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Extremely low- frequency electromagnetic field induces acetylation of heat shock proteins and enhances protein folding

No Effects Found

Huang Z, Ito M, Zhang S, Toda T, Takeda J-I, Ogi T, Ohno K · 2023

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Weak electromagnetic fields activated protective stress responses in cells within 3 hours, but chronic activation of emergency systems raises unanswered long-term health questions.

Plain English Summary

Summary written for general audiences

Researchers exposed mouse and human cells to extremely low-frequency electromagnetic fields (ELF-EMF) at intensities as weak as 10 µT and found the exposure triggered beneficial changes in heat shock proteins, which help cells fold proteins correctly. After 3 hours of exposure, cells showed increased protein acetylation, enhanced protein folding, reduced protein aggregates, and improved cell viability. The findings suggest weak EMF exposures can activate cellular stress response mechanisms that potentially protect against protein misfolding.

Cite This Study
Huang Z, Ito M, Zhang S, Toda T, Takeda J-I, Ogi T, Ohno K (2023). Extremely low- frequency electromagnetic field induces acetylation of heat shock proteins and enhances protein folding.
Show BibTeX
@article{huang_z_ito_m_zhang_s_toda_t_takeda_j_i_ogi_t_ohno_k_ce4051,
  author = {Huang Z and Ito M and Zhang S and Toda T and Takeda J-I and Ogi T and Ohno K},
  title = {Extremely low- frequency electromagnetic field induces acetylation of heat shock proteins and enhances protein folding},
  year = {2023},
  doi = {10.1016/j.ecoenv.2023.115482},
  
}
DOI: 10.1016/j.ecoenv.2023.115482PubMed: 37717354

Quick Questions About This Study

The researchers used extremely low-frequency electromagnetic fields at 10 µT (microtesla), which is considered quite weak. For comparison, this is similar to the magnetic field strength you'd encounter standing close to many household appliances or near power lines. The study specifically examined these weak fields because they're common in industrialized environments.
The cellular changes occurred after 3 hours of continuous EMF exposure. At this point, researchers observed increased acetylation of heat shock proteins, enhanced protein folding, and improved cell viability. Interestingly, these effects returned to normal baseline levels by 12 hours, suggesting the response was temporary.
In this short-term study, the EMF exposure appeared beneficial. Cells showed reduced protein aggregates (misfolded proteins that can cause cellular damage), increased ATP energy production, and improved cell survival rates. However, the study only examined effects up to 12 hours and didn't address whether repeated or chronic activation of these stress responses could be problematic.
Heat shock proteins are molecular chaperones that help other proteins fold correctly and repair or remove damaged proteins. They're part of your cells' emergency response system, activated during stress. HSP70 and HSP90, the proteins affected in this study, are critical for cell survival under challenging conditions and help prevent protein misfolding diseases.
The researchers suggest potential therapeutic applications since the EMF exposure improved protein folding and cell viability. However, this was a laboratory study on isolated cells with short exposure periods. We don't know if chronically activating cellular stress responses is safe or beneficial long-term, and human therapeutic applications would require extensive additional research and clinical trials.