Nuclear microinjection to assess how heterologously expressed proteins impact Ca2+ signals in Xenopus oocytes.

Yaping Lin-Moshier, Jonathan S Marchant

Cold Spring Harbor protocols 2013 Mar 01

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The Xenopus oocyte is frequently used for heterologous expression and for studying the spatiotemporal patterning of Ca(2+) signals. Here, we outline a protocol for nuclear microinjection of the Xenopus oocyte for the purpose of studying how subsequently expressed proteins impact intracellular Ca(2+) signals evoked by inositol trisphosphate (InsP3). Injected oocytes can easily be identified by reporter technologies and the impact of heterologously expressed proteins on the generation and properties of InsP3-evoked Ca(2+) signals can be resolved using caged InsP3 and fluorescent Ca(2+) indicators.

Citation

Yaping Lin-Moshier, Jonathan S Marchant. Nuclear microinjection to assess how heterologously expressed proteins impact Ca2+ signals in Xenopus oocytes. Cold Spring Harbor protocols. 2013 Mar 01;2013(3)