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Weber P, Mészáros Z, Bojarová P, Ebner M, Fischer R, Křen V, Kulik N, Müller P, Vlachová M, Slámová K, Stütz AE, Thonhofer M, Torvisco A, Wrodnigg TM, Wolfsgruber A. Highly functionalized diaminocyclopentanes: A new route to potent and selective inhibitors of human O-GlcNAcase. Bioorg Chem 2023; 140:106819. [PMID: 37666109 DOI: 10.1016/j.bioorg.2023.106819] [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: 05/15/2023] [Revised: 08/11/2023] [Accepted: 08/27/2023] [Indexed: 09/06/2023]
Abstract
A new class of compounds inhibiting de-O-glycosylation of proteins has been identified. Highly substituted diaminocyclopentanes are impressively selective reversible non-transition state O-β-N-acetyl-d-glucosaminidase (O-GlcNAcase) inhibitors. The ease of preparative access and remarkable biological activities provide highly viable leads for the development of anti-tau-phosphorylation agents with a view to eventually ameliorating Alzheimer's disease.
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Affiliation(s)
- Patrick Weber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Zuzana Mészáros
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Manuel Ebner
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Roland Fischer
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Natalia Kulik
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Philipp Müller
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Miluše Vlachová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Kristýna Slámová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ 14200, Prague 4, Czech Republic
| | - Arnold E Stütz
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Martin Thonhofer
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Ana Torvisco
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Tanja M Wrodnigg
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Andreas Wolfsgruber
- Glycogroup, Institute of Chemistry and Technology of Biobased Systems, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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2
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Thanvi R, Jayasinghe TD, Kapil S, Obadawo BS, Ronning DR, Sucheck SJ. Synthesis of C7/C8-cyclitols and C7N-aminocyclitols from maltose and X-ray crystal structure of Streptomyces coelicolor GlgEI V279S in a complex with an amylostatin GXG–like derivative. Front Chem 2022; 10:950433. [PMID: 36157042 PMCID: PMC9501709 DOI: 10.3389/fchem.2022.950433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/26/2022] [Indexed: 11/30/2022] Open
Abstract
C7/C8-cyclitols and C7N-aminocyclitols find applications in the pharmaceutical sector as α-glucosidase inhibitors and in the agricultural sector as fungicides and insecticides. In this study, we identified C7/C8-cyclitols and C7N-aminocyclitols as potential inhibitors of Streptomyces coelicolor (Sco) GlgEI-V279S based on the docking scores. The protein and the ligand (targets 11, 12, and 13) were prepared, the states were generated at pH 7.0 ± 2.0, and the ligands were docked into the active sites of the receptor via Glide™. The synthetic route to these targets was similar to our previously reported route used to obtain 4-⍺-glucoside of valienamine (AGV), except the protecting group for target 12 was a p-bromobenzyl (PBB) ether to preserve the alkene upon deprotection. While compounds 11–13 did not inhibit Sco GlgEI-V279S at the concentrations evaluated, an X-ray crystal structure of the Sco GlgE1-V279S/13 complex was solved to a resolution of 2.73 Å. This structure allowed assessment differences and commonality with our previously reported inhibitors and was useful for identifying enzyme–compound interactions that may be important for future inhibitor development. The Asp 394 nucleophile formed a bidentate hydrogen bond interaction with the exocyclic oxygen atoms (C(3)-OH and C(7)-OH) similar to the observed interactions with the Sco GlgEI-V279S in a complex with AGV (PDB:7MGY). In addition, the data suggest replacing the cyclohexyl group with more isosteric and hydrogen bond–donating groups to increase binding interactions in the + 1 binding site.
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Affiliation(s)
- Radhika Thanvi
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
| | - Thilina D. Jayasinghe
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sunayana Kapil
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
| | | | - Donald R. Ronning
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Donald R. Ronning, ; Steven J. Sucheck,
| | - Steven J. Sucheck
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
- *Correspondence: Donald R. Ronning, ; Steven J. Sucheck,
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3
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Sieber S, Hsiao CC, Emmanouilidou D, Debowski AW, Stubbs KA, Gademann K. Syntheses and biological investigations of kirkamide and oseltamivir hybrid derivatives. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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4
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Tong J, Xia T, Wang B. Total Synthesis of (±)-11- O-Debenzoyltashironin via Palladium-Catalyzed 5- endo Ene-yne Cyclization Enabled trans-5-6 Ring Fusion. Org Lett 2020; 22:2730-2734. [PMID: 32189505 DOI: 10.1021/acs.orglett.0c00689] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Illicium sesquiterpenes are a synthetically fascinating family of polycyclic natural products owing to their diversified pharmacological activities and structural complexity. Our cumulative efforts on developing a universal reductive coupling strategy toward stereoselective assembly of illicium sesquiterpenes recently resulted in a total synthesis of 11-O-debenzoyltashironin, a rare illicium sesquiterpene with a unique allo-cedrane carbon skeleton exhibiting prominent neurotropic activity, with complete stereochemical control. Our key tactics involved an unprecedented Pd(II)-catalyzed 5-endo ene-yne cyclization that directly allowed strained trans-5-6 ring fusion and a late-stage transannular McMurry coupling that furnished the compacted tetracyclic carbon skeleton rapidly.
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Affiliation(s)
- Jie Tong
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tianrun Xia
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Bo Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
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5
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Zhang X, Dickinson DM, Lin L, Suflita M, Baytas S, Linhardt RJ. Chemoenzymatic synthesis of heparan sulfate tetrasaccharide from a N-acetyl-α-d-glucosamine-O-methylglycoside acceptor. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.02.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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6
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Potent GH20 N-Acetyl-β-d-hexosaminidase Inhibitors: N-Substituted 3-acetamido-4-amino-5-hydroxymethyl-cyclopentanediols. Molecules 2018; 23:molecules23030708. [PMID: 29558439 PMCID: PMC6017319 DOI: 10.3390/molecules23030708] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 01/23/2023] Open
Abstract
From 1,2;3,4-di-O-isopropylidene-d-galactopyranose, a preliminary series of highly functionalized amino(hydroxymethyl)cyclopentanes was easily available. These amine-containing basic carbasugars featuring the d-galacto configuration are potent inhibitors of the GH20 β-d-hexosaminidases probed and may bear potential as regulators of N-acetyl-d-hexosaminidase activities in vivo.
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7
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Chen W, Shen S, Dong L, Zhang J, Yang Q. Selective inhibition of β-N-acetylhexosaminidases by thioglycosyl–naphthalimide hybrid molecules. Bioorg Med Chem 2018; 26:394-400. [DOI: 10.1016/j.bmc.2017.11.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/18/2017] [Accepted: 11/28/2017] [Indexed: 01/11/2023]
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8
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Abstract
The first synthesis of carbasugars, compounds in which the ring oxygen of a monosaccharide had been replaced by a methylene moiety, was described in 1966 by Professor G. E. McCasland’s group. Seven years later, the first true natural carbasugar (5a-carba-R-D-galactopyranose) was isolated from a fermentation broth of Streptomyces sp. MA-4145. In the following decades, the chemistry and biology of carbasugars have been extensively studied. Most of these compounds show interesting biological properties, especially enzymatic inhibitory activities, and, in consequence, an important number of analogues have also been prepared in the search for improved biological activities. The aim of this review is to give coverage on the progress made in two important aspects of these compounds: the elucidation of their biosynthesis and the consideration of their biological properties, including the extensively studied carbapyranoses as well as the much less studied carbafuranoses.
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9
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Sieber S, Carlier A, Neuburger M, Grabenweger G, Eberl L, Gademann K. Isolation and Total Synthesis of Kirkamide, an Aminocyclitol from an Obligate Leaf Nodule Symbiont. Angew Chem Int Ed Engl 2015; 54:7968-70. [DOI: 10.1002/anie.201502696] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Indexed: 01/08/2023]
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10
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Sieber S, Carlier A, Neuburger M, Grabenweger G, Eberl L, Gademann K. Isolation and Total Synthesis of Kirkamide, an Aminocyclitol from an Obligate Leaf Nodule Symbiont. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502696] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Toti KS, Derudas M, Pertusati F, Sinnaeve D, Van den Broeck F, Margamuljana L, Martins JC, Herdewijn P, Balzarini J, McGuigan C, Van Calenbergh S. Synthesis of an apionucleoside family and discovery of a prodrug with anti-HIV activity. J Org Chem 2014; 79:5097-112. [PMID: 24804575 DOI: 10.1021/jo500659e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report the synthesis of a family of D- and L-furano-D-apionucleosides, their 3'-deoxy, as well as their 2',3'-dideoxy analogues with thymine and adenine nucleobases. Single carbon homologation of 1,2-O-isopropylidene-D-glycero-tetrafuranos-3-ulose (15) and optimized glycosylation conditions involving microwave irradiation were key to the successful synthesis of the target compounds. While all target nucleosides failed to show significant antiviral activity, we demonstrated that the triphosphate of 2',3'-deoxy-D-apio-D-furanoadenosine (1), in contrast to that of its D-apio-L-furanose epimer 2, was readily incorporated into a DNA template by HIV reverse transcriptase to act as a DNA chain terminator. This led us to convert adenine derivative 1 into two phosphoramidate prodrugs. ProTide 9b was found active against HIV-1 and HIV-2 (EC50 = 0.5-1.5 μM), indicating that the lack of activity of the parent nucleoside, and possibly also other members of the D-apio-D-furanose nucleoside family must be sought in the inefficient cellular conversion to the monophosphate.
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Affiliation(s)
- Kiran S Toti
- Laboratory for Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Ghent University , Harelbekestraat 72, B-9000 Ghent, Belgium
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12
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Shiota H, Kanzaki H, Hatanaka T, Nitoda T. TMG-chitotriomycin as a probe for the prediction of substrate specificity of β-N-acetylhexosaminidases. Carbohydr Res 2013; 375:29-34. [PMID: 23685037 DOI: 10.1016/j.carres.2013.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 04/05/2013] [Accepted: 04/14/2013] [Indexed: 11/25/2022]
Abstract
TMG-chitotriomycin (1) produced by the actinomycete Streptomyces annulatus NBRC13369 was examined as a probe for the prediction of substrate specificity of β-N-acetylhexosaminidases (HexNAcases). According to the results of inhibition assays, 14 GH20 HexNAcases from various organisms were divided into 1-sensitive and 1-insensitive enzymes. Three representatives of each group were investigated for their substrate specificity. The 1-sensitive HexNAcases hydrolyzed N-acetylchitooligosaccharides but not N-glycan-type oligosaccharides, whereas the 1-insensitive enzymes hydrolyzed N-glycan-type oligosaccharides but not N-acetylchitooligosaccharides, indicating that TMG-chitotriomycin can be used as a molecular probe to distinguish between chitin-degrading HexNAcases and glycoconjugate-processing HexNAcases.
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Affiliation(s)
- Hiroto Shiota
- Laboratory of Bioresources Chemistry, The Graduate School of Environmental & Life Science, Okayama University, Kita-ku, Okayama, Japan
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13
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Abstract
Many Gram-negative and Gram-positive bacteria recycle a significant proportion of the peptidoglycan components of their cell walls during their growth and septation. In many--and quite possibly all--bacteria, the peptidoglycan fragments are recovered and recycled. Although cell-wall recycling is beneficial for the recovery of resources, it also serves as a mechanism to detect cell-wall-targeting antibiotics and to regulate resistance mechanisms. In several Gram-negative pathogens, anhydro-MurNAc-peptide cell-wall fragments regulate AmpC β-lactamase induction. In some Gram-positive organisms, short peptides derived from the cell wall regulate the induction of both β-lactamase and β-lactam-resistant penicillin-binding proteins. The involvement of peptidoglycan recycling with resistance regulation suggests that inhibitors of the enzymes involved in the recycling might synergize with cell-wall-targeted antibiotics. Indeed, such inhibitors improve the potency of β-lactams in vitro against inducible AmpC β-lactamase-producing bacteria. We describe the key steps of cell-wall remodeling and recycling, the regulation of resistance mechanisms by cell-wall recycling, and recent advances toward the discovery of cell-wall-recycling inhibitors.
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Affiliation(s)
- Jarrod W Johnson
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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14
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Ekmekci Z, Balci M. Synthesis of a New 2,3-Diaminoconduritol with Conduritol F Structure. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200582] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Zachara NE. The roles of O-linked β-N-acetylglucosamine in cardiovascular physiology and disease. Am J Physiol Heart Circ Physiol 2012; 302:H1905-18. [PMID: 22287582 DOI: 10.1152/ajpheart.00445.2011] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
More than 1,000 proteins of the nucleus, cytoplasm, and mitochondria are dynamically modified by O-linked β-N-acetylglucosamine (O-GlcNAc), an essential post-translational modification of metazoans. O-GlcNAc, which modifies Ser/Thr residues, is thought to regulate protein function in a manner analogous to protein phosphorylation and, on a subset of proteins, appears to have a reciprocal relationship with phosphorylation. Like phosphorylation, O-GlcNAc levels change dynamically in response to numerous signals including hyperglycemia and cellular injury. Recent data suggests that O-GlcNAc appears to be a key regulator of the cellular stress response, the augmentation of which is protective in models of acute vascular injury, trauma hemorrhage, and ischemia-reperfusion injury. In contrast to these studies, O-GlcNAc has also been implicated in the development of hypertension and type II diabetes, leading to vascular and cardiac dysfunction. Here we summarize the current understanding of the roles of O-GlcNAc in the heart and vasculature.
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Affiliation(s)
- Natasha E Zachara
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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16
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Transformation of quercitols into 4-methylenecyclohex-5-ene-1,2,3-triol derivatives, precursors for the chemical chaperones N-octyl-4-epi-β-valienamine (NOEV) and N-octyl-β-valienamine (NOV). Bioorg Med Chem Lett 2011; 21:7189-92. [DOI: 10.1016/j.bmcl.2011.09.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 09/16/2011] [Accepted: 09/17/2011] [Indexed: 11/21/2022]
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17
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Zachara NE, Vosseller K, Hart GW. Detection and analysis of proteins modified by O-linked N-acetylglucosamine. CURRENT PROTOCOLS IN PROTEIN SCIENCE 2011; Chapter 12:12.8.1-12.8.33. [PMID: 22045558 PMCID: PMC3349994 DOI: 10.1002/0471140864.ps1208s66] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
O-GlcNAc is a common post-translational modification of nuclear, mitochondrial, and cytoplasmic proteins that is implicated in the etiology of type II diabetes and Alzheimer's disease, as well as cardioprotection. This unit covers simple and comprehensive techniques for identifying proteins modified by O-GlcNAc, studying the enzymes that add and remove O-GlcNAc, and mapping O-GlcNAc modification sites.
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Affiliation(s)
- Natasha E. Zachara
- The Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Keith Vosseller
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Gerald W. Hart
- The Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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18
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Zachara NE, Vosseller K, Hart GW. Detection and analysis of proteins modified by O-linked N-acetylglucosamine. CURRENT PROTOCOLS IN MOLECULAR BIOLOGY 2011; Chapter 17:Unit 17.6. [PMID: 21732316 PMCID: PMC3329785 DOI: 10.1002/0471142727.mb1706s95] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
O-GlcNAc is a common post-translational modification of nuclear, mitochondrial, and cytoplasmic proteins that is implicated in the etiology of type II diabetes and Alzheimer's disease, as well as cardioprotection. This unit covers simple and comprehensive techniques for identifying proteins modified by O-GlcNAc, studying the enzymes that add and remove O-GlcNAc, and mapping O-GlcNAc modification sites.
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Affiliation(s)
- Natasha E. Zachara
- The Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Keith Vosseller
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Gerald W. Hart
- The Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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19
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Stütz AE, Wrodnigg TM. Imino sugars and glycosyl hydrolases: historical context, current aspects, emerging trends. Adv Carbohydr Chem Biochem 2011; 66:187-298. [PMID: 22123190 DOI: 10.1016/b978-0-12-385518-3.00004-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Forty years of discoveries and research on imino sugars, which are carbohydrate analogues having a basic nitrogen atom instead of oxygen in the sugar ring and, acting as potent glycosidase inhibitors, have made considerable impact on our contemporary understanding of glycosidases. Imino sugars have helped to elucidate the catalytic machinery of glycosidases and have refined our methods and concepts of utilizing them. A number of new aspects have emerged for employing imino sugars as pharmaceutical compounds, based on their profound effects on metabolic activities in which glycosidases are involved. From the digestion of starch to the fight against viral infections, from research into malignant diseases to potential improvements in hereditary storage disorders, glycosidase action and inhibition are essential issues. This account aims at combining general developments with a focus on some niches where imino sugars have become useful tools for glycochemistry and glycobiology.
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Affiliation(s)
- Arnold E Stütz
- Institut für Organische Chemie, Technische Universität Graz, Austria
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20
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Slámová K, Bojarová P, Petrásková L, Křen V. β-N-Acetylhexosaminidase: What's in a name…? Biotechnol Adv 2010; 28:682-93. [DOI: 10.1016/j.biotechadv.2010.04.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 04/17/2010] [Accepted: 04/24/2010] [Indexed: 01/28/2023]
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21
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Goddard-Borger ED, Stubbs KA. An improved route to PUGNAc and its galacto-configured congener. J Org Chem 2010; 75:3931-4. [PMID: 20443616 DOI: 10.1021/jo100614b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient, scalable, and reliable synthesis of PUGNAc and its galacto-configured congener is reported.
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Affiliation(s)
- Ethan D Goddard-Borger
- Chemistry M313, School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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22
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He Y, Bubb AK, Stubbs KA, Gloster TM, Davies GJ. Inhibition of a bacterial O-GlcNAcase homologue by lactone and lactam derivatives: structural, kinetic and thermodynamic analyses. Amino Acids 2010; 40:829-39. [PMID: 20689974 DOI: 10.1007/s00726-010-0700-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 07/13/2010] [Indexed: 11/26/2022]
Abstract
The dynamic, intracellular, O-GlcNAc modification is of continuing interest and one whose study through targeted "chemical genetics" approaches is set to increase. Of particular importance is the inhibition of the O-GlcNAc hydrolase, O-GlcNAcase (OGA), since this provides a route to elevate cellular O-GlcNAc levels, and subsequent phenotypic evaluation. Such a small molecule approach complements other methods and potentially avoids changes in protein-protein interactions that manifest themselves in molecular biological approaches to O-GlcNAc transferase knockout or over-expression. Here we describe the kinetic, thermodynamic and three-dimensional structural analysis of a bacterial OGA analogue from Bacteroides thetaiotaomicron, BtGH84, in complex with a lactone oxime (LOGNAc) and a lactam form of N-acetylglucosamine and compare their binding signatures with that of the more potent inhibitor O-(2-acetamido-2-deoxy-D-glucopyranosylidene)amino N-phenyl carbamate (PUGNAc). We show that both LOGNAc and the N-acetyl gluconolactam are significantly poorer inhibitors than PUGNAc, which may reflect poorer mimicry of transition state geometry and steric clashes with the enzyme upon binding; drawbacks that the phenyl carbamate adornment of PUGNAc helps mitigate. Implications for the design of future generations of inhibitors are discussed.
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Affiliation(s)
- Yuan He
- York Structural Biology Laboratory, Department of Chemistry, The University of York, York, UK
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23
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Macauley MS, Vocadlo DJ. Increasing O-GlcNAc levels: An overview of small-molecule inhibitors of O-GlcNAcase. Biochim Biophys Acta Gen Subj 2009; 1800:107-21. [PMID: 19664691 DOI: 10.1016/j.bbagen.2009.07.028] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 07/17/2009] [Accepted: 07/28/2009] [Indexed: 11/25/2022]
Abstract
The O-GlcNAc modification is found on many nucleocytoplasmic proteins. The dynamic nature of O-GlcNAc, which in some ways is reminiscent of phosphorylation, has enabled investigators to modulate the stoichiometry of O-GlcNAc on proteins in order to study its function. Although several genetic and pharmacological methods for manipulating O-GlcNAc levels have been described, one of the most direct approaches of increasing global O-GlcNAc levels is by using small-molecule inhibitors of O-GlcNAcase (OGA). As the interest in increasing O-GlcNAc levels has grown, so too has the number of OGA inhibitors. This review provides an overview of the available methods of increasing O-GlcNAc levels, with a special emphasis on inhibition of OGA by small molecules. Known inhibitors of OGA are discussed with particular attention on those most suitable for cell-based biological studies. Several examples in which OGA inhibitors have been used to study the functional role of the O-GlcNAc modification in biological systems are discussed, highlighting the pros and cons of different inhibitors.
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Affiliation(s)
- Matthew S Macauley
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada
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Martinez-Fleites C, He Y, Davies GJ. Structural analyses of enzymes involved in the O-GlcNAc modification. Biochim Biophys Acta Gen Subj 2009; 1800:122-33. [PMID: 19647042 DOI: 10.1016/j.bbagen.2009.07.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2009] [Revised: 07/13/2009] [Accepted: 07/18/2009] [Indexed: 12/22/2022]
Abstract
In order to study the O-GlcNAc modification in vivo, it is evident that a range of specific small molecule inhibitors would be a valuable asset. One strategy for the design of such compounds would be to utilise 3-D structural information in tandem with knowledge of catalytic mechanism. The last few years has seen major breakthroughs in our understanding of the 3-D structure of the enzymes involved in the O-GlcNAc modification notably from the study of the tetratricopeptide repeat (TPR) domain of the human O-GlcNAc transferase, of the bacterial homologs of the O-GlcNAc hydrolase and more latterly bacterial homologs of the O-GlcNAc transferase itself. Of particular note are the bacterial O-GlcNAc hydrolase homologs that provide near identical active centres to the human enzyme. These have informed the design and/or subsequent analysis of inhibitors of this enzyme which have found great use in the chemical dissection of the O-GlcNAc in vivo, as described by Macauley and Vocadlo elsewhere in this issue.
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Affiliation(s)
- Carlos Martinez-Fleites
- York Structural Biology Laboratory, Department of Chemistry, The University of York, Heslington, York, YO10 5YW, UK
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Ramstadius C, Hekmat O, Eriksson L, Stålbrand H, Cumpstey I. β-Mannosidase and β-hexosaminidase inhibitors: synthesis of 1,2-bis-epi-valienamine and 1-epi-2-acetamido-2-deoxy-valienamine from d-mannose. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.02.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Davies GJ, Withers SG, Vocadlo DJ. The Chitopentaose Complex of a Mutant Hen Egg-White Lysozyme Displays No Distortion of the –1 Sugar Away from a 4C1 Chair Conformation. Aust J Chem 2009. [DOI: 10.1071/ch09038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Glycosidase inhibitors frequently reflect either the charge or the ‘flattened’ shape of the oxocarbenium-ion like transition state. Much of the impetus for such inhibitory strategies derives from historical studies on ligand binding to hen egg white lysozyme (HEWL); not least those suggesting that product complexes of the enzyme showed distortion of the pyranosides in the –1 subsite. Ironically, while distortion is undoubtedly a defining feature of glycosidases, product complexes themselves are rarely distorted. Here we show that the chitopentaose product complex of a mutant E35Q HEWL, solved at 1.8 Å resolution, is bound with all sugars in 4C1 conformation.
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Scaffidi A, Stubbs KA, Vocadlo DJ, Stick RV. The synthesis and biological evaluation of some carbocyclic analogues of PUGNAc. Carbohydr Res 2008; 343:2744-53. [DOI: 10.1016/j.carres.2008.08.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 08/04/2008] [Accepted: 08/09/2008] [Indexed: 10/21/2022]
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Kuntz DA, Tarling CA, Withers SG, Rose DR. Structural Analysis of Golgi α-Mannosidase II Inhibitors Identified from a Focused Glycosidase Inhibitor Screen. Biochemistry 2008; 47:10058-68. [DOI: 10.1021/bi8010785] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Douglas A. Kuntz
- Ontario Cancer Institute and Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada, and Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Chris A. Tarling
- Ontario Cancer Institute and Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada, and Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Stephen G. Withers
- Ontario Cancer Institute and Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada, and Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - David R. Rose
- Ontario Cancer Institute and Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada, and Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
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Affiliation(s)
- Antonio Delgado
- Research Unit on BioActive Molecules (RUBAM), Departament de Química Orgànica Biològica, Institut d'Investigacions Químiques i Ambientals de Barcelona (IIQAB–C.S.I.C), Jordi Girona 18–26, 08034 Barcelona, Spain
- Universitat de Barcelona, Facultat de Farmàcia, Unitat de Química Farmacèutica (Unitat Associada al CSIC), Avgda. Juan XXIII, s/n, 08028 Barcelona, Spain
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A potent mechanism-inspired O-GlcNAcase inhibitor that blocks phosphorylation of tau in vivo. Nat Chem Biol 2008; 4:483-90. [DOI: 10.1038/nchembio.96] [Citation(s) in RCA: 492] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Accepted: 05/19/2008] [Indexed: 11/08/2022]
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