Identification of two novel α1-AR agonists using a high-throughput screening model

Area of Science:

• Pharmacology
• Molecular Biology
• Drug Discovery

Background:

• Alpha1-adrenoceptors (ARs), including subtypes 1A, 1B, and 1D, play crucial roles in sympathetic nervous system regulation.
• Identifying subtype-selective ligands is essential for targeted therapeutic interventions.

Purpose of the Study:

• To establish a high-throughput screening (HTS) assay for discovering alpha1-AR subtype-selective agonists.
• To identify novel compounds with alpha1-AR agonist activity.

Main Methods:

• Development of a dual-luciferase reporter assay in HEK293 cells for HTS.
• Screening of compound libraries to identify ligands targeting alpha1-ARs.

Main Results:

• Two novel compounds, CHE3 and CHK3, were identified as alpha1-AR agonists.
• These compounds demonstrated moderate to weak anti-proliferative effects on cancer cell lines.
• The HTS assay proved effective for identifying alpha1-AR subtype-selective ligands.

Conclusions:

• The developed HTS assay is a valuable tool for discovering novel alpha1-AR subtype-selective ligands.
• Compounds CHE3 and CHK3 represent potential leads for further investigation in adrenergic signaling and cancer therapy.