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Krylov VB, Kuznetsov AN, Polyanskaya AV, Tsarapaev PV, Yashunsky DV, Kushlinskii NE, Nifantiev NE. ASCA-related antibodies in the blood sera of healthy donors and patients with colorectal cancer: characterization with oligosaccharides related to Saccharomyces cerevisiae mannan. Front Mol Biosci 2023; 10:1296828. [PMID: 38146532 PMCID: PMC10749338 DOI: 10.3389/fmolb.2023.1296828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/20/2023] [Indexed: 12/27/2023] Open
Abstract
Mannans are polysaccharide antigens expressed on the cell wall of different fungal species including Saccharomyces cerevisiae and Candida spp. These fungi are components of the normal intestinal microflora, and the presence of antibodies to fungal antigens is known to reflect the features of the patient's immune system. Thus, titers of IgG and IgA antibodies against Saccharomyces cerevisiae mannan (ASCA) are markers for clinical diagnostics of inflammatory bowel diseases. The complex organization and heterogeneity of cell-wall mannans may reduce the quality and reproducibility of ELISA results due to interference by different antigenic epitopes. In this research, we analyzed the levels of IgG antibodies in the sera of healthy donors and patients with colorectal cancer using an array of synthetic oligosaccharides related to distinct fragments of fungal mannan. This study aimed to establish the influence of oligosaccharide structure on their antigenicity. Variations in the structure of the previously established ASCA epitope (changing type of linkage, chain length, and the presence of branches) significantly modified the ability of ligands to bind to circulating antibodies in blood sera. The study showed that surface presentation density of the ligand critically affects the results of enzyme immunoassay. The transition from natural coating antigens to their corresponding synthetic mimetics with a defined structure opens new opportunities for improving existing ELISA test systems, as well as developing diagnostic kits with new properties.
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Affiliation(s)
- Vadim B. Krylov
- Laboratory of Synthetic Glycovaccines, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Anton N. Kuznetsov
- Laboratory of Synthetic Glycovaccines, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Alina V. Polyanskaya
- Laboratory of Synthetic Glycovaccines, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Pavel V. Tsarapaev
- Laboratory of Synthetic Glycovaccines, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Dmitry V. Yashunsky
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Nikolay E. Kushlinskii
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Nikolay E. Nifantiev
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Solovev AS, Denisova EM, Kurbatova EA, Kutsevalova OY, Boronina LG, Ageevets VA, Sidorenko SV, Krylov VB, Nifantiev NE. Synthesis of methylphosphorylated oligomannosides structurally related to lipopolysaccharide O-antigens of Klebsiella pneumoniae serotype O3 and their application for detection of specific antibodies in rabbit and human sera. Org Biomol Chem 2023; 21:8306-8319. [PMID: 37794804 DOI: 10.1039/d3ob01203d] [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: 10/06/2023]
Abstract
Methylphosphorylated mono-, di- and trimannosides structurally related to the lipopolysaccharide (LPS) O-antigens of Klebsiella pneumoniae of serotype O3 were synthesized and conjugated with a biotin tag. The stereo- and regioselective assembly of target carbohydrate chains was conducted using uniform monosaccharide synthetic blocks. After that, a methylphosphate group was introduced by coupling with a methyl-H-phosphonate reagent followed by oxidation and deprotection to give the target oligosaccharides. The 1H and 13C NMR spectra of the obtained compounds showed a good fit with the spectrum of the corresponding natural polysaccharide. The newly prepared biotinylated oligosaccharides along with the previously reported biotinylated glycoconjugates related to galactan I and galactan II of K. pneumoniae LPS were used for the ELISA detection of antibodies in anti-K. pneumoniae rabbit sera. Anti-O3 serum antibodies specifically recognized the synthesized oligosaccharide ligands with terminal methylphosphomannosyl residues, whereas anti-O1 serum antibodies recognized the oligosaccharide related to K. pneumoniae galactan II. The analysis of human sera from patients with confirmed Klebsiella infection also revealed the presence of antibodies against the synthesized oligosaccharides in clinical cases. Thus, the described compounds together with other Klebsiella related antigenic oligosaccharides could be potentially used as molecular probes for K. pneumoniae serological diagnostics development and strain serotyping.
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Affiliation(s)
- Arsenii S Solovev
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation
| | - Evgeniya M Denisova
- Laboratory of Synthetic Glycovaccines, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation.
| | - Ekaterina A Kurbatova
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation
- Laboratory of Immunology, I. I. Mechnikov Research Institute for Vaccines and Sera, Moscow, Russia
| | - Olga Y Kutsevalova
- National Medical Research Center of Oncology, Laboratory of Clinical Microbiology, 14 Liniya Str., 63, 344037 Rostov-on-Don, Russia
| | - Liubov G Boronina
- Ural State Medical University, 3 Repina Str., 620028 Yekaterinburg, Russia
| | - Vladimir A Ageevets
- Pediatric Research and Clinical Center for Infectious Diseases, 9 Prof. Popov Street, 197022 Saint Petersburg, Russia
| | - Sergey V Sidorenko
- Pediatric Research and Clinical Center for Infectious Diseases, 9 Prof. Popov Street, 197022 Saint Petersburg, Russia
| | - Vadim B Krylov
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation
- Laboratory of Synthetic Glycovaccines, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation.
| | - Nikolay E Nifantiev
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russian Federation
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Solovev AS, Tsarapaev PV, Krylov VB, Yashunsky DV, Kushlinskii NE, Nifantiev NE. A repertoire of anti-mannan Candida albicans antibodies in the blood sera of healthy donors. Russ Chem Bull 2023. [DOI: 10.1007/s11172-023-3731-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Yashunsky DV, Dorokhova VS, Komarova BS, Paulovičová E, Krylov VB, Nifantiev NE. Synthesis of biotinylated pentasaccharide structurally related to a fragment of glucomannan from Candida utilis. Russ Chem Bull 2022; 70:2208-2213. [PMID: 35068914 PMCID: PMC8761042 DOI: 10.1007/s11172-021-3334-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/03/2022]
Abstract
The polysaccharide mannan is the main surface antigen of the cell wall of Candida fungi, playing an important role in the pathogenesis of diseases caused by these mycopathogens. Mannan has a complex, comb-like structure and includes a variety of structural units, with their combination varying depending on the Candida species and strain. Glucomannan, a polysaccharide from Candida utilis, contains terminal α-d-glucose residues attached to oligomannoside side chains. This paper describes the first synthesis of a pentasaccharide structurally related to C. utilis glucomannan fragment, which is an α-(1→2)-linked tetramannoside terminated at the non-reducing end by an α-d-glucopyranosyl residue. The pentasaccharide was obtained as a 3-aminopropyl glycoside, which made it possible to synthesize also its biotinylated derivative, suitable for various glycobiological studies. The most complicated step in the pentasaccharide synthesis was stereoselective 1,2-cis-glycosylation to attach the α-d-glucopyranosyl residue. This was accomplished using a glucosyl donor specially developed in our laboratory, the protecting groups of which provide the necessary α-stereoselectivity. The target biotinylated pentasaccharide thus obtained will be used in the future as a model antigen for the detection of immunodeterminant epitopes of Candida mannans.
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Affiliation(s)
- D. V. Yashunsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospect, 119991 Moscow, Russian Federation
| | - V. S. Dorokhova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospect, 119991 Moscow, Russian Federation
| | - B. S. Komarova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospect, 119991 Moscow, Russian Federation
| | - E. Paulovičová
- Department of Immunochemistry of Glycoconjugates, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - V. B. Krylov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospect, 119991 Moscow, Russian Federation
| | - N. E. Nifantiev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospect, 119991 Moscow, Russian Federation
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Mery A, Jawhara S, François N, Cornu M, Poissy J, Martinez-Esparza M, Poulain D, Sendid B, Guerardel Y. Identification of fungal trehalose for the diagnosis of invasive candidiasis by mass spectrometry. Biochim Biophys Acta Gen Subj 2022; 1866:130083. [PMID: 35033574 DOI: 10.1016/j.bbagen.2022.130083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/28/2021] [Accepted: 01/03/2022] [Indexed: 10/19/2022]
Abstract
The rapidity of the diagnosis of invasive candidiasis (IC) is crucial to allow the early introduction of antifungal therapy that dramatically increases the survival rate of patients. Early diagnosis is unfortunately often delayed because Candida blood culture, the gold standard diagnostic test, is positive in only 50% of cases of IC and takes several days to obtain this result. Complementary non-culture-based methods relying on the detection of Candida cell wall polysaccharides in the serum, β-glucans and mannans, by enzymatic and immunological reagents have been successfully developed to allow a more efficient patients care. We have previously demonstrated that detection of circulating glycans by mass spectrometry could provide a reliable and cost-effective early diagnosis method called MS-DS for Mass Spectrometry of Di-Saccharide. Here, by comparing patient's sera and Candida albicans strains deficient in carbohydrates synthesis, we demonstrate that trehalose derived from fungal metabolism can be specifically targeted by MS-DS to allow early diagnosis. In particular, the use of C. albicans strains deficient in the synthesis of trehalose synthesizing enzymes Tps1 and Tps2 show that MS-DS results were correlated to the metabolism of trehalose. Finally, we demonstrate that the performance of the IC diagnosis can be significantly improved by using high resolution mass spectrometry, which opens new perspectives in the management of the disease.
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Affiliation(s)
- Alexandre Mery
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Samir Jawhara
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Laboratoire de Parasitologie-Mycologie, Lille, France
| | - Nadine François
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Laboratoire de Parasitologie-Mycologie, Lille, France
| | - Marjorie Cornu
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Laboratoire de Parasitologie-Mycologie, Lille, France
| | - Julien Poissy
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Pôle de réanimation, Lille, France
| | - Maria Martinez-Esparza
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Daniel Poulain
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Laboratoire de Parasitologie-Mycologie, Lille, France
| | - Boualem Sendid
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Univ. Lille, Inserm U1285, CHU Lille, Laboratoire de Parasitologie-Mycologie, Lille, France
| | - Yann Guerardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France; Institute for Glyco-core Research (iGCORE), Gifu University, Gifu, Japan.
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