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  1. Article ; Online: Effects of Repeated Treatment with the Monoacylglycerol Lipase Inhibitor MJN110

    Diester, Clare M / Balint, Hallie / Gillespie, James C / Lichtman, Aron H / Sim-Selley, Laura J / Selley, Dana E / Negus, S Stevens

    The Journal of pharmacology and experimental therapeutics

    2024  

    Abstract: MJN110 inhibits the enzyme monoacylglycerol lipase (MAGL) to increase levels of the endocannabinoid (eCB) 2-arachidonoylglycerol (2-AG), an endogenous high-efficacy agonist of cannabinoid 1 and 2 receptors ( ... ...

    Abstract MJN110 inhibits the enzyme monoacylglycerol lipase (MAGL) to increase levels of the endocannabinoid (eCB) 2-arachidonoylglycerol (2-AG), an endogenous high-efficacy agonist of cannabinoid 1 and 2 receptors (CB
    Language English
    Publishing date 2024-01-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3106-9
    ISSN 1521-0103 ; 0022-3565
    ISSN (online) 1521-0103
    ISSN 0022-3565
    DOI 10.1124/jpet.123.001940
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Exploring naltrexamine derivatives featuring azaindole moiety via nitrogen-walk approach to investigate their in vitro pharmacological profiles at the mu opioid receptor.

    Ma, Hongguang / Wang, Huiqun / Gillespie, James C / Mendez, Rolando E / Selley, Dana E / Zhang, Yan

    Bioorganic & medicinal chemistry letters

    2021  Volume 41, Page(s) 127953

    Abstract: In the present work, we reported the application of a nitrogen-walk approach on developing a series of novel opioid ligands containing an azaindole moiety at the C6-position of the epoxymorphinan skeleton. In vitro study results showed that introducing a ...

    Abstract In the present work, we reported the application of a nitrogen-walk approach on developing a series of novel opioid ligands containing an azaindole moiety at the C6-position of the epoxymorphinan skeleton. In vitro study results showed that introducing a nitrogen atom around the indole moiety not only retained excellent binding affinity, but also led to significant functional switch at the mu opioid receptor (MOR). Further computational investigations provided corroborative evidence and plausible explanations of the results of the in vitro studies. Overall, our current work implemented a series of novel MOR ligands with high binding affinity and considerably low efficacy, which may shed light on rational design of low efficacy MOR ligands for opioid use disorder therapeutics.
    MeSH term(s) Binding Sites ; Humans ; Ligands ; Models, Molecular ; Molecular Docking Simulation ; Naltrexone/analogs & derivatives ; Naltrexone/chemical synthesis ; Naltrexone/pharmacology ; Nitrogen/chemistry ; Opioid-Related Disorders/drug therapy ; Protein Conformation ; Receptors, Opioid, mu/drug effects
    Chemical Substances Ligands ; Receptors, Opioid, mu ; Naltrexone (5S6W795CQM) ; Nitrogen (N762921K75)
    Language English
    Publishing date 2021-03-22
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2021.127953
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  3. Article ; Online: Role of efficacy as a determinant of locomotor activation by mu-opioid receptor (MOR) ligands in female and male mice. II. Effects of novel MOR-selective phenylmorphans with high-to-low MOR efficacy.

    Santos, Edna J / Nassehi, Nima / Bow, Eric W / Chambers, Dana R / Gutman, Eugene S / Jacobson, Arthur E / Lutz, Joshua A / Marsh, Samuel A / Rice, Kenner C / Sulima, Agnieszka / Selley, Dana E / Negus, S Stevens

    Pharmacology research & perspectives

    2023  Volume 11, Issue 4, Page(s) e01111

    Abstract: Low-efficacy mu-opioid receptor (MOR) agonists represent promising therapeutics, but existing compounds (e.g., buprenorphine, nalbuphine) span a limited range of low MOR efficacies and have poor MOR selectivity. Accordingly, new and selective low- ... ...

    Abstract Low-efficacy mu-opioid receptor (MOR) agonists represent promising therapeutics, but existing compounds (e.g., buprenorphine, nalbuphine) span a limited range of low MOR efficacies and have poor MOR selectivity. Accordingly, new and selective low-efficacy MOR agonists are of interest. A novel set of chiral C9-substituted phenylmorphans has been reported to display improved MOR selectivity and a range of high-to-low MOR efficacies under other conditions; however, a full opioid receptor binding profile for these drugs has not been described. Additionally, studies in mice will be useful for preclinical characterization of these novel compounds, but the pharmacology of these drugs in mice has also not been examined. Accordingly, the present study characterized the binding selectivity and in vitro efficacy of these compounds using assays of opioid receptor binding and ligand-stimulated [
    MeSH term(s) Animals ; Female ; Male ; Mice ; Analgesics, Opioid/pharmacology ; Buprenorphine/pharmacology ; Guanosine 5'-O-(3-Thiotriphosphate) ; Ligands ; Receptors, Opioid, mu/agonists
    Chemical Substances Analgesics, Opioid ; Buprenorphine (40D3SCR4GZ) ; Guanosine 5'-O-(3-Thiotriphosphate) (37589-80-3) ; Ligands ; phenylmorphan (91190-14-6) ; tianeptine (0T493YFU8O) ; Receptors, Opioid, mu
    Language English
    Publishing date 2023-06-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, N.I.H., Intramural
    ZDB-ID 2740389-0
    ISSN 2052-1707 ; 2052-1707
    ISSN (online) 2052-1707
    ISSN 2052-1707
    DOI 10.1002/prp2.1111
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  4. Article ; Online: Molecular Pharmacology Profiling of Phenylfentanil and Its Analogues to Understand the Putative Involvement of an Adrenergic Mechanism in Fentanyl-Induced Respiratory Depression.

    Li, Mengchu / Pagare, Piyusha P / Ma, Hongguang / St Onge, Celsey M / Mendez, Rolando E / Gillespie, James C / Stevens, David L / Dewey, William L / Selley, Dana E / Zhang, Yan

    Journal of medicinal chemistry

    2023  Volume 67, Issue 1, Page(s) 603–619

    Abstract: While there are approved therapeutics to treat opioid overdoses, the need for treatments to reverse overdoses due to ultrapotent fentanyls remains unmet. This may be due in part to an adrenergic mechanism of fentanyls in addition to their stereotypical ... ...

    Abstract While there are approved therapeutics to treat opioid overdoses, the need for treatments to reverse overdoses due to ultrapotent fentanyls remains unmet. This may be due in part to an adrenergic mechanism of fentanyls in addition to their stereotypical mu-opioid receptor (MOR) effects. Herein, we report our efforts to further understanding of the functions these distinct mechanisms impart. Employing the known MOR neutral antagonist phenylfentanil as a lead, 17 analogues were designed based on the concept of isosteric replacement. To probe mechanisms of action, these analogues were pharmacologically evaluated in vitro and in vivo, while in silico modeling studies were also conducted on phenylfentanil. While it did not indicate MOR involvement in vivo, phenylfentanil yielded respiratory minute volumes similar to those caused by fentanyl. Taken together with molecular modeling studies, these results indicated that respiratory effects of fentanyls may also correlate to inhibition of both α1A- and α1B-adrenergic receptors.
    MeSH term(s) Fentanyl/pharmacology ; Adrenergic Agents ; Receptors, Opioid, mu ; Narcotic Antagonists ; Analgesics, Opioid/pharmacology
    Chemical Substances Fentanyl (UF599785JZ) ; Adrenergic Agents ; Receptors, Opioid, mu ; Narcotic Antagonists ; Analgesics, Opioid
    Language English
    Publishing date 2023-12-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.3c01801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Amphetamine maintenance differentially modulates effects of cocaine, methylenedioxypyrovalerone (MDPV), and methamphetamine on intracranial self-stimulation and nucleus accumbens dopamine in rats.

    Johnson, Amy R / Banks, Matthew L / Selley, Dana E / Negus, S Stevens

    Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology

    2018  Volume 43, Issue 8, Page(s) 1753–1762

    Abstract: Amphetamine maintenance is effective clinically to reduce the consumption of the monoamine uptake inhibitor cocaine but not of the monoamine releaser methamphetamine, and its effectiveness in treating the abuse of other psychostimulants is not known. The ...

    Abstract Amphetamine maintenance is effective clinically to reduce the consumption of the monoamine uptake inhibitor cocaine but not of the monoamine releaser methamphetamine, and its effectiveness in treating the abuse of other psychostimulants is not known. The mechanisms for differential amphetamine-maintenance effectiveness to treat different types of psychostimulant abuse are also not known. Accordingly, the present study compared the effects of amphetamine maintenance on abuse-related behavioral and neurochemical effects of cocaine, methamphetamine, and the "bath salts" constituent 3,4-methylenedioxypyrovalerone (MDPV) in rats. In behavioral studies, rats were trained to lever press for electrical brain stimulation in an intracranial self-stimulation (ICSS) procedure. In neurochemical studies, nucleus accumbens (NAc) levels of dopamine (DA) and serotonin (5-HT) were monitored by in vivo microdialysis. Cocaine, methamphetamine, and MDPV each produced dose-dependent ICSS facilitation and increases in NAc DA; cocaine and methamphetamine also increased NAc 5-HT. Amphetamine maintenance (0.32 mg/kg/h × 7 days) produced (1) sustained increases in basal ICSS and NAc DA with no change in NAc 5-HT, (2) blockade of cocaine but not methamphetamine effects on ICSS and NAc DA, and (3) no blockade of cocaine- or methamphetamine-induced increases in NAc 5-HT. Amphetamine maintenance blocked the increases in NAc DA produced by the selective DA uptake inhibitor MDPV, but it did not block MDPV-induced ICSS facilitation. These results show different effects of amphetamine maintenance on behavioral and neurochemical effects of different psychostimulants. The selective effectiveness of amphetamine maintenance to treat cocaine abuse may reflect attenuation of cocaine-induced increases in NAc DA while preserving cocaine-induced increases in NAc 5-HT.
    MeSH term(s) Amphetamine/pharmacology ; Animals ; Benzodioxoles/pharmacology ; Central Nervous System Agents/pharmacology ; Cocaine/pharmacology ; Dopamine/metabolism ; Male ; Methamphetamine/pharmacology ; Nucleus Accumbens/drug effects ; Nucleus Accumbens/metabolism ; Pyrrolidines/pharmacology ; Rats, Sprague-Dawley ; Self Stimulation ; Serotonin/metabolism
    Chemical Substances Benzodioxoles ; Central Nervous System Agents ; Pyrrolidines ; Serotonin (333DO1RDJY) ; Methamphetamine (44RAL3456C) ; Amphetamine (CK833KGX7E) ; 3,4-methylenedioxypyrovalerone (E7LD6JMR0L) ; Cocaine (I5Y540LHVR) ; Dopamine (VTD58H1Z2X)
    Language English
    Publishing date 2018-04-19
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 639471-1
    ISSN 1740-634X ; 0893-133X
    ISSN (online) 1740-634X
    ISSN 0893-133X
    DOI 10.1038/s41386-018-0071-3
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  6. Article ; Online: Exploring the putative mechanism of allosteric modulations by mixed-action kappa/mu opioid receptor bitopic modulators.

    Wang, Huiqun / Cao, Danni / Gillespie, James C / Mendez, Rolando E / Selley, Dana E / Liu-Chen, Lee-Yuan / Zhang, Yan

    Future medicinal chemistry

    2021  Volume 13, Issue 6, Page(s) 551–573

    Abstract: The modulation and selectivity mechanisms of seven mixed-action kappa opioid receptor (KOR)/mu opioid receptor (MOR) bitopic modulators were explored. Molecular modeling results indicated that the 'message' moiety of seven bitopic modulators shared the ... ...

    Abstract The modulation and selectivity mechanisms of seven mixed-action kappa opioid receptor (KOR)/mu opioid receptor (MOR) bitopic modulators were explored. Molecular modeling results indicated that the 'message' moiety of seven bitopic modulators shared the same binding mode with the orthosteric site of the KOR and MOR, whereas the 'address' moiety bound with different subdomains of the allosteric site of the KOR and MOR. The 'address' moiety of seven bitopic modulators bound to different subdomains of the allosteric site of the KOR and MOR may exhibit distinguishable allosteric modulations to the binding affinity and/or efficacy of the 'message' moiety. Moreover, the 3-hydroxy group on the phenolic moiety of the seven bitopic modulators induced selectivity to the KOR over the MOR.
    MeSH term(s) Allosteric Regulation ; Allosteric Site ; Binding Sites ; Humans ; Ligands ; Molecular Docking Simulation ; Morphinans/chemistry ; Morphinans/metabolism ; Naltrexone/analogs & derivatives ; Naltrexone/chemistry ; Naltrexone/metabolism ; Protein Binding ; Receptors, Opioid, kappa/chemistry ; Receptors, Opioid, kappa/metabolism ; Receptors, Opioid, mu/chemistry ; Receptors, Opioid, mu/metabolism ; Spiro Compounds/chemistry ; Spiro Compounds/metabolism ; Thermodynamics
    Chemical Substances Ligands ; Morphinans ; Receptors, Opioid, kappa ; Receptors, Opioid, mu ; Spiro Compounds ; TRK 820 (25CC4N0P8J) ; Naltrexone (5S6W795CQM) ; beta-funaltrexamine (72782-05-9)
    Language English
    Publishing date 2021-02-16
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 1756-8927
    ISSN (online) 1756-8927
    DOI 10.4155/fmc-2020-0308
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  7. Article ; Online: Novel bivalent ligands carrying potential antinociceptive effects by targeting putative mu opioid receptor and chemokine receptor CXCR4 heterodimers.

    Ma, Hongguang / Li, Mengchu / Pagare, Piyusha P / Wang, Huiqun / Nassehi, Nima / Santos, Edna J / Stevens Negus, S / Selley, Dana E / Zhang, Yan

    Bioorganic chemistry

    2022  Volume 120, Page(s) 105641

    Abstract: The functional interactions between opioid and chemokine receptors have been implicated in the pathological process of chronic pain. Mounting studies have indicated the possibility that a MOR-CXCR4 heterodimer may be involved in nociception and related ... ...

    Abstract The functional interactions between opioid and chemokine receptors have been implicated in the pathological process of chronic pain. Mounting studies have indicated the possibility that a MOR-CXCR4 heterodimer may be involved in nociception and related pharmacologic effects. Herein we have synthesized a series of bivalent ligands containing both MOR agonist and CXCR4 antagonist pharmacophores with an aim to investigate the functional interactions between these two receptors. In vitro studies demonstrated reasonable recognition of designed ligands at both respective receptors. Further antinociceptive testing in mice revealed compound 1a to be the most promising member of this series. Additional molecular modeling studies corroborated the findings observed. Taken together, we identified the first bivalent ligand 1a showing promising antinociceptive effect by targeting putative MOR-CXCR4 heterodimers, which may serve as a novel chemical probe to further develop more potent bivalent ligands with potential application in analgesic therapies for chronic pain management.
    MeSH term(s) Analgesics/pharmacology ; Analgesics/therapeutic use ; Animals ; Ligands ; Mice ; Models, Molecular ; Receptors, Opioid, mu ; Signal Transduction
    Chemical Substances Analgesics ; Ligands ; Receptors, Opioid, mu
    Language English
    Publishing date 2022-01-24
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 120080-x
    ISSN 1090-2120 ; 0045-2068
    ISSN (online) 1090-2120
    ISSN 0045-2068
    DOI 10.1016/j.bioorg.2022.105641
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  8. Article ; Online: Characterization of a Potential KOR/DOR Dual Agonist with No Apparent Abuse Liability via a Complementary Structure-Activity Relationship Study on Nalfurafine Analogues.

    Li, Mengchu / Stevens, David L / Arriaga, Michelle / Townsend, E Andrew / Mendez, Rolando E / Blajkevch, Nadejda A / Selley, Dana E / Banks, Matthew L / Negus, S Stevens / Dewey, William L / Zhang, Yan

    ACS chemical neuroscience

    2022  Volume 13, Issue 24, Page(s) 3608–3628

    Abstract: Discovery of analgesics void of abuse liability is critical to battle the opioid crisis in the United States. Among many strategies to achieve this goal, targeting more than one opioid receptor seems promising to minimize this unwanted side effect while ... ...

    Abstract Discovery of analgesics void of abuse liability is critical to battle the opioid crisis in the United States. Among many strategies to achieve this goal, targeting more than one opioid receptor seems promising to minimize this unwanted side effect while achieving a reasonable therapeutic profile. In the process of understanding the structure-activity relationship of nalfurafine, we identified a potential analgesic agent, NMF, as a dual kappa opioid receptor/delta opioid receptor agonist with minimum abuse liability. Further characterizations, including primary in vitro ADMET studies (hERG toxicity, plasma protein binding, permeability, and hepatic metabolism), and in vivo pharmacodynamic and toxicity profiling (time course, abuse liability, tolerance, withdrawal, respiratory depression, body weight, and locomotor activity) further confirmed NMF as a promising drug candidate for future development.
    MeSH term(s) Humans ; Analgesics, Opioid/chemistry ; Receptors, Opioid, kappa/agonists ; Morphinans/pharmacology ; Analgesics/pharmacology ; Structure-Activity Relationship ; Receptors, Opioid, mu/agonists
    Chemical Substances TRK 820 (25CC4N0P8J) ; Analgesics, Opioid ; Receptors, Opioid, kappa ; Morphinans ; Analgesics ; Receptors, Opioid, mu
    Language English
    Publishing date 2022-11-30
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 1948-7193
    ISSN (online) 1948-7193
    DOI 10.1021/acschemneuro.2c00526
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  9. Article ; Online: A Journey through Diastereomeric Space: The Design, Synthesis, In Vitro and In Vivo Pharmacological Activity, and Molecular Modeling of Novel Potent Diastereomeric MOR Agonists and Antagonists.

    Chambers, Dana R / Sulima, Agnieszka / Luo, Dan / Prisinzano, Thomas E / Goldberg, Alexander / Xie, Bing / Shi, Lei / Paronis, Carol A / Bergman, Jack / Nassehi, Nima / Selley, Dana E / Imler, Gregory H / Jacobson, Arthur E / Rice, Kenner C

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 19

    Abstract: Four sets of diastereomeric C9-alkenyl 5-phenylmorphans, varying in the length of the C9-alkenyl chain, were designed to examine the effect of these spatially distinct ligands on opioid receptors. Functional activity was obtained by forskolin-induced ... ...

    Abstract Four sets of diastereomeric C9-alkenyl 5-phenylmorphans, varying in the length of the C9-alkenyl chain, were designed to examine the effect of these spatially distinct ligands on opioid receptors. Functional activity was obtained by forskolin-induced cAMP accumulation assays and several compounds were examined in the [
    MeSH term(s) Animals ; CHO Cells ; Colforsin ; Cricetinae ; Ligands ; Mice ; Morphine/pharmacology ; Naltrexone ; Receptors, Opioid/metabolism ; Receptors, Opioid, delta/metabolism ; Receptors, Opioid, mu/metabolism ; Respiratory Insufficiency
    Chemical Substances Ligands ; Receptors, Opioid ; Receptors, Opioid, delta ; Receptors, Opioid, mu ; Colforsin (1F7A44V6OU) ; Naltrexone (5S6W795CQM) ; Morphine (76I7G6D29C)
    Language English
    Publishing date 2022-09-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27196455
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  10. Article ; Online: Structural Alterations of the "Address" Moiety of NAN Leading to the Discovery of a Novel Opioid Receptor Modulator with Reduced hERG Toxicity.

    Ma, Hongguang / Pagare, Piyusha P / Li, Mengchu / Neel, Logan T / Mendez, Rolando E / Gillespie, James C / Stevens, David L / Dewey, William L / Selley, Dana E / Zhang, Yan

    Journal of medicinal chemistry

    2022  Volume 66, Issue 1, Page(s) 577–595

    Abstract: The search for selective opioid ligands with desired pharmacological potency and improved safety profile has always been an area of interest. Our previous effort yielded a potent opioid modulator, NAN, a 6α- ...

    Abstract The search for selective opioid ligands with desired pharmacological potency and improved safety profile has always been an area of interest. Our previous effort yielded a potent opioid modulator, NAN, a 6α-
    MeSH term(s) Humans ; Receptors, Opioid ; Analgesics, Opioid/pharmacology ; Ether-A-Go-Go Potassium Channels ; Ligands
    Chemical Substances Receptors, Opioid ; compound 21 (RC2V4W0EYC) ; Analgesics, Opioid ; Ether-A-Go-Go Potassium Channels ; Ligands
    Language English
    Publishing date 2022-12-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.2c01499
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