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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2000-6-20
pubmed:abstractText
Genetics studies have identified the gene for the high-affinity IgE receptor (FC(epsilon)RI) beta subunit as a candidate gene for atopy. We have shown that beta is an intrinsic signaling amplifier leading to enhanced allergic responses in vivo. Here we report that beta has a second amplification function: the amplification of Fc(epsilon)RI cell surface expression. This function is due to an early association of beta with alpha, resulting in improved trafficking and maturation of alpha and receptor complexes. These data provide a possible molecular explanation for the large difference in Fc(epsilon)RI density between beta-cells such as monocytes, dendritic cells, and beta+ effector cells (mast cells, basophils). In beta+ cells, the combined signaling and expression amplification results in an estimated 12- to 30-fold amplification of downstream events.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1074-7613
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
515-23
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
A second amplifier function for the allergy-associated Fc(epsilon)RI-beta subunit.
pubmed:affiliation
Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA.
pubmed:publicationType
Journal Article