蛋白二硫化异构酶1 (PDIA1) 调节了血小板衍生的细胞外囊泡的释放
Agnieszka Pelesz1, Katarzyna Rafa-Zablocka2, Patrycja Kaczara2
1Jagiellonian University, Doctoral School of Exact and Natural Sciences, Krakow, Poland; Jagiellonian University, Jagiellonian Centre for Experimental Therapeutics (JCET), Krakow, Poland.
抑制蛋白二硫化异构酶1 (PDIA1) 提供了一种减少血小板衍生的细胞外囊泡 (pEV) 形成的新方法. 这种方法独立于血小板聚合和信号通路.
科学领域:
- 血液学 血液学 血液学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 蛋白二硫化异构酶1 (PDIA1) 和3 (PDIA3) 是已知的血小板激活和血栓形成的调节者.
- 在生成血小板衍生的细胞外囊泡 (pEVs) 中,PDIA1和PDIA3的特定作用以前没有被阐明.
研究的目的:
- 调查抑制PDIA1和PDIA3对小鼠血小板pEV形成的影响.
- 在血小板糖蛋白VI (GPVI) 受体激活或细胞内信号的条件下检查这些效应.
主要方法:
- 使用或离子体A23187.7激活洗净的小鼠血小板.
- 通过纳米流细胞计分析了pEV形成,测量了血小板聚合,并监测了细胞内水平 ([Ca2+]i).
- 通过使用贝普里斯塔特2a (PDIA1选择性),C-3389 (PDIA1选择性) 和C-3399 (PDIA3选择性) 抑制了血小板二硫化异构酶 (PDI).
主要成果:
- 和A23187都以度依赖的方式诱导了PEV的形成,尽管A23187没有诱导血小板聚合.
- PDIA1和PDIA3抑制剂 (贝普里斯塔特2a,C-3389,C-3399) 减少了发作诱导的PEV释放和[Ca2+]i.
- 只有贝普利斯塔特2a抑制了A23187诱导的PEV释放,而没有影响[Ca2+]i,而康格洛尔和蒂罗菲班抑制了诱导的PEV释放,但没有抑制A23187诱导的释放.
结论:
- 抑制PDIA1为抑制pEV形成提供了一种新的策略.
- 这种抑制机制独立于血小板聚合和细胞内信号通路运作.
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