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Mitochondrial Membrane Potential Assay.

Srilatha Sakamuru1, Matias S Attene-Ramos1, Menghang Xia2

  • 1National Center for Advancing Translational Sciences, National Institutes of Health, Building C, MSC: 3375, 9800 Medical Center Drive, Bethesda, MD, 20892, USA.

Methods in Molecular Biology (Clifton, N.J.)
|August 13, 2016
PubMed
Summary
This summary is machine-generated.

This study optimized a cell-based assay to measure mitochondrial membrane potential (MMP) using a novel indicator. This method efficiently screens compounds for mitochondrial toxicity in HepG2 cells.

Keywords:
1536-well plate formatMesoxalonitrile 4-trifluoromethoxyphenylhydrazone (FCCP)Mitochondrial membrane potential (MMP)Mitochondrial membrane potential indicator (m-MPI)Mitochondrial toxicity

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Toxicology

Background:

  • Mitochondrial function is crucial for cell health and is assessed by monitoring mitochondrial membrane potential (MMP).
  • Cationic fluorescent dyes are standard tools for MMP assessment.
  • HepG2 cells are a widely used model for liver cell studies.

Purpose of the Study:

  • To develop and optimize a homogenous cell-based assay for detecting changes in MMP.
  • To utilize a water-soluble mitochondrial membrane potential indicator (m-MPI) for MMP assessment.
  • To screen compound libraries for mitochondrial toxicity using the optimized MMP assay.

Main Methods:

  • Optimization of a homogenous cell-based assay for MMP measurement.
  • Utilized a water-soluble mitochondrial membrane potential indicator (m-MPI).
  • Performed the assay in a 1536-well plate format for high-throughput screening.

Main Results:

  • Successfully detected changes in MMP in HepG2 cells using m-MPI.
  • The assay was optimized for a 1536-well plate format.
  • The assay demonstrated utility in screening compound libraries for mitochondrial toxicity.

Conclusions:

  • The optimized m-MPI assay provides an efficient method for assessing MMP.
  • This assay is suitable for high-throughput screening of compounds for mitochondrial toxicity.
  • The developed assay contributes to understanding chemical effects on mitochondrial health.