Effect of gyromagnetic fields on human prostatic adenocarcinoma cells

Abstract

Hongen Lei,1 Yongde Xu,1 Ruili Guan,1 Meng Li,2 Yu Hui,3 Zhezhu Gao,1 Bicheng Yang,1 Zhongcheng Xin1 1Andrology Center, Peking University First Hospital, Peking University, Beijing, 2Department of Urology, General Hospital of Ningxia Medical University, Yinchuan, 3Department of Urology, The First Affiliated Hospital of Soochow University, Soochow, People’s Republic of China Purpose: To investigate the biological effect of gyromagnetic fields (GMFs) on cell proliferation and apoptosis of human prostatic adenocarcinoma cells and explore the underlying mechanisms.Methods: PC-3 cells were grouped into normal control (NC) and GMF treatment groups. Cell proliferation was analyzed with kit-8 and Ki67 immunofluorescence staining, while cell apoptosis was analyzed with flow cytometry double staining of Annexin V-PE/7-AAD. The Akt and p38 MAPK/Caspase signaling pathways were analyzed by western blotting and immunofluorescence staining, and cell polarization was analyzed with PARD3.Results: Cell proliferation and activity of the Akt pathway were significantly decreased by the GMF, while cell apoptosis, activity of p38 MAPK, and PARD3-positive cell number were significantly increased in the GMF group compared to the NC group.Conclusion: GMFs inhibit cell proliferation, induce apoptosis, and regulate tumor cell polarity conditions, potentially through down-regulating Akt, activating the p38 MAPK/Caspase pathway, and promoting PARD3 expression in PC-3 cells. Keywords: apoptosis, gyromagnetic fields, PC-3 cells, prostate cancer