Xenopus oocytes as a heterologous expression system for studying ion channels with the patch-clamp technique

Paolo Tammaro, Kenju Shimomura, Peter Proks

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Oocytes from the Xenopus laevis represent one of the most widely used expression systems for functional characterization of ion channels. Their large size facilitates both injection of heterologous cRNA and subsequent electrophysiological recordings of ion channel currents. Furthermore, Xenopus oocytes translate cRNA very efficiently, resulting in the generation of a large number of ion channels in the plasma membrane. In this chapter, we outline methods for oocyte preparation and maintenance and describe procedures for patch-clamping of oocytes, with a special focus on the macropatch technique. We discuss some common problems associated with patch-clamping of oocytes and their use as an expression system for ion channels. © 2009 Humana Press.
    Original languageEnglish
    Pages (from-to)127-139
    Number of pages12
    JournalMethods in Molecular Biology
    Volume491
    DOIs
    Publication statusPublished - 2008

    Keywords

    • Heterologous expression
    • Inside-out
    • Ion channels
    • Macropatch
    • Oocytes
    • Outside-out
    • Patch-clamp
    • Patch-cramming
    • Xenopus laevis

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