Abstract
The P2X7 receptor is a classic purinoceptor/ion channel. After activated by ATP, it opens a cation selective channel, which dilates to a large pore over tens of seconds, allowing the entry of big molecules. This unique feature is often used to evaluate this receptor’s function with DNA-binding dyes (MW 300–400 Da), such as ethidium bromide and Yo-Pro-1. Here we describe two-color flow cytometry based protocols for measuring P2X7 pore dilation. One is ATP-induced ethidium uptake by real-time multicolor flow cytometry for standardized and accurate quantitation, and the other is a quick whole blood assay which is particularly useful for ex vivo study.
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Gu, B.J., Avula, P., Wiley, J.S. (2020). Assays to Measure Purinoceptor Pore Dilation. In: Pelegrín, P. (eds) Purinergic Signaling. Methods in Molecular Biology, vol 2041. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9717-6_24
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DOI: https://doi.org/10.1007/978-1-4939-9717-6_24
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Publisher Name: Humana, New York, NY
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Online ISBN: 978-1-4939-9717-6
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