相关实验视频
Updated: May 29, 2025

12:22
Automated Quantification of Synaptic Fluorescence in C. elegans
Published on: August 10, 2012
10.3K
催化细胞调节器复合素控制自发突触囊泡释放在C. elegans激发突触的CAPS-依赖的方式
Ya Wang1, Chun Hin Chow2,3, Yu Zhang1
1Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
PLoS biology
|February 6, 2025
概括
复合素 (CPX-1) 和CAPS (UNC-31) 调节突触平衡. CPX-1控制自发释放,而UNC-31影响唤起释放,揭示了它们在运动协调中的独特作用.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 突触传输是突触传输的过程.
背景情况:
- 突触刺激-抑制 (E/I) 平衡对于运动控制至关重要.
- 在E / I平衡中,外细胞调节者的特定作用尚未完全理解.
研究的目的:
- 研究复合素/CPX-1和CAPS/UNC-31在调节神经肌肉结点的E/I平衡中的作用.
- 阐明CPX-1和UNC-31在突触传输中的相互作用.
主要方法:
- 使用了Caenorhabditis elegans神经肌肉连接点.
- 为cpx-1和unc-31.1生成和分析了零和突变菌株.
- 进行自发和引起释放测量.
- 进行了拉下测试,以评估蛋白质相互作用.
主要成果:
- cpx-1突变体显示激发性自发释放增加和不平等的唤起释放减少.
- 一种特定于紧的cpx-1突变体证实了增强的刺激性自发释放.
- unc-31突变体表现出减少的唤起释放,特别是在激发性突触.
- CPX-1的紧功能取决于UNC-31和.
- UNC-31和复合素没有直接相互作用,这表明间接调节.
结论:
- CPX-1和UNC-31在调节突触E/I平衡方面发挥着不同的,但相互关联的作用.
- UNC-31的功能对CPX-1的紧活动至关重要.
- 这些调节器对于协调的运动行为至关重要,对物种有影响.
相关概念视频
Fusion of Secretory Vesicles with the Plasma Membrane
10.8K
Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
10.8K
Overview of Secretory Vesicles
8.3K
Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
8.3K
Exocytosis
66.2K
Exocytosis is used to release material from cells. Like other bulk transport mechanisms, exocytosis requires energy.
66.2K
Pinching-off of Coated Vesicles
3.1K
Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
3.1K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
2.1K
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...
2.1K
Vesicular Tubular Clusters
2.4K
After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...
With the help of motor proteins such...
2.4K

