PMID- 21281808 OWN - NLM STAT- MEDLINE DCOM- 20110523 LR - 20211020 IS - 1525-2191 (Electronic) IS - 0002-9440 (Print) IS - 0002-9440 (Linking) VI - 178 IP - 2 DP - 2011 Feb TI - Tenascin C induces epithelial-mesenchymal transition-like change accompanied by SRC activation and focal adhesion kinase phosphorylation in human breast cancer cells. PG - 754-63 LID - 10.1016/j.ajpath.2010.10.015 [doi] AB - Tenascin C (TNC) is an extracellular matrix glycoprotein up-regulated in solid tumors. Higher TNC expression is shown in invading fronts of breast cancer, which correlates with poorer patient outcome. We examined whether TNC induces epithelial-mesenchymal transition (EMT) in breast cancer. Immunohistochemical analysis of invasive ductal carcinomas showed that TNC deposition was frequent in stroma with scattered cancer cells in peripheral margins of tumors. The addition of TNC to the medium of the MCF-7 breast cancer cells caused EMT-like change and delocalization of E-cadherin and beta-catenin from cell-cell contact. Although amounts of E-cadherin and beta-catenin were not changed after EMT in total lysates, they were increased in the Triton X-100-soluble fractions, indicating movement from the membrane into the cytosol. In wound healing assay, cells were scattered from wound edges and showed faster migration after TNC treatment. The EMT phenotype was correlated with SRC activation through phosphorylation at Y418 and phosphorylation of focal adhesion kinase (FAK) at Y861 and Y925 of SRC substrate sites. These phosphorylated proteins colocalized with alphav integrin-positive adhesion plaques. A neutralizing antibody against alphav or a SRC kinase inhibitor blocked EMT. TNC could induce EMT-like change showing loss of intercellular adhesion and enhanced migration in breast cancer cells, associated with FAK phosphorylation by SRC; this may be responsible for the observed promotion of TNC in breast cancer invasion. CI - Copyright (c) 2011 American Society for Investigative Pathology. Published by Elsevier Inc. All rights reserved. FAU - Nagaharu, Keiki AU - Nagaharu K AD - Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, Mie, Japan. FAU - Zhang, Xinhui AU - Zhang X FAU - Yoshida, Toshimichi AU - Yoshida T FAU - Katoh, Daisuke AU - Katoh D FAU - Hanamura, Noriko AU - Hanamura N FAU - Kozuka, Yuji AU - Kozuka Y FAU - Ogawa, Tomoko AU - Ogawa T FAU - Shiraishi, Taizo AU - Shiraishi T FAU - Imanaka-Yoshida, Kyoko AU - Imanaka-Yoshida K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Pathol JT - The American journal of pathology JID - 0370502 RN - 0 (Antibodies, Neutralizing) RN - 0 (Cadherins) RN - 0 (Integrin alphaV) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Tenascin) RN - 0 (beta Catenin) RN - EC 2.7.10.2 (Focal Adhesion Kinase 1) RN - EC 2.7.10.2 (PTK2 protein, human) RN - EC 2.7.10.2 (src-Family Kinases) SB - IM MH - Antibodies, Neutralizing/pharmacology MH - Breast Neoplasms/*enzymology/*pathology MH - Cadherins/metabolism MH - Cell Line, Tumor MH - Cell Membrane/drug effects/metabolism MH - Cell Movement/drug effects MH - Cytoplasm/drug effects/metabolism MH - Epithelial-Mesenchymal Transition/*drug effects MH - Female MH - Focal Adhesion Kinase 1/*metabolism MH - Humans MH - Integrin alphaV/immunology MH - Neoplasm Invasiveness MH - Phosphorylation/drug effects MH - Protein Kinase Inhibitors/pharmacology MH - Protein Transport/drug effects MH - Stromal Cells/drug effects/pathology MH - Subcellular Fractions/metabolism MH - Tenascin/*pharmacology MH - Wound Healing/drug effects MH - beta Catenin/metabolism MH - src-Family Kinases/*metabolism PMC - PMC3069868 EDAT- 2011/02/02 06:00 MHDA- 2011/05/24 06:00 PMCR- 2012/02/01 CRDT- 2011/02/02 06:00 PHST- 2010/01/03 00:00 [received] PHST- 2010/10/14 00:00 [revised] PHST- 2010/10/19 00:00 [accepted] PHST- 2011/02/02 06:00 [entrez] PHST- 2011/02/02 06:00 [pubmed] PHST- 2011/05/24 06:00 [medline] PHST- 2012/02/01 00:00 [pmc-release] AID - S0002-9440(10)00108-2 [pii] AID - AJPA107 [pii] AID - 10.1016/j.ajpath.2010.10.015 [doi] PST - ppublish SO - Am J Pathol. 2011 Feb;178(2):754-63. doi: 10.1016/j.ajpath.2010.10.015.