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在小鼠中,低低的tristetraprolin表达激活了表型可塑性,并阻止过渡到致命的前列腺癌
Katherine L Morel1, Beatriz Germán2,3,4,5, Anis A Hamid6,7
1South Australian Immunogenomics Cancer Institute, University of Adelaide, Adelaide, South Australia, Australia.
The Journal of clinical investigation
|November 19, 2024
概括
丢失的tristetraprolin (ZFP36) 驱动前列腺癌 (PCa) 通过激活NF-κB.通过激活NF-κB.驱动前列腺癌 (PCa) 的攻击性和耐治疗性. 与PTEN共同损失加速了割抵抗,但NF-κB抑制提供了一个治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 现型可塑性是癌症抗疗能力的关键驱动因素.
- 基受体向治疗 (AR向治疗) 是前列腺癌 (PCa) 的标准治疗方法.
- 了解耐药机制对于改善PCa治疗结果至关重要.
研究的目的:
- 为了调查tristetraprolin (TTP;ZFP36) 损失在PCa进展和抵抗中的作用.
- 确定ZFP36损失,特别是与PTEN损失相结合,对PCa攻击性的影响.
- 为了确定治疗策略,针对由ZFP36损失驱动的机制.
主要方法:
- 对临床PCa队列的分析,以将ZFP36和PTEN损失与复发风险相关联.
- 在体内研究工程前列腺特异性Zfp36删除和Pten代选择.
- 基因组丰富分析以确定改变的细胞通路.
- 在ZFP36/PTEN共同损失瘤中对NF-κB抑制剂 (DMAPT) 的体内测试.
主要成果:
- 丧失ZFP36与NF-κB激活增加,侵袭性疾病和PCa早期复发有关.
- 在PCa患者中,PTEN和ZFP36的共同损失显著增加了复发风险.
- 在体内,Zfp36的删除与Pten的共删除导致了快速进展到割抵抗性腺癌.
- ZFP36的丧失促进了上皮-介质细胞过渡 (EMT),炎症和单核细胞迁移途径.
- 用DMAPT抑制NF-κB在相关模型中显示了治疗反应和逆转割抵抗.
结论:
- ZFP36的损失是PCa的攻击性和抗AR向疗法的关键驱动因素.
- PTEN和ZFP36损失的组合加快了PCa向割抵抗的进展.
- 针对NF-κB通路,为PCa与ZFP36/PTEN共同损失提供了一个有前途的治疗策略.
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