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Related Experiment Video

Updated: Aug 29, 2025

Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

Published on: June 13, 2014

Ligand-bound integrin αvβ6 internalisation and trafficking.

Amelia Meecham^1,2, Lauren C Cutmore¹, Pantelitsa Protopapa¹

¹Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom.

Frontiers in Cell and Developmental Biology

|September 12, 2022

Summary

Researchers identified key genes regulating integrin αvβ6 endocytosis, crucial for developing targeted cancer and fibrosis therapies. Understanding αvβ6 trafficking and recycling is vital for new therapeutic strategies.

Keywords:

A20FMDV2 endocytosis internalisation trafficking αvβ6

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Last Updated: Aug 29, 2025

Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

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Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with β-arrestin

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Author Spotlight: Development of a Method for Identifying Small Molecular Antagonists of β2 Integrin Activation

Author Spotlight: Development of a Method for Identifying Small Molecular Antagonists of β2 Integrin Activation

Published on: February 2, 2024

Area of Science:

Cell Biology
Molecular Medicine
Biochemistry

Background:

Integrin αvβ6 is minimally expressed in healthy tissues but significantly upregulated in diseases like cancer and fibrosis.
Integrin surface expression and function are regulated by endocytosis and trafficking, yet αvβ6 regulation remains poorly understood.
Targeting αvβ6 is a key strategy for developing novel therapeutics for cancer and fibrosis.

Purpose of the Study:

To elucidate the endocytic pathways and regulatory mechanisms governing integrin αvβ6.
To identify genes involved in αvβ6 internalization and trafficking.
To assess the impact of αvβ6 endocytosis inhibition on cell migration and therapeutic potential.

Main Methods:

Development of a flow cytometry assay to quantify ligand-bound αvβ6 endocytosis.
Performed an siRNA screen to identify genes regulating αvβ6 internalization.
Investigated αvβ6 colocalization with endosomal markers and assessed recycling dynamics.

Main Results:

Identified 15 genes, primarily involved in dynamin-dependent pathways, that significantly decrease αvβ6 endocytosis.
Inhibition of dynamin-dependent pathways (clathrin and caveolin) substantially reduced αvβ6-dependent cell migration.
Ligand-bound αvβ6 resides in Rab11-positive endosomes for up to 6 hours, with 60% recycled to the surface by this time, and shows no degradation within 48 hours.

Conclusions:

Integrin αvβ6 undergoes dynamin-dependent endocytosis and recycling, with ligand binding influencing its surface presence and potentially therapeutic delivery.
These findings are critical for designing effective αvβ6-targeted therapies for cancer and fibrosis, considering the ligand-bound state upon recycling.
Understanding αvβ6 trafficking dynamics provides insights into optimizing therapeutic strategies and payload delivery.