整合性单细胞和空间转录基因分析骨髓瘤揭示保存和不同的生态系统跨站点和物种
bioRxiv : the preprint server for biology
|February 6, 2026
概括
这项研究揭示了瘤细胞的保存状态和微环境相互作用在骨髓瘤跨物种. 狗模型非常模仿人类的疾病,突出了纤维肌菌素.
科学领域:
- 瘤学和分子生物学
- 比较基因组学和生物信息学
- 癌症 微环境 研究 研究
背景情况:
- 骨髓瘤是一种高度异质的癌症,患者和瘤细胞的变异性很大.
- 了解复杂的瘤微环境 (TME) 对于开发有效的骨髓瘤疗法至关重要.
- 现有的临床前模型可能无法完全回顾人类骨髓瘤异质性和TME相互作用.
研究的目的:
- 创建和分析一个大规模的,跨物种的单细胞转录组数据集骨髓瘤.
- 在不同物种和解剖部位中识别保存的瘤细胞状态和TME组件.
- 与人类和狗骨髓瘤相比,评估各种骨髓瘤模型 (异种移植,综合性) 的忠实性.
主要方法:
- 编译了一个单细胞转录基因数据集,包含来自人类,狗,PDX和小鼠模型的100多万个细胞/细胞核.
- 进行了严格的多物种对齐和注释,以确定保存的细胞种群和状态.
- 利用空间转录和细胞相互作用分析来绘制TME架构和通信网络的地图.
主要成果:
- 确定了6种沿着分化轨迹保存的瘤细胞转录状态.
- 发现了保存的,但仍是特定于物种和地点的巨细胞,纤维细胞和内皮细胞群.
- 揭示了犬骨肉瘤是基于TME通信忠实性的比小鼠模型更忠实的模型.
- 在肺转移中显示出细胞外矩阵 (ECM) 信号的增加,由瘤衍生的纤维素 (FN1) 驱动,促进殖民.
结论:
- 这种跨物种资源描述了骨髓瘤中保存和分离的TME程序.
- 模型意识分析揭示了关键的瘤与宿主相互作用,强调了模型选择的重要性.
- 治疗策略应解决瘤异质性和支持性转移性利基,特别是ECM信号.
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