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Reijneveld JF, Marino L, Cao TP, Cheng TY, Dam D, Shahine A, Witte MD, Filippov DV, Suliman S, van der Marel GA, Moody DB, Minnaard AJ, Rossjohn J, Codée JDC, Van Rhijn I. Rational design of a hydrolysis-resistant mycobacterial phosphoglycolipid antigen presented by CD1c to T cells. J Biol Chem 2021; 297:101197. [PMID: 34536421 PMCID: PMC8511953 DOI: 10.1016/j.jbc.2021.101197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/20/2021] [Accepted: 08/30/2021] [Indexed: 11/25/2022] Open
Abstract
Whereas proteolytic cleavage is crucial for peptide presentation by classical major histocompatibility complex (MHC) proteins to T cells, glycolipids presented by CD1 molecules are typically presented in an unmodified form. However, the mycobacterial lipid antigen mannosyl-β1-phosphomycoketide (MPM) may be processed through hydrolysis in antigen presenting cells, forming mannose and phosphomycoketide (PM). To further test the hypothesis that some lipid antigens are processed, and to generate antigens that lead to defined epitopes for future tuberculosis vaccines or diagnostic tests, we aimed to create hydrolysis-resistant MPM variants that retain their antigenicity. Here, we designed and tested three different, versatile synthetic strategies to chemically stabilize MPM analogs. Crystallographic studies of CD1c complexes with these three new MPM analogs showed anchoring of the lipid tail and phosphate group that is highly comparable to nature-identical MPM, with considerable conformational flexibility for the mannose head group. MPM-3, a difluoromethylene-modified version of MPM that is resistant to hydrolysis, showed altered recognition by cells, but not by CD1c proteins, supporting the cellular antigen processing hypothesis. Furthermore, the synthetic analogs elicited T cell responses that were cross-reactive with nature-identical MPM, fulfilling important requirements for future clinical use.
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Affiliation(s)
- Josephine F Reijneveld
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA; Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands; Stratingh Institute for Chemistry, University of Groningen, Groningen, the Netherlands
| | - Laura Marino
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, the Netherlands
| | - Thinh-Phat Cao
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Tan-Yun Cheng
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Dennis Dam
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, the Netherlands
| | - Adam Shahine
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria, Australia
| | - Martin D Witte
- Stratingh Institute for Chemistry, University of Groningen, Groningen, the Netherlands
| | - Dmitri V Filippov
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, the Netherlands
| | - Sara Suliman
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Gijsbert A van der Marel
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, the Netherlands
| | - D Branch Moody
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Adriaan J Minnaard
- Stratingh Institute for Chemistry, University of Groningen, Groningen, the Netherlands
| | - Jamie Rossjohn
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria, Australia; Institute of Infection and Immunity, Cardiff University, School of Medicine, Cardiff, United Kingdom
| | - Jeroen D C Codée
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, the Netherlands.
| | - Ildiko Van Rhijn
- Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA; Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands.
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Lu YJ, Lai YH, Lin YY, Wang YC, Liang PH. 2- O- N-Benzylcarbamoyl as a Protecting Group To Promote β-Selective Glycosylation and Its Applications in the Stereoselective Synthesis of Oligosaccharides. J Org Chem 2018; 83:3688-3701. [PMID: 29512381 DOI: 10.1021/acs.joc.8b00047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study examines the utility of the N-benzylcarbamoyl (BnCar) protecting group in glycosylation reactions of the parent O-2 protected carbohydrate donor. It was found that the BnCar group imparted exclusively β-selectivity with primary and secondary alcohols. A mechanistic study revealed the activated intermediate to be the glycosyl triflate in a skew conformation, which results in β-selective glycosylation via an SN2-like pathway. The BnCar group can be readily cleaved using tetrabutylammonium nitrite, without affecting ester and ether protecting groups. Taken together, these results show BnCar to be useful for the synthesis of complex oligosaccharides, an undertaking that requires delicate chemical differentiation of various protecting groups.
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Affiliation(s)
- Yin-Jen Lu
- School of Pharmacy, College of Medicine , National Taiwan University , Taipei 100 , Taiwan
| | - Yen-Hsun Lai
- School of Pharmacy, College of Medicine , National Taiwan University , Taipei 100 , Taiwan
| | - You-Yu Lin
- School of Pharmacy, College of Medicine , National Taiwan University , Taipei 100 , Taiwan
| | - Yi-Chi Wang
- School of Pharmacy, College of Medicine , National Taiwan University , Taipei 100 , Taiwan
| | - Pi-Hui Liang
- School of Pharmacy, College of Medicine , National Taiwan University , Taipei 100 , Taiwan
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3
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Joosten A, Boultadakis-Arapinis M, Gandon V, Micouin L, Lecourt T. Substitution of the Participating Group of Glycosyl Donors by a Halogen Atom: Influence on the Rearrangement of Transient Orthoesters Formed during Glycosylation Reactions. J Org Chem 2017; 82:3291-3297. [DOI: 10.1021/acs.joc.6b03088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antoine Joosten
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | | | - Vincent Gandon
- Institut de Chimie
Moléculaire et des Matériaux d’Orsay, CNRS UMR
8182, Univ. Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Laurent Micouin
- Université Paris Descartes, Sorbonne Paris Cité, CNRS (UMR
8601), 75006 Paris, France
| | - Thomas Lecourt
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
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