结合MTA-协作PRMT5抑制剂BMS-986504和KRAS抑制剂是MTAP删除KRAS突变胰腺癌的有效治疗策略
Kristina Drizyte-Miller1, Lars D Engstrom2, Jeffrey A Klomp3
1University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.
Cancer research
|July 22, 2025
概括
蛋白质氨酸甲基转移酶5 (PRMT5) 抑制在MTAP被删除的癌症中显示出前景. 结合PRMT5和KRAS抑制有效向胰腺管道腺癌,增强抗瘤作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 蛋白质氨酸甲基转移酶5 (PRMT5) 是甲基氨酸三酸酶 (MTAP) 删除 (MTAP-del) 癌症中的合成致命标.
- BMS-986504是一种PRMT5抑制剂,在临床前模型和患有MTAP-del癌症的患者中显示出强大的抗瘤活性,与早期抑制剂相比,毒性降低.
研究的目的:
- 调查BMS-986504在胰腺管腺癌 (PDAC) 中的疗效,这种癌症在MTAP-del病例中占有很大比例.
- 探索组合策略,特别是共同准PRMT5和KRAS,以提高MTAP删除PDAC的治疗效果.
主要方法:
- 利用CRISPR/Cas9功能丧失幕来识别潜在的组合疗法.
- 给MTAP-del PDAC细胞和异种移植模型使用BMS-986504.
- 进行RNA测序以分析PRMT5抑制的分子效应.
主要成果:
- 在MTAP-del PDAC模型中,BMS-986504有效抑制了PRMT5的功能和生长.
- 同时抑制PRMT5和KRAS (特别是KRASG12C/D) 导致增强和长时间抑制PDAC生长.
- 抑制PRMT5干扰了关键基因的RNA剪接,影响了PDAC细胞生长途径.
结论:
- 联合抑制PRMT5和KRAS为MTAP删除和KRAS突变PDAC提供了一个有前途的治疗策略.
- 在PDAC中,PRMT5和KRAS抑制汇聚在调节癌细胞生长和基因表达的关键途径上.
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