相关实验视频
Updated: Jul 12, 2025

10:20
In vitro Measurements of Tracheal Constriction Using Mice
Published on: June 25, 2012
20.8K
气道中的调节通路和机械敏感通道之间的相互作用
Yang Yao1,2, Niyati A Borkar2, Mengning Zheng2,3
1Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, China.
Expert review of respiratory medicine
|October 31, 2023
概括
像Piezo和短暂受体蛋白 (TRP) 道这样的机械敏感通道对于气道细胞中 (Ca2+) 信号传递至关重要,影响喘. 了解它们在Ca2+微域中的作用可能会揭示喘的新治疗点.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 呼吸系统医学 呼吸系统医学
- 身体生理学 身体生理学
背景情况:
- 喘是一种慢性肺部疾病,涉及呼吸道细胞中复杂的信号通路.
- 细胞微域因其在喘病理生理学中的作用越来越被认可,特别是在收缩性和重塑方面.
- 机械敏感通道,涉及Piezo和短暂受体蛋白 (TRP) 通道,对于将机械刺激转化为细胞反应至关重要.
研究的目的:
- 研究机械敏感通道在调节呼吸道细胞中 (Ca2+) 微域中对喘相关的作用.
- 探索Piezo和TRP通道如何影响喘中涉及的Ca2+信号通路.
主要方法:
- 该研究的重点是机械敏感通道 (Piezo,TRP) 和Ca2+调节蛋白之间的功能相互作用.
- 分析涉及STIM和Orai通道的存储运营入口 (SOCE).
- 检查 Sarcoendoplasmic网膜 (SR) Ca2+机制,包括IP3受体通道 (IP3Rs) 和SR Ca2+ ATPase (SERCA) 的检查.
主要成果:
- 机械敏感的TRP和Piezo通道调节关键的Ca2+调节蛋白.
- 这些道影响关键的Ca2+通路,如SOCE,IP3R和SERCA.
- 这些Ca2+机制的失调与喘病理生理学有关,包括呼吸道过度反应和重塑.
结论:
- 在理解喘方面,Ca2+调节蛋白和机械敏感通道之间的物理和功能相互作用至关重要.
- 针对这些相互作用可能为喘治疗提供新的治疗策略.
- 通过机械敏感通道调解的Ca2+微域的进一步研究对于喘管理是有必要的.
相关概念视频
Mechanically-gated Ion Channels
6.4K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
6.4K
Feedback Regulation of Calcium Concentration
3.4K
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...
3.4K
Antihypertensive Drugs: Action of Calcium Channel Blockers
535
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
535
Calmodulin-dependent Signaling
5.2K
Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
5.2K
Tension Response at Adherens Junctions
2.7K
The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
2.7K
Smooth Muscle Contraction
3.1K
Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
3.1K

