河马通路终端效应器TAZ/WWTR1调解了p53熟练结肠癌细胞中氧化的敏感性
Věra Slaninová1, Lisa Heron-Milhavet1, Mathilde Robin1,2,3
1IRCM, Univ Montpellier, Inserm, ICM, Montpellier, France.
BMC cancer
|May 13, 2024
概括
TAZ是Hippo通路中的一个关键蛋白质,通过促进细胞亡,特别是p53阳性细胞,增强结肠直肠癌细胞对酸化疗的敏感性. 这种效应独立于p73并涉及TAZ核积累.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- YAP和TAZ是Hippo通路的转录性联合激活剂,通常在癌症中升高调节,通常促进瘤发生.
- 然而,YAP/TAZ也可以通过诱导细胞死亡来反对癌症的进展,特别是在化疗后.
- 它们在化疗反应中的作用,特别是在结直肠癌中,仍然很复杂.
研究的目的:
- 调查TAZ在结直肠癌细胞对氧沙的反应中的作用.
- 阐明TAZ介导化学敏感化背后的机制.
- 确定p53状态对TAZ在氧化治疗中的作用的影响.
主要方法:
- 使用HCT116结直肠癌细胞进行药物治疗研究.
- 评估了Hippo通路活动,TAZ定位,以及细胞对氧化的敏感性.
- 在组合治疗中使用了针对YAP/TAZ活性的药物 (Verteporfin,CA3).
- 检查了p53在TAZ介导的多种结直肠癌细胞系中oxaliplatin敏感化的作用.
主要成果:
- 氧化治疗降低了Hippo通路的调节,并在HCT116细胞中诱导TAZ的核积累.
- 塔兹核转移对于增加氧化敏感性至关重要,独立于p73.
- 抑制YAP/TAZ的药物对抗氧沙的作用.
- TAZ对氧沙的敏感作用取决于癌细胞的p53状态.
结论:
- 核TAZ使结直肠癌细胞对氧沙素敏感,以p53依赖的方式促进亡.
- 这表明TAZ在调解DNA损伤反应和化疗诱导的细胞死亡方面发挥了早期作用.
- 向TAZ可能是一个治疗策略,以提高oxaliplatin在结直肠癌中的疗效.
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