Abstract
Reactive oxygen species (ROS) convey signals essential for proliferation, maintenance, and senescence of a growing list of cell types. Compartmentalization of these signals is integral to cell viability as well as the signaling pathways ROS direct. Redox-active endosomes (redoxosomes) are formed downstream of several ligand-activated receptors. NADPH oxidase (NOX) is a main component of redoxosomes, which recruits multiple proteins (Rac1, NOX2, p67phox, SOD1). Isolation of redoxosomes and evaluation of how superoxide (O2˙−) production directs receptor signaling at the level of the endosome have enabled a better understanding of biologic processes controlled by ROS. In this chapter, we will first review the major signaling pathways that utilize redoxosomes and components that control its redox-dependent functions. We will then outline biochemical and biophysical methods for the isolation and characterization of redoxosome properties.
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Acknowledgments
This work was supported by NIH grant R24 DK096518 (to J.F.E.).
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Shahin, W.S., Engelhardt, J.F. (2019). Isolation of Redox-Active Endosomes (Redoxosomes) and Assessment of NOX Activity. In: Knaus, U., Leto, T. (eds) NADPH Oxidases. Methods in Molecular Biology, vol 1982. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9424-3_27
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DOI: https://doi.org/10.1007/978-1-4939-9424-3_27
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