相关实验视频

Updated: Jun 9, 2025

Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research

Author Spotlight: Innovative Techniques for ROS Detection and Implications for Platelet Research

Published on: March 29, 2024

[反应性氧物种对血小板激活和亡的调控]

Biao Yang¹, Li-Li Zhao¹, Jia-Hao DU¹

¹Suzhou Medical College of Soochow University, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Hematology, Suzhou 215006, Jiangsu Province, China.

Zhongguo shi yan xue ye xue za zhi

|October 31, 2024

概括

反应性氧物种 (ROS) 连续驱动血小板激活和亡. 使用N-乙半氨酸 (NAC) 抑制ROS信号有效降低了血小板激活和细胞亡,突出了ROS.

科学领域:

生物化学生化学
细胞生物学细胞生物学
血液学血液学血液学

背景情况:

血小板激活和亡是血液静止和血栓形成中的关键过程.
反应性氧物种 (ROS) 越来越多地被认为是各种细胞功能的信号分子.
ROS在调节血小板激活和细胞亡中的确切作用尚未完全阐明.

研究的目的:

研究反应性氧物种 (ROS) 在血小板激活和亡信号转导中的调节作用.
探索血小板激活和亡之间的关系和顺序顺序.
为了确定ROS抑制对血栓诱导的血小板反应的影响.

主要方法:

血小板用血栓激活或用ROS抑制剂N-乙半氨酸 (NAC) 预处理.
使用流式细胞计量来评估P-选择因表达,αIIbβ3激活,线粒体膜潜力,酸胺外化,ROS产量和血小板聚合.
分析了血栓素和NAC的度和时间依赖的影响.

主要成果:

血栓激素诱导了血小板中的ROS产生,以一种依赖于度和时间的方式.
由ROS介导的血小板激活,包括αIIbβ3激活,P-选择素表达和聚合.
此外,ROS还调解了由凝血素诱导的线粒体膜潜在脱极化和酸胺外部化,这表明了亡.

结论:

ROS首先调节血小板激活,其次是血小板亡,按有序顺序进行.
血小板激活和亡都取决于ROS的产生.
抑制ROS信号传递有效地抑制了血小板激活和亡.

关键词:

活性氧物种;血小板;激活;亡.

更多相关视频

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation

Published on: May 23, 2025

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Published on: November 29, 2024

相关概念视频

Formation of the Platelet Plug

Formation of the Platelet Plug

The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...

Structure and Function of Platelets

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...

Regulation of the Unfolded Protein Response

Regulation of the Unfolded Protein Response

Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...

Regulation of Hematopoietic Stem Cells

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...

The Extrinsic Apoptotic Pathway

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...