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由多种耐药性状态塑造的克隆动态在黑色素瘤耐药性持续状态中存在
Haiyin Li1, Yeqing Chen1, Jessica Kaster1
1The Wistar Institute, Philadelphia, PA, USA.
bioRxiv : the preprint server for biology
|September 26, 2025
概括
耐药黑色素瘤细胞通过进入可逆状态来抵抗向治疗. 一个新的平台MeRLin,跟踪这些持久细胞,揭示适应性抵抗机制和未来治疗的潜在漏洞.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 基因组学就是基因组学.
背景情况:
- 晚期黑色素瘤通常在针对性治疗的初始反应后复发.
- 黑色素瘤的耐疗性通常是由耐药性持续细胞驱动的,而不是新的突变.
- 这些持久细胞进入可逆性,抗药性状态,使治疗结果复杂化.
研究的目的:
- 开发和使用一个高分辨率的平台,MeRLin,用于跟踪治疗期间黑色素瘤的克隆和转录动态.
- 研究适应性抵抗的机制,并确定持续性黑色素瘤群体中关键细胞状态.
- 在长期治疗下,在黑色素瘤模型中空间地绘制克隆进化和基因表达.
主要方法:
- 开发MeRLin:一个整合细胞条形码,单细胞转录组学和RNA光 in situ杂交 (FISH) 的平台.
- 应用MeRLin患者衍生的黑色素瘤模型进行长期向治疗.
- 对克隆动态,转录状态和持久细胞的空间组织进行计算分析.
主要成果:
- 持久性亚群最初对治疗有反应,但持续和扩大,导致瘤复发.
- 在治疗前,黑色素瘤细胞多样化为四种与适应性抵抗 (压力,脂质代谢,PI3K信号传递,ECM重塑) 相关的保存持续状态.
- 空间转录组学和条形码RNA-FISH揭示了适应程序的实地组织和具有SLC2A1表达的耐药克隆的同定位.
结论:
- MeRLin为剖析癌细胞异质性和适应性抵抗机制提供了一个强大的框架.
- 了解持久性细胞动态及其相关的转录状态对于克服黑色素瘤治疗失败至关重要.
- 识别特定的持续状态和信号网络为准黑色素瘤复发提供了潜在的治疗漏洞.
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