title: E-cadherin binding modulates EGF receptor activation.
abstract: We found that E-cadherin and epidermal growth factor receptor (EGFR) are associated in mammary epithelial cells and that E-cadherin engagement in these cells induces transient activation of EGFR, as previously seen in keratinocytes (37). In contrast, EGFR does not associate with and is not activated by N-cadherin. Analysis of cells expressing chimeric cadherins revealed that the extracellular domain of E-cadherin is required for interaction with and activation of EGFR. This activation results in tyrosine phosphorylation of known EGFR substrates and reduction in focal adhesions. These interactions, however, are not necessary for suppression of cell motility by E-cadherin.
authors.affiliation: Department of Cell Biology, Neurobiology, and Anatomy, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA. mary.chaiken@uc.edu
authors.forename: Mary
authors.initials: M
authors.lastname: Fedor-Chaiken
authors.forename: Patrick W
authors.initials: PW
authors.lastname: Hein
authors.forename: Jane C
authors.initials: JC
authors.lastname: Stewart
authors.forename: Robert
authors.initials: R
authors.lastname: Brackenbury
authors.forename: Michael S
authors.initials: MS
authors.lastname: Kinch
mesh_terms: D001943:Breast Neoplasms / Q000235:genetics / Q000378:metabolism; D015820:Cadherins / Q000235:genetics / Q000378:metabolism*; D002277:Carcinoma / Q000235:genetics / Q000378:metabolism; D002448:Cell Adhesion / Q000235:genetics; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000235:genetics; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism*; D066246:ErbB Receptors / Q000378:metabolism*; D022001:Focal Adhesions / Q000235:genetics / Q000378:metabolism; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics; D006801:Humans; D042361:Mammary Glands, Human / Q000166:cytology / Q000378:metabolism*; D009362:Neoplasm Metastasis / Q000235:genetics; D010766:Phosphorylation; D017434:Protein Structure, Tertiary / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D015854:Up-Regulation / Q000235:genetics
chemical_list: D015820:Cadherins; D011993:Recombinant Fusion Proteins; D066246:ErbB Receptors