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Related Experiment Video

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Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs
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Multiplexed high-content analysis of mitochondrial morphofunction using live-cell microscopy.

Eligio F Iannetti1,2, Jan A M Smeitink2,3,4, Julien Beyrath2

  • 1Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands.

Nature Protocols
|August 26, 2016
PubMed
Summary
This summary is machine-generated.

This study introduces a new automated method to quantify mitochondrial function and cell characteristics in primary human skin fibroblasts (PHSFs). The protocol enables unbiased analysis of cellular and nuclear parameters for preclinical research applications.

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Area of Science:

  • Cell Biology
  • Biotechnology
  • Biophysics

Background:

  • Mitochondria are crucial for cellular health and disease, exhibiting dynamic morphology linked to function.
  • Understanding mitochondrial morphofunction is key to cellular physiology and pathology.
  • Existing methods for mitochondrial analysis can be subjective or lack comprehensive parameter assessment.

Purpose of the Study:

  • To develop an unbiased, automated protocol for quantifying mitochondrial morphofunction, cellular, and nuclear parameters.
  • To establish a standardized method for analyzing primary human skin fibroblasts (PHSFs).
  • To enable scalable high-content screening of cellular and mitochondrial health.

Main Methods:

  • Utilized a 96-well plate format for culturing primary human skin fibroblasts (PHSFs).
  • Employed automated multispectral fluorescence microscopy with specific stains (TMRM, calcein-AM, Hoechst 33258).
  • Developed a processing pipeline to extract 44 descriptors, followed by quality control (QC) using principal component analysis (PCA) and statistical interpretation.

Main Results:

  • Successfully quantified mitochondrial morphology and membrane potential alongside cellular and nuclear features.
  • The protocol demonstrated robustness through PCA-based QC.
  • Extracted 44 distinct quantitative descriptors for comprehensive cellular analysis.

Conclusions:

  • The developed protocol provides an automated and unbiased method for assessing mitochondrial morphofunction and cellular parameters in PHSFs.
  • This method is portable to other cell types and scalable for high-content screening.
  • Offers a valuable tool for preclinical research and understanding cellular (patho)physiology.