14-3-3ζ Turns TGF-β's Function from Tumor Suppressor to Metastasis Promoter in Breast Cancer by Contextual Changes of Smad Partners from p53 to Gli2

Jia Xu; Sunil Acharya; Ozgur Sahin; Qingling Zhang; Yohei Saito; Jun Yao; Hai Wang; Ping Li; Lin Zhang; Frank J. Lowery; Wen Ling Kuo; Yi Xiao; Joe Ensor; Aysegul A. Sahin; Xiang H.F. Zhang; Mien Chie Hung; Jitao David Zhang; Dihua Yu

doi:10.1016/j.ccell.2014.11.025

14-3-3ζ Turns TGF-β's Function from Tumor Suppressor to Metastasis Promoter in Breast Cancer by Contextual Changes of Smad Partners from p53 to Gli2

Jia Xu, Sunil Acharya, Ozgur Sahin, Qingling Zhang, Yohei Saito, Jun Yao, Hai Wang, Ping Li, Lin Zhang, Frank J. Lowery, Wen Ling Kuo, Yi Xiao, Joe Ensor, Aysegul A. Sahin, Xiang H.F. Zhang, Mien Chie Hung, Jitao David Zhang, Dihua Yu

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Abstract

Transforming growth factor β (TGF-β) functions as a tumor suppressor in premalignant cells but as a metastasis promoter in cancer cells. The dichotomous functions of TGF-β are proposed to be dictated by different partners of its downstream effector Smads. However, the mechanism for the contextual changes of Smad partners remained undefined. Here, we demonstrate that 14-3-3ζ destabilizes p53, a Smad partner in premalignant mammary epithelial cells, by downregulating 14-3-3σ, thus turning off TGF-β's tumor suppression function. Conversely, 14-3-3ζ stabilizes Gli2 in breast cancer cells, and Gli2 partners with Smads to activate PTHrP and promote TGF-β-induced bone metastasis. The 14-3-3ζ-driven contextual changes of Smad partners from p53 to Gli2 may serve as biomarkers and therapeutic targets of TGF-β-mediated cancer progression.

Original language	English (US)
Pages (from-to)	177-192
Number of pages	16
Journal	Cancer cell
Volume	27
Issue number	2
DOIs	https://doi.org/10.1016/j.ccell.2014.11.025
State	Published - Feb 9 2015

ASJC Scopus subject areas

Oncology
Cell Biology
Cancer Research

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Xu, J., Acharya, S., Sahin, O., Zhang, Q., Saito, Y., Yao, J., Wang, H., Li, P., Zhang, L., Lowery, F. J., Kuo, W. L., Xiao, Y., Ensor, J., Sahin, A. A., Zhang, X. H. F., Hung, M. C., Zhang, J. D., & Yu, D. (2015). 14-3-3ζ Turns TGF-β's Function from Tumor Suppressor to Metastasis Promoter in Breast Cancer by Contextual Changes of Smad Partners from p53 to Gli2. Cancer cell, 27(2), 177-192. https://doi.org/10.1016/j.ccell.2014.11.025

Xu, J, Acharya, S, Sahin, O, Zhang, Q, Saito, Y , Yao, J, Wang, H, Li, P, Zhang, L, Lowery, FJ, Kuo, WL, Xiao, Y, Ensor, J, Sahin, AA, Zhang, XHF, Hung, MC, Zhang, JD & Yu, D 2015, '14-3-3ζ Turns TGF-β's Function from Tumor Suppressor to Metastasis Promoter in Breast Cancer by Contextual Changes of Smad Partners from p53 to Gli2', Cancer cell, vol. 27, no. 2, pp. 177-192. https://doi.org/10.1016/j.ccell.2014.11.025

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abstract = "Transforming growth factor β (TGF-β) functions as a tumor suppressor in premalignant cells but as a metastasis promoter in cancer cells. The dichotomous functions of TGF-β are proposed to be dictated by different partners of its downstream effector Smads. However, the mechanism for the contextual changes of Smad partners remained undefined. Here, we demonstrate that 14-3-3ζ destabilizes p53, a Smad partner in premalignant mammary epithelial cells, by downregulating 14-3-3σ, thus turning off TGF-β's tumor suppression function. Conversely, 14-3-3ζ stabilizes Gli2 in breast cancer cells, and Gli2 partners with Smads to activate PTHrP and promote TGF-β-induced bone metastasis. The 14-3-3ζ-driven contextual changes of Smad partners from p53 to Gli2 may serve as biomarkers and therapeutic targets of TGF-β-mediated cancer progression.",

author = "Jia Xu and Sunil Acharya and Ozgur Sahin and Qingling Zhang and Yohei Saito and Jun Yao and Hai Wang and Ping Li and Lin Zhang and Lowery, {Frank J.} and Kuo, {Wen Ling} and Yi Xiao and Joe Ensor and Sahin, {Aysegul A.} and Zhang, {Xiang H.F.} and Hung, {Mien Chie} and Zhang, {Jitao David} and Dihua Yu",

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AU - Ensor, Joe

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14-3-3ζ Turns TGF-β's Function from Tumor Suppressor to Metastasis Promoter in Breast Cancer by Contextual Changes of Smad Partners from p53 to Gli2

Abstract

ASJC Scopus subject areas

MD Anderson CCSG core facilities

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