Abstract
Mouse T cells express the toxin-related ecto-ADP-ribosyltransferase ARTC2 that catalyzes the posttranslational ADP-ribosylation of cell surface proteins by transferring the ADP-ribose group of its substrate nicotinamide adenine dinucleotide (NAD+) to arginine residues of its target proteins. One well known target of ARTC2 is the ATP-gated P2X7 ion channel. ADP-ribosylation of P2X7 induces gating of the channel, calcium influx, ecto-domain shedding, phosphatidylserine externalization, and finally cell death. Previous studies have shown that the ARTC2 substrate NAD+ is released during T cell preparation. Since P2X7 is differentially expressed among T cell subpopulations, preparation-related ADP-ribosylation has a strong impact on the vitality of T cells that express high levels of P2X7. With this chapter we provide a protocol to monitor the consequences of preparation-related P2X7 ADP-ribosylation on T cells using regulatory T cells as generic T cell subpopulation known to express high levels of P2X7. However, this protocol could be easily adapted to other T cell populations.
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Rissiek, B., Lukowiak, M., Haag, F., Magnus, T., Koch-Nolte, F. (2018). Monitoring the Sensitivity of T Cell Populations Towards NAD+ Released During Cell Preparation. In: Chang, P. (eds) ADP-ribosylation and NAD+ Utilizing Enzymes. Methods in Molecular Biology, vol 1813. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-8588-3_22
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DOI: https://doi.org/10.1007/978-1-4939-8588-3_22
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