4.6 Review Book Chapter

Structural Insights Accelerate the Discovery of Opioid Alternatives

期刊

ANNUAL REVIEW OF BIOCHEMISTRY, VOL 90, 2021
卷 90, 期 -, 页码 739-761

出版社

ANNUAL REVIEWS
DOI: 10.1146/annurev-biochem-061620-044044

关键词

GPCR; opioid receptor; analgesic; side effects; opioids; nonopioid

资金

  1. National Institutes of Health [R37DA04567, R01MH112205]

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Opioids like morphine and oxycodone are commonly used for pain relief, but they come with high abuse potential and fatal side effects. Efforts to find safer nonopioid analgesics targeting the mu-opioid receptor are facing challenges, but advancements in understanding receptor activation and signaling are leading to the discovery of alternative strategies and targets.
Opioids such as morphine and oxycodone are analgesics frequently prescribed for the treatment of moderate or severe pain. Unfortunately, these medications are associated with exceptionally high abuse potentials and often cause fatal side effects, mainly through the mu-opioid receptor (MOR). Efforts to discover novel, safer, and more efficacious analgesics targeting MOR have encountered challenges. In this review, we summarize alternative strategies and targets that could be used to develop safer nonopioid analgesics. A molecular understanding of G protein-coupled receptor activation and signaling has illuminated not only the complexities of receptor pharmacology but also the potential for pathway-selective agonists and allosteric modulators as safer medications. The availability of structures of pain-related receptors, in combination with high-throughput computational tools, has accelerated the discovery of multitarget ligands with promising pharmacological profiles. Emerging clinical evidence also supports the notion that drugs targeting peripheral opioid receptors have potential as improved analgesic agents.

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