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Discovery of Environment-Sensitive Fluorescent Agonists for α 1 -Adrenergic Receptors.
- Source :
-
Analytical chemistry [Anal Chem] 2019 Oct 01; Vol. 91 (19), pp. 12173-12180. Date of Electronic Publication: 2019 Jul 30. - Publication Year :
- 2019
-
Abstract
- A series of novel fluorescent agonists were well developed herein with turn-on switch for α <subscript>1</subscript> -adrenergic receptors (α <subscript>1</subscript> -ARs) by conjugating the environment-sensitive fluorophore 4-chloro-7-nitrobenzoxadiazole with phenylephrine. Overall, these probes exhibited efficient binding and apparent fluorescence intensity changes (up to 10-fold) upon binding with α <subscript>1</subscript> -ARs. Moreover, these probes have been successfully applied for selectively imaging α <subscript>1</subscript> -ARs in the living cells. The dynamic process of α <subscript>1</subscript> -ARs internalization was traced successfully with these newly designed fluorescent agonists. Fluorescence polarization assay demonstrated specific interactions between these probes and α <subscript>1</subscript> -ARs. With these new probes, a bioluminescence resonance energy transfer binding assay has been well established and applied to the high-throughput screening of unlabeled α <subscript>1</subscript> -ARs agonist and antagonist. It is expected that these environment-sensitive fluorescent turn-on agonists may provide useful new tools in studying pharmacology and physiology of α <subscript>1</subscript> -ARs during drug discovery.
- Subjects :
- Adrenergic alpha-1 Receptor Agonists metabolism
Binding, Competitive
Calcium metabolism
Fluorescence
Fluorescence Polarization
Fluorescent Dyes chemistry
HEK293 Cells
Humans
Luminescence
Molecular Imaging methods
Nitro Compounds chemistry
Oxadiazoles chemistry
Phenylephrine chemistry
Adrenergic alpha-1 Receptor Agonists chemistry
Adrenergic alpha-1 Receptor Agonists pharmacology
High-Throughput Screening Assays methods
Receptors, Adrenergic, alpha-1 metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1520-6882
- Volume :
- 91
- Issue :
- 19
- Database :
- MEDLINE
- Journal :
- Analytical chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 31321979
- Full Text :
- https://doi.org/10.1021/acs.analchem.9b01059