Abstract
Phospholipid-metabolizing enzymes are important participants in neutrophil signal transduction pathways. The methods discussed herein describe assays for assessing the activities of phospholipase A2 (PLA2), phospholipase C (PLC), phospholipase D (PLD), and phosphoinositide 3-OH-kinase in intact neutrophils. PLA2 activity is measured as the release of radiolabeled arachidonic acid. PLC activity is measured as the accumulation of inositol 1,4,5-trisphosphate (IP3), a water-soluble product, using a commercially available radioreceptor assay kit. PLD activity is measured as the appearance of its radiolabeled products, phosphatidic acid and phosphatidylethanol. PI3-K activity is measured as the appearance of its radiolabeled product, phosphatidylinositol-3,4,5-trisphosphate.
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Acknowledgements
Development of the phospholipase D assay was partially supported by National Institutes of Health grant R01 AI-22564 to L.C.M.
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Sergeant, S., McPhail, L.C. (2014). Measurement of Phospholipid Metabolism in Intact Neutrophils. In: Quinn, M., DeLeo, F. (eds) Neutrophil Methods and Protocols. Methods in Molecular Biology, vol 1124. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-845-4_7
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DOI: https://doi.org/10.1007/978-1-62703-845-4_7
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