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Chapitre D'ouvrage Année : 2013

Serotonin type 4 receptor dimers

Résumé

Numerous class A G protein-coupled receptors and especially biogenic amine receptors have been reported to form homodimers. Indeed, the dimerization process might occur for all the metabotropic serotonergic receptors. Moreover, dimerization appears to be essential for the function of serotonin type 2C (5-HT2C) and type 4 (5-HT4) receptors and required to obtain full receptor activity. Several techniques have been developed to analyze dimer formation and properties. Due to our involvement in deciphering 5-HT4R transduction mechanisms, we improved and set up new procedures to study 5-HT4R dimers, by classical methods or modern tools. This chapter presents detailed protocols to detect 5-HT4R dimers by western blotting and co-immunoprecipitation, including the optimizations that we routinely carry out. We developed an innovative method to achieve functional visualization of 5-HT4R dimers by immunofluorescence, taking advantage of the 5-HT4-RASSL (Receptor Activated Solely by Synthetic Ligand) mutant that was engineered in the laboratory. Finally, we adapted the powerful Time-resolved FRET technology to assess a relative quantification of dimer formation and affinity
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Dates et versions

hal-01792387 , version 1 (19-02-2020)

Identifiants

Citer

Sylvie Claeysen, Romain Donneger, Patrizia Giannoni, Florence Gaven, Lucie P. Pellissier. Serotonin type 4 receptor dimers. Methods in Cell Biology - Receptor-Receptor Interactions, 117, Academic Press - Elsevier, pp.123-139, 2013, 117, 978-0-12-408143-7. ⟨10.1016/B978-0-12-408143-7.00007-4⟩. ⟨hal-01792387⟩
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