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Related Concept Videos

Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Adherens Junctions01:24

Adherens Junctions

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
The endothelial cells...
Anchoring Junctions01:03

Anchoring Junctions

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:...
Immunoglobulin-like Cell Adhesion Molecules01:31

Immunoglobulin-like Cell Adhesion Molecules

Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Cell Adhesion Molecules - Types and Functions01:20

Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
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Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes
09:14

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Published on: June 13, 2014

Adhesion signalling complexes.

Adam Byron1, Mark R Morgan1, Martin J Humphries1

  • 1Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK.

Current Biology : CB
|December 22, 2010
PubMed
Summary
This summary is machine-generated.

Cell adhesion receptors link the cytoskeleton to the extracellular matrix (ECM), controlling cell behavior and tissue structure. These receptors transmit mechanical forces and chemical signals, influencing cell movement and gene transcription.

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Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes
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Published on: June 13, 2014

Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules
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Area of Science:

  • Cell Biology
  • Biochemistry
  • Tissue Engineering

Background:

  • Intercellular communication in metazoa involves autocrine, paracrine, and exocrine signaling, alongside structural information from extracellular matrices (ECMs).
  • Cells are intricately integrated with their surrounding ECM through thousands of dynamic connections, crucial for tissue organization.

Purpose of the Study:

  • To elucidate the bidirectional roles of adhesion receptors in linking intracellular and extracellular environments.
  • To understand how adhesion receptors mediate mechanical force transduction and ECM organization.
  • To explore the impact of adhesion receptor engagement on cellular signaling pathways and tissue development.

Main Methods:

  • Investigated the molecular mechanisms of adhesion receptors, focusing on integrins and syndecans.
  • Analyzed the bidirectional transduction of mechanical forces across the plasma membrane.
  • Examined the signaling cascades initiated by ECM-receptor interactions.

Main Results:

  • Adhesion receptors link the cytoskeleton to the plasma membrane, compartmentalizing intracellular signaling.
  • These receptors organize ECM deposition and transduce mechanical forces bidirectionally.
  • ECM topography and composition are translated into chemical signals influencing cell behavior and gene transcription.

Conclusions:

  • Adhesion receptors are central to cell-matrix interactions, regulating both intracellular events and extracellular matrix construction.
  • Engagement of adhesion receptors impacts virtually all major signaling pathways, affecting cell movement, gene expression, and higher-order tissue structure.