How Oliceridine (TRV-130) Binds and Stabilizes a mu-Opioid Receptor Conformational State That Selectively Triggers G Protein Signaling Pathways.

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Schneider S, Provasi D, Filizola M

How Oliceridine (TRV-130) Binds and Stabilizes a mu-Opioid Receptor Conformational State That Selectively Triggers G Protein Signaling Pathways.

Biochemistry. 2016 Nov 22;55(46):6456-6466. doi: 10.1021/acs.biochem.6b00948. Epub 2016 Nov 7.

PubMed ID

27778501 [ View in PubMed

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Abstract

Substantial attention has recently been devoted to G protein-biased agonism of the mu-opioid receptor (MOR) as an ideal new mechanism for the design of analgesics devoid of serious side effects. However, designing opioids with appropriate efficacy and bias is challenging because it requires an understanding of the ligand binding process and of the allosteric modulation of the receptor. Here, we investigated these phenomena for TRV-130, a G protein-biased MOR small-molecule agonist that has been shown to exert analgesia with less respiratory depression and constipation than morphine and that is currently being evaluated in human clinical trials for acute pain management. Specifically, we carried out multimicrosecond, all-atom molecular dynamics (MD) simulations of the binding of this ligand to the activated MOR crystal structure. Analysis of >50 mus of these MD simulations provides insights into the energetically preferred binding pathway of TRV-130 and its stable pose at the orthosteric binding site of MOR. Information transfer from the TRV-130 binding pocket to the intracellular region of the receptor was also analyzed, and was compared to a similar analysis carried out on the receptor bound to the classical unbiased agonist morphine. Taken together, these studies lead to a series of testable hypotheses of ligand-receptor interactions that are expected to inform the structure-based design of improved opioid analgesics.

DrugBank Data that Cites this Article

Drugs

Oliceridine

Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
Oliceridine	Mu-type opioid receptor	Protein	Humans	Yes	Agonist	Details