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Integrin α5 interacts with EGFR, is necessary for Fce{open}RI signaling and is necessary for allergic inflammation in relation with angiogenesis

Title
Integrin α5 interacts with EGFR, is necessary for Fce{open}RI signaling and is necessary for allergic inflammation in relation with angiogenesis
Authors
Kim Y.Kim K.Park D.Eom S.Park H.Lee H.Lee Y.-S.Choe J.Hahn J.-H.Kim Y.-M.Ro J.Y.Jeoung D.
Ewha Authors
이윤실
SCOPUS Author ID
이윤실scopus
Issue Date
2011
Journal Title
Molecular Immunology
ISSN
0161-5890JCR Link
Citation
vol. 48, no. 8, pp. 1035 - 1045
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Recent reports have suggested role for epidermal growth factor receptor (EGFR) in asthma and skin inflammation. Integrin(s) are known to be necessary for the transactivation of EGFR. The roles of EGFR and integrin(s) in allergic inflammation were investigated. Antigen stimulation induced activation of EGFR and interaction between EGFR and integrin α5 in Rat Basophilic Leukemia (RBL2H3) cells and bone marrow-derived mouse mast cells (BMMCs). Flow cytometry revealed increased phosphorylation of EGFR on cell surfaces. Antigen stimulation induced interaction between EGFR and Fce{open}RI in both RBL2H3 cells and BMMCs. Blocking of EGFR or integrin α exerted negative effects on rac1 activity and secretion of β-hexosaminidase in both RBL2H3 cells and BMMCs. EGFR and integrin α5 were found to be necessary for IgE-dependent cutaneous anaphylaxis. FAK (focal adhesion kinase), interacted with EGFR and with Fce{open}RI upon antigen stimulation, and it was necessary for the increased secretion of β-hexosaminidase in both RBL2H3 cells and BMMCs. EGFR and integrin α5 were necessary for interactions between activated RBL2H3 cells, BMMCs and rat aortic endothelial cells (RAECs). Conditioned medium of antigen-stimulated RBL2H3 cells promoted RAECs tube formation, rat aortic ring formation and blood vessel formation. Conditioned medium of antigen-stimulated BMMCs also had the same effects on RAECs. This enhanced angiogenic potential of RAECs was dependent on EGFR and integrin α5. In conclusion, EGFR, via interaction with Fce{open}RI and integrin α5, is necessary for allergic inflammation associated with cellular interaction. © 2011 Elsevier Ltd.
DOI
10.1016/j.molimm.2011.01.013
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약학대학 > 약학과 > Journal papers
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