Determination of Mitochondrial Morphology in Live Cells Using Confocal Microscopy

Manna Lin; Jiakang Wang; Zihong Xian; Chunyuan Zeng; Jiangping Xu

doi:10.3791/68167

Determinación de la morfología mitocondrial en células vivas mediante microscopía confocal

JoVE Journal
Neuroscience

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JoVE Journal Neuroscience

Determination of Mitochondrial Morphology in Live Cells Using Confocal Microscopy

Determinación de la morfología mitocondrial en células vivas mediante microscopía confocal

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06:57 min

July 3, 2025

DOI: 10.3791/68167-v

Manna Lin^1,2, Jiakang Wang¹, Zihong Xian¹, Chunyuan Zeng¹, Jiangping Xu¹

¹NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences,Southern Medical University, ²Central Laboratory,Southern Medical University

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Overview

This study presents a detailed protocol for assessing mitochondrial morphology in live SH-SY5Y cells, relevant for pharmacological studies, especially in Parkinson's disease. The method emphasizes accessibility and lower costs through the use of fluorescence imaging with MitoTracker staining, avoiding complex techniques like electron microscopy.

Key Study Components

Area of Science

Neuropharmacology
Mitochondrial function
Cell imaging techniques

Background

Challenges in lab cell analysis persist despite manufacturer guidance.
This study addresses these by outlining a step-by-step protocol for mitochondrial morphology assessment.
The focus is on reducing costs and enhancing accessibility for researchers.

Purpose of Study

To develop a reproducible method for analyzing mitochondrial morphology in live cells.
To facilitate understanding of drug compound relationships with mitochondrial function in neurodegenerative conditions.
To compare the effectiveness of simple staining methods against more complex imaging techniques.

Methods Used

The primary platform used is live cell culture.
SH-SY5Y neuroblastoma cells are employed as the biological model for examining mitochondrial response to pharmacological agents.
Image acquisition involves fluorescence microscopy and open-source software for data analysis.
Key steps include cell detachment, MitoTracker staining, and image processing techniques such as skeletonization.

Main Results

The developed protocol allows for improved visualization and analysis of mitochondrial morphology.
MPP+ treatment was shown to significantly disrupt mitochondrial structure in treated cells compared to controls.
Fluorescence intensity and background noise are key factors in imaging quality.

Conclusions

This study establishes a reliable and cost-effective approach for imaging mitochondrial morphology in live neurons.
The method enhances understanding of mitochondrial dynamics in drug response, particularly in neurodegenerative disease models.

Frequently Asked Questions

What are the advantages of using the MitoTracker staining method?

MitoTracker staining is a straightforward and cost-effective approach for assessing mitochondrial morphology, avoiding the complexities of electron microscopy.

How are SH-SY5Y cells prepared for imaging?

The SH-SY5Y cells are cultured, detached using trypsin, and then stained with MitoTracker before imaging with a confocal microscope.

What types of data are obtained from this imaging method?

This method provides data on mitochondrial morphology and fluorescence intensity, which can inform on cell health and response to treatments.

How long does the entire staining and imaging process take?

After cell preparation, the staining and equilibration steps take approximately 30 minutes before imaging can commence.

Can this method be adapted for other cell types?

Yes, the protocol can be optimized for other cell types by adjusting staining conditions and imaging parameters accordingly.

What limitations should be considered when using this method?

Potential limitations include background fluorescence interference and the need for careful calibration to avoid photobleaching during imaging.

En este estudio, describimos un protocolo paso a paso y enfatizamos los detalles clave para determinar las características morfológicas de las mitocondrias en células vivas, incluida la preparación de la muestra, la adquisición de imágenes y el análisis de datos. Este método se usa comúnmente para examinar la morfología mitocondrial para estudiar diversas afecciones.

Nuestra investigación se centra en la neurofarmacología básica. Específicamente, estudiamos cómo funcionan las moléculas de los medicamentos. Nuestro objetivo es comprender la relación entre los posibles compuestos farmacológicos y la función mitocondrial en la enfermedad de Parkinson.

Estudios anteriores revisan los desafíos de análisis de células de laboratorio de larga data incluso con las pautas del fabricante. Para resolver esto, describimos un protocolo detallado paso a paso para evaluar la morfología mitocondrial en células de laboratorio. Nuestro protocolo utiliza una tinción mitocondrial simple, imágenes de fluorescencia y software de código abierto.

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