人类骨转移的泛癌单细胞转录基因图谱
Shuoer Wang1, Fen Ma2, Dongliang Wang3
1Department of Musculoskeletal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Key Laboratory of Genetic Evolution & Animal Models, Chinese Academy of Sciences, Shanghai 200031, China; Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China.
研究人员使用单细胞测序绘制了人类脊髓骨转移的地图,识别了驱动癌症生长的内皮细胞和骨质母细胞等关键细胞. 这揭示了优化骨转移免疫疗法的新目标.
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:
- 骨是癌症传播 (转移) 的常见地点.
- 脊髓骨转移的分子机制尚不清楚.
- 了解BMs对于开发有效的癌症治疗至关重要.
研究的目的:
- 创建人类脊髓骨转移的综合单细胞地图.
- 确定细胞参与者和参与BM发育和进展的分子途径.
- 探索BM的潜在治疗策略,特别是免疫疗法.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在62个人体BM,配对原发性瘤和正常骨髓中进行.
- 无监督聚类分析了癌细胞功能程序和瘤微环境.
- 综合性分析比较了BM数据与大规模的泛癌和健康骨髓scRNA-seq数据集.
- 骨转移的小鼠模型被用于测试联合抗PD-1/TIGIT免疫疗法.
主要成果:
- 鉴定出了三个不同的癌细胞群体,具有不同的预后和微环境.
- 有SELE阳性的内皮细胞,骨质母细胞和骨质母细胞与癌细胞增殖有关.
- 发现了BM丰富的CD8+ T细胞,表达免疫检查点基因.
- 在小鼠模型中,联合抗PD-1/TIGIT治疗抑制了瘤生长并增强了CD8+ T细胞活性.
结论:
- 这项研究提供了人类脊髓骨转移的系统分子视图.
- 已识别的细胞相互作用为改善BM治疗提供了潜在的目标.
- 这些发现支持对骨转移患者免疫疗法优化的进一步研究.
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