炎症性T细胞-轴有助于造血干细胞/原始细胞衰竭和人类骨髓质疏松综合征中的克隆进化
Lanpeng Chen1, Yujie Bian1, Eline Pronk1
1Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.
Nature communications
|November 18, 2025
概括
骨髓微环境中的炎症驱动了骨髓显形综合征 (MDS) 的进展. 激活的T细胞促进这种炎症,使突变干细胞具有生存优势,并导致白血病的演变.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- 骨髓发育综合征 (MDS) 涉及骨髓衰竭,克隆进化和白血病进展,其潜在机制尚不清楚.
- 骨髓微环境和免疫系统在MDS病原发生中的作用需要进一步阐明.
研究的目的:
- 建立人类MDS的单细胞转录分类学.
- 为了研究骨髓结构和免疫细胞在MDS病理生理学中的作用.
- 了解驱动MDS中克隆进化和白血病进展的机制.
主要方法:
- 人类MDS样本的综合单细胞RNA测序.
- 分析骨髓 stromal 利基和造血干细胞/原生细胞 (HSPC) 的转录状态.
- 研究免疫细胞子集,特别是CD8-T细胞及其信号通路 (例如TNF受体).
主要成果:
- 骨髓 stromal 的炎症重塑是MDS的一个早期特征,独立于遗传驱动因素.
- 激活的CD8-T细胞通过TNF受体信号传递驱动 stromal 炎症,损害正常的HSPC功能.
- 突变的HSPCs对炎症性压力具有抵抗力,并在炎症性微环境中具有竞争优势.
- 侧向性炎症与白血病进展风险增加和患者存活时间减少有关.
结论:
- 免疫性炎症信号传递是骨髓衰竭和MDS中的克隆进化的一个关键驱动因素.
- 骨髓微环境,特别是肌层炎症,在骨髓瘤中对克隆选择和白血病进化起着至关重要的作用.
- 准免疫和 stromal 相互作用可能为MDS提供治疗策略.
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