Luteolin reverses OPCML methylation to inhibit proliferation of breast cancer MDA-MB-231 cells.
10.12122/j.issn.1673-4254.2020.04.16
- Author:
Xinmin DONG
1
;
Ti ZHENG
2
;
Ziying ZHANG
3
;
Xiling BAI
4
;
Hua LI
1
;
Jian ZHANG
5
Author Information
1. Department of Oncology, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, 010010, China.
2. Medical Departmentn, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, 010010, China.
3. Department of Basic Medicine, School of Pharmacology of Inner Mongolia Medical University, Hohhot 010110, China.
4. Department of Interventional Riadiology, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot 010010, China.
5. Department of Radiotherapy, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, China.
- Publication Type:Journal Article
- Keywords:
OPCML;
breast cancer;
luteolin;
methylation
- MeSH:
Apoptosis;
Breast Neoplasms;
Cell Adhesion Molecules;
Cell Line, Tumor;
Cell Proliferation;
GPI-Linked Proteins;
Humans;
Luteolin
- From:
Journal of Southern Medical University
2020;40(4):550-555
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To observe the effect of luteolin on the proliferation and expression of OPCML in breast cancer cell line MDA-MB-231.
METHODS:Cultured MDA-MB-231 cells were treated with luteolin at the concentrations of 5, 10 and 20 μmol/L for 24 or 48 h. MTT assay was used to detect cell proliferation and flow cytometry was used to detect the cell apoptosis. The expressions of OPCML mRNA and protein were detected using real-time quantitative PCR and Western blotting, respectively. OPCML gene methylation in the promoter region was detected using methylation-specific PCR (MSP), and the activity of methylase in the cells was analyzed.
RESULTS:MTT assay showed that treatment with luteolin at 5, 10 and 20 μmol/L for 24 h concentration-dependently decreased the viability of MDA-MB-231 cells ( < 0.05). Flow cytometry also showed that luteolin at different concentrations could induce apoptosis of MDA-MB-231 cells ( < 0.05). Luteolin dose-dependently induced the expression of OPCML mRNA and protein in MDA-MB-231 cells ( < 0.05), down-regulated the methylation status in the promoter region of OPCML gene, up-regulated the level of non-methylated OPCML, and reduced the activity of methylase in the cells ( < 0.05).
CONCLUSIONS:Luteolin inhibits the proliferation of MDA-MB-231 breast cancer cells probably by upregulating OPCML expression and its demethylation.
