Z-Ajoene Inhibits Growth of Colon Cancer by Promotion of CK1 alpha Dependent beta-Catenin Phosphorylationopen access
- Authors
- Li, Hua; Jeong, Ji Hye; Kwon, Sung Won; Lee, Sang Kook; Lee, Hwa Jin; Ryu, Jae-Ha
- Issue Date
- Feb-2020
- Publisher
- MDPI
- Keywords
- colon cancer; beta-catenin; Z-ajoene; phosphorylation; casein kinase 1 alpha
- Citation
- MOLECULES, v.25, no.3
- Journal Title
- MOLECULES
- Volume
- 25
- Number
- 3
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/2527
- DOI
- 10.3390/molecules25030703
- ISSN
- 1420-3049
- Abstract
- Aberrant activation of a Wnt/beta-catenin pathway results in nuclear accumulation of beta-catenin in colon cancer. Inhibiting beta-catenin is one strategy for treating colon cancer. Here, we identified Z-ajoene, a sulfur containing compound isolated from crushed garlic, as an inhibitor of colon cancer cell growth. Z-Ajoene repressed beta-catenin response transcriptional activity, intracellular beta-catenin levels, and its representative target protein levels (c-Myc and cyclin D1) in SW480 colon cancer cells. To clarify the regulatory mechanism of decreased beta-catenin levels, we examined the effect of Z-ajoene on beta-catenin phosphorylation, which is involved in beta-catenin degradation. Z-Ajoene promoted the phosphorylation of beta-catenin at Ser45 in a casein kinase 1 alpha (CK1 alpha)-dependent manner, which is an essential step in beta-catenin degradation in the cytosol. These findings indicate that Z-ajoene from garlic may be a potential chemotherapeutic agent by modulating CK1 alpha activity and the Wnt/beta-catenin signaling pathway.
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