Tracing the pH dependent activation of autophagy in cancer cells by silicon nanowire-based impedance biosensor

•PH dependent behavior of normal and cancer cells by impedimetric biosensor based on Silicon Nanowires (SiNWs) was introduced.•Autophagy as a biologically activated process in invasive cancer cells, protect them from apoptosis in lower pH.•The measured electrical resistance of MCF10, MCF7 and MDA-MB...

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