Fig. 2: Ferroptotic cell death is prevented by SK channel activation in galactose medium.

HT22 cells treated with erastin (1.5 µM, 16 h) in the presence or absence of CyPPA (10 µM or 50 µM) in galactose medium. Cell survival is shown by a MTT assay, b FACS analysis of Annexin V/PI, and c xCELLigence system. Mitochondrial function was assessed by FACS analysis of HT22 cells challenged with erastin (1.5 µM, 16 h) in the presence or absence of CyPPA (10 µM) in glucose. d Mitochondrial superoxide levels using MitoSOX and e MMP loss using TMRE were determined by FACS analysis. Data are presented as mean ± SD, n = 3–6, *p < 0.05, **p < 0.01, ***p < 0.001, #p < 0.05, ##p < 0.01, ###p < 0.001, *compared to control #compared to erastin alone. All experiments were independently repeated at least three times.