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Related Concept Videos

Patch Clamp01:18

Patch Clamp

5.6K
Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
5.6K

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Related Experiment Video

Updated: Jul 26, 2025

The Use of the Patch-Clamp Technique to Study the Thermogenic Capacity of Mitochondria
11:05

The Use of the Patch-Clamp Technique to Study the Thermogenic Capacity of Mitochondria

Published on: May 3, 2021

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Patch-clamp technique to study mitochondrial membrane biophysics.

Anshu Kumari1, Dung M Nguyen1, Vivek Garg1

  • 1Department of Physiology, School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA.

The Journal of General Physiology
|June 22, 2023
PubMed
Summary
This summary is machine-generated.

The patch-clamp technique allows precise study of mitochondrial transporters, crucial for cellular energy and health. This method enables real-time analysis of ion currents across the inner mitochondrial membrane, aiding research into metabolic disorders.

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Area of Science:

  • Mitochondrial biology
  • Cellular physiology
  • Membrane biophysics

Background:

  • Mitochondria are vital organelles for cellular energy production via oxidative phosphorylation.
  • Integral membrane proteins in the inner mitochondrial membrane (IMM) regulate ion and metabolite transport.
  • Dysfunctional transporters are linked to metabolic diseases and cell death.

Purpose of the Study:

  • To review the application of patch-clamp electrophysiology for studying mitochondrial membrane transporters.
  • To highlight the utility of patch-clamp for quantitative analysis of ion flux across the IMM.
  • To demonstrate the technique's capability in characterizing specific mitochondrial transporters.

Main Methods:

  • Patch-clamp electrophysiology applied to isolated mitoplasts (mitochondria lacking the outer membrane).
  • Whole-mitoplast and excised-patch recordings to analyze transporter function in native membranes.
  • Quantitative measurement of ion currents (e.g., Ca2+, H+) mediated by specific transporters.

Main Results:

  • Patch-clamp successfully records electrogenic ion currents through mitochondrial transporters like the mitochondrial calcium uniporter and uncoupling protein 1.
  • The technique allows real-time, isolated analysis of transporter biophysics, free from confounding cellular factors.
  • Critical considerations for recording from small IMM vesicles (2–5 µm diameter) are discussed.

Conclusions:

  • Patch-clamp electrophysiology is a powerful, gold-standard method for quantitative investigation of mitochondrial membrane transport.
  • This technique provides insights into the biophysical properties of IMM transporters.
  • Understanding transporter function is key to addressing mitochondrial dysfunction in disease.