Study of Na+ channel by Patch clamp (CAT#: STEM-PET-0035-WXH)

Introduction

Voltage-gated sodium channels are responsible for initiation and propagation of the action potential (AP) in nerve, muscle and heart, where they are crucial determinants of many aspects of excitability and contraction.

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Principle Applications Procedure Materials Notes Related Products

Principle

The patch-clamp technique involves a glass micropipette forming a tight gigaohm seal with the cell membrane. The micropipette contains a wire bathed in an electrolytic solution to conduct ions. To measure single ion channels, a “patch” of membrane is pulled away from the cell after forming a gigaohm seal.

Applications

• Study of ionic currents in individual isolated living cells, tissue sections, or patches of cell membrane.
• Study of excitable cells such as neurons, cardiomyocytes, muscle fibers, and pancreatic beta cells.
• Study of ion channels.

Procedure

1. Fabrication of glass electrodes
2. Measuring glass electrode resistance and compensating offset potential
3. Glass electrode contact to cell membrane and obtain a GΩ seal
4. Acquire and analyse recordings using the appropriate software.

Materials

Patch clamp system

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