The cannabinoid ligands SR141716A and AM251 enhance human and mouse islet function via GPR55-independent signalling.

ABSTRACT:

Aims

Endocannabinoids are lipid mediators involved in the regulation of glucose homeostasis. They interact with the canonical cannabinoid receptors CB₁ and CB₂, and it is now apparent that some cannabinoid receptor ligands are also agonists at GPR55. Thus, CB₁ antagonists such as SR141716A, also known as rimonabant, and AM251 act as GPR55 agonists in some cell types. The complex pharmacological properties of cannabinoids make it difficult to fully identify the relative importance of CB₁ and GPR55 in the functional effects of SR141716A, and AM251. Here, we determine whether SR141716A and AM251 regulation of mouse and human islet function is through their action as GPR55 agonists.

Methods

Islets isolated from Gpr55^+/+ and

SUBMITTER: Ruz-Maldonado I 

PROVIDER: S-EPMC7599183 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature