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Determining the Optimal Inhibitory Frequency for Cancerous Cells Using Tumor Treating Fields TTFields
Published on: May 4, 2017
Extremely low frequency electromagnetic fields affect proliferation and mitochondrial activity of human cancer cell
Michele Destefanis1, Marta Viano1, Christian Leo2
1a Department of Oncology , University of Torino , Torino , Italy ;
Purpose:
To date, the effects of electromagnetic fields on cell metabolism have been overlooked. The objective of the present study was to investigate the influence of extremely low frequency electromagnetic fields (ELF-EMF) over mitochondrial metabolism and the consequent impact on cancer cell growth.
Materials And Methods:
The effects of ELF-EMF on cancer growth were investigated in several human cancer cell lines by crystal violet assay. The modulation of mitochondrial activity was assessed by cytofluorimetric evaluation of membrane potential and by real-time quantification of mitochondrial transcription. Moreover the expression of several mitochondrial proteins and their levels in the organelle were evaluated.
Results:
The long-term exposure to ELF-EMF reduced the proliferation of several cancer cell lines and the effect was associated to an increased mitochondrial activity without evident changes in ATP levels. The results of our experiments excluded a transcriptional modulation of mitochondrial respiratory complexes, rather suggesting that ELF-EMF increased the energy demand. The altered mitochondrial metabolism led to changes in mitochondrial protein profile. In fact we found a downregulated expression of mitochondrial phospho-ERK, p53 and cytochrome c.
Conclusion:
The results of the present study indicate that ELF-EMF can negatively modulate cancer cell growth increasing respiratory activity of cells and altering mitochondrial protein expression.
Insights
Extremely low frequency electromagnetic fields (ELF-EMF) exposure reduced cancer cell growth by increasing mitochondrial activity and altering protein expression, suggesting a novel therapeutic avenue for cancer treatment.
Area of Science:
- Biophysics
- Cell Biology
- Cancer Research
Background:
- Mitochondrial metabolism's role in cancer is critical.
- The impact of electromagnetic fields on cell metabolism remains largely unexplored.
- Extremely low frequency electromagnetic fields (ELF-EMF) may influence cellular processes.
Purpose of the Study:
- To investigate the effects of ELF-EMF on mitochondrial metabolism.
- To determine the impact of ELF-EMF on cancer cell proliferation.
- To elucidate the relationship between ELF-EMF, mitochondrial function, and cancer growth.
Main Methods:
- Human cancer cell lines were exposed to ELF-EMF.
- Cell proliferation was assessed using crystal violet assay.
- Mitochondrial activity was evaluated via membrane potential and transcription analysis.
- Mitochondrial protein expression was quantified.
Main Results:
- Long-term ELF-EMF exposure inhibited proliferation in multiple cancer cell lines.
- Mitochondrial activity increased with ELF-EMF exposure, without significant ATP level changes.
- Transcriptional modulation of respiratory complexes was ruled out; increased energy demand was suggested.
- Altered mitochondrial metabolism resulted in changes to protein profiles, including downregulation of phospho-ERK, p53, and cytochrome c.
Conclusions:
- ELF-EMF exposure negatively modulates cancer cell growth.
- Increased cellular respiratory activity and altered mitochondrial protein expression are key effects.
- ELF-EMF influences cancer cell metabolism and proliferation through mitochondrial pathways.
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