相关实验视频

Updated: Jul 13, 2025

Tail Vein Transection Bleeding Model in Fully Anesthetized Hemophilia A Mice

Tail Vein Transection Bleeding Model in Fully Anesthetized Hemophilia A Mice

Published on: September 30, 2021

分子动力学模拟研究对凝血因子IXa对因子XA的选择性抑制

Hyun Jung Yoon¹, Sibsankar Kundu², Sangwook Wu^1,2

¹Department of Physics, Pukyong National University, Busan 48513, Republic of Korea.

Molecules (Basel, Switzerland)

|October 14, 2023

概括

为凝血因子IXa (FIXa) 设计选择性抑制剂是具有挑战性的,因为与因子Xa (FXa) 有相似之处. 分子动力学模拟揭示了关键相互作用,如与D189和A190的键,对于FIXa选择性和更紧密的连接体结合至关重要.

科学领域:

生物化学生物化学
药理学药理学是指药理学的学科.
计算生物学计算生物学

背景情况:

血栓塞栓性疾病是一个主要的健康问题,目前的抗凝固剂向XA因子 (FXa) 有出血风险.
凝血因子IXa (FIXa) 是抗凝血剂的一个有希望的替代点,因为它在内在途径中的作用.
设计选择性FIXa抑制剂是困难的,因为与FXa.Xa的结构和功能相似.

研究的目的:

分析蛋白质-连接体相互作用的动态行为,以了解FIXa和FXa之间的选择性.
确定为FIXa抑制剂赋予选择性的关键分子相互作用.
为开发更安全,更有效的抗凝固疗法提供见解.

主要方法:

蛋白质-连接体复合体的分子动力学 (MD) 模拟.
在结合部位内对带运动的分析.
交互指纹 (IFP) 和接触频率分析.

主要成果:

相互作用指纹分析确定了连接物和FIXa残留物D189和A190之间的关键键.
动态分析揭示了FIXa特定的相互作用,并突出了缺席的极性相互作用在FXa选择性中的作用.
接触频率和连接体运动分析证实了选择性标准,并证明了选择性连接体的更紧密的结合.

结论:

在S1子站点中的特定键相互作用对FIXa选择性至关重要.
了解动态蛋白质-连接体相互作用是设计选择性抑制剂凝固因子的关键.
这项研究为开发具有更好的安全概况的向抗凝剂提供了基础.

关键词:

固定一个FIXa.在 FXaXa FXa 血液凝固因子是血液凝固因子.分子动力学模拟模拟选择性的选择性

更多相关视频

Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes

Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes

Published on: June 3, 2014

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

Published on: February 14, 2017

相关概念视频

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...