通过5 - FU和G-四重复合联体的协同组合逆转L3介导的化学阻力
Anna Di Porzio1, Annalisa Pecoraro1, Camilla Danisi1
1Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
NAR cancer
|December 1, 2025
概括
这项研究结合了5-fluorouracil (5-FU) 与G-quadruplex (G4) 配体,以克服结直肠癌 (CRC) 中的化学抵抗. 这种新的方法选择性地向瘤细胞,减少5-FU剂量并提高治疗效率.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症治疗方法 癌症治疗方法
背景情况:
- 化学抵抗是结直肠癌 (CRC) 治疗的一个主要障碍.
- 核糖体蛋白LU3与化学抵抗和CRC的不良预后有关.
- 基因表达异质性有助于癌细胞在化疗期间的适应性.
研究的目的:
- 研究将5-甲 (5-FU) 与G-四重复 (G4) 连接物结合起来,以克服CRC中L3-介导的化学抵抗.
- 探索G4结构在耐化学反应的CRC细胞中的作用.
- 评估5-FU和G4配体在向耐化学性CRC中的协同效应.
主要方法:
- 在具有不同p53和u3状态的耐化学反应CRC细胞中分析G4结构水平.
- 用5-FU与G4连接体 (pyridostatin [PDS]和RHPS4) 结合治疗CRC细胞.
- 在胚胎模型中使用L3-沉默的CRC细胞衍生的异种移植进行体内验证.
主要成果:
- 耐药的p53缺乏和L3沉默的CRC细胞表现出更高的G4结构水平,表明对G4配体的脆弱性.
- 5FU与PDS或RHPS4的组合显示出协同效应,选择性地向瘤细胞.
- 这种组合策略使5-FU剂量减少了10倍以上,提高了治疗疗效.
- 在体内研究证实了联合治疗的有效性.
结论:
- 使用5-FU和G4配体的新组合策略有效地针对特定CRC亚型的化学抵抗.
- 这种方法对治疗具有非功能性p53和降低L3水平的结直肠癌具有前途.
- 这些发现提供了一种潜在的方法来改善CRC患者的化疗结果.
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