Electromagnetic field exposure alters gene expression in human glioma cells. - GreenMedInfo Summary

Because few cancer studies have examined protein profiles and genetic regulation from a single carcinogen exposure, the objective of this study was to determine genetic change via microarray and to evaluate whether that change was a precursor to cellular protein changes. In separate but experimentally identical studies, human glioma SF767 cells were exposed for 3 h to 60-Hz magnetic fields (sham or 1.2 muT). Microarray results suggested that magnetic field treatment resulted in the up-regulation of 5 genes, whereas 25 genes were down-regulated. The mean abundance of 10 identified proteins was altered following 1.2 muT exposure relative to sham (3 increase, 7 decrease). These studies suggest a limited but complicated response in the glioma cells to the magnetic field treatment.