Chrysin Induces Apoptosis via the MAPK Pathway and Regulates ERK/mTOR-Mediated Autophagy in MC-3 Cells
Gi-Hwan Jung1, Jae-Han Lee1, So-Hee Han1
1Department of Companion and Laboratory Animal Science, Kongju National University, Daehak-ro, Yesan-gun 32439, Chungcheongnam-do, Republic of Korea.
Abstract:
Chrysin is a flavonoid found abundantly in substances, such as honey and phytochemicals, and is known to exhibit anticancer effects against various cancer cells. Nevertheless, the anticancer effect of chrysin against oral cancer has not yet been verified. Furthermore, the mechanism underlying autophagy is yet to be clearly elucidated. Thus, this study investigated chrysin-mediated apoptosis and autophagy in human mucoepidermoid carcinoma (MC-3) cells. The change in MC-3 cell viability was examined using a 3-(4,5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide cell viability assay, as well as 40,6-diamidino-2-phenylindole, annexin V, and propidium iodide staining. Western blotting was used to analyze the proteins related to apoptosis and the mitogen-activated protein kinase (MAPK) pathway. In addition, the presence or absence of autophagy and changes in the expression of related proteins were investigated using acridine orange staining and Western blot. The results suggested that chrysin induced apoptosis and autophagy in MC-3 oral cancer cells via the MAPK/extracellular signal-regulated kinase pathway. Moreover, the induced autophagy exerted a cytoprotective effect against apoptosis. Thus, the further reduced cell viability due to autophagy as well as apoptosis induction highlight therapeutic potential of chrysin for oral cancer.
Insights
Chrysin triggers apoptosis and autophagy in oral cancer cells, potentially offering a new therapeutic strategy. Induced autophagy provides a protective effect against cell death, highlighting chrysin
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Chrysin, a flavonoid from honey and phytochemicals, shows anticancer properties.
- Its effects on oral cancer and the role of autophagy remain unclear.
Purpose of the Study:
- Investigate chrysin-induced apoptosis and autophagy in human mucoepidermoid carcinoma (MC-3) cells.
- Elucidate the underlying molecular mechanisms, including the MAPK pathway.
Main Methods:
- Cell viability assays (MTT, DAPI, Annexin V/PI staining).
- Western blotting for apoptosis and MAPK pathway proteins.
- Acridine orange staining for autophagy detection.
Main Results:
- Chrysin induced apoptosis and autophagy in MC-3 oral cancer cells.
- The MAPK/ERK pathway was involved in chrysin's effects.
- Autophagy exhibited a cytoprotective role against apoptosis.
Conclusions:
- Chrysin effectively induces apoptosis and autophagy in oral cancer cells.
- The interplay between apoptosis and autophagy suggests therapeutic potential.
- Further research into chrysin as an oral cancer treatment is warranted.
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