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- W4361242007 abstract "<div>Abstract<p>Excessive signaling from the Wnt pathway is associated with numerous human cancers. Using a high throughput screen designed to detect inhibitors of Wnt/β-catenin signaling, we identified a series of acyl hydrazones that act downstream of the β-catenin destruction complex to inhibit both Wnt-induced and cancer-associated constitutive Wnt signaling via destabilization of β-catenin. We found that these acyl hydrazones bind iron <i>in vitro</i> and in intact cells and that chelating activity is required to abrogate Wnt signaling and block the growth of colorectal cancer cell lines with constitutive Wnt signaling. In addition, we found that multiple iron chelators, desferrioxamine, deferasirox, and ciclopirox olamine similarly blocked Wnt signaling and cell growth. Moreover, in patients with AML administered ciclopirox olamine, we observed decreased expression of the Wnt target gene AXIN2 in leukemic cells. The novel class of acyl hydrazones would thus be prime candidates for further development as chemotherapeutic agents. Taken together, our results reveal a critical requirement for iron in Wnt signaling and they show that iron chelation serves as an effective mechanism to inhibit Wnt signaling in humans. <i>Cancer Res; 71(24); 7628–39. ©2011 AACR</i>.</p></div>" @default.
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- W4361242007 date "2023-03-30" @default.
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- W4361242007 title "Data from Wnt Inhibitor Screen Reveals Iron Dependence of β-Catenin Signaling in Cancers" @default.
- W4361242007 doi "https://doi.org/10.1158/0008-5472.c.6502791.v1" @default.
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