Linked Life Data

10347182

Source:http://linkedlifedata.com/resource/pubmed/id/10347182

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
23
pubmed:dateCreated
1999-7-1
pubmed:abstractText
Agonist-induced redistribution of G-protein-coupled receptors (GPCRs) and beta-arrestins determines the subsequent cellular responsiveness to agonists and is important for signal transduction. We examined substance P (SP)-induced trafficking of beta-arrestin1 and the neurokinin-1 receptor (NK1R) in KNRK cells in real time using green fluorescent protein. Green fluorescent protein did not alter function or localization of the NK1R or beta-arrestin1. SP induced (a) striking and rapid (<1 min) translocation of beta-arrestin1 from the cytosol to the plasma membrane, which preceded NK1R endocytosis; (b) redistribution of the NK1R and beta-arrestin1 into the same endosomes containing SP and the transferrin receptor (2-10 min); (c) prolonged colocalization of the NK1R and beta-arrestin1 in endosomes (>60 min); (d) gradual resumption of the steady state distribution of the NK1R at the plasma membrane and beta-arrestin1 in the cytosol (4-6 h). SP stimulated a similar redistribution of immunoreactive beta-arrestin1 and beta-arrestin2. In contrast, SP did not affect Galphaq/11 distribution, which remained at the plasma membrane. Expression of the dominant negative beta-arrestin319-418 inhibited SP-induced endocytosis of the NK1R. Thus, SP induces rapid translocation of beta-arrestins to the plasma membrane, where they participate in NK1R endocytosis. beta-Arrestins colocalize with the NK1R in endosomes until the NK1R recycles and beta-arrestins return to the cytosol.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
274
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
16257-68
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Substance P-induced trafficking of beta-arrestins. The role of beta-arrestins in endocytosis of the neurokinin-1 receptor.
pubmed:affiliation
Department of Surgery, University of California, San Francisco, California 94143-0660, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.