在 JAK2V617F 骨髓增殖性新生体与状静脉血栓形成的内皮损伤中
Blanca De Moner1,2,3, Julia Martinez-Sanchez1,3, Marta Garrote4
1Hemostasis and Erythropathology Laboratory, Hematopathology, Pathology Department, Centre de Diagnòstic Biomèdic (CDB), Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.
Thrombosis and haemostasis
|January 14, 2025
概括
脊柱静脉血栓症 (SVT) 的骨髓增殖性新生瘤 (MPN) 中的循环因子激活内皮细胞,促进炎症和血栓形成. MPN 治疗可以调节这些效应.
科学领域:
- 血液学 血液学 血液学
- 血管生物学 血管生物学
- 在瘤学瘤学.
背景情况:
- 转变为JAK2V617F的骨髓增殖性瘤 (MPN) 与血栓形成风险增加有关,特别是静脉血栓形成 (SVT).
- 内皮在MPN相关的前血栓状况中的作用需要进一步研究.
研究的目的:
- 探索内皮细胞 (ECs) 对MPN患者前质表型的贡献.
- 评估MPN患者血清对内皮细胞功能的影响,并确定内皮激活的循环标志物.
主要方法:
- 内皮细胞暴露于MPN患者的血清,包括有或没有血栓形成的患者和健康对照者.
- 评估了炎症标志物 (VCAM-1,ICAM-1),细胞透性 (VE-cadherin),VWF产生和细胞内信号通路 (Akt,p44/42,IkBa,JAK2/STAT3) 的变化.
- 在患者血中测量了内皮细胞激活和损伤的循环标志物.
主要成果:
- 患者的MPN血清诱导了EC的炎症和血栓性表型,其特征是增加VCAM-1,ICAM-1和VWF的产生,并减少了VE-cadherin.
- 观察到增强的血小板粘附和细胞内信号通路的激活.
- 在患有血栓形成的MPN患者中发现了VWF,TNF-R1,VCAM-1,血栓模块素和血管蛋白-2的血水平升高.
结论:
- 患有SVT初发症的MPN患者的循环因子会诱导内皮前炎和前血栓表型.
- MPN 治疗似乎可以调节 *in vitro* 观察到的这些内皮细胞变化.
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