剖析信号调节器驱动AXL介导的绕行电阻和相关的表型由酸盐扰动
Marc Creixell1, Scott D Taylor1, Jacqueline Gerritsen2
1Department of Bioengineering, University of California Los Angeles; Jonsson Comprehensive Cancer Center, University of California Los Angeles.
bioRxiv : the preprint server for biology
|November 14, 2023
概括
在癌症治疗中,通过理解AXL受体氨酸激酶 (RTK) 信号传导,可以克服药物耐药性. 这项研究确定了AXL用于驱动肺癌耐药性的关键途径,并确定了潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 受体氨酸激酶 (RTK) 向治疗由于获得的耐药性而面临限制.
- 过度表达AXL受体氨酸激酶 (RTK) 与耐药性有关,驱动细胞存活率和恶性表型,如上皮细胞转化为介质细胞转化 (EMT).
- 特定的信号分子和途径调解AXL在抵抗中的作用仍然在很大程度上是未知的.
研究的目的:
- 阐明AXL有助于肺腺癌药物耐药性的信号通路.
- 将特定的AXL信号干扰映射到不同的耐药表型.
- 为了确定针对AXL介导的抗性潜在的治疗策略.
主要方法:
- 产生了一组突变性肺腺癌PC9细胞系,具有特定的AXL细胞内氨酸残留突变.
- 综合酸化信号数据与表型变化使用多变量建模.
- 利用高通量激酶特异性分析并分析下游信号相互作用.
主要成果:
- AXL信号被分为两个与疾病进展和不良临床结果相关的集群.
- 这些群体对达沙替尼表现出敏感性,并涉及Abl1和SFK动机.
- 发现AXL通过FAK1激活了SFK集群,将其与EMT介导的erlotinib耐药性联系起来.
- 确定了AXL和YAP之间的积极反循环,维持耐药性持续细胞.
结论:
- 通过特定的分子通路,AXL信号传递在推动肺癌中埃洛提尼布耐药性方面发挥着关键作用.
- 了解AXL介导的信号提供了对获得药物耐药性的机制的洞察.
- 这项研究强调了AXL及其下游效应因子作为克服肺癌抵抗力的潜在治疗标.
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