相关实验视频

Updated: Jun 14, 2025

Optical Control of a Neuronal Protein Using a Genetically Encoded Unnatural Amino Acid in Neurons

Optical Control of a Neuronal Protein Using a Genetically Encoded Unnatural Amino Acid in Neurons

Published on: March 28, 2016

使用可见光可逆控制原生含有GluN2B的NMDA受体

Chloé Geoffroy¹, Romain Berraud-Pache², Nicolas Chéron³

¹Institut de Biologie de l'Ecole Normale Supérieure (IBENS), Ecole Normale Supérieure, CNRS, INSERM, Université PSL, Paris F-75005, France.

ACS chemical neuroscience

|September 6, 2024

概括

研究人员开发了OptoNAM-3,一种新型光激活药物,可以精确控制NMDA受体 (NMDARs). 这种工具允许使用可见光对GluN2B-NMDARs进行可逆抑制,用于研究大脑功能.

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:

NMDA受体 (NMDARs) 对突触功能至关重要,它们的功能障碍与神经精神疾病有关.
含有GluN2B的NMDAR (GluN2B-NMDAR) 在认知和兴奋毒性中起着关键作用,但它们的确切参与仍在争论中.
现有的GluN2B选择性对抗剂由于缓慢和不可逆转的作用而存在局限性,阻碍了它们在动态生物系统中的使用.

研究的目的:

开发一种可光开关的负基调节器 (OptoNAM-3),用于选择性和可逆性抑制GluN2B-NMDARs.
调查OptoNAM-3在体外和体内疗效,以精确控制GluN2B-NMDAR活性.
探索OptoNAM-3的光化学特性和结合部位对光交换行为的影响.

主要方法:

开发OptoNAM-3,一个可光开关的负基调节器,针对GluN2B-NMDARs.
在体外和体内实验中使用Xenopus幼来评估GluN2B-NMDAR活性的光诱导抑制.
分析了OptoNAM-3的光交换特性,包括它对不同光波长的反应.

主要成果:

OptoNAM-3证明了光诱导的,可逆抑制的GluN2B-NMDAR活动与精确的时间控制.
该化合物在体外和体内都有效,影响了自由移动的Xenopus的行为.
OptoNAM-3 显示红移光交换,使活动调制用蓝光 (可见光谱) 而不是紫外线光.
结合点相互作用被确定为阿佐烯部分观察到的光化学性质的关键.

结论:

OptoNAM-3提供了一种强大的工具,用于选择性,快速和可逆的光控制本地GluN2B-NMDARs.
可见光兼容的光交换特性使OptoNAM-3适合在本地组织中研究GluN2B-NMDAR生理学.
这项研究强调了联体结合点相互作用在定制可光切换分子的光化学特征方面的重要性.

关键词:

选择性GluN2B对手的选择性对手它们是NMDA受体.亚洛斯特菌是什么意思?亚烯是什么亚烯是什么亚烯是什么谷氨酸酸盐的使用方法视光药理学视光药理学

更多相关视频

Multi-photon Intracellular Sodium Imaging Combined with UV-mediated Focal Uncaging of Glutamate in CA1 Pyramidal Neurons

Multi-photon Intracellular Sodium Imaging Combined with UV-mediated Focal Uncaging of Glutamate in CA1 Pyramidal Neurons

Published on: October 8, 2014

Using Optogenetics to Reverse Neuroplasticity and Inhibit Cocaine Seeking in Rats

Using Optogenetics to Reverse Neuroplasticity and Inhibit Cocaine Seeking in Rats

Published on: October 5, 2021

相关概念视频

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...

Photoreceptors and Visual Pathways

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...