Temporally resolved interactions between antigen-stimulated IgE receptors and Lyn kinase on living cells.
Temporally resolved interactions between antigen-stimulated IgE receptors and Lyn kinase on living cells.
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DOI:
10.1083/jcb.200503110
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发表时间:
2005-11-07
期刊:
影响因子:
--
通讯作者:
Webb WW
中科院分区:
文献类型:
--
作者:
Larson DR;Gosse JA;Holowka DA;Baird BA;Webb WW
Upon cross-linking by antigen, the high affinity receptor for immunoglobulin E (IgE), FcɛRI, is phosphorylated by the Src family tyrosine kinase Lyn to initiate mast cell signaling, leading to degranulation. Using fluorescence correlation spectroscopy (FCS), we observe stimulation-dependent associations between fluorescently labeled IgE-FcɛRI and Lyn-EGFP on individual cells. We also simultaneously measure temporal variations in the lateral diffusion of these proteins. Antigen-stimulated interactions between these proteins detected subsequent to the initiation of receptor phosphorylation exhibit time-dependent changes, suggesting multiple associations between FcɛRI and Lyn-EGFP. During this period, we also observe a persistent decrease in Lyn-EGFP lateral diffusion that is dependent on Src family kinase activity. These stimulated interactions are not observed between FcɛRI and a chimeric EGFP that contains only the membrane-targeting sequence from Lyn. Our results reveal real-time interactions between Lyn and cross-linked FcɛRI implicated in downstream signaling events. They demonstrate the capacity of FCS cross-correlation analysis to investigate the mechanism of signaling-dependent protein–protein interactions in intact, living cells.
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影响因子:
5.4
作者:
Amoui, M;Draber, P;Draberova, L
通讯作者:
Draberova, L
DOI:
10.1073/pnas.180317197
发表时间:
2000-09-12
影响因子:
11.1
作者:
Heinze, KG;Koltermann, A;Schwille, P
通讯作者:
Schwille, P
DOI:
10.1083/jcb.200303200
发表时间:
2003-09-29
期刊:
The Journal of cell biology
影响因子:
--
作者:
Larson DR;Ma YM;Vogt VM;Webb WW
通讯作者:
Webb WW
影响因子:
5.3
作者:
Honda, ZI;Suzuki, T;Yamamoto, K
通讯作者:
Yamamoto, K
影响因子:
4.8
作者:
Denny, MF;Kaufman, HC;Straus, DB
通讯作者:
Straus, DB