Super-Resolution Imaging of Voltages in the Interior of Individual, Vital Mitochondria.

ABSTRACT: We present super-resolution microscopy of isolated functional mitochondria, enabling real-time studies of structure and function (voltages) in response to pharmacological manipulation. Changes in mitochondrial membrane potential as a function of time and position can be imaged in different metabolic states (not possible in whole cells), created by the addition of substrates and inhibitors of the electron transport chain, enabled by the isolation of vital mitochondria. By careful analysis of structure dyes and voltage dyes (lipophilic cations), we demonstrate that most of the fluorescent signal seen from voltage dyes is due to membrane bound dyes, and develop a model for the membrane potential dependence of the fluorescence contrast for the case of super-resolution imaging, and how it relat

SUBMITTER: Lee C 

PROVIDER: S-EPMC10795477 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature