関連する実験動画
Updated: Nov 16, 2025

10:14
Recapitulation of an Ion Channel IV Curve Using Frequency Components
Published on: February 8, 2011
13.7K
テラヘルツ波は,電圧ゲートカルシウムチャネルの透過性を高める
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
まとめ
テラヘルツ波は,水素結合を強化し,カルシウムイオン (Ca2+) 輸送を改善することで,カルシウムチャネル機能を強化します. この発見は,カルシウムチャネル病と癌の治療のための新しい治療戦略を提供します.
科学分野:
- バイオ物理学
- カルシウムチャネル生理学
- 分子生物物理学
背景:
- カルシウムチャネル病は,カルシウムイオン (Ca2+) の流動が損なわれた結果である.
- Ca2+チャネルの調節を理解することは,治療開発にとって極めて重要です.
研究 の 目的:
- 運河の浸透におけるCa2+水分化の役割を調査する.
- テラヘルツ波がCa2+チャネル伝導に及ぼす影響を調査する.
主な方法:
- Ca2+輸送の自由エネルギーの計算分析
- カルシウムチャネルにテラヘルツ波を適用する
- 水素結合強化とイオン浸透の分析
主要な成果:
- 橋渡しCa2+水分はCa2+浸透に大きく影響する.
- テラヘルツ波の共鳴はCa2+の選択性と伝導性を約5倍に高めます.
- テラヘルツ波による振動が チャンネル活動を調節します
結論:
- カルシウムチャネルのテラヘルツ波操作は 治療的な可能性を秘めています
- アプリケーションには,カルシウムチャネル病変の治療と腫瘍細胞のアポトーシスの誘導が含まれます.
関連する概念動画
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

