How Carvedilol activates β2-adrenoceptors

Tobias Benkel, Mirjam Zimmermann, Julian Zeiner, Sergi Bravo, Nicole Merten, Victor Jun Yu Lim, Edda Sofie Fabienne Matthees, Julia Drube, Elke Miess-Tanneberg, Daniela Malan, Martyna Szpakowska, Stefania Monteleone, Jak Grimes, Zsombor Koszegi, Yann Lanoiselée, Shannon O’Brien, Nikoleta Pavlaki, Nadine Dobberstein, Asuka Inoue, Viacheslav NikolaevDavide Calebiro, Andy Chevigné, Philipp Sasse, Stefan Schulz, Carsten Hoffmann, Peter Kolb, Maria Waldhoer, Katharina Simon, Jesus Gomeza, Evi Kostenis*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Carvedilol is among the most effective β-blockers for improving survival after myocardial infarction. Yet the mechanisms by which carvedilol achieves this superior clinical profile are still unclear. Beyond blockade of β1-adrenoceptors, arrestin-biased signalling via β2-adrenoceptors is a molecular mechanism proposed to explain the survival benefits. Here, we offer an alternative mechanism to rationalize carvedilol’s cellular signalling. Using primary and immortalized cells genome-edited by CRISPR/Cas9 to lack either G proteins or arrestins; and combining biological, biochemical, and signalling assays with molecular dynamics simulations, we demonstrate that G proteins drive all detectable carvedilol signalling through β2ARs. Because a clear understanding of how drugs act is imperative to data interpretation in basic and clinical research, to the stratification of clinical trials or to the monitoring of drug effects on the target pathway, the mechanistic insight gained here provides a foundation for the rational development of signalling prototypes that target the β-adrenoceptor system.

Original languageEnglish
Article number7109
JournalNature Communications
Volume13
Issue number1
DOIs
Publication statusPublished - 19 Nov 2022

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