TY - JOUR
T1 - 14-3-3ζ Cooperates with ErbB2 to Promote Ductal Carcinoma In Situ Progression to Invasive Breast Cancer by Inducing Epithelial-Mesenchymal Transition
AU - Lu, Jing
AU - Guo, Hua
AU - Treekitkarnmongkol, Warapen
AU - Li, Ping
AU - Zhang, Jian
AU - Shi, Bin
AU - Ling, Chen
AU - Zhou, Xiaoyan
AU - Chen, Tongzhen
AU - Chiao, Paul J.
AU - Feng, Xinhua
AU - Seewaldt, Victoria L.
AU - Muller, William J.
AU - Sahin, Aysegul
AU - Hung, Mien Chie
AU - Yu, Dihua
N1 - Funding Information:
We thank J.M. Shu, Dr. J.P. Issa, and Dr. X. Lin (MDACC), and Dr. Y. Higashi (Osaka University) for their technical support and ZFHX1B antiserum. D.Y. is the Nylene Eckles Distinguished Professor in Breast Cancer Research at MDACC. W.T. is partially supported by the Royal Golden Jubilee Program, Thailand Research Fund. This work is supported by National Institutes of Health grants P30-CA 16672 (MDACC), RO1-CA109570, RO1-CA112567, PO1-CA099031 project 4, and P50 CA116199 project 4; Department of Defense Center of Excellence grant subproject W81XWH-06-2-0033 and Synergistic Award W81XWH-08-1-0712; and Susan G. Komen Breast Cancer Foundation Promise Grant KG091020 (D.Y.).
PY - 2009/9/8
Y1 - 2009/9/8
N2 - ErbB2, a metastasis-promoting oncoprotein, is overexpressed in ∼25% of invasive/metastatic breast cancers, but in 50%-60% of noninvasive ductal carcinomas in situ (DCIS). It has been puzzling how a subset of ErbB2-overexpressing DCIS develops into invasive breast cancer (IBC). We found that co-overexpression of 14-3-3ζ in ErbB2-overexpressing DCIS conferred a higher risk of progression to IBC. ErbB2 and 14-3-3ζ overexpression, respectively, increased cell migration and decreased cell adhesion, two prerequisites of tumor cell invasion. 14-3-3ζ overexpression reduced cell adhesion by activating the TGF-β/Smads pathway that led to ZFHX1B/SIP-1 upregulation, E-cadherin loss, and epithelial-mesenchymal transition. Importantly, patients whose breast tumors overexpressed both ErbB2 and 14-3-3ζ had higher rates of metastatic recurrence and death than those whose tumors overexpressed only one.
AB - ErbB2, a metastasis-promoting oncoprotein, is overexpressed in ∼25% of invasive/metastatic breast cancers, but in 50%-60% of noninvasive ductal carcinomas in situ (DCIS). It has been puzzling how a subset of ErbB2-overexpressing DCIS develops into invasive breast cancer (IBC). We found that co-overexpression of 14-3-3ζ in ErbB2-overexpressing DCIS conferred a higher risk of progression to IBC. ErbB2 and 14-3-3ζ overexpression, respectively, increased cell migration and decreased cell adhesion, two prerequisites of tumor cell invasion. 14-3-3ζ overexpression reduced cell adhesion by activating the TGF-β/Smads pathway that led to ZFHX1B/SIP-1 upregulation, E-cadherin loss, and epithelial-mesenchymal transition. Importantly, patients whose breast tumors overexpressed both ErbB2 and 14-3-3ζ had higher rates of metastatic recurrence and death than those whose tumors overexpressed only one.
KW - CELLCYCLE
UR - http://www.scopus.com/inward/record.url?scp=69249240289&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69249240289&partnerID=8YFLogxK
U2 - 10.1016/j.ccr.2009.08.010
DO - 10.1016/j.ccr.2009.08.010
M3 - Article
C2 - 19732720
AN - SCOPUS:69249240289
SN - 1535-6108
VL - 16
SP - 195
EP - 207
JO - Cancer cell
JF - Cancer cell
IS - 3
ER -