Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/ijms232113210
Keywords
cry; per; bmal1; clock; survivin; sirtuin1; birc5
Funding
- Slovak Research and Development Agency [APVV-16-0209, APVV-20-0241]
- Scientific Grant Agency of the Ministry of Education, science, research and sport of the Slovak Republic
- Slovak Academy of Sciences [VEGA 1/0679/19]
Ask authors/readers for more resources
This study found that radiofrequency electromagnetic fields (RF-EMF) had a significant impact on the regulation of the peripheral circadian oscillator mediated by miR-34a in colorectal cancer cells. The inhibitory effects of miR-34a on clock gene expression, cell proliferation, and migration were weakened by exposure to RF-EMF.
Radiofrequency electromagnetic fields (RF-EMF) exert pleiotropic effects on biological processes including circadian rhythms. miR-34a is a small non-coding RNA whose expression is modulated by RF-EMF and has the capacity to regulate clock gene expression. However, interference between RF-EMF and miR-34a-mediated regulation of the circadian oscillator has not yet been elucidated. Therefore, the present study was designed to reveal if 24 h exposure to 2.4 GHz RF-EMF influences miR-34a-induced changes in clock gene expression, migration and proliferation in colorectal cancer cell line DLD1. The effect of up- or downregulation of miR-34a on DLD1 cells was evaluated using real-time PCR, the scratch assay test and the MTS test. Administration of miR-34a decreased the expression of per2, bmal1, sirtuin1 and survivin and inhibited proliferation and migration of DLD1 cells. When miR-34a-transfected DLD1 cells were exposed to 2.4 GHz RF-EMF, an increase in cry1 mRNA expression was observed. The inhibitory effect of miR-34a on per2 and survivin was weakened and abolished, respectively. The effect of miR-34a on proliferation and migration was eliminated by RF-EMF exposure. In conclusion, RF-EMF strongly influenced regulation mediated by the tumour suppressor miR-34a on the peripheral circadian oscillator in DLD1 cells.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available