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相关概念视频

Structure of Cadherins01:25

Structure of Cadherins

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The cadherins were one of the first cell adhesion molecules discovered; the term “cadherins”   is based on their calcium-dependent adhering properties. The first cadherins discovered on the epithelial, neuronal, and placental cells were named E-cadherin, P-cadherin, and N-cadherin, respectively. These classical cadherins share sequence and structural similarities. Other cadherins, including those involved in cell signaling, are grouped into non-classical cadherins. This...
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Adherens Junctions01:24

Adherens Junctions

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Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types –  adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as  epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as  heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
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Cadherins in Tissue Organization01:19

Cadherins in Tissue Organization

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The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
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Anchoring Junctions01:03

Anchoring Junctions

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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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Cell Motility through Blebbing01:16

Cell Motility through Blebbing

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Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
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Overview of Cell-Matrix Interactions01:24

Overview of Cell-Matrix Interactions

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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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相关实验视频

Updated: Jul 7, 2025

Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules
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Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules

Published on: October 17, 2014

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粘附诱导的皮质流动模式 E-cadherin介导的细胞接触.

Feyza Nur Arslan1, Édouard Hannezo2, Jack Merrin2

  • 1Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria; Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne 1015, Switzerland.

Current biology : CB
|December 22, 2023
PubMed
概括

通过F-actin流动形成新的细胞接触,而F-actin流动是由肌酸酶-2的耗尽驱动的. 这一过程重组了粘附受体和细胞皮质,这对于细胞在发育过程中连接至关重要.

关键词:
这种药物是actomyosin.卡德林是个非常有趣的人.细胞粘附 细胞粘附接触模式的联系方式皮层流是指皮层的流动.皮层张力是皮层张力.细胞骨架 细胞骨架支持的脂质二层.

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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy

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Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy
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相关实验视频

Last Updated: Jul 7, 2025

Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules
08:15

Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules

Published on: October 17, 2014

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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy
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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy

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Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy
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Visualizing Adhesion Formation in Cells by Means of Advanced Spinning Disk-Total Internal Reflection Fluorescence Microscopy

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科学领域:

  • 细胞生物学 细胞生物学
  • 生物物理学的生物物理.
  • 发展生物学 发展生物学

背景情况:

  • 细胞与细胞接触的形成和重塑对于甲状动物的发展至关重要.
  • 粘附受体和actomyosin细胞皮层的动态重组是细胞与细胞接触成熟的核心.
  • 在新接触形成期间,这些动态变化背后的机制尚未完全理解.

研究的目的:

  • 在细胞与细胞接触的初始形成过程中阐明动态细胞皮层和粘附受体重组的机制基础.
  • 调查F-actin流和actomyosin动态在成熟细胞-细胞粘附的建立中的作用.

主要方法:

  • 使用原生细胞和支持的脂质双层与E-cadherin ectodomains功能化的生物仿真试验的开发.
  • 利用活细胞成像和生物物理技术观察和量化形成细胞接触时的分子动态.
  • 研究了E-cadherin,RhoA,myosin-2和F-actin在调节皮质组织和流动中的作用.

主要成果:

  • 皮质F-actin流动,由接触中心的肌-2枯竭驱动,协调粘附受体和细胞皮层的重组.
  • 在形成接触处以E-cadherin为媒介的RhoA降低调节,降低了中心的肌酸-2和F-actin.
  • 在接触边缘的myosin-2丰富,通过bleb收缩,创建一个张力梯度,驱动离心F-actin流和E-cadherin再分配到边缘.

结论:

  • 这项研究揭示了一种由actomyosin动态和F-actin流动驱动的细胞与细胞接触成熟的新机制.
  • 离心F-actin流和接触边缘的E-cadherin积累对于机械连接附着细胞的收缩皮层至关重要.
  • 这一过程建立了在发育过程中稳定和功能性细胞对细胞粘附所需的特征分子组织.