AKT1-targeted proapoptotic activity of compound K in human breast cancer cells
Eunju Choi1, Eunji Kim1, Ji Hye Kim1
1Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Republic of Korea.
Background:
Breast cancer is a severe disease and the second leading cause of cancer death in women worldwide. To surmount this, various diagnosis and treatment options for breast cancer have been developed. One of the most effective strategies for cancer treatment is to induce apoptosis using naturally occurring compounds. Compound K (CK) is a ginseng saponin metabolite generated by human intestinal bacteria. CK has been studied for its cardioprotective, antiinflammatory, and liver-protective effects; however, the role of CK in breast cancer is not fully understood.
Methods:
To investigate the anticancer effects of CK in SKBR3 and MDA-MB-231 cells, cell viability assays and flow cytometry analysis were used. In addition, the direct targets of CK anticancer activity were identified using immunoblotting analysis and overexpression experiments. Invasion, migration, and clonogenic assays were carried out to determine the effects of CK on cancer metastasis.
Results:
CK-induced cell apoptosis in SKBR3 cells as determined through 3-(4-5-dimethylthiazol-2-yl)-2-5-diphenyltetrazolium bromide assays, propidium iodide (PI) and annexin V staining, and morphological changes. CK increased the cleaved forms of caspase-7, caspase-8, and caspase-9, whereas the expression of Bcl-2 was reduced by CK. In assays probing the cell survival pathway, CK activated only AKT1 and not AKT2. Moreover, CK inhibited breast cancer cell invasion, migration, and colony formation. Through regulation of AKT1 activity, CK exerts anticancer effects by inducing apoptosis.
Conclusion:
Our results suggest that CK could be used as a therapeutic compound for breast cancer.
Insights
Compound K (CK), a ginseng metabolite, induces apoptosis and inhibits metastasis in breast cancer cells. This natural compound shows promise as a potential therapeutic agent for breast cancer treatment.
Area of Science:
- Natural Products Chemistry
- Cancer Biology
- Pharmacology
Background:
- Breast cancer is a leading cause of cancer death globally.
- Apoptosis induction via natural compounds is a key cancer treatment strategy.
- Compound K (CK), a ginseng metabolite, has known protective effects but its role in breast cancer is unclear.
Purpose of the Study:
- To investigate the anticancer effects of Compound K (CK) on breast cancer cells.
- To identify the molecular targets and mechanisms underlying CK's anti-cancer activity.
- To evaluate CK's impact on breast cancer cell metastasis.
Main Methods:
- Cell viability assays (MTT) and flow cytometry (PI, Annexin V) were used.
- Immunoblotting and overexpression experiments identified direct molecular targets.
- Invasion, migration, and clonogenic assays assessed metastatic potential.
Main Results:
- CK induced apoptosis in SKBR3 and MDA-MB-231 cells.
- CK increased cleaved caspases (7, 8, 9) and decreased Bcl-2 expression.
- CK inhibited invasion, migration, and colony formation, primarily through AKT1 activation.
Conclusions:
- Compound K effectively induces apoptosis and inhibits metastasis in breast cancer cells.
- CK's mechanism involves regulating the AKT1 pathway.
- CK demonstrates potential as a therapeutic compound for breast cancer.
More Related Videos
Related Concept Videos
02:57Targeted Cancer Therapies
There are several types of targeted therapies against...
01:31The Intrinsic Apoptotic Pathway
01:17The Extrinsic Apoptotic Pathway
02:34Inhibition of Cdk Activity
02:50Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
01:30Apoptosis