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南京医科大学新研究:攻克卵巢癌耐药,联合疗法带来新希望

  • 2026-05-10 12:27:28
南京医科大学新研究:攻克卵巢癌耐药,联合疗法带来新希望

2026415日南京医科大学程文俊和Lin Zhang共同通讯在Science Advances在线发表题为“Multiomics profiling and experiments in preclinical models revealed RAD51-IN-1 as a synergistic potentiator of anlotinib sensitivity”的研究论文。

南京医科大学程文俊与Lin Zhang团队在 Science Advances 发表研究,揭示了卵巢癌对安罗替尼(Anlotinib)耐药的新机制,并提出了通过抑制RAD51介导的同源重组修复(HRR)来逆转耐药的联合治疗策略。

研究背景:安罗替尼的疗效瓶颈

安罗替尼作为多靶点酪氨酸激酶抑制剂,在卵巢癌一线维持治疗中虽有效,但患者个体反应差异极大,耐药是主要临床挑战。此前,其耐药机制缺乏系统研究,特别是DNA修复通路在其中扮演的角色尚不明确。

多组学锁定耐药元凶:DNA修复与Notch通路

研究团队基于临床试验NCT04807166,对18例患者的治疗前肿瘤样本进行了全外显子组和转录组测序,按无进展生存期(PFS)分为敏感组与耐药组:


  • 敏感组特征:富集VEGFR相关突变,这与安罗替尼抗血管生成的作用机制吻合。



  • 耐药组特征:DNA损伤修复通路(特别是同源重组修复HRR)和Notch信号通路被显著激活。这提示肿瘤可能通过增强DNA修复能力来“抵消”药物造成的损伤。


药物筛选:RAD51-IN-1脱颖而出

在体外筛选中,团队测试了安罗替尼与多种通路抑制剂的组合:


  • 强协同效应:RAD51抑制剂(RAD51-IN-1)与安罗替尼的组合表现出极强的协同杀伤作用。



  • 优于Notch抑制:在耐药患者来源的类器官(PDOs)模型中,RAD51-IN-1的增敏效果明显优于Notch抑制剂FLI-06,确立了RAD51作为更优的联合靶点。


机制深挖:阻断“修复后路”,诱发合成致死

研究揭示了“血管抑制 + DNA修复抑制”的合成致死机制:


  1. 安罗替尼的作用:通过抑制VEGFR等靶点,诱导肿瘤细胞复制压力(Replication stress)和DNA损伤。



  2. RAD51-IN-1的助攻:RAD51是HRR通路的关键执行蛋白。抑制RAD51会直接阻断肿瘤细胞修复双链断裂的能力。



  3. 协同效应:安罗替尼“制造”DNA损伤,RAD51-IN-1“阻断”修复通路,导致损伤无法修复,细胞最终走向凋亡。这种机制在HRR高活性的耐药细胞中尤为致命。


临床前验证:高效低毒



  • 体内药效:在小鼠移植瘤模型中,联合用药显著降低了肿瘤负荷,且效果优于单药。



  • 安全性:联合治疗未观察到明显的额外毒性,提示该方案具有较好的治疗窗口。


临床启示与展望

这项研究不仅解释了安罗替尼耐药的分子基础,更提供了直接的转化方案:


  1. 生物标志物:DNA修复通路活性或可成为预测安罗替尼疗效的生物标志物。



  2. 联合治疗新范式:对于HRR通路活跃的耐药卵巢癌患者,“安罗替尼 + RAD51抑制剂”有望成为新的治疗选择。



  3. 研发方向:支持进一步开发RAD51抑制剂在克服TKI耐药方面的临床应用。


该研究通过“临床问题-组学发现-机制验证”的完整闭环,为改善卵巢癌靶向治疗预后提供了强有力的科学依据。

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  1. CONNECT:[ UseTime:0.000364s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000584s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007570s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000643s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000627s ]
  6. SELECT * FROM `set` [ RunTime:0.001969s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000641s ]
  8. SELECT * FROM `article` WHERE `id` = 551464 LIMIT 1 [ RunTime:0.008588s ]
  9. UPDATE `article` SET `lasttime` = 1778411375 WHERE `id` = 551464 [ RunTime:0.008338s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.001204s ]
  11. SELECT * FROM `article` WHERE `id` < 551464 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003809s ]
  12. SELECT * FROM `article` WHERE `id` > 551464 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004742s ]
  13. SELECT * FROM `article` WHERE `id` < 551464 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.134477s ]
  14. SELECT * FROM `article` WHERE `id` < 551464 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.026239s ]
  15. SELECT * FROM `article` WHERE `id` < 551464 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003823s ]
0.282215s