The Role of the Proteasome in Platelet Function.

The Role of the Proteasome in Platelet Function.
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蛋白酶体在血小板功能中的作用。

DOI:
10.3390/ijms22083999
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发表时间:
2021-04-13
影响因子:
5.6
通讯作者:
Merhi Y
Merhi Y
中科院分区:
生物学2区
文献类型:
--
作者:
El-Kadiry AE;Merhi Y

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血小板是巨核细胞衍生的无细胞片段,准备通过保持血管完整性来维持初级止血和血栓形成。尽管血小板没有细胞核,但它们含有功能性的基因组介质,通过有限的从头合成蛋白质,以信号特异性的方式增强血小板的活性。此外,尽管血小板的蛋白质合成有限,但它们配备了多种蛋白质降解机制,如蛋白酶体。在有核细胞中,蛋白酶体的功能得到了很好的确立,主要包括蛋白稳定和无数其他信号过程。然而,蛋白酶体介导的蛋白降解在血小板中的作用仍然不清楚。在这篇综述文章中,我们综述了有关蛋白酶体在血小板中的功能的发展文献,讨论了它在血小板活性和功能中的新的调节作用,并强调了它与转录因子NF-κB的功能偶联如何构成一个新的潜在的动脉粥样硬化血栓疾病的治疗靶点。
Platelets are megakaryocyte-derived acellular fragments prepped to maintain primary hemostasis and thrombosis by preserving vascular integrity. Although they lack nuclei, platelets harbor functional genomic mediators that bolster platelet activity in a signal-specific manner by performing limited de novo protein synthesis. Furthermore, despite their limited protein synthesis, platelets are equipped with multiple protein degradation mechanisms, such as the proteasome. In nucleated cells, the functions of the proteasome are well established and primarily include proteostasis among a myriad of other signaling processes. However, the role of proteasome-mediated protein degradation in platelets remains elusive. In this review article, we recapitulate the developing literature on the functions of the proteasome in platelets, discussing its emerging regulatory role in platelet viability and function and highlighting how its functional coupling with the transcription factor NF-κB constitutes a novel potential therapeutic target in atherothrombotic diseases.
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