共同向SRC克服了结直肠癌中对BRAF抑制剂的耐药性
Beatriz Rubio-Cuesta1,2, Carlos Carretero-Puche1,2, Patricia Llamas1,2
1Centro de Oncología Experimental. Grupo de Investigación en Tumores Gastrointestinales y Neuroendocrinos. Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.
British journal of cancer
|June 6, 2025
概括
在结直肠癌 (CRC) 中,SRC是BRAF抑制剂耐药性的关键媒介. 与BRAF一起针对SRC提供了一种协同方法,以改善CRC治疗结果.
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:
- BRAF V600E突变存在于~10%的结直肠癌 (CRC) 病例中,与预后不佳有关.
- 针对BRAF的向治疗 (BRAFi) 在长期慢性肺癌中基本上无效;添加EGFR抑制剂 (EGFRi) 提高了疗效,但患者的存活率仍然不够理想.
- 在BRAF V600E CRC中,SRC作为抵抗BRAFi的媒介被探索.
研究的目的:
- 研究SRC作为BRAF V600E结直肠癌 (CRC) 中对BRAF抑制剂 (BRAFi) 耐药性的关键调解剂.
- 评估SRC作为一种潜在的治疗点,以克服CRC中的BRAFi抵抗.
主要方法:
- 在BRAF突变和野生型CRC细胞系中利用CRISPR/Cas9淘汰和病毒过度表达来研究SRC.
- 评估了SRC,BRAF,EGFR和JNK向药物对细胞活力,增殖,迁移,细胞亡和细胞循环的影响.
- 已建立的CRC细胞系衍生异种移植 (CDX) 和患者衍生异种移植 (PDX) 模型用于体内验证.
主要成果:
- 通过调节BRAF V600E CRC中的BRAFi耐药性,SRC调节了繁殖,克隆性和迁移.
- SRC 耗尽或抑制对 BRAFi 敏感的 CRC 细胞.
- 联合SRC和BRAF抑制显示出协同作用的抗瘤效应,降低活力,诱导细胞线和PDXs中的细胞亡和细胞周期停止.
- 抑制JNK/c-Jun通路增强了双重SRC和BRAF抑制的有效性.
结论:
- 在BRAF V600E CRC中,SRC被确定为克服BRAFi抗性的关键治疗标.
- 结合SRC和BRAF抑制,可能与JNK通路向,为这种高风险的CRC亚组提供了一个有希望的策略.
- 这些发现支持开发新的临床试验,以改善BRAF V600E CRC.患者的治疗结果.
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