3 and p53 respectively. In this study, we sought to determine whether the concurrent re-expression of p53 and DIRAS3 could effectively induce head and neck squamous cell carcinoma (HNSCC) cell death. P53 and DIRAS3 are tumor suppressors that are frequently silenced in tumors.
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