Effect of luteolin on the methylation status of the OPCML gene and cell growth in breast cancer cells

  • Authors:
    • Xinmin Dong
    • Jian Zhang
    • Fan Yang
    • Jing Wu
    • Rui Cai
    • Tian Wang
    • Jiren Zhang
  • View Affiliations

  • Published online on: July 26, 2018     https://doi.org/10.3892/etm.2018.6526
  • Pages: 3186-3194
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Abstract

The present study aimed to investigate the effect of luteolin on the methylation of opioid binding protein/cell adhesion molecule (OPCML) in breast cancer cells, as well as its underlying mechanism of action. Human breast cancer cell lines BT474 and MCF‑7 were cultured in RPMI‑1640 medium supplemented with 10% fetal bovine serum. The cells were treated with 0‑30 µmol/l luteolin prior to investigation. Reverse transcription‑quantitative polymerase chain reaction and western blot analysis were used to determine the mRNA and protein expression, respectively. High performance liquid chromatography and electrosprary ionization‑mass spectrometry was used to analyze the methylation of the OPCML promoter region and whole genome. The methylation activity in the cell nucleus was determined using a DNA methyltransferase catalytic test. ELISA analysis was used to detect changes in the activity of transcription factors Sp1 and nuclear factor (NF)‑κB. An MTT assay was performed to determine cell proliferation, while flow cytometry was used to detect cell cycle stage and apoptosis. Luteolin effectively upregulated the expression of OPCML in breast cancer cells. Luteolin activated OPCML by reducing intracellular methylation levels. Luteolin downregulated intracellular methylation levels by decreasing Sp1 and NF‑κB activities. Luteolin affected the expression of DNMT1 and OPCML by downregulating Sp1 activity. Luteolin inhibited the proliferation and induced the apoptosis of BT474 and MCF‑7 cells. The results of the present study suggest that luteolin inhibits the growth of breast cancer cells by decreasing the methylation and upregulating the expression of the OPCML gene.

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Copy and paste a formatted citation
APA
Dong, X., Zhang, J., Yang, F., Wu, J., Cai, R., Wang, T., & Zhang, J. (2018). Effect of luteolin on the methylation status of the OPCML gene and cell growth in breast cancer cells. Experimental and Therapeutic Medicine, 16, 3186-3194. https://doi.org/10.3892/etm.2018.6526
MLA
Dong, X., Zhang, J., Yang, F., Wu, J., Cai, R., Wang, T., Zhang, J."Effect of luteolin on the methylation status of the OPCML gene and cell growth in breast cancer cells". Experimental and Therapeutic Medicine 16.4 (2018): 3186-3194.
Chicago
Dong, X., Zhang, J., Yang, F., Wu, J., Cai, R., Wang, T., Zhang, J."Effect of luteolin on the methylation status of the OPCML gene and cell growth in breast cancer cells". Experimental and Therapeutic Medicine 16, no. 4 (2018): 3186-3194. https://doi.org/10.3892/etm.2018.6526