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在ROS1融合阳性癌症中,TKI类型切换克服了ROS1 L2086F

Rajat Thawani¹, Matteo Repetto², Clare Keddy³

¹Section of Hematology/Oncology, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA.

NPJ precision oncology

|August 8, 2024

概括

新的氨酸激酶抑制剂 (TKIs) 对具有抗性突变的ROS1阳性肺癌具有前景. 像卡博赞提尼布这样的II型TKI对L2086F突变是有效的,提供了新的治疗途径.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
药理学药理学是指药理学的学科.

背景情况:

氨酸激酶抑制剂 (TKI) 对ROS1阳性非小细胞肺癌 (NSCLC) 具有至关重要的作用.
耐药性突变的出现,如L2086F,限制了TKI的有效性.
了解针对特定ROS1突变的TKI活性对于治疗策略至关重要.

研究的目的:

评估各种TKI对野生型和L2086F突变ROS1.1的活性.
为了比较I型和II型TKI,以及吉尔特里尼布,与ROS1突变.
调查TKI对L2086F突变的疗效的结构基础.

主要方法:

使用的细胞模型 (Ba/F3,NIH3T3) 和CRISPR/Cas9编辑的细胞系.
在体内进行了瘤生长研究.
进行了与ROS1突变体结合的TKI的结构分析.

主要成果:

与I型TKIs不同的是,II型TKIs (cabozantinib,merestinib) 对ROS1 L2086F保持了活性.
吉尔特里尼布抑制了野生型和L2086F突变ROS1,但不是G2032R.
结构数据解释了卡博桑提尼布和吉尔特里尼布对L2086F的疗效.

结论:

卡博桑提尼布证明了对TKI耐药ROS1 L2086FNSCLC的有效性.
需要更有选择性的技术知识,以克服阻力和提高耐受性.
吉尔特里尼布为ROS1 L2086F.提供了一个潜在的替代品,具有明显的毒性概况.

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