Super-Resolution Imaging of Voltages in the Interior of Individual, Vital Mitochondria.
Super-Resolution Imaging of Voltages in the Interior of Individual, Vital Mitochondria.
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超分辨率成像的电压在内部的个人,重要的线粒体。
DOI:
10.1021/acsnano.3c02768
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发表时间:
2024-01-16
期刊:
影响因子:
17.1
通讯作者:
Burke, Peter J.
中科院分区:
文献类型:
--
作者:
Lee, ChiaHung;Wallace, Douglas C.;Burke, Peter J.
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 relates to membrane potential. This permits direct analysis of mitochondrial structure and function (voltage) of isolated, individual mitochondria as well as submitochondrial structures in the functional, intact state, a major advance in super-resolution studies of living organelles.
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