The study by Mylod et al. (2024) investigates the effects of electric fields, a non-invasive treatment using low-intensity, intermediate-frequency alternating electric fields, on natural killer (NK) cells and their ability to target glioblastoma (GBM) cells. The researchers found that electric fields, particularly at 200 kHz, significantly enhanced NK cell degranulation, a marker of cytotoxicity, against both K562 target cells and GBM cell lines without affecting NK cell viability or cytokine (IFN-γ) production.
This suggests that combining electric fields with NK cell-based immunotherapy could improve the efficacy of GBM treatments by increasing NK cell-mediated tumor cell killing. While electric fields exposure reduced the cytokine-mediated upregulation of nutrient receptors on NK cells, it did not impact mitochondrial health or granzyme B expression. These findings highlight the potential of electric fields to augment NK cell immunotherapy for GBM, warranting further investigation into the mechanisms and long-term effects of this combination treatment in more complex models.
