相关实验视频
Updated: Jan 23, 2026

06:42
Subtype-selective Electroporation of Cortical Interneurons
Published on: August 18, 2014
9.2K
在整个发育过程中通过连接体-受体推断揭示神经元亚型之间的皮层连接的分子逻辑
Rémi Mathieu1, Tangra Draia-Nicolau1, Léa Corbières1
1INMED, INSERM, Aix Marseille University, Marseille, France.
Nature communications
|January 21, 2026
概括
这项研究通过绘制神经元类型之间的联结体-受体相互作用来解读指导大脑线路的分子信号. 关键的发现揭示了NEOGENIN-1和cadherins在发育中的大脑皮层中调节特定的突触形成.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 基因组学就是基因组学.
背景情况:
- 大脑皮层有各种各样的神经元亚型,具有复杂的连接性.
- 控制精确神经元连接的分子机制尚未完全理解.
研究的目的:
- 为了确定对皮质电路组件至关重要的连接体-受体 (LR) 相互作用.
- 为了生成激发性和抑制性皮质神经元之间的LR介导通信的全面地图.
主要方法:
- 单细胞转录组学被用来追踪17个发育阶段的大鼠神经元群体的基因表达.
- 分析的重点是确定参与神经元通信的LR对.
主要成果:
- 创建了皮层神经元亚型之间的LR介导通信的详细地图,包括新的相互作用.
- 确定了NEOGENIN-1作为CBLN4的主要受体,它介导索马托斯塔丁内部神经元和谷氨酸性神经元之间的突触形成.
- 卡德林超级家族的成员参与调节周周体抑制,对突触形成有相反的影响.
结论:
- 单细胞转录学是一种强大的工具,用于剖析皮层电线的分子基础.
- 特定的LR相互作用,如NEOGENIN-1/CBLN4和cadherins,在建立精确的神经元连接方面发挥着关键作用.
- 卡德林在突触特异性和周周体抑制中表现出取决于背景的作用.
相关概念视频
Adrenergic Receptors: ɑ Subtype
2.8K
Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
2.8K
Adrenergic Receptors: β Subtype
3.7K
β-adrenoceptors have varied sensitivities towards adrenaline, noradrenaline, and isoprenaline. The order of agonist potency is as follows:
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
3.7K
Ligand Binding and Linkage
5.5K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.5K
Internal Receptors
74.3K
Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.3K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
3.8K
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...
3.8K
Ligand Binding Sites
14.9K
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
14.9K

