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Kunanopparat A, Dinh TTH, Ponpakdee P, Padungros P, Kaewduangduen W, Ariya-Anandech K, Tummamunkong P, Samaeng A, Sae-Ear P, Leelahavanichkul A, Hirankarn N, Ritprajak P. Complement receptor 3-dependent engagement by Candida glabrata β-glucan modulates dendritic cells to induce regulatory T-cell expansion. Open Biol 2024; 14:230315. [PMID: 38806144 DOI: 10.1098/rsob.230315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 04/15/2024] [Indexed: 05/30/2024] Open
Abstract
Candida glabrata is an important pathogen causing invasive infection associated with a high mortality rate. One mechanism that causes the failure of Candida eradication is an increase in regulatory T cells (Treg), which play a major role in immune suppression and promoting Candida pathogenicity. To date, how C. glabrata induces a Treg response remains unclear. Dendritic cells (DCs) recognition of fungi provides the fundamental signal determining the fate of the T-cell response. This study investigated the interplay between C. glabrata and DCs and its effect on Treg induction. We found that C. glabrata β-glucan was a major component that interacted with DCs and consequently mediated the Treg response. Blocking the binding of C. glabrata β-glucan to dectin-1 and complement receptor 3 (CR3) showed that CR3 activation in DCs was crucial for the induction of Treg. Furthermore, a ligand-receptor binding assay showed the preferential binding of C. glabrata β-glucan to CR3. Our data suggest that C. glabrata β-glucan potentially mediates the Treg response, probably through CR3-dependent activation in DCs. This study contributes new insights into immune modulation by C. glabrata that may lead to a better design of novel immunotherapeutic strategies for invasive C. glabrata infection.
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Affiliation(s)
- Areerat Kunanopparat
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
- Center of Excellence in Immunology and Immune-Mediated Diseases, Faculty of Medicine, Chulalongkorn University , Bangkok, Thailand
| | - Truc Thi Huong Dinh
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
- Medical Microbiology Interdisciplinary Program, Graduate School, Chulalongkorn University , Bangkok, Thailand
- Department of Pathophysiology and Immunology, Faculty of Medicine, Can Tho University of Medicine and Pharmacy , Vietnam
| | - Pranpariya Ponpakdee
- Department of Chemistry, Faculty of Science, Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Chulalongkorn University , Bangkok, Thailand
| | - Panuwat Padungros
- Department of Chemistry, Faculty of Science, Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Chulalongkorn University , Bangkok, Thailand
| | - Warerat Kaewduangduen
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
| | - Kasirapat Ariya-Anandech
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
| | - Phawida Tummamunkong
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
| | - Amanee Samaeng
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
| | - Pannagorn Sae-Ear
- Faculty of Dentistry, Oral Biology Research Center, Chulalongkorn University , Bangkok, Thailand
| | - Asada Leelahavanichkul
- Department of Microbiology, Faculty of Medicine, Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Chulalongkorn University , Bangkok, Thailand
| | - Nattiya Hirankarn
- Center of Excellence in Immunology and Immune-Mediated Diseases, Faculty of Medicine, Chulalongkorn University , Bangkok, Thailand
| | - Patcharee Ritprajak
- Department of Microbiology, Faculty of Dentistry, Center of Excellence in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Chulalongkorn University , Bangkok, Thailand
- Department of Microbiology, Faculty of Dentistry, Chulalongkorn University , Bangkok, Thailand
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Buntasana S, Padungros P. Glycosylation of n-pentenyl glycosides using bromodiethylsulfonium salt as an activator: interception of the glycosyl intermediate by chloride ion transfer. Org Biomol Chem 2023; 22:126-143. [PMID: 38051124 DOI: 10.1039/d3ob01618h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Utilization of n-pentenyl glycosides (NPGs) in modern carbohydrate synthesis may be hindered by their sluggish activation, which results from reversible halogenation and cyclization processes. Bromodiethylsulfonium bromopentachloroantimonate (BDSB) has been previously shown to be a powerful brominating agent for the cation-π polyene cyclization of less reactive and electron-poor polyenes. This study demonstrates the activation of NPGs using BDSB as a powerful brominating agent. BDSB effectively activates the terminal olefins of NPGs and the reaction proceeds through 5-exo-tet cyclization, offering a rapid and mild approach for glycosylation with a wide range of glycosyl donors, including n-pentenyl mannoside, n-pentenyl galactoside, and n-pentenyl glucoside. The success of this approach derives from the chloride ion transfer from the nonnucleophilic SbCl5Br anion to the glycosyl intermediate, which disrupts the equilibrium and produces a glycosyl chloride intermediate that is smoothly converted to 22 coupling products, with yields ranging from moderate to excellent (49-100%). The β-selective glycosylation is accomplished when employing NPGs equipped with a neighboring participating group. The practicality of the BDSB-activated glycosylation is demonstrated by a gram-scale synthesis. This study showcases BDSB as a potent activator for NPG glycosylation through the interception of a glycosyl intermediate that diminishes the equilibration during halogenation and 5-exo-tet cyclization.
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Affiliation(s)
- Supanat Buntasana
- Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Production and Environmental Remediation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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Buntasana S, Seankongsuk P, Vilaivan T, Padungros P. Household Ozone Disinfector as An Alternative Ozone Generator for Ozonolysis of Alkenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Supanat Buntasana
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Pattarakiat Seankongsuk
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
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Ratthachag T, Buntasana S, Vilaivan T, Padungros P. Surfactant-mediated thioglycosylation of 1-hydroxy sugars in water. Org Biomol Chem 2021; 19:822-836. [PMID: 33403378 DOI: 10.1039/d0ob02246b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thioglycosides are an important class of sugars, since they can be used as non-ionic biosurfactants, biomimetic glycosides, and building blocks for carbohydrate synthesis. Previously, Brønsted- or Lewis-acid-catalyzed dehydrative glycosylations between a 1-hydroxy sugar and a thiol have been reported to yield open-chain dithioacetal sugars as the major products instead of the desired thioglycosides. These dithioacetal sugars are by-products derived from the endocyclic bond cleavage of the thioglycosides. Herein, we report dehydrative glycosylation in water mediated by a Brønsted acid-surfactant combined catalyst (BASC). Glycosylations between 1-hydroxy furanosyl/pyranosyl sugars and primary, secondary, and tertiary aliphatic/aromatic thiols in the presence of dodecyl benzenesulfonic acid (DBSA) provided the thioglycoside products in moderate to good yields. Microwave irradiation led to improvements in the yields and a shortening of the reaction time. Remarkably, open-chain dithioacetal sugars were not detected in the DBSA-mediated glycosylations in water. This method is a simple, convenient, and rapid approach to produce a library of thioglycosides without the requirement of anhydrous conditions. Moreover, this work also provides an excellent example of complementary reactivity profiles of glycosylation in organic solvents and water.
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Affiliation(s)
- Trichada Ratthachag
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Supanat Buntasana
- Green Chemistry for Fine Chemical Productions STAR, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Productions STAR, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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Zhu S, Li J, Loka RS, Song Z, Vlodavsky I, Zhang K, Nguyen HM. Modulating Heparanase Activity: Tuning Sulfation Pattern and Glycosidic Linkage of Oligosaccharides. J Med Chem 2020; 63:4227-4255. [PMID: 32216347 DOI: 10.1021/acs.jmedchem.0c00156] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Heparanase cleaves polymeric heparan sulfate (HS) molecules into smaller oligosaccharides, allowing for release of angiogenic growth factors promoting tumor development and autoreactive immune cells to reach the insulin-producing β cells. Interaction of heparanase with HS chains is regulated by specific substrate sulfation sequences. We have synthesized 11 trisaccharides that are highly tunable in structure and sulfation pattern, allowing us to determine how heparanase recognizes HS substrate and selects a favorable cleavage site. Our study shows that (1) N-SO3- at +1 subsite and 6-O-SO3- at -2 subsite of trisaccharides are critical for heparanase recognition, (2) addition of 2-O-SO3- at the -1 subsite and of 3-O-SO3- to GlcN unit is not advantageous, and (3) the anomeric configuration (α or β) at the reducing end is crucial in controlling heparanase activity. Our study also illustrates that the α-trisaccharide having N- and 6-O-SO3- at -2 and +1 subsites inhibited heparanase and was resistant toward hydrolysis.
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Affiliation(s)
- Sanyong Zhu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Jiayi Li
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Ravi S Loka
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Zhenfeng Song
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan 48201, United States
| | - Israel Vlodavsky
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa 31096, Israel
| | - Kezhong Zhang
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan 48201, United States
| | - Hien M Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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6
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Li J, Liu Y, Song X, Wu T, Meng J, Zheng Y, Qin Q, Zhao D, Cheng M. An Acid-Catalyzed Epoxide Ring-Opening/Transesterification Cascade Cyclization to Diastereoselective Syntheses of (±)-β-Noscapine and (±)-β-Hydrastine. Org Lett 2019; 21:7149-7153. [PMID: 31449423 DOI: 10.1021/acs.orglett.9b02715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An acid-catalyzed stereoselective epoxide ring-opening/intramolecular transesterification cascade cyclization reaction and N-Boc deprotection was found to be a successful strategy to construct the phthalide tetrahydroisoquinoline skeleton in one pot. Based on this strategy, the unified and highly diastereoselective routes for the total syntheses of (±)-β-Noscapine and (±)-β-Hydrastine were exploited.
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Affiliation(s)
- Jihui Li
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.,Institute of Drug Research in Medicine Capital of China, Benxi, 117000, People's Republic of China
| | - Xinjing Song
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Tianxiao Wu
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Jiaxin Meng
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yang Zheng
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Qiaohua Qin
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Dongmei Zhao
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.,Institute of Drug Research in Medicine Capital of China, Benxi, 117000, People's Republic of China
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Le Mai Hoang K, He JX, Báti G, Chan-Park MB, Liu XW. A minimalist approach to stereoselective glycosylation with unprotected donors. Nat Commun 2017; 8:1146. [PMID: 29079775 PMCID: PMC5660076 DOI: 10.1038/s41467-017-01073-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/16/2017] [Indexed: 12/30/2022] Open
Abstract
Mechanistic study of carbohydrate interactions in biological systems calls for the chemical synthesis of these complex structures. Owing to the specific stereo-configuration at each anomeric linkage and diversity in branching, significant breakthroughs in recent years have focused on either stereoselective glycosylation methods or facile assembly of glycan chains. Here, we introduce the unification approach that offers both stereoselective glycosidic bond formation and removal of protection/deprotection steps required for further elongation. Using dialkylboryl triflate as an in situ masking reagent, a wide array of glycosyl donors carrying one to three unprotected hydroxyl groups reacts with various glycosyl acceptors to furnish the desired products with good control over regioselectivity and stereoselectivity. This approach demonstrates the feasibility of straightforward access to important structural scaffolds for complex glycoconjugate synthesis. Oligosaccharide synthesis is encumbered by multiple protection and deprotection steps. Here, the authors report a protection-free yet stereoselective and regioselective glycosylation strategy using boron-masked glycosyl donors, and demonstrate efficient synthesis of oligosaccharides over a wide substrate scope.
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Affiliation(s)
- Kim Le Mai Hoang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Jing-Xi He
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Gábor Báti
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Mary B Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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Angles d’Ortoli T, Hamark C, Widmalm G. Structure–Reactivity Relationships of Conformationally Armed Disaccharide Donors and Their Use in the Synthesis of a Hexasaccharide Related to the Capsular Polysaccharide from Streptococcus pneumoniae Type 37. J Org Chem 2017; 82:8123-8140. [DOI: 10.1021/acs.joc.7b01264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Thibault Angles d’Ortoli
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
| | - Christoffer Hamark
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
| | - Göran Widmalm
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
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10
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Fascione MA, Brabham R, Turnbull WB. Mechanistic Investigations into the Application of Sulfoxides in Carbohydrate Synthesis. Chemistry 2016; 22:3916-28. [PMID: 26744250 PMCID: PMC4794778 DOI: 10.1002/chem.201503504] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Indexed: 12/04/2022]
Abstract
The utility of sulfoxides in a diverse range of transformations in the field of carbohydrate chemistry has seen rapid growth since the first introduction of a sulfoxide as a glycosyl donor in 1989. Sulfoxides have since developed into more than just anomeric leaving groups, and today have multiple roles in glycosylation reactions. These include as activators for thioglycosides, hemiacetals, and glycals, and as precursors to glycosyl triflates, which are essential for stereoselective β-mannoside synthesis, and bicyclic sulfonium ions that facilitate the stereoselective synthesis of α-glycosides. In this review we highlight the mechanistic investigations undertaken in this area, often outlining strategies employed to differentiate between multiple proposed reaction pathways, and how the conclusions of these investigations have and continue to inform upon the development of more efficient transformations in sulfoxide-based carbohydrate synthesis.
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Affiliation(s)
- Martin A Fascione
- York Structural Biology Lab, Department of Chemistry, University of York, Heslington Road, York, YO10 5DD, UK.
| | - Robin Brabham
- York Structural Biology Lab, Department of Chemistry, University of York, Heslington Road, York, YO10 5DD, UK
| | - W Bruce Turnbull
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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Frihed TG, Bols M, Pedersen CM. Mechanisms of Glycosylation Reactions Studied by Low-Temperature Nuclear Magnetic Resonance. Chem Rev 2015; 115:4963-5013. [DOI: 10.1021/cr500434x] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
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