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| Ref Type | Journal Article | ||||||||||||
| PMID | (22440753) | ||||||||||||
| Authors | Waaler J, Machon O, Tumova L, Dinh H, Korinek V, Wilson SR, Paulsen JE, Pedersen NM, Eide TJ, Machonova O, Gradl D, Voronkov A, von Kries JP, Krauss S | ||||||||||||
| Title | A novel tankyrase inhibitor decreases canonical Wnt signaling in colon carcinoma cells and reduces tumor growth in conditional APC mutant mice. | ||||||||||||
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| Abstract Text | Increased nuclear accumulation of β-catenin, a mediator of canonical Wnt signaling, is found in numerous tumors and is frequently associated with tumor progression and metastasis. Inhibition of Wnt/β-catenin signaling therefore is an attractive strategy for anticancer drugs. In this study, we have identified a novel small molecule inhibitor of the β-catenin signaling pathway, JW55, that functions via inhibition of the PARP domain of tankyrase 1 and tankyrase 2 (TNKS1/2), regulators of the β-catenin destruction complex. Inhibition of TNKS1/2 poly(ADP-ribosyl)ation activity by JW55 led to stabilization of AXIN2, a member of the β-catenin destruction complex, followed by increased degradation of β-catenin. In a dose-dependent manner, JW55 inhibited canonical Wnt signaling in colon carcinoma cells that contained mutations in either the APC (adenomatous polyposis coli) locus or in an allele of β-catenin. In addition, JW55 reduced XWnt8-induced axis duplication in Xenopus embryos and tamoxifen-induced polyposis formation in conditional APC mutant mice. Together, our findings provide a novel chemotype for targeting canonical Wnt/β-catenin signaling through inhibiting the PARP domain of TNKS1/2. | ||||||||||||
| Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
|---|
| Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
|---|---|---|---|---|
| JW55 | JW 55 | Tankyrase Inhibitor 11 | JW55 selectively inhibits Wnt/beta-catenin-mediated signaling by inhibiting tankyrase1/2, thus stabilizing axin and stimulating beta-catenin degradation, which prevents cell division and decreases tumor growth (PMID: 22440753). |
| Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
|---|
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| APC inact mut | colon cancer | sensitive | JW55 | Preclinical | Actionable | In a preclinical study, JW55 inhibited proliferation of colorectal cancer cells with an APC truncation mutation in culture and decreased tumor development in a mouse model expressing a conditional APC truncation mutation (PMID: 22440753). | 22440753 |