抑制蛋白酶体活性可以提高在扩散性形威尔姆斯瘤中对阿克丁诺米辛D的敏感性
Patricia D B Tiburcio1, Kenian Chen2, Lin Xu3
1Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Cell reports. Medicine
|May 10, 2025
概括
威尔姆斯瘤细胞通过增加蛋白质生产来抵抗化疗. 结合蛋白质合成和分解抑制剂显示出治疗这种儿科脏癌症的前景.
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:
- 威尔姆斯瘤是最常见的儿科癌.
- 扩散性厌塑性威尔姆斯瘤是一种高度耐化学物质的亚型.
- 乙基诺D化疗抑制了核糖体RNA生物发生,这对蛋白质合成至关重要.
研究的目的:
- 为了研究威尔姆斯瘤细胞躲避actinomycin D化疗的机制.
- 确定治疗策略,以克服形威尔姆斯瘤中抗化学性.
- 探索蛋白质平衡在威尔姆斯瘤增殖和预后中的作用.
主要方法:
- 核糖体造型,以评估蛋白质翻译.
- 蛋白质阵列用于分析蛋白质表达.
- 全基因组的淘汰屏幕用于识别抵抗机制.
- 在体外药物敏感性测定.
- 在体内异种移植模型来评估治疗疗效.
主要成果:
- 在威尔姆斯瘤细胞中,Actinomycin D破坏了蛋白质平衡和细胞循环进展.
- 无塑性威尔姆斯瘤细胞在行为胺D应激下优先转化蛋白酶组分.
- 蛋白质酶抑制剂博尔特佐米布使威尔姆斯瘤细胞对D.阿克丁诺米辛产生敏感性.
- 在临床前模型中, bortezomib 治疗延长了生存时间.
- 蛋白酶组分水平升高与患者的形组织学和不良预后相关.
结论:
- 维持蛋白质平衡对于威尔姆斯瘤细胞增殖至关重要.
- 针对蛋白质合成和蛋白质降解途径提供了一个潜在的治疗策略.
- 旨在破坏蛋白质平衡的治疗策略可以克服威尔姆斯瘤中的化学抵抗.
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