Xie, Sheng-Xue and Petrache, Georgiana and Schneider, Erich and Ye, Qi-Zhuang and Bernhardt, Guenther and Seifert, Roland and Buschauer, Armin (2006) Synthesis and pharmacological characterization of novel fluorescent histamine H-2-receptor ligands derived from aminopotentidine. BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 16 (15). pp. 3886-3890. ISSN 0960-894X,
Full text not available from this repository. (Request a copy)Abstract
In an effort to develop a non-radioactive alternative to the [H-3]tiotidine and [I-125] iodoaminopotentidine binding assays for the histamine H-2-receptor (H2R), primary amines related to aminopotentidine were prepared and coupled with the succinimidyl esters of the bulky fluorescent dyes S0536 and BODIPY (R) 650/665-X. The primary amines exhibited different degrees of antagonistic potency at the human and guinea pig H2R. Surprisingly, one compound (5) coupled to the cyanine dye S0536 acted as potent partial agonist/antagonist at the H2R (K-B similar to 50 nM; EC50 similar to 100-150 nM). Compounds coupled to the BODIPY dye exhibited moderately high H2R-affinity, too. Thus, the H2R accommodates bulky fluorophores, probably through interaction with extracellular receptor domains. The compounds presented herein provide a starting point for the optimization of fluorescent H2R ligands with respect to affinity and fluorescence as valuable tools to analyze the molecular mechanisms of H2R activation. (c) 2006 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RECEPTORS; fluorescent probes; cyanine; BODIPY; histamine H-2-receptor agonist; GTPase assay |
| Subjects: | 600 Technology > 615 Pharmacy |
| Divisions: | Chemistry and Pharmacy > Institute of Pharmacy > Alumni or Retired Professors > Pharmaceutical/Medicinal Chemistry II (Prof. Buschauer) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Feb 2021 09:22 |
| Last Modified: | 08 Feb 2021 09:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34187 |
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