rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
6
|
pubmed:dateCreated |
2006-5-22
|
pubmed:abstractText |
Ligation of the B cell antigen receptor (BCR) with antigen induces lipid raft coalescence, a process that occurs after crosslinking of a variety of signaling receptors and is thought to potentiate cellular activation. To investigate lipid raft dynamics during BCR signaling, we quantitatively analyzed the B cell lipid raft proteome. BCR engagement induced dissociation of the adaptor protein ezrin from lipid rafts as well as threonine dephosphorylation of ezrin and its concomitant detachment from actin, indicating a transient uncoupling of lipid rafts from the actin cytoskeleton. Expression of constitutively active ezrin chimeras inhibited the BCR-induced coalescence of lipid rafts. Our data demonstrate that the release of ezrin from lipid rafts acts as a critical trigger that regulates lipid raft dynamics during BCR signaling.
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pubmed:grant |
|
pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
1529-2908
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
7
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
625-33
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:16648854-B-Lymphocytes,
pubmed-meshheading:16648854-Cytoskeletal Proteins,
pubmed-meshheading:16648854-Humans,
pubmed-meshheading:16648854-Immunoglobulin M,
pubmed-meshheading:16648854-Lymphocyte Activation,
pubmed-meshheading:16648854-Membrane Microdomains,
pubmed-meshheading:16648854-Mutation,
pubmed-meshheading:16648854-Phosphorylation,
pubmed-meshheading:16648854-Proteome,
pubmed-meshheading:16648854-Proteomics,
pubmed-meshheading:16648854-Receptors, Antigen, B-Cell,
pubmed-meshheading:16648854-Recombinant Fusion Proteins,
pubmed-meshheading:16648854-Signal Transduction,
pubmed-meshheading:16648854-Threonine,
pubmed-meshheading:16648854-Tumor Cells, Cultured
|
pubmed:year |
2006
|
pubmed:articleTitle |
Quantitative proteomic analysis of B cell lipid rafts reveals that ezrin regulates antigen receptor-mediated lipid raft dynamics.
|
pubmed:affiliation |
Department of Microbiology and Immunology, University of California, San Francisco, California 94143, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, N.I.H., Extramural
|