一种新的多巴胺D2受体-NR2B蛋白质复合体可能会导致吗啡使用障碍
Axiang Li1, Weifen Li2, Tahir Ali3
1College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, People's Republic of China; Institute of Forensic Injury, Institute of Forensic Bio-Evidence, Western China Science and Technology Innovation Harbor, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China; State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
European journal of pharmacology
|November 8, 2023
概括
研究人员发现多巴胺D2受体 (D2Rs) 和NMDA受体亚单元NR2B在吗啡成中形成一个复合体. 通过一种新来破坏这种复合物,减少了成行为,并改善了ERK信号传递.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 多巴胺受体与其他受体形成异构复合体,为大脑疾病提供新的治疗点.
- 多巴胺D2受体 (D2Rs) 和NMDA受体亚单元NR2B与吗啡使用障碍有关,但潜在的分子机制尚不清楚.
研究的目的:
- 为了研究在吗啡诱导的行为中D2R和NR2B之间的相互作用.
- 阐明D2R-NR2B复合体在吗啡成病理生理学的作用.
- 评估一种针对D2R-NR2B相互作用的基于的新型治疗策略.
主要方法:
- 使用了对吗啡诱导的有条件位置偏好 (CPP) 和超运动的小鼠模型.
- 研究了D2R-NR2B复合体和相关ERK信号通路的形成.
- 开发并测试了一种通过大脑透的干扰 (TAT-D2-KT),旨在破坏D2R-NR2B相互作用.
主要成果:
- 在吗啡诱导的小鼠模型中,D2R-NR2B复合体显著增加.
- 这种复杂的形成与ERK信号受损有关.
- 服用TAT-D2-KT可以减少类似上的行为,并改善ERK信号传递.
结论:
- 这项研究提供了第一个D2R-NMDAR复合体在吗啡使用障碍中形成的证据.
- D2R-NR2B复合体及其对ERK信号传递的影响代表了吗啡成的新机制.
- 针对D2R-NR2B与的相互作用,为吗啡成和复发提供了潜在的治疗策略.
相关概念视频
01:22Opioid Receptors: Overview
932
Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2,...
932
01:15Drug Abuse and Addiction: Pharmacological Phenomena
489
Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
489
01:25Analgesia and Pain Management
634
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
634
01:20Opioid Analgesics: Morphine and Other Natural Cogeners
262
Opioids are a class of drugs that mimic endogenous opioid peptides and act on opioid receptors, and help in pain relief. These compounds are classified as natural, synthetic, or semi-synthetic. Natural opioids, like morphine, codeine, and thebaine, are derived from the opium poppy plant (Papaver somniferum or Papaver album) and are termed opiates. Synthetic opioids are artificial, while semi-synthetic opioids combine natural and synthetic compounds. Morphine, a prototypical opioid, possesses a...
262
01:25Drug-Receptor Interaction: Agonist
2.5K
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...
2.5K
01:29Drugs Affecting Neurotransmitter Synthesis
1.4K
Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
1.4K