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Ramírez-López P, Martínez C, Merchán A, Perona A, Hernaiz MJ. Expanding the synthesis of a library of potent glucuronic acid glycodendrons for Dengue virus inhibition. Bioorg Chem 2023; 141:106913. [PMID: 37852115 DOI: 10.1016/j.bioorg.2023.106913] [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: 08/14/2023] [Revised: 09/28/2023] [Accepted: 10/08/2023] [Indexed: 10/20/2023]
Abstract
Multivalent glycodendrons are valuable tools to mimic many structural and functional features of cell-surface glycoconjugates and its focal position scaffolds represent important components to increase specificity and affinity. Previous work in our group described the preparation of a tetravalent glucuronic acid dendron that binds with good affinity to Dengue virus envelope protein (KD = 22 μM). Herein, the chemical synthesis and binding analysis of a new library of potent glucuronic acid dendrons bearing different functional group at the focal position and different level of multivalency are described. Their chemical synthesis was performed sequentially in three stages and with good yields. Namely a) the chemical synthesis of the oligo and polyalkynyl scaffolds, b) assembling with fully protected glucuronic acid-based azide units by using a microwave assisted copper-catalysed azide-alkyne cycloaddition reaction and c) sequential deprotection of hydroxyl and carboxylic acid groups. Surface Plasmon Resonance studies have demonstrated that the valency and the focal position functional group exert influence on the interaction with Dengue virus envelope protein. Molecular modelling studies were carried out in order to understand the binding observed. This work reports an efficient glycodendrons chemical synthesis that provides appropriate focal position functional group and multivalence, that offer an easy and versatile strategy to find new active compounds against Dengue virus.
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Affiliation(s)
- Pedro Ramírez-López
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plz. Ramón y Cajal s/n, Madrid C.P. 28040, Spain
| | - Carlos Martínez
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plz. Ramón y Cajal s/n, Madrid C.P. 28040, Spain
| | - Alejandro Merchán
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plz. Ramón y Cajal s/n, Madrid C.P. 28040, Spain
| | - Almudena Perona
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plz. Ramón y Cajal s/n, Madrid C.P. 28040, Spain
| | - María J Hernaiz
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plz. Ramón y Cajal s/n, Madrid C.P. 28040, Spain.
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2
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2017-2018. MASS SPECTROMETRY REVIEWS 2023; 42:227-431. [PMID: 34719822 DOI: 10.1002/mas.21721] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2018. Also included are papers that describe methods appropriate to glycan and glycoprotein analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, new methods, matrices, derivatization, MALDI imaging, fragmentation and the use of arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Most of the applications are presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. The reported work shows increasing use of combined new techniques such as ion mobility and highlights the impact that MALDI imaging is having across a range of diciplines. MALDI is still an ideal technique for carbohydrate analysis and advancements in the technique and the range of applications continue steady progress.
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Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
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3
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Hoyos P, Perona A, Bavaro T, Berini F, Marinelli F, Terreni M, Hernáiz MJ. Biocatalyzed Synthesis of Glycostructures with Anti-infective Activity. Acc Chem Res 2022; 55:2409-2424. [PMID: 35942874 PMCID: PMC9454102 DOI: 10.1021/acs.accounts.2c00136] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Molecules containing carbohydrate moieties play essential roles in fighting a variety of bacterial and viral infections. Consequently, the design of new carbohydrate-containing drugs or vaccines has attracted great attention in recent years as means to target several infectious diseases.Conventional methods to produce these compounds face numerous challenges because their current production technology is based on chemical synthesis, which often requires several steps and uses environmentally unfriendly reactants, contaminant solvents, and inefficient protocols. The search for sustainable processes such as the use of biocatalysts and eco-friendly solvents is of vital importance. Therefore, their use in a variety of reactions leading to the production of pharmaceuticals has increased exponentially in the last years, fueled by recent advances in protein engineering, enzyme directed evolution, combinatorial biosynthesis, immobilization techniques, and flow biocatalysis. In glycochemistry and glycobiology, enzymes belonging to the families of glycosidases, glycosyltransferases (Gtfs), lipases, and, in the case of nucleoside and nucleotide analogues, also nucleoside phosphorylases (NPs) are the preferred choices as catalysts.In this Account, on the basis of our expertise, we will discuss the recent biocatalytic and sustainable approaches that have been employed to synthesize carbohydrate-based drugs, ranging from antiviral nucleosides and nucleotides to antibiotics with antibacterial activity and glycoconjugates such as neoglycoproteins (glycovaccines, GCVs) and glycodendrimers that are considered as very promising tools against viral and bacterial infections.In the first section, we will report the use of NPs and N-deoxyribosyltransferases for the development of transglycosylation processes aimed at the synthesis of nucleoside analogues with antiviral activity. The use of deoxyribonucleoside kinases and hydrolases for the modification of the sugar moiety of nucleosides has been widely investigated.Next, we will describe the results obtained using enzymes for the chemoenzymatic synthesis of glycoconjugates such as GCVs and glycodendrimers with antibacterial and antiviral activity. In this context, the search for efficient enzymatic syntheses represents an excellent strategy to produce structure-defined antigenic or immunogenic oligosaccharide analogues with high purity. Lipases, glycosidases, and Gtfs have been used for their preparation.Interestingly, many authors have proposed the use Gtfs originating from the biosynthesis of natural glycosylated antibiotics such as glycopeptides, macrolides, and aminoglycosides. These have been used in the chemoenzymatic semisynthesis of novel antibiotic derivatives by modification of the sugar moiety linked to their complex scaffold. These contributions will be described in the last section of this review because of their relevance in the fight against the spreading phenomenon of antibiotic resistance. In this context, the pioneering in vivo synthesis of novel derivatives obtained by genetic manipulation of producer strains (combinatorial biosynthesis) will be shortly described as well.All of these strategies provide a useful and environmentally friendly synthetic toolbox. Likewise, the field represents an illustrative example of how biocatalysis can contribute to the sustainable development of complex glycan-based therapies and how problems derived from the integration of natural tools in synthetic pathways can be efficiently tackled to afford high yields and selectivity. The use of enzymatic synthesis is becoming a reality in the pharmaceutical industry and in drug discovery to rapidly afford collections of new antibacterial or antiviral molecules with improved specificity and better metabolic stability.
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Affiliation(s)
- Pilar Hoyos
- Departamento
de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Almudena Perona
- Departamento
de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Teodora Bavaro
- Dipartimento
di Scienze del Farmaco, Università
di Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Francesca Berini
- Dipartimento
di Biotecnologie e Scienze della Vita, Università
degli Studi dell’Insubria, Via Dunant 3, 21100 Varese, Italy
| | - Flavia Marinelli
- Dipartimento
di Biotecnologie e Scienze della Vita, Università
degli Studi dell’Insubria, Via Dunant 3, 21100 Varese, Italy
| | - Marco Terreni
- Dipartimento
di Scienze del Farmaco, Università
di Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - María J. Hernáiz
- Departamento
de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain,
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4
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Schelch S, Koszagova R, Kuballa J, Nidetzky B. Immobilization of CMP‐sialic acid synthetase and α2,3‐sialyltransferase for cascade synthesis of 3'‐sialyl β‐D‐galactoside with enzyme reuse. ChemCatChem 2022. [DOI: 10.1002/cctc.202101860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sabine Schelch
- TU Graz: Technische Universitat Graz Institut für Biotechnologie und Bioprozesstechnik AUSTRIA
| | - Romana Koszagova
- Technische Universität Graz: Technische Universitat Graz Institut für Biotechnologie und Bioprozesstechnik AUSTRIA
| | | | - Bernd Nidetzky
- Biotechnology and Biochemical Engineering Graz University of Technology Petersgasse 12 8010 Graz AUSTRIA
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García-Oliva C, Merchán A, Perona A, Hoyos P, Rumbero Á, Hernáiz MJ. Development of sustainable synthesis of glucuronic acid glycodendrimers using ball milling and microwave-assisted CuAAC reaction. NEW J CHEM 2022. [DOI: 10.1039/d1nj06132a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two green strategies for CuAAC reaction based on two activation pathways, solvent free mechanochemistry and microwave irradiation using a recycable biosolvent, are reported for the synthesis of glucuronic acid glycodendrimers with good conversión.
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Affiliation(s)
- Cecilia García-Oliva
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Alejandro Merchán
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Almudena Perona
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Pilar Hoyos
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Ángel Rumbero
- Department in organic chemistry, Faculty of Sciences, Autonomous University of Madrid, 28049 Madrid, Spain
| | - María J. Hernáiz
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
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6
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Zhao Y, Sørensen ER, Lindkvist TT, Kjaer C, Brøndsted Nielsen M, Chen L, Brøndsted Nielsen S. Triangular Rhodamine Triads and Their Intrinsic Photophysics Revealed from Gas-Phase Ion Fluorescence Experiments. Chemistry 2021; 27:10875-10882. [PMID: 34060662 DOI: 10.1002/chem.202101322] [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: 04/13/2021] [Indexed: 11/10/2022]
Abstract
When ionic dyes are close together, the internal Coulomb interaction may affect their photophysics and the energy-transfer efficiency. To explore this, we have prepared triangular architectures of three rhodamines connected to a central triethynylbenzene unit (1,3,5-tris(buta-1,3-diyn-1-yl)benzene) based on acetylenic coupling reactions and measured fluorescence spectra of the isolated, triply charged ions in vacuo. We find from comparisons with previously reported monomer and dimer spectra that while polarization of the π-system causes redshifted emission, the separation between the rhodamines is too large for a Stark shift. This picture is supported by electrostatic calculations on model systems composed of three linear and polarizable ionic dyes in D3h configuration: The electric field that each dye experiences from the other two is too small to induce a dipole moment, both in the ground and the excited state. In the case of heterotrimers that contain either two rhodamine 575 (R575) and one R640 or one R575 and two R640, emission is almost purely from R640 although the polarization of the π-system expectedly diminishes the dipole-dipole interaction.
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Affiliation(s)
- Ying Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | | | | | - Christina Kjaer
- Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark
| | | | - Li Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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7
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Hoyos P, Perona A, Juanes O, Rumbero Á, Hernáiz MJ. Synthesis of Glycodendrimers with Antiviral and Antibacterial Activity. Chemistry 2021; 27:7593-7624. [PMID: 33533096 DOI: 10.1002/chem.202005065] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Indexed: 12/27/2022]
Abstract
Glycodendrimers are an important class of synthetic macromolecules that can be used to mimic many structural and functional features of cell-surface glycoconjugates. Their carbohydrate moieties perform key important functions in bacterial and viral infections, often regulated by carbohydrate-protein interactions. Several studies have shown that the molecular structure, valency and spatial organisation of carbohydrate epitopes in glycoconjugates are key factors in the specificity and avidity of carbohydrate-protein interactions. Choosing the right glycodendrimers almost always helps to interfere with such interactions and blocks bacterial or viral adhesion and entry into host cells as an effective strategy to inhibit bacterial or viral infections. Herein, the state of the art in the design and synthesis of glycodendrimers employed for the development of anti-adhesion therapy against bacterial and viral infections is described.
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Affiliation(s)
- Pilar Hoyos
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Almudena Perona
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Olga Juanes
- Organic Chemistry Department, Autónoma University of Madrid, Francisco Tomás y Valiente 7, 28049, Madrid, Spain
| | - Ángel Rumbero
- Organic Chemistry Department, Autónoma University of Madrid, Francisco Tomás y Valiente 7, 28049, Madrid, Spain
| | - María J Hernáiz
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
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8
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Mertsch A, He N, Yi D, Kickstein M, Fessner W. An α2,3-Sialyltransferase from Photobacterium phosphoreum with Broad Substrate Scope: Controlling Hydrolytic Activity by Directed Evolution. Chemistry 2020; 26:11614-11624. [PMID: 32596832 PMCID: PMC7540698 DOI: 10.1002/chem.202002277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Indexed: 12/12/2022]
Abstract
Defined sialoglycoconjugates are important molecular probes for studying the role of sialylated glycans in biological systems. We show that the α2,3-sialyltransferase from Photobacterium phosphoreum JT-ISH-467 (2,3SiaTpph ) tolerates a very broad substrate scope for modifications in the sialic acid part, including bulky amide variation, C5/C9 substitution, and C5 stereoinversion. To reduce the enzyme's hydrolytic activity, which erodes the product yield, an extensive structure-guided mutagenesis study identified three variants that show up to five times higher catalytic efficiency for sialyltransfer, up to ten times lower efficiency for substrate hydrolysis, and drastically reduced product hydrolysis. Variant 2,3SiaTpph (A151D) displayed the best performance overall in the synthesis of the GM3 trisaccharide (α2,3-Neu5Ac-Lac) from lactose in a one-pot, two-enzyme cascade. Our study demonstrates that several complementary solutions can be found to suppress the common problem of undesired hydrolysis activity of microbial GT80 sialyltransferases. The new enzymes are powerful catalysts for the synthesis of a wide variety of complex natural and new-to-nature sialoconjugates for biological studies.
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Affiliation(s)
- Alexander Mertsch
- Institute of Organic Chemistry and BiochemistryTechnische Universität DarmstadtAlarich-Weiss-Strasse 464287DarmstadtGermany
| | - Ning He
- Institute of Organic Chemistry and BiochemistryTechnische Universität DarmstadtAlarich-Weiss-Strasse 464287DarmstadtGermany
| | - Dong Yi
- Institute of Organic Chemistry and BiochemistryTechnische Universität DarmstadtAlarich-Weiss-Strasse 464287DarmstadtGermany
| | - Michael Kickstein
- Institute of Organic Chemistry and BiochemistryTechnische Universität DarmstadtAlarich-Weiss-Strasse 464287DarmstadtGermany
| | - Wolf‐Dieter Fessner
- Institute of Organic Chemistry and BiochemistryTechnische Universität DarmstadtAlarich-Weiss-Strasse 464287DarmstadtGermany
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9
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Takeuchi R, Igarashi R, Kubo K, Mizuta T, Kume S. Substituent‐Biased CO
2
Reduction on Copper Cathodes Modified with Spaced Organic Structures. ChemElectroChem 2020. [DOI: 10.1002/celc.202000149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ryuji Takeuchi
- Department of Chemistry, Graduate School of ScienceHiroshima University 1-2-1, Kagamiyama Higashi-Hiroshima Japan
| | - Ryota Igarashi
- Department of Chemistry, Graduate School of ScienceHiroshima University 1-2-1, Kagamiyama Higashi-Hiroshima Japan
| | - Kazuyuki Kubo
- Department of Chemistry, Graduate School of ScienceHiroshima University 1-2-1, Kagamiyama Higashi-Hiroshima Japan
| | - Tsutomu Mizuta
- Department of Chemistry, Graduate School of ScienceHiroshima University 1-2-1, Kagamiyama Higashi-Hiroshima Japan
| | - Shoko Kume
- Department of Chemistry, Graduate School of ScienceHiroshima University 1-2-1, Kagamiyama Higashi-Hiroshima Japan
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10
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Josenhans C, Müthing J, Elling L, Bartfeld S, Schmidt H. How bacterial pathogens of the gastrointestinal tract use the mucosal glyco-code to harness mucus and microbiota: New ways to study an ancient bag of tricks. Int J Med Microbiol 2020; 310:151392. [DOI: 10.1016/j.ijmm.2020.151392] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/28/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022] Open
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11
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García‐Oliva C, Cabanillas AH, Perona A, Hoyos P, Rumbero Á, Hernáiz MJ. Efficient Synthesis of Muramic and Glucuronic Acid Glycodendrimers as Dengue Virus Antagonists. Chemistry 2020; 26:1588-1596. [DOI: 10.1002/chem.201903788] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/17/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Cecilia García‐Oliva
- Departamento de Química en Ciencias FarmacéuticasFacultad de FarmaciaUniversidad Complutense de Madrid 28040 Madrid Spain
| | | | - Almudena Perona
- Departamento de Química en Ciencias FarmacéuticasFacultad de FarmaciaUniversidad Complutense de Madrid 28040 Madrid Spain
| | - Pilar Hoyos
- Departamento de Química en Ciencias FarmacéuticasFacultad de FarmaciaUniversidad Complutense de Madrid 28040 Madrid Spain
| | - Ángel Rumbero
- Departamento de Química OrgánicaUniversidad Autónoma de Madrid 28049 Madrid Spain
| | - María J. Hernáiz
- Departamento de Química en Ciencias FarmacéuticasFacultad de FarmaciaUniversidad Complutense de Madrid 28040 Madrid Spain
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12
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Kooner AS, Yu H, Chen X. Synthesis of N-Glycolylneuraminic Acid (Neu5Gc) and Its Glycosides. Front Immunol 2019; 10:2004. [PMID: 31555264 PMCID: PMC6724515 DOI: 10.3389/fimmu.2019.02004] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/07/2019] [Indexed: 12/12/2022] Open
Abstract
Sialic acids constitute a family of negatively charged structurally diverse monosaccharides that are commonly presented on the termini of glycans in higher animals and some microorganisms. In addition to N-acetylneuraminic acid (Neu5Ac), N-glycolyl neuraminic acid (Neu5Gc) is among the most common sialic acid forms in nature. Nevertheless, unlike most animals, human cells loss the ability to synthesize Neu5Gc although Neu5Gc-containing glycoconjugates have been found on human cancer cells and in various human tissues due to dietary incorporation of Neu5Gc. Some pathogenic bacteria also produce Neu5Ac and the corresponding glycoconjugates but Neu5Gc-producing bacteria have yet to be found. In addition to Neu5Gc, more than 20 Neu5Gc derivatives have been found in non-human vertebrates. To explore the biological roles of Neu5Gc and its naturally occurring derivatives as well as the corresponding glycans and glycoconjugates, various chemical and enzymatic synthetic methods have been developed to obtain a vast array of glycosides containing Neu5Gc and/or its derivatives. Here we provide an overview on various synthetic methods that have been developed. Among these, the application of highly efficient one-pot multienzyme (OPME) sialylation systems in synthesizing compounds containing Neu5Gc and derivatives has been proven as a powerful strategy.
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Affiliation(s)
| | - Hai Yu
- Department of Chemistry, University of California, Davis, Davis, CA, United States
| | - Xi Chen
- Department of Chemistry, University of California, Davis, Davis, CA, United States
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13
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Parshad B, Yadav P, Kerkhoff Y, Mittal A, Achazi K, Haag R, Sharma SK. Dendrimer-based micelles as cyto-compatible nanocarriers. NEW J CHEM 2019. [DOI: 10.1039/c9nj02612f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The aim of the present study is to compare the synthesized dendritic architectures in terms of self-assembly and transport potential for hydrophobic guest molecules.
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Affiliation(s)
- Badri Parshad
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
- Institut für Chemie und Biochemie
| | - Preeti Yadav
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Yannic Kerkhoff
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Ayushi Mittal
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Katharina Achazi
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Sunil K. Sharma
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
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14
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Sialic acid as a target for the development of novel antiangiogenic strategies. Future Med Chem 2018; 10:2835-2854. [PMID: 30539670 DOI: 10.4155/fmc-2018-0298] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Sialic acid is associated with glycoproteins and gangliosides of eukaryotic cells. It regulates various molecular interactions, being implicated in inflammation and cancer, where its expression is regulated by sialyltransferases and sialidases. Angiogenesis, the formation of new capillaries, takes place during inflammation and cancer, and represents the outcome of several interactions occurring at the endothelial surface among angiogenic growth factors, inhibitors, receptors, gangliosides and cell-adhesion molecules. Here, we elaborate on the evidences that many structures involved in angiogenesis are sialylated and that their interactions depend on sialic acid with implications in angiogenesis itself, inflammation and cancer. We also discuss the possibility to exploit sialic acid as a target for the development of novel antiangiogenic drugs.
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15
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Bernardi S, Yi D, He N, Casnati A, Fessner WD, Sansone F. Complete tetraglycosylation of a calix[4]arene by a chemo-enzymatic approach. Org Biomol Chem 2017; 15:10064-10072. [DOI: 10.1039/c7ob02448g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
It was demonstrated that a calixarene can be a substrate for glycosyltransferases and thanks to an exhaustive glycosylation a multivalent tetralactosaminyl calix[4]arene was obtained.
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Affiliation(s)
- Silvia Bernardi
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Dong Yi
- Technische Universität Darmstadt
- Institute of Organic Chemistry & Biochemistry
- D-64287 Darmstadt
- Germany
| | - Ning He
- Technische Universität Darmstadt
- Institute of Organic Chemistry & Biochemistry
- D-64287 Darmstadt
- Germany
| | - Alessandro Casnati
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Wolf-Dieter Fessner
- Technische Universität Darmstadt
- Institute of Organic Chemistry & Biochemistry
- D-64287 Darmstadt
- Germany
| | - Francesco Sansone
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
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