In vitro experiments
MCF-7 and SK-BR-3 cells were purchased from the German Collection of Microorganisms and Cell Cultures. MCF-7 cells were grown in DMEM (Gibco) supplemented with 1% GlutaMAX (Gibco) and SK-BR-3 in McCoy’s 5A medium (Gibco) in standard incubation conditions at 37 °C with 5% CO