Pifithrin-α (PFT-α)是一种常用的p53抑制剂，可逆性抑制p53依赖性的基因转录活性如细胞周期蛋白G、p21/waf1/cipl和mdm2蛋白的表达。Pifithrin-α不仅抑制p53介导的由细胞毒素诱导的细胞凋亡，还能抑制DNA损伤诱导的细胞凋亡。Pifithrin-α作用于海马细胞，并降低p53-DNA结合活性水平、抑制caspase活化。Pifithrin-α诱导细胞周期阻断，并显著降低DNA合成。另外，与化疗或放射性共同处理癌症时，Pifithrin-α会减轻化疗或放射性对正常组织的副作用。

参考文献

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