Abstract
The Notch receptor and its ligands are cell surface transmembrane proteins that are internalized. Endocytosis and vesicle trafficking play key roles in Notch signaling activation and modulation. In mammalian cultured cells it is possible to track these cell surface molecules by pulse-labeling these proteins in vivo. One labeling protocol consists in the covalent linkage of membrane-impermeable biotin followed by western blotting. An alternative protocol consists of using high affinity antibodies against the extracellular domains of the proteins followed by immunofluorescence, thereby allowing monitoring of the fate of the labeled proteins. In this chapter, we will describe these two approaches to study the dynamics of receptor and ligand trafficking.
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Acknowledgments
We thank Loredana Puca for critical reading of the manuscript, J. Moretti, S. Heuss, and F. Logeat for discussion and materials. Financial support of Institut Pasteur, CNRS, and Ligue Nationale Contre le Cancer (LNCC RS11/75-21) is acknowledged.
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Chastagner, P., Brou, C. (2014). Tracking Trafficking of Notch and Its Ligands in Mammalian Cells. In: Bellen, H., Yamamoto, S. (eds) Notch Signaling. Methods in Molecular Biology, vol 1187. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-1139-4_7
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DOI: https://doi.org/10.1007/978-1-4939-1139-4_7
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