1
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Gauthier C, El Cheikh K, Basile I, Daurat M, Morère E, Garcia M, Maynadier M, Morère A, Gary-Bobo M. Cation-independent mannose 6-phosphate receptor: From roles and functions to targeted therapies. J Control Release 2024; 365:759-772. [PMID: 38086445 DOI: 10.1016/j.jconrel.2023.12.014] [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: 08/26/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
The cation-independent mannose 6-phosphate receptor (CI-M6PR) is a ubiquitous transmembrane receptor whose main intracellular role is to direct enzymes carrying mannose 6-phosphate moieties to lysosomal compartments. Recently, the small membrane-bound portion of this receptor has appeared to be implicated in numerous pathophysiological processes. This review presents an overview of the main ligand partners and the roles of CI-M6PR in lysosomal storage diseases, neurology, immunology and cancer fields. Moreover, this membrane receptor has already been noted for its strong potential in therapeutic applications thanks to its cellular internalization activity and its ability to address pathogenic factors to lysosomes for degradation. A number of therapeutic delivery approaches using CI-M6PR, in particular with enzymes, antibodies or nanoparticles, are currently being proposed.
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Affiliation(s)
- Corentin Gauthier
- NanoMedSyn, Montpellier, France; IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | | | | | - Elodie Morère
- NanoMedSyn, Montpellier, France; IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | | | - Alain Morère
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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2
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Khalaf JK, Bess LS, Walsh LM, Ward JM, Johnson CL, Livesay MT, Jackson KJ, Evans JT, Ryter KT, Bazin-Lee HG. Diamino Allose Phosphates: Novel, Potent, and Highly Stable Toll-like Receptor 4 Agonists. J Med Chem 2023; 66:13900-13917. [PMID: 37847244 DOI: 10.1021/acs.jmedchem.3c00724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Most known synthetic toll-like receptor 4 (TLR4) agonists are carbohydrate-based lipid-A mimetics containing several fatty acyl chains, including a labile 3-O-acyl chain linked to the C-3 position of the non-reducing sugar known to undergo cleavage impacting stability and resulting in loss of activity. To overcome this inherent instability, we rationally designed a new class of chemically more stable synthetic TLR4 ligands that elicit robust innate and adaptive immune responses. This new class utilized a diamino allose phosphate (DAP) scaffold containing a nonhydrolyzable 3-amide bond instead of the classical 3-ester. Accordingly, the DAPs have significantly improved thermostability in aqueous formulations and potency relative to other known natural and synthetic TLR4 ligands. Furthermore, the DAP analogues function as potent vaccine adjuvants to enhance influenza-specific antibodies in mice and provide protection against lethal influenza virus challenges. This novel set of TLR4 ligands show promise as next-generation vaccine adjuvants and stand-alone immunomodulators.
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Affiliation(s)
- Juhienah K Khalaf
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Laura S Bess
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Lois M Walsh
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Janine M Ward
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Craig L Johnson
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Mark T Livesay
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Konner J Jackson
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Jay T Evans
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Kendal T Ryter
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
| | - Hélène G Bazin-Lee
- Inimmune Corporation, 1121 E Broadway, Suite 121, Missoula, Montana 59802, United States
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3
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Reintjens NRM, Tondini E, Vis C, McGlinn T, Meeuwenoord NJ, Hogervorst TP, Overkleeft HS, Filippov DV, van der Marel GA, Ossendorp F, Codée JDC. Multivalent, Stabilized Mannose-6-Phosphates for the Targeted Delivery of Toll-Like Receptor Ligands and Peptide Antigens. Chembiochem 2021; 22:434-440. [PMID: 32864819 PMCID: PMC7894537 DOI: 10.1002/cbic.202000538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/29/2020] [Indexed: 02/03/2023]
Abstract
Mannose-6-phosphate (M6P) is recognized by the mannose-6-phosphate receptor and plays an important role in the transport of cargo to the endosomes, making it an attractive tool to improve endosomal trafficking of vaccines. We describe herein the assembly of peptide antigen conjugates carrying clusters of mannose-6-C-phosphonates (M6Po). The M6Po's are stable M6P mimics that are resistant to cleavage of the phosphate group by endogenous phosphatases. Two different strategies for the incorporation of the M6Po clusters in the conjugate have been developed: the first relies on a "post-assembly" click approach employing an M6Po bearing an alkyne functionality; the second hinges on an M6Po C-glycoside amino acid building block that can be used in solid-phase peptide synthesis. The generated conjugates were further equipped with a TLR7 ligand to stimulate dendritic cell (DC) maturation. While antigen presentation is hindered by the presence of the M6Po clusters, the incorporation of the M6Po clusters leads to increased activation of DCs, thus demonstrating their potential in improving vaccine adjuvanticity by intraendosomally active TLR ligands.
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Affiliation(s)
- Niels R. M. Reintjens
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Elena Tondini
- Department of ImmunologyLeiden University Medical CenterLeiden UniversityAlbinusdreef 22333 ZALeidenNetherlands
| | - Christopher Vis
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Toroa McGlinn
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Tim P. Hogervorst
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Herman S. Overkleeft
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Dmitri V. Filippov
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | | | - Ferry Ossendorp
- Department of ImmunologyLeiden University Medical CenterLeiden UniversityAlbinusdreef 22333 ZALeidenNetherlands
| | - Jeroen D. C. Codée
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
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4
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Bochel AJ, Williams C, McCoy AJ, Hoppe HJ, Winter AJ, Nicholls RD, Harlos K, Jones EY, Berger I, Hassan AB, Crump MP. Structure of the Human Cation-Independent Mannose 6-Phosphate/IGF2 Receptor Domains 7-11 Uncovers the Mannose 6-Phosphate Binding Site of Domain 9. Structure 2020; 28:1300-1312.e5. [PMID: 32877646 DOI: 10.1016/j.str.2020.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/13/2020] [Accepted: 08/07/2020] [Indexed: 11/29/2022]
Abstract
The cation-independent mannose 6-phosphate (M6P)/Insulin-like growth factor-2 receptor (CI-MPR/IGF2R) is an ∼300 kDa transmembrane protein responsible for trafficking M6P-tagged lysosomal hydrolases and internalizing IGF2. The extracellular region of the CI-MPR has 15 homologous domains, including M6P-binding domains (D) 3, 5, 9, and 15 and IGF2-binding domain 11. We have focused on solving the first structures of human D7-10 within two multi-domain constructs, D9-10 and D7-11, and provide the first high-resolution description of the high-affinity M6P-binding D9. Moreover, D9 stabilizes a well-defined hub formed by D7-11 whereby two penta-domains intertwine to form a dimeric helical-type coil via an N-glycan bridge on D9. Remarkably the D7-11 structure matches an IGF2-bound state of the receptor, suggesting this may be an intrinsically stable conformation at neutral pH. Interdomain clusters of histidine and proline residues may impart receptor rigidity and play a role in structural transitions at low pH.
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Affiliation(s)
- Alice J Bochel
- School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK
| | - Christopher Williams
- School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK; BrisSynBio, Life Sciences Building, Tyndall Avenue, Bristol BS8 1TQ, UK
| | - Airlie J McCoy
- Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, The Keith Peters Building, Hills Road, Cambridge CB2 0XY, UK
| | - Hans-Jürgen Hoppe
- Tumour Growth Control Group, Oxford Molecular Pathology Institute, Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK; dAInomics Ltd, 66 High Street, Bassingbourn Royston SG8 5LF, UK
| | - Ashley J Winter
- School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK
| | - Ryan D Nicholls
- School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK
| | - Karl Harlos
- Cancer Research UK Receptor Structure Research Group, Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - E Yvonne Jones
- Cancer Research UK Receptor Structure Research Group, Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Imre Berger
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - A Bassim Hassan
- Tumour Growth Control Group, Oxford Molecular Pathology Institute, Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK.
| | - Matthew P Crump
- School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK; BrisSynBio, Life Sciences Building, Tyndall Avenue, Bristol BS8 1TQ, UK.
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5
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Panigrahi K, Fei X, Kitamura M, Berkowitz DB. Rapid Entry into Biologically Relevant α,α-Difluoroalkylphosphonates Bearing Allyl Protection-Deblocking under Ru(II)/(IV)-Catalysis. Org Lett 2019; 21:9846-9851. [PMID: 31789041 DOI: 10.1021/acs.orglett.9b03707] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convenient synthetic route to α,α-difluoroalkylphosphonates is described. Structurally diverse aldehydes are condensed with LiF2CP(O)(OCH2CH═CH2)2. The resultant alcohols are captured as the pentafluorophenyl thionocarbonates and efficiently deoxygenated with HSnBu3, BEt3, and O2, and then smoothly deblocked with CpRu(IV)(π-allyl)quinoline-2-carboxylate (1-2 mol %) in methanol as an allyl cation scavenger. These mild deprotection conditions provide access to free α,α-difluoroalkylphosphonates in nearly quantitative yield. This methodology is used to rapidly construct new bis-α,α-difluoroalkyl phosphonate inhibitors of PTPIB (protein phosphotyrosine phosphatase-1B).
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Affiliation(s)
- Kaushik Panigrahi
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Xiang Fei
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences , Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8602 , Japan
| | - David B Berkowitz
- Department of Chemistry , University of Nebraska , Lincoln , Nebraska 68588-0304 , United States
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6
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Inhibition of insulin-like growth factor II (IGF-II)-dependent cell growth by multidentate pentamannosyl 6-phosphate-based ligands targeting the mannose 6-phosphate/IGF-II receptor. Oncotarget 2018; 7:62386-62410. [PMID: 27694692 PMCID: PMC5308735 DOI: 10.18632/oncotarget.11493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/28/2016] [Indexed: 01/24/2023] Open
Abstract
The mannose 6-phosphate/insulin-like growth factor II receptor (M6P/IGF2R) binds M6P-capped ligands and IGF-II at different binding sites within the ectodomain and mediates ligand internalization and trafficking to the lysosome. Multivalent M6P-based ligands can cross-bridge the M6P/IGF2R, which increases the rate of receptor internalization, permitting IGF-II binding as a passenger ligand and subsequent trafficking to the lysosome, where the IGF-II is degraded. This unique feature of the receptor may be exploited to design novel therapeutic agents against IGF-II-dependent cancers that will lead to decreased bioavailable IGF-II within the tumor microenvironment. We have designed a panel of M6P-based ligands that bind to the M6P/IGF2R with high affinity in a bivalent manner and cause decreased cell viability. We present evidence that our ligands bind through the M6P-binding sites of the receptor and facilitate internalization and degradation of IGF-II from conditioned medium to mediate this cellular response. To our knowledge, this is the first panel of synthetic bivalent ligands for the M6P/IGF2R that can take advantage of the ligand-receptor interactions of the M6P/IGF2R to provide proof-of-principle evidence for the feasibility of novel chemotherapeutic agents that decrease IGF-II-dependent growth of cancer cells.
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7
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Crespi S, Protti S, Ravelli D, Merli D, Fagnoni M. Sugar-Assisted Photogeneration of Didehydrotoluenes from Chlorobenzylphosphonic Acids. J Org Chem 2017; 82:12162-12172. [PMID: 29019237 DOI: 10.1021/acs.joc.7b01963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Irradiation of the three isomeric chlorobenzylphophonic acids in aqueous buffer led to a pH-dependent photochemistry. Under acidic conditions (pH = 2.5), photocleavage of the Ar-Cl bond occurred and a phenyl cation chemistry resulted. Under basic conditions (pH = 11), a photoinduced release of the chloride anion followed by the detachment of the metaphosphate anion gave α,n-didehydrotoluene diradicals (α,n-DHTs), potential DNA cleaving intermediates. At a physiological pH (pH = 7.2), both a cationic and a diradical reactivity took place depending on the phosphonic acid used. It is noteworthy that the complexation exerted by a monosaccharide (glucose or methylglucopyranoside) present in solution induced an exclusive formation of α,n-DHTs. The mechanistic scenario of the different photoreactivities occurring when changing the pH of the solution and the role of the various intermediates (phenyl cations, diradicals, etc.) in the process was studied by computational analysis.
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Affiliation(s)
- Stefano Crespi
- PhotoGreen Lab, Department of Chemistry, University of Pavia , Viale Taramelli 12, 27100 Pavia, Italy
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia , Viale Taramelli 12, 27100 Pavia, Italy
| | - Davide Ravelli
- PhotoGreen Lab, Department of Chemistry, University of Pavia , Viale Taramelli 12, 27100 Pavia, Italy
| | - Daniele Merli
- PhotoGreen Lab, Department of Chemistry, University of Pavia , Viale Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia , Viale Taramelli 12, 27100 Pavia, Italy
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8
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Fei X, Zavorka ME, Malik G, Connelly CM, MacDonald RG, Berkowitz DB. General Linker Diversification Approach to Bivalent Ligand Assembly: Generation of an Array of Ligands for the Cation-Independent Mannose 6-Phosphate Receptor. Org Lett 2017; 19:4267-4270. [PMID: 28753028 PMCID: PMC6208139 DOI: 10.1021/acs.orglett.7b01914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A generalized strategy is presented for the rapid assembly of a set of bivalent ligands with a variety of linking functionalities from a common monomer. Herein, an array of phosphatase-inert mannose-6-phosphonate-presenting ligands for the cation-independent-mannose 6-phosphate receptor (CI-MPR) is constructed. Receptor binding affinity varies with linking functionality-the simple amide and 1,5-triazole(tetrazole) being preferred over the 1,4-triazole. This approach is expected to find application across chemical biology, particularly in glycoscience, wherein multivalency often governs molecular recognition.
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Affiliation(s)
- Xiang Fei
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Megan E. Zavorka
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, United States
| | - Guillaume Malik
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
| | - Christopher M. Connelly
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, United States
| | - Richard G. MacDonald
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, United States
| | - David B. Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States
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9
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Xing L, Niu Q, Li C. Practical Glucosylations and Mannosylations Using Anomeric Benzoyloxy as a Leaving Group Activated by Sulfonium Ion. ACS OMEGA 2017; 2:3698-3709. [PMID: 30023701 PMCID: PMC6044952 DOI: 10.1021/acsomega.7b00729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 07/06/2017] [Indexed: 06/08/2023]
Abstract
One obstacle for practical glycosylations is the high cost of promoters and low-temperature equipment. This problem has been at least partially solved by using MeSCH2Cl/KI as a low-cost promoter system. MeSCH2Cl has an estimated cost of <$1/mol compared with $1741/mol for AgOTf and $633/mol for TMSOTf. This new promoter system is capable of activating various leaving groups including anomeric Cl, F, trichloroacetimidate, and acyloxy groups. Stable and easy-to-prepare anomeric benzoloxy carbohydrate donors were investigated in the glycosylations of carbohydrates, aliphatic alcohols, amino acids, steroids, and nucleoside acceptors. Most of these glycosylations were operationally simple with fast reaction rates and moderate yields of 35-79%. In addition, direct glycosylations of nucleosides using less than 2 equiv of anomeric benzoloxy donors and high stereoselective mannosylation have been achieved. From an economic point of view, this glycosylation method should be highly applicable to industrial processes.
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Affiliation(s)
- Linlin Xing
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P. R. China
| | - Qun Niu
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P. R. China
| | - Chunbao Li
- Department of Chemistry, School of Science, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, P. R. China
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10
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McCune C, Chan SJ, Beio ML, Shen W, Chung WJ, Szczesniak LM, Chai C, Koh SQ, Wong PTH, Berkowitz DB. "Zipped Synthesis" by Cross-Metathesis Provides a Cystathionine β-Synthase Inhibitor that Attenuates Cellular H2S Levels and Reduces Neuronal Infarction in a Rat Ischemic Stroke Model. ACS CENTRAL SCIENCE 2016; 2:242-52. [PMID: 27163055 PMCID: PMC4850510 DOI: 10.1021/acscentsci.6b00019] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 05/08/2023]
Abstract
The gaseous neuromodulator H2S is associated with neuronal cell death pursuant to cerebral ischemia. As cystathionine β-synthase (CBS) is the primary mediator of H2S biogenesis in the brain, it has emerged as a potential target for the treatment of stroke. Herein, a "zipped" approach by alkene cross-metathesis into CBS inhibitor candidate synthesis is demonstrated. The inhibitors are modeled after the pseudo-C 2-symmetric CBS product (l,l)-cystathionine. The "zipped" concept means only half of the inhibitor needs be constructed; the two halves are then fused by olefin cross-metathesis. Inhibitor design is also mechanism-based, exploiting the favorable kinetics associated with hydrazine-imine interchange as opposed to the usual imine-imine interchange. It is demonstrated that the most potent "zipped" inhibitor 6S reduces H2S production in SH-SY5Y cells overexpressing CBS, thereby reducing cell death. Most importantly, CBS inhibitor 6S dramatically reduces infarct volume (1 h post-stroke treatment; ∼70% reduction) in a rat transient middle cerebral artery occlusion model for ischemia.
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Affiliation(s)
- Christopher
D. McCune
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Su Jing Chan
- Department
of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597
| | - Matthew L. Beio
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Weijun Shen
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Woo Jin Chung
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Laura M. Szczesniak
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Chou Chai
- Neurodegeneration
Research Laboratory, National Neuroscience
Institute, Singapore 308433
| | - Shu Qing Koh
- Department
of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597
| | - Peter T.-H. Wong
- Department
of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597
- (P.T.-H.W.) E-mail:
| | - David B. Berkowitz
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
- (D.B.D.) E-mail:
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11
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Fei X, Holmes T, Diddle J, Hintz L, Delaney D, Stock A, Renner D, McDevitt M, Berkowitz DB, Soukup JK. Phosphatase-inert glucosamine 6-phosphate mimics serve as actuators of the glmS riboswitch. ACS Chem Biol 2014; 9:2875-82. [PMID: 25254431 PMCID: PMC4273988 DOI: 10.1021/cb500458f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
![]()
The glmS riboswitch is unique among gene-regulating
riboswitches and catalytic RNAs. This is because its own metabolite,
glucosamine-6-phosphate (GlcN6P), binds to the riboswitch and catalytically
participates in the RNA self-cleavage reaction, thereby providing
a novel negative feedback mechanism. Given that a number of pathogens
harbor the glmS riboswitch, artificial actuators
of this potential RNA target are of great interest. Structural/kinetic
studies point to the 2-amino and 6-phosphate ester functionalities
in GlcN6P as being crucial for this actuation. As a first step toward
developing artificial actuators, we have synthesized a series of nine
GlcN6P analogs bearing phosphatase-inert surrogates in place of the
natural phosphate ester. Self-cleavage assays with the Bacillus cereusglmS riboswitch
give a broad SAR. Two analogs display significant activity, namely,
the 6-deoxy-6-phosphonomethyl analog (5) and the 6-O-malonyl ether (13). Kinetic profiles show
a 22-fold and a 27-fold higher catalytic efficiency, respectively,
for these analogs vs glucosamine (GlcN). Given their nonhydrolyzable
phosphate surrogate functionalities, these analogs are arguably the
most robust artificial glmS riboswitch actuators
yet reported. Interestingly, the malonyl ether (13, extra
O atom) is much more effective than the simple malonate (17), and the “sterically true” phosphonate (5) is far superior to the chain-truncated (7) or chain-extended
(11) analogs, suggesting that positioning via Mg coordination
is important for activity. Docking results are consistent with this
view. Indeed, the viability of the phosphonate and 6-O-malonyl ether
mimics of GlcN6P points to a potential new strategy for artificial
actuation of the glmS riboswitch in a biological
setting, wherein phosphatase-resistance is paramount.
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Affiliation(s)
- Xiang Fei
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Thomas Holmes
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Julianna Diddle
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Lauren Hintz
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Dan Delaney
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Alex Stock
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Danielle Renner
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - Molly McDevitt
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
| | - David B. Berkowitz
- Department
of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Juliane K. Soukup
- Department
of Chemistry, Creighton University, Omaha, Nebraska 68178, United States
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12
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Herczeg M, Mező E, Eszenyi D, Lázár L, Csávás M, Bereczki I, Antus S, Borbás A. Synthesis of 6-Sulfonatomethyl Thioglycosides by Nucleophilic Substitution: Methods to Prevent 1→6 Anomeric Group Migration of Thioglycoside 6-O-Triflates. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Liu Y, Marshall J, Li Q, Edwards N, Chen G. Synthesis of novel bivalent mimetic ligands for mannose-6-phosphate receptors. Bioorg Med Chem Lett 2013; 23:2328-31. [PMID: 23473680 DOI: 10.1016/j.bmcl.2013.02.068] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 02/10/2013] [Accepted: 02/13/2013] [Indexed: 11/17/2022]
Abstract
Mannose-6-phosphate (M6P)-containing N-linked glycans are essential signaling molecules for sorting hydrolases in eukaryotic cells. Their receptors, especially the cation-independent M6P receptors (CI-MPRs), have emerged as promising protein targets for targeted drug delivery for the treatment of lysosomal storage disease and liver fibrosis. In this Letter, we describe the design and synthesis of novel bivalent mimetic ligands for CI-MPRs. We report that for the first time, a newly-discovered binding motif, GlcNAc-M6P, has been incorporated in mimetic ligands. M6P- and GlcNAc-M6P-containing building blocks, equipped with NH2 and CO2H handles, have been prepared and assembled with an ornithine linker through amide coupling reactions. Efficient global deprotection protocols have also been developed which have been showcased in the synthesis of our novel bivalent mimetic ligands.
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Affiliation(s)
- Yunpeng Liu
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, United States
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Liu Y, Chen G. Chemical synthesis of N-linked glycans carrying both mannose-6-phosphate and GlcNAc-mannose-6-phosphate motifs. J Org Chem 2011; 76:8682-9. [PMID: 21955083 DOI: 10.1021/jo2010999] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mannose-6-phosphate (M6P) containing N-linked glycans are the essential targeting signals for hydrolases sorting in eukaryotic cells. To facilitate their structural and binding analyses, a highly efficient and convergent method has been developed to prepare complex N-linked glycans with well-defined M6P and N-acetylglucosamine (GlcNAc)-M6P motifs, a newly identified binding element for M6P receptors. The GlcNAc-M6P motif was stereoselectively installed at the late stage of the synthesis. Sequential deprotection of benzyl and acetate groups provided the fully deprotected N-glycans in excellent yield.
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Affiliation(s)
- Yunpeng Liu
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Liu Y, Chan YM, Wu J, Chen C, Benesi A, Hu J, Wang Y, Chen G. Chemical synthesis of a bisphosphorylated mannose-6-phosphate N-glycan and its facile monoconjugation with human carbonic anhydrase II for in vivo fluorescence imaging. Chembiochem 2011; 12:685-90. [PMID: 21404409 DOI: 10.1002/cbic.201000785] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Indexed: 12/11/2022]
Affiliation(s)
- Yunpeng Liu
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, PA 16802, USA
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Synthesis of sulfonic acid analogues of the non-reducing end trisaccharide of the antithrombin binding domain of heparin. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.10.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Panigrahi K, Eggen M, Maeng JH, Shen Q, Berkowitz DB. The alpha,alpha-difluorinated phosphonate L-pSer-analogue: an accessible chemical tool for studying kinase-dependent signal transduction. CHEMISTRY & BIOLOGY 2009; 16:928-36. [PMID: 19778720 PMCID: PMC2766077 DOI: 10.1016/j.chembiol.2009.08.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 07/24/2009] [Accepted: 08/03/2009] [Indexed: 11/21/2022]
Abstract
This overview focuses on the (alpha,alpha-difluoromethylene)phosphonate mimic of phosphoserine (pCF(2)Ser) and its application to the study of kinase-mediated signal transduction-pathways of great interest to drug development. The most versatile modes of access to these chemical biological tools are discussed, organized by method of PCF(2)-C bond formation. The pCF(2)-Ser mimic may be site-specifically incorporated into peptides (SPPS) and proteins (expressed protein ligation). This isopolar, dianionic pSer mimic results in a "constitutive phosphorylation" phenotype and is seen to support native protein-protein interactions that depend on serine phosphorylation. Signal transduction pathways studied with this chemical biological approach include the regulation of p53 tumor suppressor protein activity and of melatonin production. Given these successes, the future is bright for the use of such "teflon phospho-amino acid mimics" to map kinase-based signaling pathways.
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Affiliation(s)
- Kaushik Panigrahi
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588
- Eppley Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - MariJean Eggen
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588
- Eppley Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - Jun-Ho Maeng
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588
- Eppley Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - Quanrong Shen
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588
- Eppley Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
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Zadmard R, Taghvaei-Ganjali S, Gorji B, Schrader T. Calixarene Dimers as Host Molecules for Biologically Important Di- and Oligophosphates. Chem Asian J 2009; 4:1458-64. [DOI: 10.1002/asia.200900085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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