Format

Send to

Choose Destination
See comment in PubMed Commons below
EMBO J. 2011 Aug 19;30(20):4157-70. doi: 10.1038/emboj.2011.304.

Stabilizing the VE-cadherin-catenin complex blocks leukocyte extravasation and vascular permeability.

Author information

1
Department of Vascular Cell Biology, Max-Planck-Institute of Molecular Biomedicine, Münster, Germany.

Abstract

To determine whether leukocytes need to open endothelial cell contacts during extravasation, we decided to generate mice with strongly stabilized endothelial junctions. To this end, we replaced VE-cadherin genetically by a VE-cadherin-α-catenin fusion construct. Such mice were completely resistant to the induction of vascular leaks by VEGF or histamine. Neutrophil or lymphocyte recruitment into inflamed cremaster, lung and skin were strongly inhibited in these mice, documenting the importance of the junctional route in vivo. Surprisingly, lymphocyte homing into lymph nodes was not inhibited. VE-cadherin-α-catenin associated more intensely with the actin cytoskeleton as demonstrated by its membrane mobility and detergent extractability. Our results establish the junctional route as the main pathway for extravasating leukocytes in several, although not in all tissues. Furthermore, in these tissues, plasticity of the VE-cadherin-catenin complex is central for the leukocyte diapedesis mechanism.

PMID:
21857650
PMCID:
PMC3199392
DOI:
10.1038/emboj.2011.304
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Support Center