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Adherens Junctions

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 Junctions

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:...

Cell Migration

Cell Migration

Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.

Cell Migration

Cell Migration

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.

Cytoskeletal Coordination in Cell Migration

Cytoskeletal Coordination in Cell Migration

A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker proteins that...

Tension Response at Adherens Junctions

Tension Response at Adherens Junctions

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 homology) domains...

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Related Experiment Video

Updated: May 21, 2026

Measuring Cell-Edge Protrusion Dynamics during Spreading using Live-Cell Microscopy

Measuring Cell-Edge Protrusion Dynamics during Spreading using Live-Cell Microscopy

Published on: November 1, 2021

Adherens junctions during cell migration.

Sandrine Etienne-Manneville¹

¹Institut Pasteur, Cell Polarity and Migration Group and CNRS URA 2582, 25 Rue du Dr Roux, 75724, Paris Cedex 15, France, sandrine.etienne-manneville@pasteur.fr.

Sub-Cellular Biochemistry

|June 8, 2012

Summary

This summary is machine-generated.

Cellular migration is vital for development and adult functions like immunity and wound healing. Adherens junctions control cell movement and tissue integrity by mediating cell-cell interactions and signaling.

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

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Published on: April 4, 2013

Area of Science:

Cell Biology
Developmental Biology
Biophysics

Background:

Cell migration is fundamental to embryonic development, immune responses, wound healing, and tumor invasion.
During migration, cells interact with their microenvironment, including the extracellular matrix and neighboring cells.
Cell-cell adhesions, particularly cadherin and nectin-based adherens junctions, are crucial for maintaining tissue integrity and regulating cell movement.

Purpose of the Study:

To elucidate the multifaceted roles of adherens junctions in directed cell migration.
To understand how adherens junctions influence cell coordination during collective migration.
To investigate the signaling functions of adherens junctions in controlling cell polarity and motility.

Main Methods:

The study likely involved advanced microscopy techniques to observe cell migration in real-time.
Analysis of cell-cell adhesion dynamics and mechanical properties was probably employed.
Investigating signaling pathways downstream of adherens junctions was likely a key methodological component.

Main Results:

Adherens junctions act as adhesive complexes, enhancing cell coordination in collective migration.
These junctions promote cell motility on specific substrates, such as cadherin-coated surfaces.
Adherens junctions transduce signals that provide polarity cues and mediate contact inhibition of motility, actively controlling directed cell migration.

Conclusions:

Adherens junctions are critical regulators of cell migration, impacting both individual cell movement and collective tissue dynamics.
Their dual role as mechanical anchors and signaling hubs underscores their importance in diverse biological processes.
Understanding adherens junction function provides insights into tissue development, immune cell function, and disease progression, including cancer metastasis.