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Δευτέρα 14 Αυγούστου 2017

Targeting SRC Coactivators Blocks the Tumor-Initiating Capacity of Cancer Stem-like Cells

Tumor-initiating cells (TIC) represent cancer stem-like cell (CSC) subpopulations within tumors that are thought to give rise to recurrent cancer after therapy. Identifying key regulators of TIC/CSC maintenance is essential for the development of therapeutics designed to limit recurrence. The steroid receptor coactivator 3 (SRC-3) is overexpressed in a wide range of cancers, driving tumor initiation, cell proliferation, and metastasis. Here we report that SRC-3 supports the TIC/CSC state and induces an epithelial-to-mesenchymal transition (EMT) by driving expression of the master EMT regulators and stem cell markers. We also show that inhibition of SRC-3 and SRC-1 with SI-2, a second-generation SRC-3/SRC-1 small-molecule inhibitor, targets the CSC/TIC population both in vitro and in vivo. Collectively, these results identify SRC coactivators as regulators of stem-like capacity in cancer cells and that these coactivators can serve as potential therapeutic targets to prevent the recurrence of cancer. Cancer Res; 77(16); 4293–304. ©2017 AACR.

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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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