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Quantifying Nanoscopic Alterations Associated with Mitochondrial Dysfunction Using Three-Dimensional Single-Molecule Localization Microscopy

Version 2 2024-02-12, 16:35
Version 1 2024-02-12, 16:34
Posted on 2024-02-12 - 16:35
Mitochondrial morphology provides unique insights into their integrity and function. Among fluorescence microscopy techniques, 3D super-resolution microscopy uniquely enables the analysis of mitochondrial morphological features individually. However, there is a lack of tools to extract morphological parameters from super-resolution images of mitochondria. We report a quantitative method to extract mitochondrial morphological metrics, including volume, aspect ratio, and local protein density, from 3D single-molecule localization microscopy images, with single-mitochondrion sensitivity. We validated our approach using simulated ground-truth SMLM images of mitochondria. We further tested our morphological analysis on mitochondria that have been altered functionally and morphologically in controlled manners. This work sets the stage to quantitatively analyze mitochondrial morphological alterations associated with disease progression on an individual basis.

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AUTHORS (9)

Ben Brenner
Fengyuanshan Xu
Yang zhang
JUNGHUN KWON
Raymond Fang
Nader Sheibani
Sarah Zhang
Cheng Sun
Hao Zhang

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