c-Myb Enhances Breast Cancer Invasion and Metastasis through the Wnt/β-Catenin/Axin2 Pathway.

Li Y, Jin K, van Pelt GW, van Dam H, Yu X, Mesker WE, Ten Dijke P, Zhou F, Zhang L

Cancer Res. 76 (11) 3364-3375 [2016-06-01; online 2016-04-05]

The molecular underpinnings of aggressive breast cancers remain mainly obscure. Here we demonstrate that activation of the transcription factor c-Myb is required for the prometastatic character of basal breast cancers. An analysis of breast cancer patients led us to identify c-Myb as an activator of Wnt/β-catenin signaling. c-Myb interacted with the intracellular Wnt effector β-catenin and coactivated the Wnt/β-catenin target genes Cyclin D1 and Axin2 Moreover, c-Myb controlled metastasis in an Axin2-dependent manner. Expression microarray analyses revealed a positive association between Axin2 and c-Myb, a target of the proinflammatory cytokine IL1β that was found to be required for IL1β-induced breast cancer cell invasion. Overall, our results identified c-Myb as a promoter of breast cancer invasion and metastasis through its ability to activate Wnt/β-catenin/Axin2 signaling. Cancer Res; 76(11); 3364-75. ©2016 AACR.

Affiliated researcher

PubMed 27197202

DOI 10.1158/0008-5472.CAN-15-2302

Crossref 10.1158/0008-5472.CAN-15-2302

pii: 0008-5472.CAN-15-2302