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The Journal of Cell Biology
Article
License: CC BY NC SA
Data sources: UnpayWall
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PubMed Central
Other literature type . 2009
Data sources: PubMed Central
The Journal of Cell Biology
Article . 2009 . Peer-reviewed
Data sources: Crossref
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Clathrin mediates integrin endocytosis for focal adhesion disassembly in migrating cells

Authors: Ezratty, Ellen J.; Bertaux, Claire; Marcantonio, Eugene E.; Gundersen, Gregg G.;

Clathrin mediates integrin endocytosis for focal adhesion disassembly in migrating cells

Abstract

Focal adhesion disassembly is regulated by microtubules (MTs) through an unknown mechanism that involves dynamin. To test whether endocytosis may be involved, we interfered with the function of clathrin or its adaptors autosomal recessive hypercholesteremia (ARH) and Dab2 (Disabled-2) and found that both treatments prevented MT-induced focal adhesion disassembly. Surface labeling experiments showed that integrin was endocytosed in an extracellular matrix–, clathrin-, and ARH- and Dab2-dependent manner before entering Rab5 endosomes. Clathrin colocalized with a subset of focal adhesions in an ARH- and Dab2-dependent fashion. Direct imaging showed that clathrin rapidly accumulated on focal adhesions during MT-stimulated disassembly and departed from focal adhesions with integrin upon their disassembly. In migrating cells, depletion of clathrin or Dab2 and ARH inhibited focal adhesion disassembly and decreased the rate of migration. These results show that focal adhesion disassembly occurs through a targeted mechanism involving MTs, clathrin, and specific clathrin adaptors and that direct endocytosis of integrins from focal adhesions mediates their disassembly in migrating cells.

Keywords

Focal Adhesions, Integrins, Cell Polarity, Membrane Proteins, Nerve Tissue Proteins, Microtubules, Clathrin, Endocytosis, Adaptor Proteins, Vesicular Transport, Mice, Cell Movement, NIH 3T3 Cells, Animals, RNA Interference, Apoptosis Regulatory Proteins, Research Articles, Adaptor Proteins, Signal Transducing

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
308
Top 1%
Top 1%
Top 1%
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