Identification of positive modulators of TRPM5 channel from a high-throughput screen using a fluorescent membrane potential assay

Autor: Caterina Virginio, Laura Aldegheri, Selena Nola, Daniela Brodbeck, Laurent Brault, Luca F. Raveglia, Alessio Barilli, Mark Sabat, Richard Myers
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: SLAS Discovery, Vol 27, Iss 1, Pp 55-64 (2022)
Druh dokumentu: article
ISSN: 2472-5552
DOI: 10.1016/j.slasd.2021.10.004
Popis: Transient Receptor Potential Melastatin 5 (TRPM5) is an intracellular calcium-activated cation-selective ion channel expressed in a variety of cell types. Dysfunction of this channel has recently been implied in a range of disease states including diabetes, enteric infections, inflammatory responses, parasitic infection and other pathologies. However, to date, agonists and positive modulators of this channel with sufficient selectivity to enable target validation studies have not been described, limiting the evaluation of TRPM5 biology and its potential as a drug target. We developed a high-throughput assay using a fluorescent membrane potential dye and a medium- and high-throughput electrophysiology assay using QPatch HTX and SyncroPatch 384PE. By employing these assays, we conducted a primary screening campaign and identified hit compounds as TRPM5 channel positive modulators. An initial selectivity profile confirmed hit selectivity to TRPM5 and is presented here. These small molecule TRPM5 compounds have a high potential both as early tool compounds to enable pharmacological studies of TRPM5 and as starting points for the development of potent, selective TRPM5 openers or positive modulators as novel drugs targeting several pathological states.
Databáze: Directory of Open Access Journals