1
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Romanò C, Jiang H, Tahvili S, Wei P, Keiding UB, Clergeaud G, Skovbakke SL, Blomberg AL, Hafkenscheid L, Henriksen JR, Andresen TL, Goletz S, Hansen AE, Christensen D, Clausen MH. Chemical synthesis and immunological evaluation of cancer vaccines based on ganglioside antigens and α-galactosylceramide. RSC Med Chem 2024; 15:2718-2728. [PMID: 39149099 PMCID: PMC11324045 DOI: 10.1039/d4md00387j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/20/2024] [Indexed: 08/17/2024] Open
Abstract
iNKT cells - often referred as the "Swiss Army knife" of the immune system - have emerged as central players in cancer vaccine therapies. Glycolipids activating iNKT cells, such as α-galactosylceramide (αGalCer), can enhance the immune response against co-delivered cancer antigens and have been applied in the design of self-adjuvanting anti-tumor vaccines. In this context, this work focuses on the chemical synthesis of ganglioside tumor-associated carbohydrate antigens (TACAs), namely GM3 and (Neu5Gc)GM3 antigens, their conjugation to αGalCer, and their formulation into liposomes as an efficient platform for their in vivo delivery. Liposomes containing GM3-αGalCer, (Neu5Gc)GM3-αGalCer, and equimolar amounts of the two conjugates have been fully characterized and their ability to activate iNKT cell has been confirmed ex vivo in mouse and human cell assays. The candidates were tested in in vivo immunization studies, demonstrating an ability to induce both TH1 and TH2 cytokines leading to the production of all subclasses of IgG antibodies. Notably, the study also demonstrated that serum antibodies raised against the two TACAs, alone and in combination, were cross-reactive. This finding has consequences for future vaccine designs - even if a highly tumor-selective antigen is chosen, the resulting antibody response may be broader than anticipated.
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Affiliation(s)
- Cecilia Romanò
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
| | - Hao Jiang
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
| | - Sahar Tahvili
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
| | - Peng Wei
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
| | - Ulrik B Keiding
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
| | - Gael Clergeaud
- Department of Health Technology, Section for Biotherapeutic Engineering and Drug Targeting, Technical University of Denmark Ørsteds Plads 2800 Kgs Lyngby Denmark
| | - Sarah Line Skovbakke
- Department of Biotechnology and Biomedicine, Section for Medical Biotechnology, Biotherapeutic Glycoengineering and Immunology, Technical University of Denmark Søltofts Plads 2800 Kgs Lyngby Denmark
| | - Anne Louise Blomberg
- Department of Biotechnology and Biomedicine, Section for Medical Biotechnology, Biotherapeutic Glycoengineering and Immunology, Technical University of Denmark Søltofts Plads 2800 Kgs Lyngby Denmark
| | - Lise Hafkenscheid
- Department of Biotechnology and Biomedicine, Section for Medical Biotechnology, Biotherapeutic Glycoengineering and Immunology, Technical University of Denmark Søltofts Plads 2800 Kgs Lyngby Denmark
| | - Jonas R Henriksen
- Department of Health Technology, Section for Biotherapeutic Engineering and Drug Targeting, Technical University of Denmark Ørsteds Plads 2800 Kgs Lyngby Denmark
| | - Thomas L Andresen
- Department of Health Technology, Section for Biotherapeutic Engineering and Drug Targeting, Technical University of Denmark Ørsteds Plads 2800 Kgs Lyngby Denmark
| | - Steffen Goletz
- Department of Biotechnology and Biomedicine, Section for Medical Biotechnology, Biotherapeutic Glycoengineering and Immunology, Technical University of Denmark Søltofts Plads 2800 Kgs Lyngby Denmark
| | - Anders E Hansen
- Department of Health Technology, Section for Biotherapeutic Engineering and Drug Targeting, Technical University of Denmark Ørsteds Plads 2800 Kgs Lyngby Denmark
| | - Dennis Christensen
- Adjuvant Systems Research & Development, Croda Pharma 2800 Lyngby Denmark
| | - Mads H Clausen
- Center for Nanomedicine & Theranostics, Department of Chemistry, Technical University of Denmark Kemitorvet 207 2800 Kgs. Lyngby Denmark
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2
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Rana A, Misra AK. Convergent synthesis of the pentasaccharide repeating unit corresponding to the cell wall O-polysaccharide of Salmonella milwaukee (group U) O:43 strain. Carbohydr Res 2024; 542:109176. [PMID: 38851144 DOI: 10.1016/j.carres.2024.109176] [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: 04/17/2024] [Revised: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Synthesis of the pentasaccharide repeating unit of the cell O-polysaccharide produced by Salmonella milwaukee O:43 strain (group U) has been achieved in very good yield adopting a convergent stereoselective [3 + 2] block glycosylation strategy. Thioglycosides and glycosyl trichloroacetimidate derivative were used as glycosyl donors in the presence of a combination of N-iodosuccinimide (NIS) and trimethylsilyl trifluoromethanesulfonate (TMSOTf) as thiophilic activator and TMSOTf as trichloroacetimidate activator respectively. The stereochemical outcome of all glycosylation reactions was excellent.
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Affiliation(s)
- Abhijit Rana
- Bose Institute, Department of Chemical Sciences, Block EN-80, Sector-V, Salt Lake, Kolkata, 700091, India
| | - Anup Kumar Misra
- Bose Institute, Department of Chemical Sciences, Block EN-80, Sector-V, Salt Lake, Kolkata, 700091, India.
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3
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Imperio D, Valloni F, Caprioglio D, Minassi A, Casali E, Panza L. Stereoselective Shi-type epoxidation with 3-oxo-4,6- O-benzylidene pyranoside catalysts: unveiling the role of carbohydrate skeletons. RSC Adv 2024; 14:16778-16783. [PMID: 38784424 PMCID: PMC11112678 DOI: 10.1039/d4ra03011g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024] Open
Abstract
Asymmetric epoxidation represents a hot topic in organic synthesis. In recent years, organocatalysts based on sugar skeletons have been exploited in asymmetric epoxidation to achieve enantiomeric pure epoxides. In this work, two different endocyclic ketones derived from glucose and galactose protected with a 4,6-O-benzylidene group have been prepared and exploited for Shi-type epoxidation. The two carbohydrates show an opposite preferential stereoselective epoxidation on various olefins, affording the epoxides in high conversions and modest enantioselectivities. DFT calculations disclosed the reasons behind the inversion of selectivity achieved by the two catalysts, showing that a delicate balance between the catalyst conformation, its protecting groups, and the secondary interactions with the substrate govern the final observed results.
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Affiliation(s)
- Daniela Imperio
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Filippo Valloni
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Diego Caprioglio
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Alberto Minassi
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
| | - Emanuele Casali
- Department of Chemistry, University of Pavia Viale Taramelli, 12 27100 Pavia Italy
| | - Luigi Panza
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale Largo Donegani 2 28100 Novara Italy
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4
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Diversity-Oriented Synthesis of a Molecular Library of Immunomodulatory α-Galactosylceramides with Fluorous-Tag-Assisted Purification and Evaluation of Their Bioactivities in Regard to IL-2 Secretion. Int J Mol Sci 2022; 23:ijms232113403. [DOI: 10.3390/ijms232113403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/25/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
Structural variants of α-galactosylceramide (α-GalCer) that stimulate invariant natural killer T (iNKT) cells constitute an emerging class of immunomodulatory agents in development for numerous biological applications. Variations in lipid chain length and/or fatty acids in these glycoceramides selectively trigger specific pro-inflammatory responses. Studies that would link a specific function to a structurally distinct α-GalCer rely heavily on the availability of homogeneous and pure materials. To address this need, we report herein a general route to the diversification of the ceramide portion of α-GalCer glycolipids. Our convergent synthesis commences from common building blocks and relies on the Julia–Kocienski olefination as a key step. A cleavable fluorous tag is introduced at the non-reducing end of the sugar that facilitates quick purification of products by standard fluorous solid-phase extraction. The strategy enabled the rapid generation of a focused library of 61 α-GalCer analogs by efficiently assembling various lipids and fatty acids. Furthermore, when compared against parent α-GalCer in murine cells, many of these glycolipid variants were found to have iNKT cell stimulating activity similar to or greater than KRN7000. ELISA assaying indicated that glycolipids carrying short fatty N-acyl chains (1fc and 1ga), an unsubstituted (1fh and 1fi) or CF3-substituted phenyl ring at the lipid tail, and a flexible, shorter fatty acyl chain with an aromatic ring (1ge, 1gf, and 1gg) strongly affected the activation of iNKT cells by the glycolipid-loaded antigen-presenting molecule, CD1d. This indicates that the method may benefit the design of structural modifications to potent iNKT cell-binding glycolipids.
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5
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Li SJ, Fang Q, Huang YW, Luo YY, Mu XD, Li L, Yin XC, Yang JS. Chemical Synthesis of the Nonreducing Hexasaccharide Fragment of Axinelloside A Based on a Stepwise Glycosylation Approach. Org Lett 2022; 24:7088-7094. [PMID: 36169189 DOI: 10.1021/acs.orglett.2c02618] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An expedient synthesis of the nonreducing hexasaccharide fragment of axinelloside A has been completed via a linear stepwise glycosylation approach. Challenges involved in the synthesis include the highly stereoselective construction of five consecutive 1,2-cis-glycosidic linkages and the formation of a sterically crowded 2,3-disubstituted l-fucoside subunit. Protecting group-directing glycosylation strategies such as the remote participation effect of the benzoyl substituent and the stereocontrolling effect of the 4,6-O-benzylidene group were employed for the synthesis of the desired 1,2-cis-glycosidic linkages. Moreover, the 2,3-branched l-fucoside framework was established through a 3-O and then 2-O glycosylation sequence in which the 3-hydroxyl group of the core l-fucose unit was glycosylated first and then the 2-hydroxyl. The synthetic hexasaccharide is properly protected, so it can be employed as a precursor to synthesize its natural form.
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Affiliation(s)
- Su-Jia Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qing Fang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Wen Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yi-Yang Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Dong Mu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ling Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Chen Yin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jin-Song Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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6
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Romanò C, Clausen MH. Chemical Biology of αGalCer: a Chemist’s Toolbox for the Stimulation of Invariant Natural Killer T (iNKT) Cells. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cecilia Romanò
- Technical University of Denmark: Danmarks Tekniske Universitet Department of Chemisty Kemitorvet 207 2800 Kgs. Lyngby DENMARK
| | - Mads Hartvig Clausen
- Technical University of Denmark Department of Chemistry Kemitorvet, Building 201 2800 Kgs. Lyngby DENMARK
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7
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Li W, Guillaume J, Baqi Y, Wachsmann I, Gieselmann V, Van Calenbergh S, Müller CE. Synthesis and structure-activity relationships of cerebroside analogues as substrates of cerebroside sulphotransferase and discovery of a competitive inhibitor. J Enzyme Inhib Med Chem 2020; 35:1503-1512. [PMID: 32657203 PMCID: PMC7470129 DOI: 10.1080/14756366.2020.1791841] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/09/2020] [Accepted: 06/29/2020] [Indexed: 01/24/2023] Open
Abstract
Metachromatic leukodystrophy (MLD) is a rare genetic disease characterised by a dysfunction of the enzyme arylsulphatase A leading to the lysosomal accumulation of cerebroside sulphate (sulphatide) causing subsequent demyelination in patients. The enzyme galactosylceramide (cerebroside) sulphotransferase (CST) catalyses the transfer of a sulphate group from 3'-phosphoadenosine-5'-phosphosulphate (PAPS) to cerebrosides producing sulphatides. Substrate reduction therapy for arylsulphatase A by inhibition of CST was proposed as a promising therapeutic approach. To identify competitive CST inhibitors, we synthesised and investigated analogues of the substrate galactosylceramide with variations at the anomeric position, the acyl substituent and the carbohydrate moiety, and investigated their structure-activity relationships. While most of the compounds behaved as substrates, α-galactosylceramide 16 was identified as the first competitive CST inhibitor. Compound 16 can serve as a new lead structure for the development of drugs for the treatment of this devastating disease, MLD, for which small molecule therapeutics are currently not available.
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Affiliation(s)
- Wenjin Li
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | | | - Younis Baqi
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Isabell Wachsmann
- Institut für Biochemie und Molekularbiologie, University of Bonn, Bonn, Germany
| | - Volkmar Gieselmann
- Institut für Biochemie und Molekularbiologie, University of Bonn, Bonn, Germany
| | | | - Christa E. Müller
- Department of Pharmaceutical & Medicinal Chemistry, PharmaCenter Bonn, Pharmaceutical Institute, University of Bonn, Bonn, Germany
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8
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Hartrampf N, Seki T, Baumann A, Watson P, Vepřek NA, Hetzler BE, Hoffmann-Röder A, Tsuji M, Trauner D. Optical Control of Cytokine Production Using Photoswitchable Galactosylceramides. Chemistry 2020; 26:4476-4479. [PMID: 31788876 DOI: 10.1002/chem.201905279] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Indexed: 12/28/2022]
Abstract
α-Galactosylceramides are glycosphingolipids that show promise in cancer immunotherapy. After presentation by CD1d, they activate natural killer T cells (NKT), which results in the production of a variety of pro-inflammatory and immunomodulatory cytokines. Herein, we report the synthesis and biological evaluation of photochromic derivatives of KRN-7000, the activity of which can be modulated with light. Based on established structure-activity relationships, we designed photoswitchable analogues of this glycolipid that control the production of pro-inflammatory cytokines, such as IFN-γ. The azobenzene derivative α-GalACer-4 proved to be more potent than KRN-7000 itself when activated with 370 nm light. Photolipids of this type could improve our mechanistic understanding of cytokine production and could open new directions in photoimmunotherapy.
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Affiliation(s)
- Nina Hartrampf
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
| | - Toshiyuki Seki
- The Aaron Diamond AIDS Research Center, Affiliate of the Rockefeller University, 455 First Avenue, 7th Floor, New York, NY, 10016, USA
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105, Japan
| | - Andreas Baumann
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
| | - Philip Watson
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
| | - Nynke A Vepřek
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377, München, Germany
| | - Belinda E Hetzler
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377, München, Germany
| | - Anja Hoffmann-Röder
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
| | - Moriya Tsuji
- The Aaron Diamond AIDS Research Center, Affiliate of the Rockefeller University, 455 First Avenue, 7th Floor, New York, NY, 10016, USA
| | - Dirk Trauner
- Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377, München, Germany
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9
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Janssens J, Van der Eycken J, Van Calenbergh S. Ceramide-Templated Macrolactams: Total Synthesis and Biological Evaluation of Macrocyclic α-Galactosylceramide Analogues and their Aglycons. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jonas Janssens
- Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460, B -9000 Ghent Belgium
| | - Johan Van der Eycken
- Department of Organic and Macromolecular Chemistry; Krijgslaan 281 (S4), B -9000 Ghent Belgium
| | - Serge Van Calenbergh
- Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460, B -9000 Ghent Belgium
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10
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Panza L, Compostella F, Imperio D. A versatile synthesis of αGalCer and its analogues exploiting a cyclic carbonate as phytosphingosine 3,4-diol protecting group. Carbohydr Res 2019; 472:50-57. [DOI: 10.1016/j.carres.2018.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/06/2018] [Accepted: 11/06/2018] [Indexed: 12/20/2022]
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11
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Yao D, Liu Y, Gao Q, Sui Q, Liu X, Ding N. A comparison of benzyl and 2-naphthylmethyl ethers as permanent hydroxyl protecting groups in the synthesis of α-galactoglycosphingolipids KRN7000 and PBS-57. J Carbohydr Chem 2017. [DOI: 10.1080/07328303.2017.1375114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dongming Yao
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, China
| | - Yichu Liu
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Qi Gao
- China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Qiang Sui
- China State Institute of Pharmaceutical Industry, Shanghai, China
| | - Xiaoping Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, China
| | - Ning Ding
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
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12
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Galactosylsphingamides: new α-GalCer analogues to probe the F'-pocket of CD1d. Sci Rep 2017; 7:4276. [PMID: 28655912 PMCID: PMC5487351 DOI: 10.1038/s41598-017-04461-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 05/16/2017] [Indexed: 01/08/2023] Open
Abstract
Invariant Natural Killer T-cells (iNKT-cells) are an attractive target for immune response modulation, as upon CD1d-mediated stimulation with KRN7000, a synthetic α-galactosylceramide, they produce a vast amount of cytokines. Here we present a synthesis that allows swift modification of the phytosphingosine side chain by amidation of an advanced methyl ester precursor. The resulting KRN7000 derivatives, termed α-galactosylsphingamides, were evaluated for their capacity to stimulate iNKT-cells. While introduction of the amide-motif in the phytosphingosine chain is tolerated for CD1d binding and TCR recognition, the studied α-galactosylsphingamides showed compromised antigenic properties.
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13
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Si A, Misra AK. Concise synthesis of the pyruvic acid acetal containing pentasaccharide repeating unit of the cell wall O-antigen of Escherichia coli O156. RSC Adv 2017. [DOI: 10.1039/c7ra07567g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The pentasaccharide repeating unit of the cell wall O-antigen ofEscherichia coliO156 containing 4,6-O-(R)-pyruvate acetal was synthesized using stereoselective [2 + 3] block glycosylation in satisfactory yield.
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Affiliation(s)
- Anshupriya Si
- Bose Institute
- Division of Molecular Medicine
- Kolkata 700054
- India
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14
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Trost BM, Stivala CE, Fandrick DR, Hull KL, Huang A, Poock C, Kalkofen R. Total Synthesis of (-)-Lasonolide A. J Am Chem Soc 2016; 138:11690-701. [PMID: 27548113 PMCID: PMC5728428 DOI: 10.1021/jacs.6b05127] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The lasonolides are novel polyketides that have displayed remarkable biological activity in vitro against a variety of cancer cell lines. Herein we describe our first-generation approach to the formal synthesis of lasonolide A. The key findings from these studies ultimately allowed us to go on and complete a total synthesis of lasonolide A. The convergent approach unites two highly complex fragments utilizing a Ru-catalyzed alkene-alkyne coupling. This type of coupling typically generates branched products; however, through a detailed investigation, we are now able to demonstrate that subtle structural changes to the substrates can alter the selectivity to favor the formation of the linear product. The synthesis of the fragments features a number of atom-economical transformations which are highlighted by the discovery of an engineered enzyme to perform a dynamic kinetic reduction of a β-ketoester to establish the absolute stereochemistry of the southern tetrahydropyran ring with high levels of enantioselectivity.
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Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Craig E. Stivala
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Daniel R. Fandrick
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Kami L. Hull
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Audris Huang
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Caroline Poock
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Rainer Kalkofen
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
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15
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Liu Q, Guo T, Li F, Li D. Concise synthesis of a new triterpenoid saponin from the roots of Gypsophila oldhamiana and its derivatives as α-glucosidase inhibitors. NEW J CHEM 2016. [DOI: 10.1039/c6nj01602b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The natural triterpenoid saponin 1 and its derivatives 2–3 were synthesized and exhibited potent inhibitory activities against α-glucosidase in vitro.
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Affiliation(s)
- Qingchao Liu
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
- Department of Applied Biology & Chemical Technology
| | - Tiantian Guo
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
| | - Fahui Li
- College of Chemistry and Chemical Engineering and Environmental Engineering
- Weifang University
- Weifang
- P. R. China
| | - Dong Li
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
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16
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Recent progress in the field of glycoconjugates. Carbohydr Res 2015; 402:124-32. [DOI: 10.1016/j.carres.2014.10.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/07/2014] [Accepted: 10/10/2014] [Indexed: 01/13/2023]
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17
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El-Dahshan A, Al-Gharabli SI, Radetzki S, Al-Tel TH, Kumar P, Rademann J. Flexible, polymer-supported synthesis of sphingosine derivatives provides ceramides with enhanced biological activity. Bioorg Med Chem 2014; 22:5506-12. [DOI: 10.1016/j.bmc.2014.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 07/15/2014] [Accepted: 07/16/2014] [Indexed: 11/26/2022]
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18
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Jambal I, Kefurt K, Hlaváčková M, Moravcová J. Synthesis of 2-fluoro and 4-fluoro galactopyranosyl phosphonate analogues of UDP-Gal. Carbohydr Res 2012; 360:31-9. [PMID: 22975276 DOI: 10.1016/j.carres.2012.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 07/13/2012] [Accepted: 07/17/2012] [Indexed: 12/01/2022]
Abstract
Two novel nonisosteric UDP-Gal analogues, (2-deoxy-2-fluoro- and 4-deoxy-4-fluoro-α-D-galactopyranosyl) phosphonoyl phosphates, were synthesized by optimized multistep procedures starting from 3,4,6-tri-O-benzyl-D-galactal and allyl 2,3,6-tri-O-benzyl-α-D-glucopyranoside, respectively. The key steps were a Michaelis-Arbuzov reaction of respective deoxy-fluoro-D-galactopyranosyl acetate with triethyl phosphite followed by a Moffatt-Khorana coupling reaction with UMP-morpholidate. The structure of all new compounds was confirmed by NMR and mass spectroscopies..
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Affiliation(s)
- Irekhjargal Jambal
- Department of Chemistry of Natural Compounds, Institute of Chemical Technology Prague, Technická 5, Prague 166 28, Czech Republic
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19
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Structure-activity relationship studies of novel glycosphingolipids that stimulate natural killer T-cells. Biosci Biotechnol Biochem 2012; 76:1055-67. [PMID: 22790924 DOI: 10.1271/bbb.120072] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
KRN7000, an anticancer drug candidate developed by Kirin Brewery Co. in 1995, is an α-galactosyl ceramide. It is a ligand making a complex with CD1d protein, and it stimulates invariant natural killer T (NKT) cells, which are one of the lineages of immunocytes. NKT cells activated by recognition of the CD1d/KRN7000 complex with its invariant T-cell receptor (TCR) can induce both protective and regulatory immune responses. To determine the recognition and activation mechanisms of NKT cells and to develop drug candidates more effective than KRN7000, a large number of analogs of KRN7000 have been synthesized. Some of them show potent bioactivities and have the potential of being utilized as therapeutic agents. In this review, structure-activity relationship studies of novel glycolipids which stimulate NKT cells efficiently are summarized.
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20
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Kakita K, Tsuda T, Suzuki N, Nakamura S, Nambu H, Hashimoto S. A stereocontrolled construction of 2-azido-2-deoxy-1,2-cis-α-galactosidic linkages utilizing 2-azido-4,6-O-benzylidene-2-deoxygalactopyranosyl diphenyl phosphates: stereoselective synthesis of mucin core 5 and core 7 structures. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Pérez-Labrada K, Brouard I, Méndez I, Rivera DG. Multicomponent Synthesis of Ugi-Type Ceramide Analogues and Neoglycolipids from Lipidic Isocyanides. J Org Chem 2012; 77:4660-70. [DOI: 10.1021/jo300462m] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Karell Pérez-Labrada
- Institute
of Pharmacy and Food, University of Havana, San Lázaro y L, 10400,
La Habana, Cuba
- Instituto de Productos Naturales y Agrobiología-C.S.I.C., Avda. Astrofísico
Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
- Center for Natural Products Study,
Faculty of Chemistry, University of Havana, Zapata y G, 10400, La Habana, Cuba
| | - Ignacio Brouard
- Instituto de Productos Naturales y Agrobiología-C.S.I.C., Avda. Astrofísico
Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Inmaculada Méndez
- Instituto de Productos Naturales y Agrobiología-C.S.I.C., Avda. Astrofísico
Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Daniel G. Rivera
- Center for Natural Products Study,
Faculty of Chemistry, University of Havana, Zapata y G, 10400, La Habana, Cuba
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22
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Bedini E, Cirillo L, Parrilli M. Synthesis of the trisaccharide outer core fragment of Burkholderia cepacia pv. vietnamiensis lipooligosaccharide. Carbohydr Res 2012; 349:24-32. [DOI: 10.1016/j.carres.2011.12.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 11/29/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
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23
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Latxague L, Dalila MJ, Patwa A, Ziane S, Chassande O, Godeau G, Barthélémy P. Glycoside nucleoside lipids (GNLs): An intrusion into the glycolipids’ world? CR CHIM 2012. [DOI: 10.1016/j.crci.2011.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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An efficient synthesis of d-ribo-C18-phytosphingosine and l-arabino-C18-phytosphingosine from d-fructose. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Pauwels N, Aspeslagh S, Vanhoenacker G, Sandra K, Yu ED, Zajonc DM, Elewaut D, Linclau B, Van Calenbergh S. Divergent synthetic approach to 6''-modified α-GalCer analogues. Org Biomol Chem 2011; 9:8413-21. [PMID: 22042483 DOI: 10.1039/c1ob06235b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic approach is presented for the synthesis of galacturonic acid and D-fucosyl modified KRN7000. The approach allows for late-stage functionalisation of both the sugar 6''-OH and the sphingosine amino groups, which enables convenient synthesis of promising 6''-modified KRN7000 analogues.
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Affiliation(s)
- Nora Pauwels
- Laboratory for Medicinal Chemistry (FFW), Faculty of Pharmaceutical Sciences, UGent, Harelbekestraat 72, B-9000 Gent, Belgium
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26
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Zhang Z, Zhao W, Wang B, Xia C, Zhang W, Wang PG. The total synthesis of immunostimulant α-galactosylceramides from naturally configured α-galactoside raffinose. Org Lett 2011; 13:4530-3. [PMID: 21815670 PMCID: PMC3398385 DOI: 10.1021/ol201695n] [Citation(s) in RCA: 4] [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
The total synthesis of absolute anomeric confirmation α-galactosylceramide analogues from raffinose is described. Using the naturally occurring α-galactoside raffinose as the starting material, the easily maneuverable protocol without glycosylation reactions ensured the critical α-linkage in the product and simplified the synthetic procedures. The immunostimulatory activities of the new α-galactosylceramides were validated by both in vitro and in vivo NKT cell stimulation assays.
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Affiliation(s)
- Zhenxing Zhang
- College of Pharmacy, Nankai University, Tianjin 300071, China
| | - Wei Zhao
- College of Pharmacy, Nankai University, Tianjin 300071, China
| | - Bin Wang
- College of Pharmacy, Nankai University, Tianjin 300071, China
| | - Chengfeng Xia
- Departments of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Wenpeng Zhang
- Departments of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Peng George Wang
- College of Pharmacy, Nankai University, Tianjin 300071, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
- Departments of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
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27
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28
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Banchet-Cadeddu A, Hénon E, Dauchez M, Renault JH, Monneaux F, Haudrechy A. The stimulating adventure of KRN 7000. Org Biomol Chem 2011; 9:3080-104. [DOI: 10.1039/c0ob00975j] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Kumar P, Dubey A, Puranik VG. A general and concise asymmetric synthesis of sphingosine, safingol and phytosphingosines via tethered aminohydroxylation. Org Biomol Chem 2010; 8:5074-86. [PMID: 20844791 DOI: 10.1039/c0ob00117a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
A novel, practical and efficient enantioselective synthesis of sphingoid bases, l-threo-[2S,3S]-sphinganine (safingol), l-threo-[2S,3S]-sphingosine, l-arabino-[2R,3S,4R] and l-xylo-[2R,3S,4S]-C(18)-phytosphingosine is described. The synthetic strategy features the Sharpless kinetic resolution and tethered aminohydroxylation (TA) as the key steps.
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Affiliation(s)
- Pradeep Kumar
- Division of Organic Chemistry, National Chemical Laboratory, Pune 411008, India.
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30
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Trappeniers M, Chofor R, Aspeslagh S, Li Y, Linclau B, Zajonc DM, Elewaut D, Van Calenbergh S. Synthesis and evaluation of amino-modified alpha-GalCer analogues. Org Lett 2010; 12:2928-31. [PMID: 20518554 DOI: 10.1021/ol100934z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alpha-GalCer analogues featuring a phytoceramide 3- and 4-amino group have been synthesized. A Mitsunobu reaction involving phthalimide was employed for the introduction of the amino groups at the 3- and 4-positions of suitable phytosphingosine-derived precursors. The influence of these modifications on the interaction with the T-cell receptor of NKT cells was investigated, as well as the capacity of the amino-modified analogues to induce a cytokine response after in vivo administration.
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Affiliation(s)
- Matthias Trappeniers
- Laboratory for Medicinal Chemistry (FFW), Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
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31
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Chen XS, Wu YL, Chen DH. Synthesis of a New Cerebroside Isolated from Typhonium giganteum Engl. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20030210743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Khaja SD, Kumar V, Ahmad M, Xue J, Matta KL. Novel galactosyl donor with 2-naphthylmethyl (NAP) as the non participating group at C-2 position: Efficient synthesis of alpha-galactosyl ceramide. Tetrahedron Lett 2010; 51:4411-4414. [PMID: 20730042 DOI: 10.1016/j.tetlet.2010.06.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Predominant alpha-linked products can be generated in glycosylation involving galactosyl trichloroacetimidate donors with 2-naphthylmethyl (NAP) as the non participating group at C-2 position. The above donor was successfully utilized for the synthesis of alpha-galactosyl ceramide.
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Affiliation(s)
- Sirajud D Khaja
- Cancer Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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33
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Murphy N, Zhu X, Schmidt RR. α-Galactosylceramides and analogues – important immunomodulators for use as vaccine adjuvants. CARBOHYDRATE CHEMISTRY 2010. [DOI: 10.1039/9781849730891-00064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Niamh Murphy
- UCD School of Chemistry and Chemical Biology, University College Dublin Belfield, Dublin 4 Ireland
| | - Xiangming Zhu
- UCD School of Chemistry and Chemical Biology, University College Dublin Belfield, Dublin 4 Ireland
| | - Richard R. Schmidt
- Fachbereich Chemie, Universität Konstanz Fach M 725 D-78457 Konstanz Germany
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34
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Efficient synthesis of galactosylceramide analogues for iNKT cell stimulation. Bioorg Med Chem Lett 2010; 20:3859-62. [PMID: 20627566 DOI: 10.1016/j.bmcl.2010.05.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 05/07/2010] [Accepted: 05/12/2010] [Indexed: 11/24/2022]
Abstract
Glycolipids are potential antigens for iNKT cells recognition and demonstrate important roles in both innate and adaptive immunity. However, the difficulties in the preparation of pure configuration defined glycolipids limit the exploration of their different profiles in activating iNKT cells. We report here a concise and stereospecific preparation of novel galactosylceramide analogues by oxime ligation. This strategy would provide an efficient way to generate varied glycolipid analogues with either synthetic or natural carbohydrates for biological evaluations.
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35
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Black FJ, Kocienski PJ. Synthesis of phalluside-1 and Sch II using 1,2-metallate rearrangements. Org Biomol Chem 2010; 8:1188-93. [DOI: 10.1039/b920285d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Nambu H, Nakamura S, Suzuki N, Hashimoto S. Stereocontrolled Construction of 1,2-cis-α-Glycosidic Linkages Using Glycosyl Diphenyl Phosphates and Synthesis of α-Galactosylceramide KRN7000. TRENDS GLYCOSCI GLYC 2010. [DOI: 10.4052/tigg.22.26] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Veerapen N, Brigl M, Garg S, Cerundolo V, Cox LR, Brenner MB, Besra GS. Synthesis and biological activity of alpha-galactosyl ceramide KRN7000 and galactosyl (alpha1-->2) galactosyl ceramide. Bioorg Med Chem Lett 2009; 19:4288-91. [PMID: 19502056 PMCID: PMC2722241 DOI: 10.1016/j.bmcl.2009.05.095] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Revised: 05/18/2009] [Accepted: 05/20/2009] [Indexed: 11/06/2022]
Abstract
We herein report a faster and less cumbersome synthesis of the biologically attractive, alpha-galactosyl ceramide (alpha-GalCer), known as KRN7000, and its analogues. More importantly, the use of a silicon tethered intramolecular glycosylation reaction gave easy access to the diglycosyl ceramide Gal(alpha1-->2)GalCer, which has been shown to require uptake and processing to the biologically active alpha-GalCer derivative.
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Affiliation(s)
- Natacha Veerapen
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Manfred Brigl
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA
| | - Salil Garg
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA
| | - Vincenzo Cerundolo
- Tumor Immunology Group, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford OX1 3QT, UK
| | - Liam R. Cox
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Michael B. Brenner
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA
| | - Gurdyal S. Besra
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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38
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Leung L, Tomassi C, Van Beneden K, Decruy T, Trappeniers M, Elewaut D, Gao Y, Elliott T, Al-Shamkhani A, Ottensmeier C, Werner JM, Williams A, Van Calenbergh S, Linclau B. The synthesis and in vivo evaluation of 2',2'-difluoro KRN7000. ChemMedChem 2009; 4:329-34. [PMID: 19137519 DOI: 10.1002/cmdc.200800348] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The synthesis of 2',2'-difluoro KRN7000 is described. In vivo evaluation demonstrates that this fluorinated glycolipid induces CD1d-dependent TCR activation of NKT cells, with a bias towards Th2 cytokine production.
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Affiliation(s)
- Leo Leung
- School of Chemistry, University of Southampton Highfield, Southampton SO17 1BJ, UK
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39
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Garcia Diaz YR, Wojno J, Cox LR, Besra GS. Synthesis of threitol ceramide and [14C]threitol ceramide, non-glycosidic analogues of the potent CD1d antigen α-galactosyl ceramide. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Ikeda Y, Inagaki M, Yamada K, Miyamoto T, Higuchi R, Shibata O. Langmur monolayers of cerebroside with different head groups originated from sea cucumber: binary systems with dipalmitoylphosphatidylcholine (DPPC). Colloids Surf B Biointerfaces 2009; 72:272-83. [PMID: 19464155 DOI: 10.1016/j.colsurfb.2009.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2009] [Accepted: 04/19/2009] [Indexed: 11/27/2022]
Abstract
Surface properties (Langmuir monolayer) of two different cerebrosides which are extracted from the sea cucumber (Bohadschia argus) were investigated. A main difference in chemical structure of cerebroside between BAC-2a and BAC-4 is their head groups (glucose and galactose, respectively). Furthermore, miscibility and interaction between dipalmitoylphosphatidylcholine (DPPC) and cerebrosides (BAC-2a and BAC-4) in the monolayer have been systematically examined. The surface pressure (pi)-area (A), the surface potential (Delta V)-A, and the dipole moment (mu(perpendicular))-A isotherms for monolayers of DPPC, cerebrosides, and their binary combinations have been measured using the Wilhelmy method and the ionizing electrode method. BAC-4 forms a stable liquid-expanded (LE) monolayer, whereas BAC-2a has a first-order phase transition from the LE phase to the liquid-condensed (LC) state on 0.15 M NaCl at 298.2 K. The fundamental properties for each cerebroside monolayer were elucidated in terms of the surface dipole moment based on the three-layer model [R.J. Demchak, T. Fort Jr., J. Colloid Interface Sci. 46 (1974) 191-202] for both cerebrosides and the apparent molar quantity change (Delta s(gamma), Delta h(gamma), and Delta u(gamma)) for BAC-2a. In addition, their miscibility with DPPC was examined by the variation of the molecular areas and the surface potentials as a function of cerebroside mole fractions, the additivity rule. The miscibility was also confirmed by constructing the two-dimensional phase diagrams. The phase diagrams for the both binary systems were of negative azeotropic type. That is, the two-component DPPC/BAC-2a and DPPC/BAC-4 monolayers are miscible. Furthermore, the Joos equation for the analysis of the collapse pressure of binary monolayers allowed calculation of the interaction parameter and the interaction energy between the DPPC and cerebroside monolayers. The miscibility in the monolayer state was also confirmed by the morphological observation with Brewster angle microscopy (BAM), fluorescence microscopy (FM), and atomic force microscopy (AFM).
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Affiliation(s)
- Yuriko Ikeda
- Department of Biophysical Chemistry, Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki 859-3298, Japan
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41
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Reddy BG, Silk JD, Salio M, Balamurugan R, Shepherd D, Ritter G, Cerundolo V, Schmidt RR. Nonglycosidic agonists of invariant NKT cells for use as vaccine adjuvants. ChemMedChem 2009; 4:171-5. [PMID: 19160440 DOI: 10.1002/cmdc.200800354] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Based on the crystal structures of human alpha-GalCer-CD1d and iNKT-alpha-GalCer-CD1d complexes, nonglycosidic analogues of alpha-GalCer were synthesized. They activate iNKT cells resulting in dendritic cell maturation and the priming of antigen-specific T and B cells. Therefore, they are attractive adjuvants in vaccination strategies for cancer and infectious diseases.
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42
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Llaveria J, Díaz Y, Matheu MI, Castillón S. An efficient and general enantioselective synthesis of sphingosine, phythosphingosine, and 4-substituted derivatives. Org Lett 2009; 11:205-8. [PMID: 19053731 DOI: 10.1021/ol802379b] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general and efficient protocol for the enantioselective synthesis of sphingosine, phythosphingosine, and 4-substituted derivatives was established. These compounds were obtained from a common intermediate prepared from butadiene monoepoxide by a synthetic sequence involving enantioselective allylic substitution, cross-metathesis, and dihydroxylation.
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Affiliation(s)
- Josep Llaveria
- Departament de Química Analítica i Química Orgànica, Facultat de Química, Universitat Rovira i Virgili, 43007 Tarragona, Spain
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43
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Yokoyama Y, Inanaga J, Hanamoto T, Suzuki S, Furuno H, Shimizu K. Tandem Catalysis Strategy for Direct Glycosylation of 1-Hydroxy Sugars. Methoxyacetic Acid as an Effective Catalytic Mediator. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)74] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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44
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Koshiba M, Suzuki N, Arihara R, Tsuda T, Nambu H, Nakamura S, Hashimoto S. Catalytic stereoselective glycosidation with glycosyl diphenyl phosphates: rapid construction of 1,2-cis-alpha-glycosidic linkages. Chem Asian J 2008; 3:1664-77. [PMID: 18604830 DOI: 10.1002/asia.200800173] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A commercially available 0.1 M solution of HClO(4) in dioxane has been shown to catalyze the glycosidation of glycosyl diphenyl phosphates. The per-O-benzyl-protected glucosyl and galactosyl donors and the 3,4,6-tri-O-acetyl-2-azido-2-deoxygalactosyl donor each react with a range of acceptor alcohols in the presence of 0.05-0.2 equiv of HClO(4) in dioxane/Et(2)O (1:1) to afford glycosides in good yields with good to excellent alpha selectivities. The synthetic utility of this glycosidation method was demonstrated by a stereoselective synthesis of the alpha-galactosylceramide KRN7000, an activator of natural killer (NK) T cells through CD1d molecules.
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Affiliation(s)
- Miyuki Koshiba
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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45
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Dere RT, Zhu X. The First Synthesis of a Thioglycoside Analogue of the Immunostimulant KRN7000. Org Lett 2008; 10:4641-4. [DOI: 10.1021/ol8019555] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ravindra T. Dere
- Centre for Synthesis and Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Xiangming Zhu
- Centre for Synthesis and Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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Leung L, Tomassi C, Van Beneden K, Decruy T, Elewaut D, Elliott T, Al-Shamkhani A, Ottensmeier C, Van Calenbergh S, Werner J, Williams T, Linclau B. Synthesis and in vivo evaluation of 4-deoxy-4,4-difluoro-KRN7000. Org Lett 2008; 10:4433-6. [PMID: 18798635 DOI: 10.1021/ol801663m] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of 4-deoxy-4,4-difluoro-KRN7000 starting from phytosphingosine is described. Key steps include a regioselective benzylation of azidophytosphingosine and a deoxofluor-mediated fluorination of the corresponding 4-ketone. This fluorination failed completely when the adjacent 3-OH was protected as benzyl ether but proceeded well when a benzoyl group was used. The biological evaluation reveals a bias toward Th1 cytokine induction upon Natural Killer T cell activation.
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Affiliation(s)
- Leo Leung
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
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Park JJ, Lee JH, Ghosh SC, Bricard G, Venkataswamy MM, Porcelli SA, Chung SK. Synthesis of all stereoisomers of KRN7000, the CD1d-binding NKT cell ligand. Bioorg Med Chem Lett 2008; 18:3906-9. [PMID: 18586489 PMCID: PMC2754801 DOI: 10.1016/j.bmcl.2008.06.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 05/20/2008] [Accepted: 06/11/2008] [Indexed: 01/12/2023]
Abstract
KRN7000 is an important ligand identified for CD1d protein of APC, and KRN7000/CD1d complex can stimulate NKT cells to release Th1 and Th2 cytokines. In an effort to understand the structure-activity relationships, we have carried out the synthesis of a complete set of the eight KRN7000 stereoisomers, and their biological activities have been examined.
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Affiliation(s)
| | - Ji Hyung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Subhash Ch. Ghosh
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Gabriel Bricard
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx 10461, USA
| | | | - Steven A. Porcelli
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx 10461, USA
| | - Sung-Kee Chung
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
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Trappeniers M, Goormans S, Van Beneden K, Decruy T, Linclau B, Al‐Shamkhani A, Elliott T, Ottensmeier C, Werner JM, Elewaut D, Van Calenbergh S. Synthesis and in vitro Evaluation of α‐GalCer Epimers. ChemMedChem 2008; 3:1061-70. [DOI: 10.1002/cmdc.200800021] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Denkberg G, Stronge VS, Zahavi E, Pittoni P, Oren R, Shepherd D, Salio M, McCarthy C, Illarionov PA, van der Merwe A, Besra GS, Dellabona P, Casorati G, Cerundolo V, Reiter Y. Phage display-derived recombinant antibodies with TCR-like specificity against alpha-galactosylceramide and its analogues in complex with human CD1d molecules. Eur J Immunol 2008; 38:829-40. [PMID: 18253930 DOI: 10.1002/eji.200737518] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The glycolipid alpha-galactosylceramide (alpha-GalCer) is a potent activator of invariant natural killer T (iNKT) cells and has been shown to be an effective agent against cancer, infections and autoimmune diseases. The effectiveness of alpha-GalCer and its alkyl chain analogues depends on efficient loading and presentation by the antigen-presenting molecule CD1d. To monitor the ability of CD1d to present the glycolipids, we have used a phage display strategy to generate recombinant antibodies with T cell receptor-like (TCRL) specificity against the human CD1d (hCD1d)-alpha-GalCer complex. These Fab fragments were able to detect specifically hCD1d-alpha-GalCer complexes in cell-free systems such as surface plasmon resonance and ELISA, as well as on the surface of hCD1d(+) antigen-presenting cells (APC) by flow cytometry and immunofluorescence microscopy, the latter of which could also detect intracellular complexes. We show that our TCRL antibodies can stain dendritic cells from CD11c-hCD1d-transgenic mice administered in vivo with alpha-GalCer and its analogues. Furthermore, the antibody was also able to detect the presentation by hCD1d molecules of analogues of alpha-GalCer with the same polar head structure. Using this reagent, we were able to confirm directly that the alpha-GalCer analogue C20:2 preferentially loads onto cell surface CD1d rapidly without the need for internalization, while the loading of alpha-GalCer is improved with longer incubation times on professional APC. This reagent will be essential for assessing the loading and presenting capabilities of hCD1d of alpha-GalCer and its analogues.
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Affiliation(s)
- Galit Denkberg
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
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Boutureira O, Morales-Serna JA, Díaz Y, Matheu MI, Castillón S. Direct and Efficient Glycosylation Protocol for Synthesizing α-Glycolipids: Application to the Synthesis of KRN7000. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701228] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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