在非小细胞肺癌中,CLIP1-LTK融合是致癌因素
Hiroki Izumi1, Shingo Matsumoto1, Jie Liu2
1Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Japan.
Nature
|November 25, 2021
概括
研究人员在非小细胞肺癌 (NSCLC) 中发现了一种新的CLIP1-LTK融合. 对于缺乏其他已知的驱动因素的NSCLC患者来说,这种融合是可针对性的.
科学领域:
- 癌症学
- 分子生物学
- 基因组学
背景情况:
- 非小细胞肺癌 (NSCLC) 的治疗正在通过向疗法得到改善.
- 然而,很大一部分肺腺癌病例缺乏已知的致癌驱动因素.
- 这凸显了NSCLC新型治疗点的必要性.
研究的目的:
- 为了确定NSCLC的新型致癌驱动因素.
- 研究针对已识别的融合的治疗潜力.
- 评估洛拉提尼布对新型NSCLC的疗效.
主要方法:
- 使用多机构基因组选平台进行全转录组测序.
- 确定并描述了CLIP1-LTK的融合.
- 在Ba/ F3细胞中进行了功能测试,并分析了患者病例研究.
主要成果:
- 在0. 4%的NSCLC中发现了一种新的CLIP1- LTK融合转录,与已知的驱动因素相互排斥.
- CLIP1-LTK融合蛋白具有构成性激酶活性和转化潜力.
- 在试验室中,洛拉提尼布有效抑制了CLIP1- LTK的活性,抑制了细胞的增殖和诱导了细胞亡.
- 一名患有CLIP1- LTK融合的NSCLC患者对洛拉提尼布反应良好.
结论:
- 在NSCLC中,CLIP1- LTK融合是新发现的致癌因子.
- 这种融合是癌症中首次描述的具有致癌活性的LTK变异.
- 合CLIP1- LTK是NSCLC的潜在治疗点,可以用lorlatinib治疗.
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