被TGF-β1触发的不适应性骨髓内皮阻碍了造血细胞的恢复
Zhong-Shi Lyu1,2, Meng-Zhu Shen1, Yuan-Ya Zhang3
1Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Cell and Gene Therapy for Hematologic Malignancies, Peking University, Beijing, China.
Signal transduction and targeted therapy
|October 6, 2025
概括
通过TGF-β1信号传导转化骨髓内皮细胞 (BMEC) 驱动不适应性修复,损害了造血支持. 抑制TGF-β1通路对患者的造血再生有希望.
科学领域:
- 血液学 血液学 血液学
- 细胞生物学 细胞生物学
- 血管生物学 血管生物学
背景情况:
- 骨髓中的内皮细胞 (ECs) 对于造血干细胞调节至关重要.
- 在血液病和治疗中发生BM EC的破坏,导致血液形成支持受损.
- 慢性压力信号可能导致不适应性EC修复,以纤维性重编程和功能丧失为特征.
研究的目的:
- 定义TGF-β1在驱动骨髓EC不适应性中的作用.
- 调查TGF-β1诱导的不适应性EC修复背后的机制.
- 探索针对TGF-β1进行造血再生的治疗策略.
主要方法:
- 在体外实验和小鼠模型中的BM EC特异性TGF-βRI过度表达.
- 多种组分分析 (转录组分和蛋白组分分析).
- 来自不良移植功能 (PGF) 患者的BM ECs的分析以及使用luspatercept的临床研究.
主要成果:
- TGF-β1激活驱动不适应的BM ECs,导致血管再生缺陷和血液形成支持受损.
- TGF-β1诱导了分泌物转移,抑制了造血因子,并通过潜在的VEGFR/Notch/p38α信号来调节上升的上皮细胞-介质细胞过渡介质.
- 来自PGF患者的BM EC显示TGF-β1信号过活化;TGF-β1抑制恢复了它们的功能.
结论:
- TGF-β1是骨髓EC不适应的一个关键驱动因素.
- 向TGF-β1通路提供了一种通过BM EC重塑进行造血细胞再生的治疗策略.
- 卢斯帕特塞普特是一种TGF-β连结体陷,在移植后的患者中促进了多系血型形成的恢复.
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