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- W4387058522 abstract "Abstract Dopamine D 1 -like receptors are the most abundant type of dopamine receptors in the central nervous system and, even after decades of discovery, still highly interesting for the study of neurological diseases. We herein describe the synthesis of a new set of fluorescent ligands, structurally derived from D 1 R antagonist SCH-23390 and labeled with two different fluorescent dyes, as tool compounds for the visualization of D 1 -like receptors. Pharmacological characterization in radioligand binding studies identified UR-NR435 ( 25 ) as a high-affinity ligand for D 1 -like receptors (p K i (D 1 R) = 8.34, p K i (D 5 R) = 7.62) with excellent selectivity towards D 2 -like receptors. Compound 25 proved to be a neutral antagonist at the D 1 R and D 5 R in a G s heterotrimer dissociation assay, an important feature to avoid receptor internalization and degradation when working with whole cells. The neutral antagonist 25 displayed rapid association and complete dissociation to the D 1 R in kinetic binding studies using confocal microscopy verifying its applicability for fluorescence microscopy. Moreover, molecular brightness studies determined a single-digit nanomolar binding affinity of the ligand, which was in good agreement with radioligand binding data. For this reason, this fluorescent ligand is a useful tool for a sophisticated characterization of native D 1 receptors in a variety of experimental setups." @default.
- W4387058522 created "2023-09-27" @default.
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- W4387058522 date "2023-09-25" @default.
- W4387058522 modified "2023-10-14" @default.
- W4387058522 title "Shedding Light on the D<sub>1</sub>-Like Receptors: A Fluorescence-Based Toolbox for Visualization of the D<sub>1</sub>and D<sub>5</sub>Receptors" @default.
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- W4387058522 doi "https://doi.org/10.1101/2023.09.25.559386" @default.
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