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Ref Type | Journal Article | ||||||||||||
PMID | (21321609) | ||||||||||||
Authors | Wang W, Liu H, Wang S, Hao X, Li L | ||||||||||||
Title | A diterpenoid derivative 15-oxospiramilactone inhibits Wnt/β-catenin signaling and colon cancer cell tumorigenesis. | ||||||||||||
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Abstract Text | The Wnt/β-catenin signaling pathway is a highly conserved pathway in organism evolution and regulates many biological processes. Aberrant activation of the Wnt/β-catenin signaling pathway is closely related to tumorigenesis. In order to identify potent small molecules to treat the over-activated Wnt signaling-mediated cancer, such as colon cancer, we established a mammalian cell line-based reporter gene screening system. The screen revealed a diterpenoid derivative, 15-oxospiramilactone (NC043) that inhibits Wnt3a or LiCl-stimulated Top-flash reporter activity in HEK293T cells and growth of colon cancer cells, SW480 and Caco-2. Treatment of SW480 cells with NC043 led to decreases in the mRNA and/or protein expression of Wnt target genes Axin2, Cyclin D1 and Survivin , as well as decreases in the protein levels of Cdc25c and Cdc2. NC043 did not affect the cytosol-nuclear distribution and protein level of soluble β-catenin, but decreased β-catenin/TCF4 association in SW480 cells. Moreover, NC043 inhibited anchorage-independent growth and xenograft tumorigenesis of SW480 cells. Collectively these results demonstrate that NC043 is a novel small molecule that inhibits canonical Wnt signaling downstream of β-catenin stability and may be a potential compound for treating colorectal cancer. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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NC043 | CTNNB1 Inhibitor 27 | NC043 inhibits the interaction of CTNNB1 with TCF7L2 to block Wnt signaling resulting in apoptosis and interruption of the cell cycle (PMID: 21321609, PMID: 30774387). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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APC inact mut | colorectal cancer | sensitive | NC043 | Preclinical - Cell line xenograft | Actionable | In a preclinical study, NC043 inhibited Wnt pathway activation and growth of colorectal cancer cell lines harboring APC truncation mutations in culture and in cell line xenograft models (PMID: 21321609). | 21321609 |