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Ma H, Brust T, Frankowski KJ, Lovell KM, Cameron MD, Bohn LM, Aubé J. Advances in Sulfonamide Kappa Opioid Receptor Antagonists: Structural Refinement and Evaluation of CNS Clearance. ACS Chem Neurosci 2022; 13:1315-1332. [PMID: 35410469 DOI: 10.1021/acschemneuro.2c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Focused modification of a sulfonamide-based kappa opioid receptor (KOR) antagonist series previously reported by this laboratory was investigated. A total of 32 analogues were prepared to explore linker replacement, constraint manipulation, and aryl group or amine substitution. All analogues were assayed for KOR antagonist activity, and the initial lead compound was assessed for in vivo CNS penetration. The most improved analogue possessed a 4-fold increase of potency (IC50 = 18.9 ± 4.4 nM) compared with the lead compound (IC50 = 83.5 ± 20 nM) from an earlier work. The initial lead compound was found to attain suitable brain levels and to possess a shorter clearance time than canonical KOR antagonists such as JDTic.
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Affiliation(s)
- Huiyong Ma
- Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, CB 7363, Chapel Hill, North Carolina 27599, United States
- Department of Medicinal Chemistry, University of Kansas, 2034 Becker Drive, Lawrence, Kansas 66047, United States
| | - Tarsis Brust
- Departments of Molecular Therapeutics and Neuroscience, The Scripps Research Institute, 130 Scripps Way, #2A2, Jupiter, Florida 33458, United States
| | - Kevin J Frankowski
- Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, CB 7363, Chapel Hill, North Carolina 27599, United States
- Department of Medicinal Chemistry, University of Kansas, 2034 Becker Drive, Lawrence, Kansas 66047, United States
| | - Kimberly M Lovell
- Departments of Molecular Therapeutics and Neuroscience, The Scripps Research Institute, 130 Scripps Way, #2A2, Jupiter, Florida 33458, United States
| | - Michael D Cameron
- Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, #2A1, Jupiter, Florida 33458, United States
| | - Laura M Bohn
- Departments of Molecular Therapeutics and Neuroscience, The Scripps Research Institute, 130 Scripps Way, #2A2, Jupiter, Florida 33458, United States
| | - Jeffrey Aubé
- Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, 125 Mason Farm Road, CB 7363, Chapel Hill, North Carolina 27599, United States
- Department of Medicinal Chemistry, University of Kansas, 2034 Becker Drive, Lawrence, Kansas 66047, United States
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7β-Methyl substituent is a structural locus associated with activity cliff for nepenthone analogues. Bioorg Med Chem 2018; 26:4254-4263. [DOI: 10.1016/j.bmc.2018.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/08/2018] [Accepted: 07/11/2018] [Indexed: 02/07/2023]
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Bohn LM, Aubé J. Seeking (and Finding) Biased Ligands of the Kappa Opioid Receptor. ACS Med Chem Lett 2017; 8:694-700. [PMID: 28740600 PMCID: PMC5512133 DOI: 10.1021/acsmedchemlett.7b00224] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 06/14/2017] [Indexed: 12/13/2022] Open
Abstract
The discovery and characterization of two classes of kappa opioid receptor agonists that are biased for G protein over βarrestin signaling are described.
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Affiliation(s)
- Laura M. Bohn
- Departments
of Molecular Medicine and Neuroscience, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Jeffrey Aubé
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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Abstract
This paper is the thirty-eighth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2015 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia, stress and social status, tolerance and dependence, learning and memory, eating and drinking, drug abuse and alcohol, sexual activity and hormones, pregnancy, development and endocrinology, mental illness and mood, seizures and neurologic disorders, electrical-related activity and neurophysiology, general activity and locomotion, gastrointestinal, renal and hepatic functions, cardiovascular responses, respiration and thermoregulation, and immunological responses.
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Feng Q, Zhao M, Gan T, Zhu H, Wang Y, Zhao S, Wang Y, Wu J, Peng S. DHDMIQK(KAP): a novel nano-delivery system of dihydroxyl-tetrahydro-isoquinoline-3-carboxylic acid and KPAK towards the thrombus. J Mater Chem B 2016; 4:5991-6003. [PMID: 32263488 DOI: 10.1039/c6tb00874g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Vascular thrombosis is a major risk of the onset of stroke and so novel therapeutic candidates have been attracting interest. In this context, here docking based computer assisted screening and mesoscale simulation were used to design N-[(S)-6,7-dihydroxy-1,1-dimethyl-1,2,3,4-tetrahydroisoquinoline-3-carbonyl]-Lys(Pro-Ala-Lys), DHDMIQK(KAP), for inhibiting P-selectin expression. In vitro, 1 nM of DHDMIQK(KAP) effectively down-regulated P-selectin expression. In water, in rat plasma and in the solid state DHDMIQK(KAP) formed nanoparticles of a size capable of suitable delivery in the blood circulation. FT-MS and NOESY 2D NMR spectra showed DHDMIQK(KAP) formed hexamers, identified the intermolecular interactions of the hexamer, and assigned the hexamer a butterfly like conformation. Transmission electron microscopy, scanning electron microscopy and atomic force microscopy (AFM) imaged DHDMIQK(KAP) forming size-suitable nanoparticles for safe delivery in the blood circulation. In particular, AFM images showed that the nanoparticles effectively adhered onto the surfaces of the platelets. In vivo DHDMIQK(KAP) lysed the thrombus and inhibited thrombosis with a minimal effective dose of 0.01 nmol kg-1. FT-MS spectrum analyses defined a specific distribution of DHDMIQK(KAP) in the thrombus, but not in the blood and vital organs. Therefore, DHDMIQK(KAP) should be a novel nano-delivery system of 6,7-dihydroxyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid and KPAK to target the thrombus.
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Affiliation(s)
- Qiqi Feng
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P. R. China.
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Design, synthesis and biological evaluation of novel tetrahydroisoquinoline derivatives as potential PDE4 inhibitors. Bioorg Med Chem Lett 2015; 25:4610-4. [DOI: 10.1016/j.bmcl.2015.08.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/12/2015] [Accepted: 08/17/2015] [Indexed: 11/22/2022]
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Zhou L, Stahl EL, Lovell KM, Frankowski KJ, Prisinzano TE, Aubé J, Bohn LM. Characterization of kappa opioid receptor mediated, dynorphin-stimulated [35S]GTPγS binding in mouse striatum for the evaluation of selective KOR ligands in an endogenous setting. Neuropharmacology 2015; 99:131-41. [PMID: 26160155 DOI: 10.1016/j.neuropharm.2015.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/07/2015] [Accepted: 07/03/2015] [Indexed: 11/29/2022]
Abstract
Differential modulation of kappa opioid receptor (KOR) signaling has been a proposed strategy for developing therapies for drug addiction and depression by either activating or blocking this receptor. Hence, there have been significant efforts to generate ligands with diverse pharmacological properties including partial agonists, antagonists, allosteric modulators as well as ligands that selectively activate some pathways while not engaging others (biased agonists). It is becoming increasingly evident that G protein coupled receptor signaling events are context dependent and that what may occur in cell based assays may not be fully indicative of signaling events that occur in the naturally occurring environment. As new ligands are developed, it is important to assess their signaling capacity in relevant endogenous systems in comparison to the performance of endogenous agonists. Since KOR is considered the cognate receptor for dynorphin peptides we have evaluated the selectivity profiles of dynorphin peptides in wild-type (WT), KOR knockout (KOR-KO), and mu opioid receptor knockout (MOR-KO) mice using [35S]GTPγS binding assay in striatal membrane preparations. We find that while the small molecule KOR agonist U69,593, is very selective for KOR, dynorphin peptides promiscuously stimulate G protein signaling in striatum. Furthermore, our studies demonstrate that norBNI and 5'GNTI are highly nonselective antagonists as they maintain full potency and efficacy against dynorphin signaling in the absence of KOR. Characterization of a new KOR antagonist, which may be more selective than NorBNI and 5'GNTI, is presented using this approach.
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Affiliation(s)
- Lei Zhou
- Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA; Department of Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Edward L Stahl
- Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA; Department of Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Kimberly M Lovell
- Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA; Department of Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Kevin J Frankowski
- Department of Medicinal Chemistry, University of Kansas, Lawrence, KS 66047, USA
| | - Thomas E Prisinzano
- Department of Medicinal Chemistry, University of Kansas, Lawrence, KS 66047, USA
| | - Jeffrey Aubé
- Department of Medicinal Chemistry, University of Kansas, Lawrence, KS 66047, USA
| | - Laura M Bohn
- Department of Molecular Therapeutics, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA; Department of Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA.
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