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Mohandas N, Edwards PJB, Kent LM, Jameson GB, Williams MAK. Biotinylation of reducing and non-reducing termini to create plug-and-play polysaccharides. Carbohydr Polym 2023; 305:120569. [PMID: 36737207 DOI: 10.1016/j.carbpol.2023.120569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/14/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Single-molecule studies continue to grow in popularity. In cases where biopolymer samples of interest exhibit variations in fine-structure between individual chains such single-molecule studies uniquely offer the promise of revealing deep structure-function relationships. Polysaccharides are typically studied in bulk and, as such, their study could greatly benefit from the application of single-molecule techniques. However, while for example single-molecule optical tweezers (OT) studies have become commonplace for DNA, studies of polysaccharides have lagged behind somewhat, complicated by the difficulty of studying molecules that amongst other things have more complex end-group chemistry. Recently, divalent streptavidin linkers have been shown to be capable of concatenating two pieces of biotin-terminated DNA to produce robust composite strings that run intact through conventional gels, and can be used in single-molecule OT experiments (Mohandas, Kent, Raudsepp, Jameson, & Williams, 2022). By using two such streptavidin linkers, biotin-terminated polymers could be inserted between two sections of DNA in order to facilitate single-molecule experiments on biopolymers that are currently difficult to address by other means. Here, we describe a generic approach for placing the required biotin moieties at both ends of polysaccharide chains, producing plug-and-play polysaccharide inserts that can be incorporated into composite polymer strings using streptavidin linking hubs.
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Affiliation(s)
- Nimisha Mohandas
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand
| | - Patrick J B Edwards
- School of Natural Sciences, Massey University, Palmerston North, New Zealand
| | - Lisa M Kent
- School of Natural Sciences, Massey University, Palmerston North, New Zealand
| | - Geoffrey B Jameson
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
| | - Martin A K Williams
- School of Natural Sciences, Massey University, Palmerston North, New Zealand; Riddet Institute, Massey University, Palmerston North, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand.
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2
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Cerney JP, Raskovalov A, Nasseri M, Silva MD, McReynolds KD. Synthesis and Nuclear Magnetic Resonance Structural Evaluation of Oxime-Linked Oligosialic Acid-Based Glycodendrimers. Biomacromolecules 2023; 24:1901-1911. [PMID: 36989087 PMCID: PMC10091409 DOI: 10.1021/acs.biomac.3c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
A series of four oxime-linked octavalent sialic acid and oligosialic acid poly(ether amidoamine) glycodendrimers were synthesized. In the attachment of the sialic acids to the dendrimer core, chemoselective oxime bonds were formed between the unprotected sugars (sialic acid or α-2,8-linked di- through tetra-sialic acids) and the aminooxy-terminated dendrimer core in a microwave-mediated reaction, resulting in good to excellent yields (58-100%) of the fully functionalized octavalent glycodendrimers. Next, using a combination of 1D and 2D nuclear magnetic resonance and working from the inside outward, we employed a systematic method to assign the proton and carbon signals starting with the smallest linkers and dendrimer cores and moving gradually up to the completed octavalent glycodendrimers. Through this approach, the assignment of the protons and carbons was possible, including the E- and Z-isomers related to the oxime dendrimer to sugar connections and relative quantities of each. These glycodendrimers were designed as broad-spectrum inhibitors of viral pathogens.
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Affiliation(s)
- James P Cerney
- Department of Chemistry, California State University, Sacramento 6000 J Street, Sacramento, California 95819-6057, United States
| | - Aleksey Raskovalov
- Department of Chemistry, California State University, Sacramento 6000 J Street, Sacramento, California 95819-6057, United States
| | - Monica Nasseri
- Department of Chemistry, California State University, Sacramento 6000 J Street, Sacramento, California 95819-6057, United States
| | - Madeline D Silva
- Department of Chemistry, California State University, Sacramento 6000 J Street, Sacramento, California 95819-6057, United States
| | - Katherine D McReynolds
- Department of Chemistry, California State University, Sacramento 6000 J Street, Sacramento, California 95819-6057, United States
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3
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Wells L, Vierra C, Hardman J, Han Y, Dimas D, Gwarada-Phillips LN, Blackeye R, Eggers DK, LaBranche CC, Král P, McReynolds KD. Sulfoglycodendrimer Therapeutics for HIV-1 and SARS-CoV-2. ADVANCED THERAPEUTICS 2021; 4:2000210. [PMID: 33786368 PMCID: PMC7995185 DOI: 10.1002/adtp.202000210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/04/2021] [Indexed: 12/05/2022]
Abstract
Hexavalent sulfoglycodendrimers (SGDs) are synthesized as mimics of host cell heparan sulfate proteoglycans (HSPGs) to inhibit the early stages in viral binding/entry of HIV‐1 and SARS‐CoV‐2. Using an HIV neutralization assay, the most promising of the seven candidates are found to have sub‐micromolar anti‐HIV activities. Molecular dynamics simulations are separately implemented to investigate how/where the SGDs interacted with both pathogens. The simulations revealed that the SGDs: 1) develop multivalent binding with polybasic regions within and outside of the V3 loop on glycoprotein 120 (gp120) for HIV‐1, and consecutively bind with multiple gp120 subunits, and 2) interact with basic amino acids in both the angiotensin‐converting enzyme 2 (ACE2) and HSPG binding regions of the Receptor Binding Domain (RBD) from SARS‐CoV‐2. These results illustrate the considerable potential of SGDs as inhibitors in viral binding/entry of both HIV‐1 and SARS‐CoV‐2 pathogens, leading the way for further development of this class of molecules as broad‐spectrum antiviral agents.
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Affiliation(s)
- Lauren Wells
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Cory Vierra
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Janee' Hardman
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Yanxiao Han
- Department of Chemistry University of Illinois Chicago 845 W. Taylor St. Chicago IL 60607 USA
| | - Dustin Dimas
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Lucia N Gwarada-Phillips
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Rachel Blackeye
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
| | - Daryl K Eggers
- Department of Chemistry San José State University One Washington Square San José CA 95192 USA
| | | | - Petr Král
- Department of Chemistry University of Illinois Chicago 845 W. Taylor St. Chicago IL 60607 USA.,Departments of Physics, Pharmaceutical Sciences, and Chemical Engineering University of Illinois Chicago 845 W. Taylor St. Chicago IL 60607 USA
| | - Katherine D McReynolds
- Department of Chemistry California State University Sacramento, 6000 J Street Sacramento CA 95819-6057 USA
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4
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Hauser JR, Bergström ET, Kulak AN, Warriner SL, Thomas-Oates J, Bon RS. Pyrene Tags for the Detection of Carbohydrates by Label-Assisted Laser Desorption/Ionisation Mass Spectrometry*. Chembiochem 2021; 22:1430-1439. [PMID: 33296552 DOI: 10.1002/cbic.202000721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/08/2020] [Indexed: 12/15/2022]
Abstract
Matrix-assisted laser desorption/ionisation mass spectrometry (MALDI-MS) is widely used for the analysis of biomolecules. Label-assisted laser desorption/ionisation mass spectrometry (LALDI-MS) is a matrix-free variant of MALDI-MS, in which only analytes covalently attached to a laser desorption/ionisation (LDI) enhancer are detected. LALDI-MS has shown promise in overcoming the limitations of MALDI-MS in terms of sample preparation and MS analysis. In this work, we have developed a series of pyrene-based LDI reagents (LALDI tags) that can be used for labelling and LALDI-MS analysis of reducing carbohydrates from complex (biological) samples without the need for additional chemical derivatisation or purification. We have systematically explored the suitability of four pyrene-based LDI enhancers and three aldehyde-reactive handles, optimised sample preparation, and demonstrated the use of LALDI tags for the detection of lactose. We have also exemplified the potential of LALDI tags for labelling carbohydrates in biological samples by direct detection of lactose in cow's milk. These results demonstrate that LALDI-MS is a promising technique for the analysis of reducing carbohydrates in biological samples, and pave the way for the development of LALDI-MS for glycomics and diagnostics.
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Affiliation(s)
- Jacob R Hauser
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Edmund T Bergström
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.,Centre of Excellence in Mass Spectrometry, University of York, Heslington, York, YO10 5DD, UK
| | - Alexander N Kulak
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Stuart L Warriner
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Jane Thomas-Oates
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.,Centre of Excellence in Mass Spectrometry, University of York, Heslington, York, YO10 5DD, UK
| | - Robin S Bon
- Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, LIGHT Laboratories, University of Leeds, Leeds, LS2 9JT, UK
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Development of a Microwave-assisted Chemoselective Synthesis of Oxime-linked Sugar Linkers and Trivalent Glycoclusters. Pharmaceuticals (Basel) 2019; 12:ph12010039. [PMID: 30875805 PMCID: PMC6469176 DOI: 10.3390/ph12010039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/05/2019] [Accepted: 03/08/2019] [Indexed: 01/29/2023] Open
Abstract
A rapid, high-yielding microwave-mediated synthetic procedure was developed and optimized using a model system of monovalent sugar linkers, with the ultimate goal of using this method for the synthesis of multivalent glycoclusters. The reaction occurs between the aldehyde/ketone on the sugars and an aminooxy moiety on the linker/trivalent core molecules used in this study, yielding acid-stable oxime linkages in the products and was carried out using equimolar quantities of reactants under mild aqueous conditions. Because the reaction is chemoselective, sugars can be incorporated without the use of protecting groups and the reactions can be completed in as little as 30 min in the microwave. As an added advantage, in the synthesis of the trivalent glycoclusters, the fully substituted trivalent molecules were the major products produced in excellent yields. These results illustrate the potential of this rapid oxime-forming microwave-mediated reaction in the synthesis of larger, more complex glycoconjugates and glycoclusters for use in a wide variety of biomedical applications.
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Amano Y, Nakamura M, Shiraishi S, Chigira N, Shiozawa N, Hagio M, Yano T, Hasegawa T. Preparation and functional analysis of gossypols having two carbohydrate appendages with enaminooxy linkages. Carbohydr Res 2018; 458-459:67-76. [PMID: 29466762 DOI: 10.1016/j.carres.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 11/30/2022]
Abstract
We developed new gossypol (Gos)-based glycoconjugates through dehydration condensation of native Gos and chemically modified glycosides having aminooxy groups. The resultant glycoconjugates (glycoGos) were resistant to hydrolysis, although they were light-sensitive and slowly decomposed even under indoor lighting. The glycoGos also exhibited improved water solubility compared with native Gos, but their saturated concentrations in water were still low (6.4-17 μM), due to their hydrophobic naphthyl rings. We also carried out WST-8 assays to assess the anticancer activity of the glycoGos on DLD-1 and HepG2 cells and found that the glycoGos having β-lactosides and having β-galactosides (specific ligands for asialoglycoprotein receptors) showed enhanced anticancer activity on HepG2 cells.
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Affiliation(s)
- Yoshitsugu Amano
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Masaki Nakamura
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Shinya Shiraishi
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Naoto Chigira
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Nobuya Shiozawa
- Graduate School of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Masahito Hagio
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Tomohiro Yano
- Faculty of Food and Nutritional Sciences, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan
| | - Teruaki Hasegawa
- Faculty of Life Sciences, Toyo University, 1-1-1 Izumino, Itakura-machi, Ora-gun, Gumma 374-0193, Japan; Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.
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Abstract
The synthesis and chemical and physicochemical properties as well as biological and medical applications of various hydroxylamine-functionalized carbohydrate derivatives are summarized.
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Affiliation(s)
- N. Chen
- PPSM
- ENS Cachan
- CNRS
- Alembert Institute
- Université Paris-Saclay
| | - J. Xie
- PPSM
- ENS Cachan
- CNRS
- Alembert Institute
- Université Paris-Saclay
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