1
|
van de Put B, de Bruijn WJ, Schols HA. Structural Characterization of Disaccharides Using Cyclic Ion Mobility Spectrometry and Monosaccharide Standards. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1012-1020. [PMID: 38634722 PMCID: PMC11066964 DOI: 10.1021/jasms.4c00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/19/2024]
Abstract
To understand the mode of action of bioactive oligosaccharides, such as prebiotics, in-depth knowledge about all structural features, including monosaccharide composition, linkage type, and anomeric configuration, is necessary. Current analytical techniques provide limited information about structural features within complex mixtures unless preceded by extensive purification. In this study, we propose an approach employing cyclic ion mobility spectrometry (cIMS) for the in-depth characterization of oligosaccharides, here demonstrated for disaccharides. We were able to separate galactose and glucose anomers by exploiting the high ion mobility resolution of cIMS. Using the obtained monosaccharide mobilograms as references, we determined the composition and anomeric configuration of 4β-galactobiose by studying the monosaccharide fragments generated by collision-induced dissociation (CID) before the ion mobility separation. Drift times and individual MS2 spectra of partially resolved reducing-end anomers of 4β-galactobiose, 4β-galactosylglucose (lactose), and 4β-glucosylglucose (cellobiose) were obtained by deconvolution using CID fragmentation induced in the transfer region between the cIMS cell and TOF analyzer. The composition and anomeric configuration of the reducing end anomers of these disaccharides were identified using cIMS2 approaches, where first each anomer was isolated using cIMS and individually fragmented, and the monosaccharide fragments were again separated by cIMS for comparison with monosaccharide standards. With these results we demonstrate the promising application of cIMS for the structural characterization of isomeric oligosaccharides.
Collapse
Affiliation(s)
- Bram van de Put
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708, WG Wageningen, The Netherlands
| | - Wouter J.C. de Bruijn
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708, WG Wageningen, The Netherlands
| | - Henk A. Schols
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708, WG Wageningen, The Netherlands
| |
Collapse
|
2
|
Ravikumaran KS, Armiento S, De Castro C, Molinaro A, Wilson JC, Grice ID, Peak IR. Characterisation of a capsular polysaccharide from Moraxella nonliquefaciens CCUG 348T. Carbohydr Res 2024; 538:109095. [PMID: 38507941 DOI: 10.1016/j.carres.2024.109095] [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: 12/15/2023] [Revised: 02/22/2024] [Accepted: 03/14/2024] [Indexed: 03/22/2024]
Abstract
Moraxella nonliquefaciens is a commensal of the human upper respiratory tract (URT) but on rare occasions is recovered in cases of ocular, septic and pulmonary infections. Hence there is interest in the pathogenic determinants of M. nonliquefaciens, of which outer membrane (OM) structures such as fimbriae and two capsular polysaccharide (CPS) structures, →3)-β-D-GalpNAc-(1→5)-β-Kdop-(2→ and →8)-α-NeuAc-(2→, have been reported in the literature. To further characterise its surface virulence factors, we isolated a novel CPS from M. nonliquefaciens type strain CCUG 348T. This structure was elucidated using NMR data obtained from CPS samples that were subjected to various degrees of mild acid hydrolysis. Together with GLC-MS data, the structure was resolved as a linear polymer composed of two GalfNAc residues consecutively added to Kdo, →3)-β-D-GalfNAc-(1→3)-α-D-GalfNAc-(1→5)-α-(8-OAc)Kdop-(2→. Supporting evidence for this material being CPS was drawn from the proposed CPS biosynthetic locus which encoded a potential GalfNAc transferase, a UDP-GalpNAc mutase for UDP-GalfNAc production and a putative CPS polymerase with predicted GalfNAc and Kdo transferase domains. This study describes a unique CPS composition reported in Moraxella spp. and offers genetic insights into the synthesis and expression of GalfNAc residues, which are rare in bacterial OM glycans.
Collapse
Affiliation(s)
- Kosala S Ravikumaran
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Samantha Armiento
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Cristina De Castro
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Antonio Molinaro
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Jennifer C Wilson
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - I Darren Grice
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia.
| | - Ian R Peak
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia.
| |
Collapse
|
3
|
Ravikumaran KS, King RM, Notaro A, Molinaro A, de Castro C, Wilson JC, Grice ID, Peak IR. Moraxella ovis and Moraxella bovoculi lipooligosaccharide biosynthesis genes, and structural characterisation of oligosaccharide from M. ovis 354T. Carbohydr Res 2024; 536:109043. [PMID: 38281396 DOI: 10.1016/j.carres.2024.109043] [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: 12/12/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 01/30/2024]
Abstract
Moraxella ovis is a Gram-negative bacterium isolated from sheep conjunctivitis cases and is a rare isolate of infectious bovine keratoconjunctivitis (IBK). This species is closely related to M. bovoculi, another species which can also be isolated from IBK, or cattle upper respiratory tract (URT). Prior to molecular identification techniques, M. bovoculi was frequently misclassified as M. ovis. We previously described the structure of two oligosaccharides (lipooligosaccharide-derived, minor and major glycoforms) from M. bovoculi 237T (type strain, also ATCC BAA-1259T). Here, we have identified the genetic loci for lipooligosaccharide synthesis in M. ovis 354T (NCTC11227) and compared it with M. bovoculi 237T. We identified genes encoding the known glycosyltransferases Lgt6 and Lgt3 in M.ovis. These genes are conserved in Moraxella spp., including M bovoculi. We identified three further putative OS biosynthesis genes that are restricted to M. ovis and M. bovoculi. These encode enzymes predicted to function as GDP-mannose synthases, namely a mannosyltransferase and a glycosyltransferase. Adding insight into the genetic relatedness of M.ovis and M. bovoculi, the M. ovis genes have higher similarity to those in M. bovoculi genotype 2 (nasopharyngeal isolates from asymptomatic cattle), than to M. bovoculi genotype 1 (isolates from eyes of IBK-affected cattle). Sequence analysis confirmed that the predicted mannosyltransferase in M. bovoculi 237T is interrupted by a C>T polymorphism. This mutation is not present in other M. bovoculi strains sequenced to date. We isolated and characterised LOS-derived oligosaccharide from M. ovis 354T. GLC-MS and NMR spectroscopy data revealed a heptasaccharide structure with three β-D-Glcp residues attached as branches to the central 3,4,6-α-D-Glcp, with subsequent attachment to Kdo. This inner core arrangement is consistent with the action of Lgt6 and Lgt3 glycosyltransferases. Two α-D-Manp residues are linearly attached to the 4-linked β-D-Glcp, consistent with the presence of the two identified glycosyltransferases. This oligosaccharide structure is consistent with the previously reported minor glycoform isolated from M. bovoculi 237T.
Collapse
Affiliation(s)
- Kosala S Ravikumaran
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Rebecca M King
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Anna Notaro
- Dipartmento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Antonio Molinaro
- Dipartmento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Cristina de Castro
- Dipartmento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Jennifer C Wilson
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - I Darren Grice
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia.
| | - Ian R Peak
- School of Pharmacy and Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia.
| |
Collapse
|
4
|
Di Lorenzo F, Duda KA, Lanzetta R, Silipo A, De Castro C, Molinaro A. A Journey from Structure to Function of Bacterial Lipopolysaccharides. Chem Rev 2021; 122:15767-15821. [PMID: 34286971 DOI: 10.1021/acs.chemrev.0c01321] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Lipopolysaccharide (LPS) is a crucial constituent of the outer membrane of most Gram-negative bacteria, playing a fundamental role in the protection of bacteria from environmental stress factors, in drug resistance, in pathogenesis, and in symbiosis. During the last decades, LPS has been thoroughly dissected, and massive information on this fascinating biomolecule is now available. In this Review, we will give the reader a third millennium update of the current knowledge of LPS with key information on the inherent peculiar carbohydrate chemistry due to often puzzling sugar residues that are uniquely found on it. Then, we will drive the reader through the complex and multifarious immunological outcomes that any given LPS can raise, which is strictly dependent on its chemical structure. Further, we will argue about issues that still remain unresolved and that would represent the immediate future of LPS research. It is critical to address these points to complete our notions on LPS chemistry, functions, and roles, in turn leading to innovative ways to manipulate the processes involving such a still controversial and intriguing biomolecule.
Collapse
Affiliation(s)
- Flaviana Di Lorenzo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Katarzyna A Duda
- Research Center Borstel Leibniz Lung Center, Parkallee 4a, 23845 Borstel, Germany
| | - Rosa Lanzetta
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Cristina De Castro
- Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Department of Agricultural Sciences, University of Naples Federico II, Via Università 96, 80055 Portici, Naples, Italy
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Department of Chemistry, School of Science, Osaka University, 1-1 Osaka University Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| |
Collapse
|
5
|
Loy JD, Hille M, Maier G, Clawson ML. Component Causes of Infectious Bovine Keratoconjunctivitis - The Role of Moraxella Species in the Epidemiology of Infectious Bovine Keratoconjunctivitis. Vet Clin North Am Food Anim Pract 2021; 37:279-293. [PMID: 34049659 DOI: 10.1016/j.cvfa.2021.03.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Infectious bovine keratoconjunctivitis (IBK) involves multiple factors and opportunistic pathogens, including members of the genus Moraxella, specifically M bovis. The causal role of M bovis is clear, where the presence of virulence factors that facilitate colonization (pili) and host cytotoxicity (RTX toxins) are well characterized, and IBK has been reproduced in many models. Experimental infection with M bovoculi has failed to reproduce IBK-typical lesions in cattle thus far. However, recent work using genomics and mass spectrometry have found genomic diversity and recombination within these species, making species differentiation complex and challenging the ability to assign IBK causality to these organisms.
Collapse
Affiliation(s)
- John Dustin Loy
- Nebraska Veterinary Diagnostic Center, School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 4040 East Campus Loop North 115Q NVDC, Lincoln, NE 68583-0907, USA.
| | - Matthew Hille
- Nebraska Veterinary Diagnostic Center, School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 4040 East Campus Loop North 115Q NVDC, Lincoln, NE 68583-0907, USA
| | - Gabriele Maier
- Department of Population Health & Reproduction, School of Veterinary Medicine, University of California Davis, 1 Shields Avenue, VM3B, Davis, CA 95616, USA
| | - Michael L Clawson
- US Meat Animal Research Center, USDA Agriculture Research Service, Clay Center, 844 Road 313, Clay Center, NE 68933, USA
| |
Collapse
|
6
|
Grice ID, Peak IR, Dawood WA, King RM, Ravikumaran KS, Speciale I, Molinaro A, de Castro C, Wilson JC. Structural characterisation of the oligosaccharide from Moraxella bovoculi type strain 237 (ATCC BAA-1259) lipooligosaccharide. Carbohydr Res 2021; 503:108293. [PMID: 33839496 DOI: 10.1016/j.carres.2021.108293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 11/16/2022]
Abstract
The Gram-negative bacterium Moraxella bovoculi is associated with infectious bovine keratoconjunctivitis (IBK), colloquially known as 'pink-eye'. IBK is an extremely contagious ocular disease of cattle. We report here the structure of the oligosaccharide derived from the lipooligosaccharide from M. bovoculi type strain 237 (also known as ATCC BAA-1259T). GLC-MS and correlation NMR analysis of the oligosaccharide revealed 5 sugar residues, with a notable central branched 3,4,6-α-D-Glcp. An additional α-D-Manp was present ~30% on the sub-terminal α-D-Manp of the 4-linked branch. This oligosaccharide structure was consistent with other members of the Moraxellaceae where no heptose was present and 5-linked Kdo was directly attached to the central 3,4,6-α-D-Glcp.
Collapse
Affiliation(s)
- I Darren Grice
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Ian R Peak
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia; School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Wisam A Dawood
- School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Rebecca M King
- School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Kosala S Ravikumaran
- School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia
| | - Immacolata Speciale
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Cristina de Castro
- Department of Agricultural Sciences, University of Naples Federico II, Via Università, 100, 80055, Portici, Italy
| | - Jennifer C Wilson
- School of Medical Science, Griffith University, Gold Coast Campus, Queensland, 4222, Australia.
| |
Collapse
|
7
|
Singh S, Grice ID, Peak IR, Frost T, Yue G, Wilson JC. The role of lipooligosaccharide in the biological activity of Moraxella bovis strains Epp63, Mb25 and L183/2, and isolation of capsular polysaccharide from L183/2. Carbohydr Res 2018; 467:1-7. [DOI: 10.1016/j.carres.2018.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/03/2018] [Accepted: 07/04/2018] [Indexed: 11/26/2022]
|
8
|
Identification and characterisation of a biosynthetic locus for Moraxella bovis lipo-oligosaccharide. Carbohydr Res 2016; 421:9-16. [DOI: 10.1016/j.carres.2015.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/13/2015] [Accepted: 12/03/2015] [Indexed: 01/10/2023]
|