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Synthesis of a Deuterated Standard for the Quantification of 2-Arachidonoylglycerol in Caenorhabditis elegans
Published on: September 21, 2019
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Structural basis of selective cannabinoid CB2 receptor activation.
Xiaoting Li1, Hao Chang1,2, Jara Bouma3
1iHuman Institute, ShanghaiTech University, Shanghai, 201210, China.
Nature Communications
|March 16, 2023
Summary
Researchers discovered LEI-102, a cannabinoid receptor 2 (CB2R) agonist, revealing its molecular activation mechanism. Lipophilicity influences how agonists engage the CB2R binding site, impacting drug design for conditions like chemotherapy-induced nephropathy.
Area of Science:
- Pharmacology
- Molecular Biology
- Structural Biology
Background:
- Cannabinoid CB2 receptor (CB2R) agonists show therapeutic potential.
- The precise molecular mechanisms of CB2R activation remain incompletely understood.
Purpose of the Study:
- To elucidate the molecular mode-of-action of selective CB2R agonists.
- To identify key residues involved in CB2R activation.
- To investigate the role of ligand physicochemical properties in CB2R engagement.
Main Methods:
- Binding kinetics assays
- Site-directed mutagenesis
- Cryo-electron microscopy (cryo-EM) studies
- In vivo efficacy testing in a chemotherapy-induced nephropathy model
Main Results:
- LEI-102, a novel CB2R agonist, was discovered and characterized.
- Key residues essential for CB2R activation were identified.
- Ligand lipophilicity dictates the pathway to the CB2R binding pocket (membrane channel vs. direct access).
- LEI-102 demonstrated oral efficacy in a preclinical model due to favorable properties.
Conclusions:
- This study delineates the molecular mechanism of selective CB2R activation.
- Ligand lipophilicity is a critical factor in CB2R engagement and drug design.
- Findings have implications for designing G protein-coupled receptor (GPCR) therapeutics and understanding endogenous ligand activation.
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