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Updated: Jul 14, 2026
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Standardized Methods for Measuring Induction of the Heat Shock Response in Caenorhabditis elegans
Published on: July 3, 2020
Expression of HSP72 after ELF-EMF exposure in three cell lines
Eric Gottwald1, Werner Sontag, Brigitte Lahni
1Forschungszentrum Karlsruhe, Institut für Biologische Grenzflächen, Eggenstein-Leopoldshafen, Germany. eric.gottwald@ibg.fzk.de
Bioelectromagnetics
|May 18, 2007
Summary
Electromagnetic fields did not significantly alter heat shock protein levels. While heat shock factor (HSF), HSP72 mRNA, and heat shock proteins (HSPs) can be induced by magnetic fields, this study found only some induction of HSP72 mRNA, not protein.
Area of Science:
- Cell biology
- Biophysics
- Molecular biology
Background:
- Magnetic fields (MFs) ranging from microT to mT are reported to induce heat shock factor, HSP72 mRNA, or heat shock proteins (HSPs) in cells.
- The relationship between MF exposure and HSP expression requires further investigation.
Purpose of the Study:
- To investigate the effects of specific electromagnetic field (EMF) parameters on HSP72 mRNA transcription and intracellular HSP72 protein levels.
- To determine if MF-induced HSP72 mRNA levels correlate with protein expression.
Main Methods:
- Three cell lines (HL-60, H9c2, Girardi heart) were exposed to EMFs (2 microT to 4 mT, 50 Hz, 15–30 min).
- HSP72 mRNA transcription and intracellular HSP72 protein content were measured.
- Effects were assessed across various treatment schemes.
Main Results:
- No significant effect on HSP72 protein levels was observed in HL-60 or Girardi heart cells.
- HSP72 mRNA induction was observed to some extent in all tested cell lines under specific EMF parameter combinations.
- HSP72 mRNA transcription and translation were not consistently coupled.
Conclusions:
- EMF exposure at the tested parameters did not lead to increased HSP72 protein levels.
- Increased HSP72 mRNA levels following EMF exposure do not necessarily indicate downstream protein production.
- Correlation between HSP72 mRNA and protein levels is crucial for interpreting EMF effects on cellular stress responses.
