相关实验视频
Updated: Nov 16, 2025

10:14
Recapitulation of an Ion Channel IV Curve Using Frequency Components
Published on: February 8, 2011
13.7K
太赫兹波增加了电压通道的透性
Yangmei Li1, Chao Chang1,2, Zhi Zhu3
1Innovation Laboratory of Terahertz Biophysics, National Innovation Institute of Defense Technology, Beijing 100071, People's Republic of China.
Journal of the American Chemical Society
|February 24, 2021
概括
太赫兹波通过加强键,改善离子 (Ca2+) 运输来增强通道功能. 这一发现为通道病和癌症治疗提供了新的治疗策略.
科学领域:
- 生物物理
- 通道生理学
- 分子生物物理学
背景情况:
- 通道病因于离子 (Ca2+) 流量受损.
- 了解Ca2+通道调节对于治疗发展至关重要.
研究的目的:
- 调查Ca2+水合水在道透中的作用.
- 探索太赫兹波对Ca2+通道传导的影响.
主要方法:
- 对Ca2+运输自由能量的计算分析.
- 在通道上使用太赫兹波.
- 对键强化和离子透的分析.
主要成果:
- 桥梁Ca2+水合水具有显著的影响Ca2+透.
- 太赫兹波共振提高了约5倍的Ca2+选择性和导电性.
- 通过特拉赫兹波强制振动调节通道活动.
结论:
- 通道的特拉赫兹波操纵具有治疗潜力.
- 应用包括治疗通道病变和诱导瘤细胞亡.
相关概念视频
The Role of Ion Channels in Neuronal Computation
3.4K
A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
3.4K
Feedback Regulation of Calcium Concentration
3.7K
Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
3.7K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
3.3K
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...
3.3K
Voltage-gated Ion Channels
9.5K
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several...
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several...
9.5K
G-Protein Gated Ion Channels
5.2K
GPCRs are primarily responsible for our sense of smell, taste, and vision. The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
Sensory...
5.2K
Antiepileptic Drugs: Calcium Channel Blockers
856
Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
856

