对化学疗法诱导的骨髓瘤瘤微环境重塑的单细胞转录基因洞察
Xuejing Zheng1, Wence Wu2, Zhenguo Zhao1
1Departments of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Nanli, Panjiayuan, Chaoyang District, Beijing, 100021, China.
Journal of cancer research and clinical oncology
|July 20, 2024
概括
在骨髓瘤 (OS) 中的新辅助化疗促进癌症干和改变瘤微环境 (TME). 这种治疗减少了抗瘤免疫细胞,影响治疗效果,并可能导致抗药性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
背景情况:
- 新辅助化疗是骨髓瘤 (OS) 的标准治疗方法.
- 了解化疗对瘤微环境 (TME) 的影响对于改善治疗结果至关重要.
- 化疗不仅影响癌细胞,还影响瘤内的免疫和 stromal 组件.
研究的目的:
- 研究新辅助化疗对骨髓瘤瘤微环境中的细胞组成和基因表达的影响.
- 在晚期骨髓瘤中鉴定化疗诱导的特定细胞和分子变化.
主要方法:
- 单细胞RNA测序用于分析瘤样本.
- 在接受新辅助化疗之前和之后,从患有晚期骨髓瘤的患者中采集了样本.
主要成果:
- 化疗增加了剩余的骨髓瘤细胞中的干性基因表达.
- 观察到癌症相关纤维细胞的增加,增强了细胞外矩阵 (ECM) 修饰.
- 内皮细胞数量增加,但它们的分化能力受损.
- 免疫细胞种群的显著减少,包括髓状细胞和T/NK细胞,特别是具有抗瘤功能的细胞.
结论:
- 化疗严重改变骨髓瘤TME,影响癌细胞的行为和免疫监测.
- 这些变化提供了关于骨髓瘤治疗耐药性机制的见解.
- 这些发现可能会指导开发针对晚期骨髓瘤的新疗法策略.
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