ArticleInternational journal of molecular sciences2022
Bifunctional Opioid/Melanocortin Peptidomimetics for Use in Neuropathic Pain: Variation in the Type and Length of the Linker Connecting the Two Pharmacophores.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 12 citations in OpenAlex.
- Progress in peptide and protein therapeutics: Challenges and strategies.Acta pharmaceutica Sinica. B · 2025Review
- Molecular mechanisms of morphine tolerance and dependence; novel insights and future perspectives.Molecular and cellular biochemistry · 2024Review
- The Roles of Imaging Biomarkers in the Management of Chronic Neuropathic Pain.International journal of molecular sciences · 2022Review
- Fentanyl Structure as a Scaffold for Opioid/Non-Opioid Multitarget Analgesics.International journal of molecular sciences · 2022Review
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Authors and funding
15 authors at 4 institutions in 1 country.
Funding
Abstract
Based on the mechanism of neuropathic pain induction, a new type of bifunctional hybrid peptidomimetics was obtained for potential use in this type of pain. Hybrids consist of two types of pharmacophores that are connected by different types of linkers. The first pharmacophore is an opioid agonist, and the second pharmacophore is an antagonist of the pronociceptive system, i.e., an antagonist of the melanocortin-4 receptor. The results of tests in acute and neuropathic pain models of the obtained compounds have shown that the type of linker used to connect pharmacophores had an effect on antinociceptive activity. Peptidomimetics containing longer flexible linkers were very effective at low doses in the neuropathic pain model. To elucidate the effect of linker lengths, two hybrids showing very high activity and two hybrids with lower activity were further tested for affinity for opioid (mu, delta) and melanocortin-4 receptors. Their complexes with the target receptors were also studied by molecular modelling. Our results do not show a simple relationship between linker length and affinity for particular receptor types but suggest that activity in neuropathic pain is related to a proper balance of receptor affinity rather than maximum binding to any or all of the target receptors.
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