缺乏Sox10的耐药黑色素瘤细胞对瘤性RNA病毒具有耐火性
John Abou-Hamad1,2, Jonathan J Hodgins1,3, Edward Yakubovich1,2
1Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON K1H 8L6, Canada.
Cells
|January 11, 2024
概括
黑色素瘤的耐药性阻碍了结性病毒疗法. 抗性黑色素瘤细胞中SOX10的损失会损害病毒感染,这表明一种新的抗性途径涉及干扰素刺激的基因.
科学领域:
- 在瘤学瘤学.
- 病毒学 病毒学
- 分子生物学分子生物学
背景情况:
- 针对性治疗的耐药性是黑色素瘤治疗的一个主要挑战,往往导致对其他疗法的交叉耐药性.
- 药物耐药性,表观遗传重编程和黑色素瘤中对型病毒的敏感性之间的相互作用尚未完全理解.
研究的目的:
- 研究向疗法耐药性对瘤结合型病毒疗法和向治疗在黑色素瘤中的疗效的影响.
- 阐明在耐药黑色素瘤中潜在的抗瘤病毒交叉抗性的机制.
主要方法:
- 在黑色素瘤模型中,与BRAF抑制剂 (MAPKi) 和基于膀性口腔炎病毒 (VSV) 的球性病毒的同时治疗实验.
- 对获得了对vemurafenib耐药性的黑色素瘤细胞系的分析,包括那些具有SOX10损失的细胞系.
- RNA测序 (RNA-seq) 用于分析基因表达特征,重点关注干扰素刺激基因 (ISG).
主要成果:
- 联合MAPK抑制剂 (MAPKi) 和型病毒治疗没有显示出协同作用;MAPKis抑制了病毒感染.
- 耐韦穆拉菲尼布的黑色素瘤细胞对瘤病毒的敏感性降低.
- 黑色素瘤标记物SOX10的损失,通过抑制病毒感染和复制,诱导了对瘤病毒的交叉抵抗.
- 缺乏SOX10和耐药性黑色素瘤细胞显示高调节的干扰素刺激基因 (ISG),独立于I型干扰素的产生.
结论:
- 在黑色素瘤中,获得了针对性治疗的耐药性,特别是通过SOX10损失,使得对型病毒治疗产生耐药性.
- 独立于I型IFN的ISG的升级,与这种瘤性耐药性途径有关.
- 向疗法可能会通过干扰病毒感染来阻碍黑色素瘤瘤性病毒疗法的疗效.
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