对抗者与血管压素V1b受体结合的结构基础由分子动力学模拟揭示
1Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland.
Biopolymers
|September 17, 2024
概括
尼利瓦普坦是一种V1bR抗剂,通过抑制下丘脑-垂体-上腺轴,在与压力相关的疾病中显示出有希望的治疗潜力. 分子动力学模拟揭示了它在V1b受体内的结合机制和选择性.
科学领域:
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 人类V1b受体 (V1bR) 调节下丘脑-垂体-上腺 (HPA) 轴,这对应激反应至关重要.
- HPA轴功能障碍与焦虑和抑郁症等精神疾病有关.
- V1bR对抗剂为这些疾病提供了潜在的治疗策略.
研究的目的:
- 为了研究V1bR抗体尼利瓦普坦与V1bR之间的分子相互作用.
- 使用计算方法阐明尼利瓦普坦的结合机制和选择性.
- 为药物开发提供关于V1bR-连接物相互作用的见解.
主要方法:
- 基于相关受体结构的V1bR的同质模型.
- 六个独立的分子动力学模拟V1bR-nelivaptan复合体 (6.0微秒总计).
- 对受体-连接体相互作用的分析和关键结合残留物的鉴定.
主要成果:
- 该研究确定了V1bR-nelivaptan复合物的最可能的结构.
- 尼利瓦普坦在V1bR口袋中的连接体位置与其他血管压素/氧化素受体家族连接体一致.
- 关键残留物L200和T203被认为可能有助于结合选择性.
结论:
- 尼利瓦普坦在相关受体中表现出类似于其他配体的结合模式.
- 分子动力学模拟提供了关于nelivaptan在V1bR.中的对抗机制的详细见解.
- 了解这些相互作用可以指导开发新型治疗与压力相关疾病的新疗法.
相关概念视频
Drug-Receptor Interaction: Antagonist
2.8K
An antagonist is a drug that binds strongly to a receptor without activating it. An antagonist prevents other molecules, such as neurotransmitters or hormones, from binding to the receptor and triggering a cellular response. Such interaction effectively hinders the normal physiological processes mediated by the receptor, resulting in various pharmacological effects depending on the specific receptor targeted.
Antagonists can be classified as competitive or noncompetitive based on their...
Antagonists can be classified as competitive or noncompetitive based on their...
2.8K
Combined Effects of Drugs: Antagonism
8.4K
The combined effects of drugs can result in various interactions, of which an important type is antagonism. Antagonism is a mechanism where one drug inhibits or counteracts the effects of another drug. Antagonism can occur through various means, including receptor binding, allosteric modulation, functional interaction, chemical reactions, and pharmacokinetic processes.
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...
8.4K
Drug-Receptor Interaction: Agonist
2.4K
Agonists are drugs that interact with specific receptors in the body to produce a biological response. When an agonist binds to a receptor, it activates or enhances the receptor's function, leading to physiological effects. The interaction between agonist drugs and receptors is crucial for their therapeutic action in various medical treatments.
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
2.4K
The Two-State Receptor Model
1.9K
The two-state receptor model explains a drug's interaction with receptors, such as G protein-coupled receptors and ligand-gated ion channels, to induce or inhibit a biological response. When no natural ligands are present, a receptor exists in an equilibrium of inactive (Ri) and active (Ra) conformations. The inactive form does not produce a response, while the active form generates a basal effect known as constitutive activity.
The binding affinity of a drug determines its interaction with...
The binding affinity of a drug determines its interaction with...
1.9K
Drug-Receptor Interactions
5.1K
Drug-receptor interaction describes the binding of receptors by drugs, but not all drug-receptor interactions result in activation and tissue response. For instance, the binding of agonists activates the receptor to generate a cellular reaction, while antagonists bind to receptors without causing their activation.
Several parameters, such as the drug's affinity for its receptor and its efficacy, which is its ability to activate the receptor, determine the drug's effect on the tissue....
Several parameters, such as the drug's affinity for its receptor and its efficacy, which is its ability to activate the receptor, determine the drug's effect on the tissue....
5.1K
Adrenergic Antagonists: Pharmacological Actions of ɑ-Receptor Blockers
559
α-Adrenergic antagonists, known as α-blockers, exert their effects by inhibiting α-adrenoceptors, leading to specific physiological actions. α1-blockers and α2-blockers have distinct pharmacological actions and therapeutic applications.
α1-blockers: These drugs inhibit α1-adrenoceptors on smooth muscle cells, resulting in vasodilation. This vasodilation lowers blood pressure, making α1-blockers valuable in treating hypertension. Additionally,...
α1-blockers: These drugs inhibit α1-adrenoceptors on smooth muscle cells, resulting in vasodilation. This vasodilation lowers blood pressure, making α1-blockers valuable in treating hypertension. Additionally,...
559


