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Hansen DT, Rueb NJ, Levinzon ND, Cheatham TE, Gaston R, Tanvir Ahmed K, Osburn-Staker S, Cox JE, Dudley GB, Barrios AM. The mechanism of covalent inhibition of LAR phosphatase by illudalic acid. Bioorg Med Chem Lett 2024; 104:129740. [PMID: 38599294 PMCID: PMC11057956 DOI: 10.1016/j.bmcl.2024.129740] [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] [Received: 01/24/2024] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/12/2024]
Abstract
Leukocyte antigen-related (LAR) phosphatase is a receptor-type protein tyrosine phosphatase involved in cellular signaling and associated with human disease including cancer and metabolic disorders. Selective inhibition of LAR phosphatase activity by well characterized and well validated small molecules would provide key insights into the roles of LAR phosphatase in health and disease, but identifying selective inhibitors of LAR phosphatase activity has been challenging. Recently, we described potent and selective inhibition of LAR phosphatase activity by the fungal natural product illudalic acid. Here we provide a detailed biochemical characterization of the adduct formed between LAR phosphatase and illudalic acid. A mass spectrometric analysis indicates that two cysteine residues are covalently labeled by illudalic acid and a related analog. Mutational analysis supports the hypothesis that inhibition of LAR phosphatase activity is due primarily to the adduct with the catalytic cysteine residue. A computational study suggests potential interactions between the illudalic acid moiety and the enzyme active site. Taken together, these data offer novel insights into the mechanism of inhibition of LAR phosphatase activity by illudalic acid.
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Affiliation(s)
- Daniel T Hansen
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Nicole J Rueb
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Nathan D Levinzon
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Thomas E Cheatham
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Robert Gaston
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Kh Tanvir Ahmed
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Sandra Osburn-Staker
- Mass Spectrometry and Proteomics Facility, University of Utah, Salt Lake City, UT 84112, USA
| | - James E Cox
- Mass Spectrometry and Proteomics Facility, University of Utah, Salt Lake City, UT 84112, USA
| | - Gregory B Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Amy M Barrios
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
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2
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Mohammed Butt A, Rupareliya V, Hariharan A, Kumar H. Building a pathway to recovery: Targeting ECM remodeling in CNS injuries. Brain Res 2023; 1819:148533. [PMID: 37586675 DOI: 10.1016/j.brainres.2023.148533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
Extracellular matrix (ECM) is a complex and dynamic network of proteoglycans, proteins, and other macromolecules that surrounds cells in tissues. The ECM provides structural support to cells and plays a critical role in regulating various cellular functions. ECM remodeling is a dynamic process involving the breakdown and reconstruction of the ECM. This process occurs naturally during tissue growth, wound healing, and tissue repair. However, in the context of central nervous system (CNS) injuries, dysregulated ECM remodeling can lead to the formation of fibrotic and glial scars. CNS injuries encompass various traumatic events, including concussions and fractures. Following CNS trauma, the formation of glial and fibrotic scars becomes prominent. Glial scars primarily consist of reactive astrocytes, while fibrotic scars are characterized by an abundance of ECM proteins. ECM remodeling plays a pivotal and tightly regulated role in the development of these scars after spinal cord and brain injuries. Various factors like ECM components, ECM remodeling enzymes, cell surface receptors of ECM molecules, and downstream pathways of ECM molecules are responsible for the remodeling of the ECM. The aim of this review article is to explore the changes in ECM during normal physiological conditions and following CNS injuries. Additionally, we discuss various approaches that target various factors responsible for ECM remodeling, with a focus on promoting axon regeneration and functional recovery after CNS injuries. By targeting ECM remodeling, it may be possible to enhance axonal regeneration and facilitate functional recovery after CNS injuries.
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Affiliation(s)
- Ayub Mohammed Butt
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Vimal Rupareliya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - A Hariharan
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India.
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3
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Tavakoli A, Dudley GB. Synthesis of Coprinol and Several Alcyopterosin Sesquiterpenes by Regioselective [2 + 2 + 2] Alkyne Cyclotrimerization. J Org Chem 2022; 87:14909-14914. [PMID: 36215202 DOI: 10.1021/acs.joc.2c01741] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Alkyne [2 + 2 + 2] cyclotrimerization is a strategically attractive but tactically challenging approach to the synthesis of highly substituted benzene rings. Here, a bimolecular regioselective cyclotrimerization is applied to the total synthesis of the natural product coprinol and several related alcyopterosins from the illudalane family of sesquiterpenes. The synthesis of coprinol from dimedone was completed in six steps and a 57% overall yield. Alternative functional group manipulations lead to alcyopterosins A, B, and O and two additional congeners, all within six steps.
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Affiliation(s)
- Amir Tavakoli
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Gregory B Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
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4
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Blake MR, Gardner RT, Jin H, Staffenson MA, Rueb NJ, Barrios AM, Dudley GB, Cohen MS, Habecker BA. Small Molecules Targeting PTPσ-Trk Interactions Promote Sympathetic Nerve Regeneration. ACS Chem Neurosci 2022; 13:688-699. [PMID: 35156811 PMCID: PMC9112862 DOI: 10.1021/acschemneuro.1c00854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Chondroitin sulfate proteoglycans (CSPGs) prevent sympathetic nerve regeneration in the heart after myocardial infarction and prevent central nerve regrowth after traumatic brain injury and spinal cord injury. Currently, there are no small-molecule therapeutics to promote nerve regeneration through CSPG-containing scars. CSPGs bind to monomers of receptor protein tyrosine phosphatase sigma (PTPσ) on the surface of neurons, enhancing the ability of PTPσ to bind and dephosphorylate tropomyosin receptor kinases (Trks), inhibiting their activity and preventing axon outgrowth. Targeting PTPσ-Trk interactions is thus a potential therapeutic target. Here, we describe the development and synthesis of small molecules (HJ-01 and HJ-02) that disrupt PTPσ interactions with Trks, enhance Trk signaling, and promote sympathetic nerve regeneration over CSPGs.
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Affiliation(s)
- Matthew R. Blake
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
- Graduate Program in Biomedical Sciences, Oregon Health and Science University, Portland, OR 97239, USA
| | - Ryan T. Gardner
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
| | - Haihong Jin
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
| | - Melanie A. Staffenson
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
| | - Nicole J. Rueb
- Department of Medicinal Chemistry, University of Utah College of Pharmacy, Salt Lake City, UT 84112, USA
| | - Amy M. Barrios
- Department of Medicinal Chemistry, University of Utah College of Pharmacy, Salt Lake City, UT 84112, USA
| | - Gregory B. Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, USA
| | - Michael S. Cohen
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
| | - Beth A. Habecker
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA
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5
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Henderson IM, Zeng F, Bhuiyan NH, Luo D, Martinez M, Smoake J, Bi F, Perera C, Johnson D, Prisinzano TE, Wang W, Uhl GR. Structure-activity studies of PTPRD phosphatase inhibitors identify a 7-cyclopentymethoxy illudalic acid analog candidate for development. Biochem Pharmacol 2022; 195:114868. [PMID: 34863978 PMCID: PMC9248268 DOI: 10.1016/j.bcp.2021.114868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/27/2021] [Accepted: 11/30/2021] [Indexed: 12/30/2022]
Abstract
Interest in development of potent, selective inhibitors of the phosphatase from the receptor type protein tyrosine phosphatase PTPRD as antiaddiction agents is supported by human genetics, mouse models and studies of our lead compound PTPRD phosphatase inhibitor, 7-butoxy illudalic acid analog 1 (7-BIA). We now report structure-activity relationships for almost 70 7-BIA-related compounds and results that nominate a 7- cyclopentyl methoxy analog as a candidate for further development. While efforts to design 7-BIA analogs with substitutions for other parts failed to yield potent inhibitors of PTPRD's phosphatase, ten 7-position substituted analogs displayed greater potency at PTPRD than 7-BIA. Several were more selective for PTPRD vs the receptor type protein tyrosine phosphatases S, F and J or the nonreceptor type protein tyrosine phosphatase N1 (PTPRS, PTPRF, PTPRJ or PTPN1/PTP1B), phosphatases at which 7-BIA displays activity. In silico studies aided design of novel analogs. A 7-position cyclopentyl methoxy substituted 7-BIA analog termed NHB1109 displayed 600-700 nM potencies in inhibiting PTPRD and PTPRS, improved selectivity vs PTPRS, PTPRF, PTPRJ or PTPN1/PTP1B phosphatases, no substantial potency at other protein tyrosine phosphatases screened, no significant potency at any of the targets of clinically-useful drugs identified in EUROFINS screens and significant oral bioavailability. Oral doses up to 200 mg/kg were well tolerated by mice, though higher doses resulted in reduced weight and apparent ileus without clear organ histopathology. NHB1109 provides a good candidate to advance to in vivo studies in addiction paradigms and toward human use to reduce reward from addictive substances.
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Affiliation(s)
- Ian M Henderson
- Biomedical Research Institute of New Mexico, Albuquerque, NM, United States; New Mexico VA Healthcare System, Albuquerque, NM, United States
| | - Fanxun Zeng
- College of Pharmacy, University of Arizona, Tucson, AZ, United States
| | - Nazmul H Bhuiyan
- College of Pharmacy, University of Kentucky, Lexington, KY, United States
| | - Dan Luo
- College of Pharmacy, University of Kentucky, Lexington, KY, United States
| | - Maria Martinez
- Biomedical Research Institute of New Mexico, Albuquerque, NM, United States; New Mexico VA Healthcare System, Albuquerque, NM, United States
| | - Jane Smoake
- Biomedical Research Institute of New Mexico, Albuquerque, NM, United States; New Mexico VA Healthcare System, Albuquerque, NM, United States
| | - Fangchao Bi
- College of Pharmacy, University of Arizona, Tucson, AZ, United States
| | | | | | | | - Wei Wang
- College of Pharmacy, University of Arizona, Tucson, AZ, United States.
| | - George R Uhl
- Biomedical Research Institute of New Mexico, Albuquerque, NM, United States; New Mexico VA Healthcare System, Albuquerque, NM, United States; Departments of Neurology, Neuroscience and Molecular Genetics and Microbiology, University of New Mexico, Albuquerque, NM, United States; Departments of Neurology and Pharmacology, University of Maryland School of Medicine, Baltimore, MD, United States; VA Maryland Healthcare System, Baltimore, MD, United States.
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6
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Fulo HF, Rueb NJ, Gaston R, Batsomboon P, Ahmed KT, Barrios AM, Dudley GB. Synthesis of illudalic acid and analogous phosphatase inhibitors. Org Biomol Chem 2021; 19:10596-10600. [PMID: 34847212 PMCID: PMC8906844 DOI: 10.1039/d1ob02106k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Developing an efficient, concise synthesis of the fungal natural product illudalic acid has been a long-standing challenge, made more pressing by the recent discovery that illudalic acid and analogs are selective phosphatase inhibitors. Syntheses of illudalic acid have become progressively more efficient over the decades yet remain strategically grounded in a 17-step synthesis reported in 1977. Here we validate a two-step process-convergent [4 + 2] benzannulation and one-pot coordinated functional group manipulations-for preparing the key trifunctional pharmacophore of illudalic acid. The modular building blocks are readily available in 2-3 steps, for a longest linear sequence (LLS) of 5 steps to illudalic acid from 3,3-dimethylcyclopentanone. A small collection of analogous indanes and tetralins featuring the same pharmacophore were prepared by a similar route. These compounds potently and selectively inhibit the human leukocyte common antigen-related (LAR) subfamily of protein tyrosine phosphatases (PTPs). Evidence supporting a postulated covalent ligation mechanism is provided herein.
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Affiliation(s)
- Harvey F Fulo
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA.
| | - Nicole J Rueb
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah, 84112, USA.
| | - Robert Gaston
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA.
| | - Paratchata Batsomboon
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA.
| | - Kh Tanvir Ahmed
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA.
| | - Amy M Barrios
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah, 84112, USA.
| | - Gregory B Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA.
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7
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Gaston R, Geldenhuys WJ, Dudley GB. Synthesis of Illudinine from Dimedone and Identification of Activity as a Monoamine Oxidase Inhibitor. J Org Chem 2020; 85:13429-13437. [PMID: 32830978 DOI: 10.1021/acs.joc.0c01301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The fungal metabolite illudinine is prepared in seven steps and ca. 55% overall yield from dimedone using an "open and shut" (ring-opening and ring-closing) strategy. Tandem ring-opening fragmentation and olefination of dimedone establishes alkyne and vinylarene functionality linked by a neopentylene tether. Oxidative cycloisomerization then provides the illudinine framework. The key innovation in this second-generation synthesis of illudinine is the use of the nitrile functional group, rather than an ester, as the functional precursor to the carboxylic acid of illudinine. The small, linear nitrile (C≡N) is associated with improved selectivity, π-conjugation, and reactivity at multiple points in the synthetic sequence relative to the carboxylic acid ester. Preliminary assays indicate that illudinine and several related synthetic analogues are monoamine oxidase inhibitors, which is the first reported indication of biological activity associated with this natural product. Illudinine was found to inhibit monoamine oxidase B (MAO-B) with an IC50 of 18 ± 7.1 μM in preliminary assays.
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8
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Affiliation(s)
- Amir Tavakoli
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
| | - Gregory B. Dudley
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26505, United States
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9
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McCullough BS, Batsomboon P, Hutchinson KB, Dudley GB, Barrios AM. Synthesis and PTP Inhibitory Activity of Illudalic Acid and Its Methyl Ether, with Insights into Selectivity for LAR PTP over Other Tyrosine Phosphatases under Physiologically Relevant Conditions. JOURNAL OF NATURAL PRODUCTS 2019; 82:3386-3393. [PMID: 31809044 DOI: 10.1021/acs.jnatprod.9b00663] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The protein tyrosine phosphatase (PTP) family of enzymes includes many attractive therapeutic targets, such as those in the leukocyte common antigen-related (LAR) subfamily of receptor PTPs. Synthesis and PTP inhibitory activity of illudalic acid and its methyl ether are described, with a focus on selective inhibition of LAR PTP relative to a small collection of other representative PTPs. The synthesis comprises 16 steps and provides illudalic acid in up to 12% overall yield from neopentylene-fused benzoate 1 (20 steps from commercial materials). Illudalic acid dose-dependently (measured IC50 = 2.1 ± 0.2 μM) and time-dependently inhibits LAR consistent with previous reports of covalent binding. The kinetics of LAR inhibition by illudalic acid are consistent with a two-step mechanism in which the inhibitor and enzyme first interact noncovalently (KI = 130 ± 50 μM), followed by covalent ligation at a rate kinact = 1.3 ± 0.4 min-1. The kinact/KI ratio of 104 corresponds to a t∞1/2 of 0.5 min, as discussed herein. The phenol methyl ether of illudalic acid was found to be less potent in our dose-response assays (measured IC50 = 55 ± 6 μM) but more selective for LAR, with a weaker initial noncovalent interaction and faster covalent ligation of LAR as compared to illudalic acid itself. A truncated analogue of illudalic acid that lacks the neopentylene ring fusion was found to be devoid of significant activity under our assay conditions, in contrast to previous reports. These observations collectively help inform further development of illudalic acid analogues as potent and selective inhibitors of the LAR subfamily of tyrosine phosphatases.
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Affiliation(s)
- Brandon S McCullough
- Department of Medicinal Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - Paratchata Batsomboon
- C. Eugene Bennett Department of Chemistry , West Virginia University , Morgantown , West Virginia 26506 , United States
| | - Kacey B Hutchinson
- Department of Medicinal Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - Gregory B Dudley
- C. Eugene Bennett Department of Chemistry , West Virginia University , Morgantown , West Virginia 26506 , United States
| | - Amy M Barrios
- Department of Medicinal Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
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10
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Zhou L, Ma YC, Tang X, Li WY, Ma Y, Wang RL. Identification of the potential dual inhibitor of protein tyrosine phosphatase sigma and leukocyte common antigen-related phosphatase by virtual screen, molecular dynamic simulations and post-analysis. J Biomol Struct Dyn 2019; 39:45-62. [PMID: 31842717 DOI: 10.1080/07391102.2019.1705913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Owing to their inhibitory role in regulating oligodendrocyte differentiation and apoptosis, protein tyrosine phosphatase sigma (PTPσ) and leukocyte common antigen-related phosphatase (LAR) play a crucial potential role in treating spinal cord injury (SCI) disease. In this research, the computer aided drug design (CADD) methods were applied to discover the potential dual-target drug involving virtual screen, molecular docking and molecular dynamic simulation. Initially, the top 20 compounds with higher docking score than the positive controls (ZINC13749892, ZINC14516161) were virtually screened out from NCI and ZINC databases, and then were submitted in ADMET to predict their drug properties. Among these potential compounds, ZINC72417086 showed a higher docking score and satisfied Lipinski's rule of five. In addition, the post-analysis demonstrated that when ZINC72417086 bound to PTPσ and LAR, it could stable proteins conformations and destroy the residues interactions between P-loop and other loop regions in active pocket. Meanwhile, residue ARG1595 and ARG1528 could play a crucial role in in the inhibition of PTPσ and LAR, respectively. This research offered a novel approach for rapid discovery of dual-target leads compounds to treat SCI.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Liang Zhou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yang-Chun Ma
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Xue Tang
- Tasly Research Institute, Tasly Holding Group Co., Ltd, Tianjin, China
| | - Wei-Ya Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Ying Ma
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Run-Ling Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
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11
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Du S, Yang B, Wang X, Li WY, Lu XH, Zheng ZH, Ma Y, Wang RL. Identification of potential leukocyte antigen-related protein (PTP-LAR) inhibitors through 3D QSAR pharmacophore-based virtual screening and molecular dynamics simulation. J Biomol Struct Dyn 2019; 38:4232-4245. [PMID: 31588870 DOI: 10.1080/07391102.2019.1676825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Owing to its negative regulatory role in insulin signaling, protein tyrosine phosphatase of leukocyte antigen-related protein (PTP-LAR) was widely thought as a potential drug target for diabetes. Now, it was urgent to search for potential LAR inhibitors targeting diabetes. Initially, the pharmacophore models of LAR inhibitors were established with the application of the HypoGen module. The cost analysis, test set validation, as well as Fischer's test was used to verify the efficiency of pharmacophore model. Then, the best pharmacophore model (Hypo-1-LAR) was applied for the virtual screening of the ZINC database. And 30 compounds met the Lipinski's rule of five. Among them, 10 compounds with better binding affinity than the known LAR inhibitor (BDBM50296375) were discovered by docking studies. Finally, molecular dynamics simulations and post-analysis experiments (RMSD, RMSF, PCA, DCCM and RIN) were conducted to explore the effect of ligands (ZINC97018474 and Compound 1) on LAR and preliminary understand why ZINC97018474 had better inhibitory activity than Compound 1 (BDBM50296375). Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shan Du
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Bing Yang
- Department of Cell Biology, School of Basic Medical Science, Tianjin Medical University, Tianjin, China
| | - Xin Wang
- Tasly Pharmaceutical Group Co., Ltd, Tianjin, China
| | - Wei-Ya Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Xin-Hua Lu
- Key Laboratory for New Drug Screening Technology of Shijiazhuang City, New Drug Research & Development Center of North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering & Research Center, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei, China
| | - Zhi-Hui Zheng
- Key Laboratory for New Drug Screening Technology of Shijiazhuang City, New Drug Research & Development Center of North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering & Research Center, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei, China
| | - Ying Ma
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Run-Ling Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China
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12
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Uhl GR, Martinez MJ. PTPRD: neurobiology, genetics, and initial pharmacology of a pleiotropic contributor to brain phenotypes. Ann N Y Acad Sci 2019; 1451:112-129. [PMID: 30648269 PMCID: PMC6629525 DOI: 10.1111/nyas.14002] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/12/2018] [Accepted: 12/19/2018] [Indexed: 12/12/2022]
Abstract
Receptor-type protein tyrosine phosphatase, receptor type D (PTPRD) has likely roles as a neuronal cell adhesion molecule and synaptic specifier. Interest in its neurobiology and genomics has been stimulated by results from human genetics and mouse models for phenotypes related to addiction, restless leg syndrome, neurofibrillary pathology in Alzheimer's disease, cognitive impairment/intellectual disability, mood lability, and obsessive-compulsive disorder. We review PTPRD's discovery, gene family, candidate homomeric and heteromeric binding partners, phosphatase activities, brain distribution, human genetic associations with nervous system phenotypes, and mouse model data relevant to these phenotypes. We discuss the recently reported discovery of the first small molecule inhibitor of PTPRD phosphatase, the identification of its addiction-related effects, and the implications of these findings for the PTPRD-associated brain phenotypes. In assembling PTPRD neurobiology, human genetics, and mouse genetic and pharmacological datasets, we provide a compelling picture of the roles played by PTPRD, its variation, and its potential as a target for novel therapeutics.
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Affiliation(s)
- George R Uhl
- Neurology and Research Services, New Mexico VA Healthcare System, Albuquerque, New Mexico.,Departments of Neurology, Neuroscience, Molecular Genetics and Microbiology, University of New Mexico, Albuquerque, New Mexico.,Biomedical Research Institute of New Mexico, Albuquerque, New Mexico.,Departments of Neurology, Neuroscience and Mental Health, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Maria J Martinez
- Neurology and Research Services, New Mexico VA Healthcare System, Albuquerque, New Mexico.,Biomedical Research Institute of New Mexico, Albuquerque, New Mexico
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13
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Cocaine reward is reduced by decreased expression of receptor-type protein tyrosine phosphatase D (PTPRD) and by a novel PTPRD antagonist. Proc Natl Acad Sci U S A 2018; 115:11597-11602. [PMID: 30348770 DOI: 10.1073/pnas.1720446115] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Receptor-type protein tyrosine phosphatase D (PTPRD) is a neuronal cell-adhesion molecule/synaptic specifier that has been implicated in addiction vulnerability and stimulant reward by human genomewide association and mouse cocaine-conditioned place-preference data. However, there have been no reports of effects of reduced expression on cocaine self-administration. There have been no reports of PTPRD targeting by any small molecule. There are no data about behavioral effects of any PTPRD ligand. We now report (i) robust effects of heterozygous PTPRD KO on cocaine self-administration (These data substantially extend prior conditioned place-preference data and add to the rationale for PTPRD as a target for addiction therapeutics.); (ii) identification of 7-butoxy illudalic acid analog (7-BIA) as a small molecule that targets PTPRD and inhibits its phosphatase with some specificity; (iii) lack of toxicity when 7-BIA is administered to mice acutely or with repeated dosing; (iv) reduced cocaine-conditioned place preference when 7-BIA is administered before conditioning sessions; and (v) reductions in well-established cocaine self-administration when 7-BIA is administered before a session (in WT, not PTPRD heterozygous KOs). These results add to support for PTPRD as a target for medications to combat cocaine use disorders. 7-BIA provides a lead compound for addiction therapeutics.
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Liu J, Miotto RJ, Segard J, Erb AM, Aponick A. Catalytic Dehydrative Lactonization of Allylic Alcohols. Org Lett 2018; 20:3034-3038. [PMID: 29737174 DOI: 10.1021/acs.orglett.8b01063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A convenient strategy for the synthesis of phthalides and γ-butyrolactones is reported. The method utilizes readily prepared allylic alcohols in formal Au(I)- and Pd(II)-catalyzed SN2' reactions. Using these catalysts, exclusive formation of the desired five-membered lactones is observed, completely avoiding the competing direct lactonization pathway that forms the undesired seven-membered ring with protic acids and alternative metal salts. This mild and operationally simple method notably tolerates exomethylene groups and should find use in both phthalide and terpene syntheses.
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Affiliation(s)
- Ji Liu
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Romain J Miotto
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Julien Segard
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Ashley M Erb
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
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15
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Yang Y, Yu JX, Ouyang XH, Li JH. Complex Annulations through Silver Carbenoid Intermediate: An Alternative Entry to Transformations of 1,2,3-Triazoles. Org Lett 2017; 19:3982-3985. [DOI: 10.1021/acs.orglett.7b01682] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuan Yang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jiang-Xi Yu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Xuan-Hui Ouyang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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16
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Abstract
A total synthesis of the illudalane sesquiterpene illudinine was realized in eight steps and 14% overall yield from commercially available dimedone. The approach features tandem fragmentation/Knoevenagel-type condensation and microwave-assisted oxidative cycloisomerization to establish the isoquinoline core. Completion of the synthesis involves a recently reported cascade SNAr/Lossen rearrangement on a densely functionalized aryl bromide and an optimized procedure for O-methylation of 8-hydroxyisoquinolines. The oxidative cycloisomerization proceeds by way of a novel inverse-demand intramolecular dehydro-Diels-Alder cycloaddition, which has a potentially broader appeal for preparing substituted isoquinolines.
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Affiliation(s)
- Alec E Morrison
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Tung T Hoang
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Mélodie Birepinte
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Gregory B Dudley
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States.,C. Eugene Bennett Department of Chemistry, West Virginia University , Morgantown, West Virginia 26506, United States
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17
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Ramsubhag RR, Massaro CL, Dadich CM, Janeczek AJ, Hoang TT, Mazzio EA, Eyunni S, Soliman KFA, Dudley GB. Synthesis of "neoprofen", a rigidified analogue of ibuprofen, exemplifying synthetic methodology for altering the 3-D topology of pharmaceutical substances. Org Biomol Chem 2016; 14:7855-8. [PMID: 27492587 PMCID: PMC5008855 DOI: 10.1039/c6ob01351a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3,3-Dimethylcyclopentanes (neopentylenes) are ubiquitous in Nature but largely absent from synthetic pharmaceutical libraries. Neopentylenes define a hydrophobic and rigid 3-D topology with distinct molecular pharmacology, as exemplified here with two neopentylene-fused analogues of the synthetic anti-inflammatory drug, ibuprofen.
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Affiliation(s)
- Ron R Ramsubhag
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Chelsea L Massaro
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Christina M Dadich
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Andrew J Janeczek
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Tung T Hoang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Elizabeth A Mazzio
- College of Pharmacy and Pharmaceutical Sciences, Florida Agricultural and Mechanical University, Tallahassee, Florida 32307, USA
| | - Suresh Eyunni
- College of Pharmacy and Pharmaceutical Sciences, Florida Agricultural and Mechanical University, Tallahassee, Florida 32307, USA
| | - Karam F A Soliman
- College of Pharmacy and Pharmaceutical Sciences, Florida Agricultural and Mechanical University, Tallahassee, Florida 32307, USA
| | - Gregory B Dudley
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA. and C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, USA
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19
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Akbaba Y, Bastem E, Topal F, Gülçin İ, Maraş A, Göksu S. Synthesis and Carbonic Anhydrase Inhibitory Effects of Novel Sulfamides Derived from 1-Aminoindanes and Anilines. Arch Pharm (Weinheim) 2014; 347:950-7. [DOI: 10.1002/ardp.201400257] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/06/2014] [Accepted: 08/15/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Yusuf Akbaba
- Department of Basic Sciences; Faculty of Science; Erzurum Technical University; Erzurum Turkey
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
| | - Enes Bastem
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
| | - Fevzi Topal
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
- Department of Medical Services and Techniques; Vocational School of Health Services; Gumushane University; Gumushane Turkey
| | - İlhami Gülçin
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
- Department of Zoology; College of Science; King Saud University; Riyadh Saudi Arabia
| | - Ahmet Maraş
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
| | - Süleyman Göksu
- Department of Chemistry; Faculty of Science; Ataturk University; Erzurum Turkey
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20
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Patel GM, Deota PT. One-pot synthesis of 3,4-dihydro-3-hydroxyisochroman-1-one and evaluation of acetal derivatives as antibacterial and antifungal agents. HETEROCYCL COMMUN 2014. [DOI: 10.1515/hc-2014-0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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21
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Park H, Pham NC, Chun HJ, Ryu SE. Identification of Potent Leukocyte Common Antigen-Related Phosphatase Inhibitors via Structure-Based Virtual Screening. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.7.2006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Identification of novel, less toxic PTP-LAR inhibitors using in silico strategies: pharmacophore modeling, SADMET-based virtual screening and docking. J Mol Model 2011; 18:187-201. [PMID: 21523550 DOI: 10.1007/s00894-011-1037-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 03/10/2011] [Indexed: 12/31/2022]
Abstract
Human leukocyte antigen-related (PTP-LAR) is a receptor-like transmembrane phosphatase and a potential target for diabetes, obesity and cancer. In the present study, a sequence of in silico strategies (pharmacophore mapping, a 3D database searching, SADMET screening, and docking and toxicity studies) was performed to identify eight novel nontoxic PTP-LAR inhibitors. Twenty different pharmacophore hypotheses were generated using two methods; the best (hypothesis 2) consisted of three hydrogen-bond acceptor (A), one ring aromatic (R), and one hydrophobic aliphatic (Z) features. This hypothesis was used to screen molecules from several databases, such as Specs, IBS, MiniMaybridge, NCI, and an in-house PTP inhibitor database. In order to overcome the general bioavailability problem associated with phosphatases, the hits obtained were filtered by Lipinski's rule of five and SADMET properties and validated by molecular docking studies using the available crystal structure 1LAR. These docking studies suggested the ligand binding pattern and interactions required for LAR inhibition. The docking analysis also revealed that sulfonylurea derivatives with an isoquinoline or naphthalene scaffold represent potential LAR drugs. The screening protocol was further validated using ligand pharmacophore mapping studies, which showed that the abovementioned interactions are indeed crucial and that the screened molecules can be presumed to possess potent inhibitory activities.
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