Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Microarray gene expression profiling of a human glioblastoma cell line exposed in vitro to a 1.9 GHz pulse-modulated radiofrequency field.
Qutob SS, Chauhan V, Bellier PV, Yauk CL, Douglas GR, Berndt L, Williams A, Gajda GB, Lemay E, Thansandote A, McNamee JP. · 2006
View Original AbstractBrain cancer cells showed no gene expression changes after 4-hour RF exposure up to 10 W/kg, though longer-term effects remain unstudied.
Plain English Summary
Researchers exposed human brain cancer cells (glioblastoma) to 1.9 GHz radiofrequency radiation for 4 hours at power levels ranging from very low to quite high (0.1 to 10 W/kg SAR). They found no changes in gene expression at any exposure level, while heat treatment successfully triggered expected cellular stress responses. This suggests that RF fields at these levels don't alter how genes function in these particular brain cells.
Why This Matters
This study represents the type of controlled laboratory research we need to understand RF bioeffects, though it has important limitations. The researchers used SAR levels ranging from 0.1 W/kg (below typical cell phone exposure) to 10 W/kg (well above regulatory limits), providing a broad exposure range. The fact that heat treatment successfully triggered gene expression changes while RF did not suggests the experimental system was working properly. However, this single study examined only one cell line for 4 hours. The reality is that we use wireless devices for years, not hours, and different cell types may respond differently. While this study found no gene expression changes, it doesn't tell us about longer-term exposures or other potential biological effects. What this means for you is that this research adds to our understanding, but shouldn't be viewed as definitive proof that RF is completely safe for brain tissue.
Exposure Details
- SAR
- 0.1, 1.0 and 10.0 W/kg
- Source/Device
- 1.9 GHz
- Exposure Duration
- 4h
Where This Falls on the Concern Scale
Study Details
The purpose of this study was to assess the ability of exposure to a 1.9 GHz pulse-modulated RF field for 4 h at specific absorption rates (SARs) of 0.1, 1.0 and 10.0 W/kg to affect global gene expression in U87MG glioblastoma cells.
We found no evidence that non-thermal RF fields can affect gene expression in cultured U87MG cells r...
Future studies will assess the effect of RF fields on other cell lines and on gene expression in the mouse brain after in vivo exposure.
Show BibTeX
@article{ss_2006_microarray_gene_expression_profiling_3316,
author = {Qutob SS and Chauhan V and Bellier PV and Yauk CL and Douglas GR and Berndt L and Williams A and Gajda GB and Lemay E and Thansandote A and McNamee JP.},
title = {Microarray gene expression profiling of a human glioblastoma cell line exposed in vitro to a 1.9 GHz pulse-modulated radiofrequency field.},
year = {2006},
doi = {10.1667/RR3561.1.short},
url = {https://bioone.org/journals/radiation-research/volume-165/issue-6/RR3561.1/Microarray-Gene-Expression-Profiling-of-a-Human-Glioblastoma-Cell-Line/10.1667/RR3561.1.short},
}