Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 10
pubmed:dateCreated
2002-4-25
pubmed:abstractText
Integrins mediate cell adhesion and signal transduction at focal adhesions. Here we investigate the roles of integrin beta subunits in the regulation of actin cytoskeletal structure and the activities of Rho and Rac. The overexpression of beta3 integrin in Chinese hamster ovary cells enhances Rho activity and stress fiber formation, whereas the overexpression of beta1 integrin increases Rac activity and lamellipodia formation. The overexpression of a mutant beta1-3-1 integrin, in which the extracellular I-domain-like sequence of beta1 integrin has been replaced with the corresponding sequence of beta3 integrin, also enhances Rho activity and the formation of stress fibers. Our results demonstrate that beta1 and beta3 integrins differentially regulate the activities of Rho family GTPases and that the extracellular domains of integrin beta subunits play a critical role in transducing the extracellular ligand-binding information into specific intracellular signaling events.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9533
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
115
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2199-206
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed-meshheading:11973360-Actins, pubmed-meshheading:11973360-Animals, pubmed-meshheading:11973360-Antigens, CD29, pubmed-meshheading:11973360-CHO Cells, pubmed-meshheading:11973360-Cell Adhesion, pubmed-meshheading:11973360-Cell Size, pubmed-meshheading:11973360-Cricetinae, pubmed-meshheading:11973360-Fibrinogen, pubmed-meshheading:11973360-Fibronectins, pubmed-meshheading:11973360-Humans, pubmed-meshheading:11973360-Integrin beta3, pubmed-meshheading:11973360-JNK Mitogen-Activated Protein Kinases, pubmed-meshheading:11973360-Mitogen-Activated Protein Kinases, pubmed-meshheading:11973360-Phosphatidylinositol 3-Kinases, pubmed-meshheading:11973360-Protein Structure, Tertiary, pubmed-meshheading:11973360-Signal Transduction, pubmed-meshheading:11973360-Time Factors, pubmed-meshheading:11973360-Transfection, pubmed-meshheading:11973360-rac GTP-Binding Proteins, pubmed-meshheading:11973360-rho GTP-Binding Proteins
pubmed:year
2002
pubmed:articleTitle
Differential regulation of Rho GTPases by beta1 and beta3 integrins: the role of an extracellular domain of integrin in intracellular signaling.
pubmed:affiliation
Department of Bioengineering and The Whitaker Institute of Biomedical Engineering, University of California, San Diego, La Jolla 92093-0427, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't