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Zhou S, Wang L, Song W, Xia Y, Shao L, Liang X. A novel allele of FUT2 gene containing a deletion of nine bases (c.461_469delGGACCTTCT) in a Chinese Han blood donor. Vox Sang 2023; 118:988-992. [PMID: 37800389 DOI: 10.1111/vox.13528] [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: 06/18/2023] [Revised: 08/08/2023] [Accepted: 08/22/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND AND OBJECTIVES The FUT2 gene is responsible for the synthesis of the H antigen in body secretions. It is highly polymorphic and population specific. We investigated the FUT2 gene polymorphism in Chinese blood donors and found a novel deletion mutation in one non-secretor individual. This study aimed to identify mutation(s) responsible for a non-secretor phenotype. MATERIALS AND METHODS The Lewis blood group of a Chinese Han blood donor was typed using the standard serological technique and the FUT2 gene of the sample was analysed by Sanger sequencing. Clone sequencing was performed for determining the haplotype of the FUT2 gene. Bioinformatics tools were used for predicting the effect of the deletion on the FUT2 gene. RESULTS A novel nine-base deletion (c.461_469delGGACCTTCT) in the FUT2 gene was identified in a Chinese Han blood donor. Two haplotypes Se390,418 and se204,249,461_469del,772,993 were determined by clone sequencing. According to the prediction of bioinformatics tools, the mutation at c.461_469delGGACCTTCT might not influence the activity of the Se enzyme. CONCLUSION We identified a new FUT2 mutation, the deletion of nine bases (c.461_469delGGACCTTCT), in a Chinese Han blood donor. This deletion was reported for the first time.
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Affiliation(s)
| | - Liying Wang
- College of Laboratory Medicine, Dalian Medical University, Dalian, China
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2
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Raev SA, Raque M, Kick MK, Saif LJ, Vlasova AN. Differential transcriptome response following infection of porcine ileal enteroids with species A and C rotaviruses. Virol J 2023; 20:238. [PMID: 37848925 PMCID: PMC10580564 DOI: 10.1186/s12985-023-02207-8] [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: 08/28/2023] [Accepted: 10/06/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND Rotavirus C (RVC) is the major causative agent of acute gastroenteritis in suckling piglets, while most RVAs mostly affect weaned animals. Besides, while most RVA strains can be propagated in MA-104 and other continuous cell lines, attempts to isolate and culture RVC strains remain largely unsuccessful. The host factors associated with these unique RVC characteristics remain unknown. METHODS In this study, we have comparatively evaluated transcriptome responses of porcine ileal enteroids infected with RVC G1P[1] and two RVA strains (G9P[13] and G5P[7]) with a focus on innate immunity and virus-host receptor interactions. RESULTS The analysis of differentially expressed genes regulating antiviral immune response indicated that in contrast to RVA, RVC infection resulted in robust upregulation of expression of the genes encoding pattern recognition receptors including RIG1-like receptors and melanoma differentiation-associated gene-5. RVC infection was associated with a prominent upregulation of the most of glycosyltransferase-encoding genes except for the sialyltransferase-encoding genes which were downregulated similar to the effects observed for G9P[13]. CONCLUSIONS Our results provide novel data highlighting the unique aspects of the RVC-associated host cellular signalling and suggest that increased upregulation of the key antiviral factors maybe one of the mechanisms responsible for RVC age-specific characteristics and its inability to replicate in most cell cultures.
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Affiliation(s)
- Sergei A Raev
- Center for Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, 44677, USA.
| | - Molly Raque
- Center for Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, 44677, USA
| | - Maryssa K Kick
- Center for Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, 44677, USA
| | - Linda J Saif
- Center for Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, 44677, USA
| | - Anastasia N Vlasova
- Center for Food Animal Health Research Program, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, 44677, USA.
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3
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Ikegaya M, Park EY, Miyazaki T. Structure-function analysis of bacterial GH31 α-galactosidases specific for α-(1→4)-galactobiose. FEBS J 2023; 290:4984-4998. [PMID: 37438884 DOI: 10.1111/febs.16904] [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: 05/16/2023] [Revised: 06/21/2023] [Accepted: 07/10/2023] [Indexed: 07/14/2023]
Abstract
Glycoside hydrolase family 31 (GH31) contains α-glycoside hydrolases with different substrate specificities involved in various physiological functions. This family has recently been classified into 20 subfamilies using sequence similarity networks. An α-galactosidase from the gut bacterium Bacteroides salyersiae (BsGH31_19, which belongs to GH31 subfamily 19) was reported to have hydrolytic activity against the synthetic substrate p- nitrophenyl α-galactopyranoside, but its natural substrate remained unknown. BsGH31_19 shares low sequence identity (around 20%) with other reported GH31 α-galactosidases, PsGal31A from Pseudopedobacter saltans and human myogenesis-regulating glycosidase (MYORG), and was expected to have distinct specificity. Here, we characterized BsGH31_19 and its ortholog from a soil Bacteroidota bacterium, Flavihumibacter petaseus (FpGH31_19), and demonstrated that they showed high substrate specificity against α-(1→4)-linkages in α-(1→4)-galactobiose and globotriose [α-Gal-(1→4)-β-Gal-(1→4)-Glc], unlike PsGal31A and MYORG. The crystallographic analyses of BsGH31_19 and FpGH31_19 showed that their overall structures resemble those of MYORG and form a dimer with an interface different from that of PsGal31A and MYORG dimers. The structures of FpGH31_19 complexed with d-galactose and α-(1→4)-galactobiose revealed that amino acid residues that recognize a galactose residue at subsite +1 are not conserved between FpGH31_19 and BsGH31_19. The tryptophan (Trp153) that recognizes galactose at subsite -1 is homologous to the tryptophan residues in MYORG and α-galactosidases belonging to GH27, GH36, and GH97, but not in the bacterial GH31 member PsGal31A. Our results provide structural insights into molecular diversity and evolutionary relationships in the GH31 α-galactosidase subfamilies and the other α-galactosidase families.
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Affiliation(s)
- Marina Ikegaya
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Japan
| | - Enoch Y Park
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Japan
- Research Institute of Green Science and Technology, Shizuoka University, Japan
| | - Takatsugu Miyazaki
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, Japan
- Research Institute of Green Science and Technology, Shizuoka University, Japan
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4
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Soejima M, Koda Y. Detection of c.375A>G, c.385A>T, c.571C>T, and sedel2 of FUT2 via Real-Time PCR in a Single Tube. Diagnostics (Basel) 2023; 13:2022. [PMID: 37370917 DOI: 10.3390/diagnostics13122022] [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: 04/17/2023] [Revised: 06/01/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
α(1,2)fucosyltransferase (Se enzyme) encoded by FUT2 is involved in the secretor status of ABH(O) blood group antigens. The sedel2 allele is one of the non-functional FUT2 (se) alleles in which 9.3 kb, containing the entire coding region of FUT2, is deleted by Alu-mediated nonhomologous recombination. In addition to this allele, three SNPs of FUT2, c.375A>G, c.385A>T, and c.571C>T, appear to be prevalent in certain Oceanian populations such as Polynesians. Recently, we developed an endpoint genotyping assay to determine sedel2 zygosity, using a FAM-labeled probe for detection of the sedel2 allele and a VIC-labeled probe for the detection of FUT2. In this study, instead of the VIC probe, a HEX-labeled probe covering both c.375A>G and c.385A>T and a Cy5-labeled probe covering c.571C>T were added to the sedel2 allele assay mixture to allow for the simultaneous detection of these four variations via endpoint genotyping for sedel2 zygosity and fluorescence melting curve analysis for c.375A>G, c.385A>T, and c.571C>T genotyping. The results obtained from 24 Samoan subjects using this method were identical to those obtained using previous methods. Therefore, it appears that the present method can accurately determine these four variations simultaneously.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan
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5
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Estimation of Lewis Blood Group Status by Fluorescence Melting Curve Analysis in Simultaneous Genotyping of c.385A>T and Fusion Gene in FUT2 and c.59T>G and c.314C>T in FUT3. Diagnostics (Basel) 2023; 13:diagnostics13050931. [PMID: 36900072 PMCID: PMC10000471 DOI: 10.3390/diagnostics13050931] [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: 01/28/2023] [Revised: 02/15/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Lewis blood group status is determined by two fucosyltransferase activities: those of FUT2-encoded fucosyltransferase (Se enzyme) and FUT3-encoded fucosyltransferase (Le enzyme). In Japanese populations, c.385A>T in FUT2 and a fusion gene between FUT2 and its pseudogene SEC1P are the cause of most Se enzyme-deficient alleles (Sew and sefus), and c.59T>G and c.314C>T in FUT3 are tag SNPs for almost all nonfunctional FUT3 alleles (le59, le59,508, le59,1067, and le202,314). In this study, we first conducted a single-probe fluorescence melting curve analysis (FMCA) to determine c.385A>T and sefus using a pair of primers that collectively amplify FUT2, sefus, and SEC1P. Then, to estimate Lewis blood group status, a triplex FMCA was performed with a c.385A>T and sefus assay system by adding primers and probes to detect c.59T>G and c.314C>T in FUT3. We also validated these methods by analyzing the genotypes of 96 selected Japanese people whose FUT2 and FUT3 genotypes were already determined. The single-probe FMCA was able to identify six genotype combinations: 385A/A, 385T/T, sefus/sefus, 385A/T, 385A/sefus, and 385T/sefus. In addition, the triplex FMCA successfully identified both FUT2 and FUT3 genotypes, although the resolutions of the analysis of c.385A>T and sefus were somewhat reduced compared to that of the analysis of FUT2 alone. The estimation of the secretor status and Lewis blood group status using the form of FMCA used in this study may be useful for large-scale association studies in Japanese populations.
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Characterization of Sialic Acid-Independent Simian Rotavirus Mutants in Viral Infection and Pathogenesis. J Virol 2023; 97:e0139722. [PMID: 36602365 PMCID: PMC9888295 DOI: 10.1128/jvi.01397-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Rotaviruses (RVs) are nonenveloped viruses that cause gastroenteritis in infants and young children. Sialic acid is an initial receptor, especially for animal RVs, including rhesus RV. Sialic acid binds to the VP8* subunit, a part of the outer capsid protein VP4 of RV. Although interactions between virus and glycan receptors influence tissue and host tropism and viral pathogenicity, research has long been limited to biochemical and structural studies due to the unavailability of an RV reverse genetics system. Here, we examined the importance of sialic acid in RV infections using recombinant RVs harboring mutations in sialic acid-binding sites in VP4 via a simian RV strain SA11-based reverse genetics system. RV VP4 mutants that could not bind to sialic acid had replicated to decreased viral titer in MA104 cells. Wild-type virus infectivity was reduced, while that of VP4 mutants was not affected in sialic acid-deficient cells. Unexpectedly, in vivo experiments demonstrated that VP4 mutants suppressed mouse pups' weight gain and exacerbated diarrhea symptoms compared to wild-type viruses. Intestinal contents enhanced VP4 mutants' infectivity. Thus, possibly via interactions with other unknown receptors and/or intestinal contents, VP4 mutants are more likely than wild-type viruses to proliferate in the murine intestine, causing diarrhea and weight loss. These results suggest that RVs binding sialic acid notably affect viral infection in vitro and viral pathogenesis in vivo. IMPORTANCE Various studies have been conducted on the binding of VP8* and glycans, and the direct interaction between purified VP8* and glycans has been investigated by crystalline structure analyses. Here, we used a reverse genetics system to generate rotaviruses (RVs) with various VP4 mutants. The generated mutant strains clarified the importance of glycan binding in vitro and in vivo. Moreover, even when VP4 mutants could not bind to sialic acid, they were able to bind to an unknown receptor. As RVs evolve, pathogenicity can also be modified by easily altering the glycans to which VP4 binds.
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Jajosky RP, Wu SC, Zheng L, Jajosky AN, Jajosky PG, Josephson CD, Hollenhorst MA, Sackstein R, Cummings RD, Arthur CM, Stowell SR. ABO blood group antigens and differential glycan expression: Perspective on the evolution of common human enzyme deficiencies. iScience 2023; 26:105798. [PMID: 36691627 PMCID: PMC9860303 DOI: 10.1016/j.isci.2022.105798] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Enzymes catalyze biochemical reactions and play critical roles in human health and disease. Enzyme variants and deficiencies can lead to variable expression of glycans, which can affect physiology, influence predilection for disease, and/or directly contribute to disease pathogenesis. Although certain well-characterized enzyme deficiencies result in overt disease, some of the most common enzyme deficiencies in humans form the basis of blood groups. These carbohydrate blood groups impact fundamental areas of clinical medicine, including the risk of infection and severity of infectious disease, bleeding risk, transfusion medicine, and tissue/organ transplantation. In this review, we examine the enzymes responsible for carbohydrate-based blood group antigen biosynthesis and their expression within the human population. We also consider the evolutionary selective pressures, e.g. malaria, that may account for the variation in carbohydrate structures and the implications of this biology for human disease.
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Affiliation(s)
- Ryan Philip Jajosky
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
- Biconcavity Inc, Lilburn, GA, USA
| | - Shang-Chuen Wu
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Leon Zheng
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Audrey N. Jajosky
- University of Rochester Medical Center, Department of Pathology and Laboratory Medicine, West Henrietta, NY, USA
| | | | - Cassandra D. Josephson
- Cancer and Blood Disorders Institute and Blood Bank/Transfusion Medicine Division, Johns Hopkins All Children’s Hospital, St. Petersburg, FL, USA
- Departments of Oncology and Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Marie A. Hollenhorst
- Department of Pathology and Department of Medicine, Stanford University, Stanford, CA, USA
| | - Robert Sackstein
- Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Richard D. Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Connie M. Arthur
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Sean R. Stowell
- Joint Program in Transfusion Medicine, Brigham and Women’s Hospital, Harvard Medical School, 630E New Research Building, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
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Bakunina I, Imbs T, Likhatskaya G, Grigorchuk V, Zueva A, Malyarenko O, Ermakova S. Effect of Phlorotannins from Brown Algae Costaria costata on α- N-Acetylgalactosaminidase Produced by Duodenal Adenocarcinoma and Melanoma Cells. Mar Drugs 2022; 21:33. [PMID: 36662206 PMCID: PMC9860849 DOI: 10.3390/md21010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
The inhibitor of human α-N-acetylgalactosaminidase (α-NaGalase) was isolated from a water-ethanol extract of the brown algae Costaria costata. Currently, tumor α-NaGalase is considered to be a therapeutic target in the treatment of cancer. According to NMR spectroscopy and mass spectrometric analysis, it is a high-molecular-weight fraction of phlorethols with a degree of polymerization (DP) equaling 11-23 phloroglucinols (CcPh). It was shown that CcPh is a direct inhibitor of α-NaGalases isolated from HuTu 80 and SK-MEL-28 cells (IC50 0.14 ± 0.008 and 0.12 ± 0.004 mg/mL, respectively) and reduces the activity of this enzyme in HuTu 80 and SK-MEL-28 cells up to 50% at concentrations of 15.2 ± 9.5 and 5.7 ± 1.6 μg/mL, respectively. Molecular docking of the putative DP-15 oligophlorethol (P15OPh) and heptaphlorethol (PHPh) with human α-NaGalase (PDB ID 4DO4) showed that this compound forms a complex and interacts directly with the Asp 156 and Asp 217 catalytic residues of the enzyme in question. Thus, brown algae phlorethol CcPh is an effective marine-based natural inhibitor of the α-NaGalase of cancer cells and, therefore, has high therapeutic potential.
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Affiliation(s)
- Irina Bakunina
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Tatiana Imbs
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Galina Likhatskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Valeria Grigorchuk
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Anastasya Zueva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Olesya Malyarenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
| | - Svetlana Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 Pr-t 100-let Vladivostoka Str., 690022 Vladivostok, Russia
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Single-cell variations in the expression of codominant alleles A and B on RBC of AB blood group individuals. J Genet 2022. [DOI: 10.1007/s12041-022-01376-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Ren X, Saleem W, Haes R, Xie J, Theuns S, Nauwynck HJ. Milk lactose protects against porcine group A rotavirus infection. Front Microbiol 2022; 13:989242. [PMID: 36060735 PMCID: PMC9428151 DOI: 10.3389/fmicb.2022.989242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
Rotavirus A (RVA) is an important pathogen causing acute gastroenteritis in animals and humans. Attachment to the host receptor is a crucial step for virus replication. The VP8* domain is the distal terminal region of the RVA spike protein VP4 (expressed by the P gene) and is important for rotavirus binding and infectivity. Recent studies have indicated a role for non-sialylated glycans, including mucin core 2 and histo-blood group antigens (HBGAs), in the infectivity of human and animal group A rotaviruses. In the present study, we determined if porcine rotavirus-derived recombinant VP8* of the endemic strains 14R103 G5P[6], 13R054 G5P[7], 12R010 G4P[13], 12R046 G9P[23], and 12R022 G2P[27] interact with hitherto uncharacterized glycans. We successfully produced five recombinant GST-VP8* proteins of genotype P[6], P[7], P[13], P[23], and P[27]. The hemagglutination assay showed genotypes P[7] and P[23] hemagglutinate porcine and human red blood cells. In an array screen of > 300 glycans, recombinant VP8* of rotavirus genotype P[6], P[7], and P[13] showed specific binding to glycans with a Gal-β-1,4-Glc (β-lactose) motif, which forms the core structure of HBGAs. The specificity of glycan-binding was confirmed through an ELISA-based oligosaccharide binding assay. Further, 13R054 G5P[7] and 12R046 G9P[23] infectivity was significantly reduced by β-lactose in MA104 cells and primary porcine enterocytes. These data suggest that lactose, the main natural sugar in milk, plays an important role in protecting piglets from enteric viral replication and diarrhea.
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Affiliation(s)
- Xiaolei Ren
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- *Correspondence: Xiaolei Ren,
| | - Waqar Saleem
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Robin Haes
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Jiexiong Xie
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Sebastiaan Theuns
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- PathoSense BV, Lier, Belgium
| | - Hans J. Nauwynck
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Palit P, Ahmed MMM, Gazi MA, Haque MA, Alam MA, Haque R, Mahfuz M, Ahmed T. Association of Secretor Status with Enteropathy and Growth among Children in Bangladesh Aged 1-24 Months. Am J Trop Med Hyg 2022; 107:449-456. [PMID: 35895378 PMCID: PMC9393443 DOI: 10.4269/ajtmh.22-0183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/30/2022] [Indexed: 11/24/2022] Open
Abstract
Secretor status refers to the ability of an individual to secrete blood group antigens into body fluids and onto the different epithelial surfaces. Concurrent findings have demonstrated an association of the secretor status of children with susceptibility to a plethora of enteropathogens. We aimed to determine a possible association of secretor status of children with childhood enteropathy, an important causal factor for childhood growth failure. Participants of the Malnutrition and Enteric Disease (MAL-ED) birth cohort study from the Bangladesh site were enrolled along with their mothers. Saliva was analyzed for determining blood groups and secretor status of the children and their mothers by using an in-house ELISA. Approximately 59% of children and 65% of mothers were found to be secretor positive. Secretor-positive children were found to have a significantly positive association with alpha-1-antitrypsin (β-coefficient: 0.11, 95% CI: 0.07, 0.21, P < 0.01) and with environmental enteric dysfunction score (β-coefficient: 0.32, 95% CI: 0.29, 0.65, P = 0.05). However, despite a negative effect size, secretor-positive children did not show any statistical significance with length-for-age and weight-for-age z scores (LAZ and WAZ), respectively. Our findings indicate toward the genetic factor of secretor status of children being associated with childhood growth faltering, through increased susceptibility to distinct enteropathogens and the consequent development of enteric inflammation and enteropathy among children. However, these findings are only applicable in Bangladeshi settings and thus need to be validated in several other similar settings, to establish a possible relationship between the secretor status of children with enteropathy and resulting childhood growth failure.
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Affiliation(s)
- Parag Palit
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Mondar Maruf Moin Ahmed
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Md Amran Gazi
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Md Ahshanul Haque
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Md Ashraful Alam
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Rashidul Haque
- Emerging Infections and Parasitology Laboratory, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Mustafa Mahfuz
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
| | - Tahmeed Ahmed
- Nutrition and Clinical Services Division, International Centre for Diarrhoeal Diseases Research, Dhaka, Bangladesh (icddr,b)
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12
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Wu SC, Kamili NA, Dias-Baruffi M, Josephson CD, Rathgeber MF, Yeung MY, Lane WJ, Wang J, Jan HM, Rakoff-Nahoum S, Cummings RD, Stowell SR, Arthur CM. Innate immune Galectin-7 specifically targets microbes that decorate themselves in blood group-like antigens. iScience 2022; 25:104482. [PMID: 35754739 PMCID: PMC9218387 DOI: 10.1016/j.isci.2022.104482] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 04/14/2022] [Accepted: 05/23/2022] [Indexed: 11/29/2022] Open
Abstract
Adaptive immunity can target a nearly infinite range of antigens, yet it is tempered by tolerogenic mechanisms that limit autoimmunity. Such immunological tolerance, however, creates a gap in adaptive immunity against microbes decorated with self-like antigens as a form of molecular mimicry. Our results demonstrate that the innate immune lectin galectin-7 (Gal-7) binds a variety of distinct microbes, all of which share features of blood group-like antigens. Gal-7 binding to each blood group expressing microbe, including strains of Escherichia coli, Klebsiella pneumoniae, Providencia alcalifaciens, and Streptococcus pneumoniae, results in loss of microbial viability. Although Gal-7 also binds red blood cells (RBCs), this interaction does not alter RBC membrane integrity. These results demonstrate that Gal-7 recognizes a diverse range of microbes, each of which use molecular mimicry while failing to induce host cell injury, and thus may provide an innate form of immunity against molecular mimicry.
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Affiliation(s)
- Shang-Chuen Wu
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Nourine A. Kamili
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Marcelo Dias-Baruffi
- Department of Clinical Analysis, Toxicology, and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Cassandra D. Josephson
- Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Matthew F. Rathgeber
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Melissa Y. Yeung
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - William J. Lane
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Jianmei Wang
- Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Hau-Ming Jan
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Seth Rakoff-Nahoum
- Division of Infectious Disease, Department of Pediatrics, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Richard D. Cummings
- Harvard Glycomics Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Sean R. Stowell
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
| | - Connie M. Arthur
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA
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13
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Omer NA, Al-Bajalan SJ, Rahman HS, Mohammed MS. Correlation of SARS-CoV-2 infection severity with ABO blood groups and RhD antigen: a case-control study. J Int Med Res 2022; 50:3000605221110493. [PMID: 35836375 PMCID: PMC9290119 DOI: 10.1177/03000605221110493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 06/13/2022] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE The role of ABO types and RhD antigen in coronavirus disease 2019 (COVID-19) severity has been investigated in several recent studies. Thus, the objective of this study was to identify the relationship of ABO and RhD types with symptomatic COVID-19 disease and determine the groups associated with an increased risk of hospitalization. METHODS This observational case-control study was performed in 530 Iraqi-Kurdish patients with COVID-19. Among them, 184 were severe cases that required hospitalization, while 346 were mild to moderate cases that were treated at home. ABO and RhD antigen groups were compared between cases and 1698 control records from 1 year before the pandemic. The diagnosis of COVID-19 was based on real-time polymerase chain reaction tests and high-resolution chest computed tomography scans with the typical clinical presentation. RESULTS There were no significant differences in ABO and RhD antigen distributions between the COVID-19 cases and non-COVID controls. No ABO group was associated with the risk of hospitalization as a marker of the severity of infection. CONCLUSIONS There was no significant association between symptomatic COVID-19 disease and any ABO group or RhD antigen type. No impact of ABO groups on hospitalization was documented.
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Affiliation(s)
- Nazaneen Akbar Omer
- Department of Medical Biochemistry, College of Medicine, University of Sulaimani, Sulaimaniyah, Iraq
| | | | - Heshu Sulaiman Rahman
- Department of Physiology, College of Medicine, University of Sulaimani, Sulaimaniyah, Iraq
- Department of Medical Laboratory Sciences, Komar University of Science and Technology, Sulaimaniyah, Iraq
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14
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Soejima M, Koda Y. Simultaneous genotyping of three major Se enzyme inactivating SNPs of FUT2 based on a triplex probe-based fluorescence melting-curve analysis. Clin Chim Acta 2022; 530:50-54. [PMID: 35271838 DOI: 10.1016/j.cca.2022.03.003] [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: 01/25/2022] [Accepted: 03/04/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND The ABO(H) secretor status is controlled by FUT2-encoded α(1,2)fucosyltransferase (Se enzyme) activity. Three SNPs of FUT2, 302C>T (rs200157007), 385A>T (rs1047781), and 428G>A (rs601338), cause three major variants of nonsecretor (se) or weak-secretor (Sew) alleles. Evidence has been accumulating that suggests the secretor status is associated with various conditions including infectious diseases but a robust multiplex method for assaying relatively large-scale samples to determine the genotype of these three SNPs simultaneously has not been developed yet. METHODS By combined usage of two Eprobes and a dual-labeled fluorescence probe, we developed a real-time PCR, followed by triplex probe-based fluorescent melting-curve analysis (FMCA) for genotyping of 302C>T, 385A>T, and 428G>A of FUT2 in a single tube. RESULTS Three genotypes of each of three variants of FUT2 were accurately determined by the triplex probe-based FMCA. We then validated this method using genomic DNA samples of 47 Bangladeshis, and the results obtained by using this method were fully concordant with those by previous Sanger sequencing. CONCLUSIONS Since the present single triplex probe-based FMCA is robust, fast, and cost-effective, we are able to effectively estimate the secretor status of subjects on a large scale in many populations around the world.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan.
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15
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Peters T, Creutznacher R, Maass T, Mallagaray A, Ogrissek P, Taube S, Thiede L, Uetrecht C. Norovirus-glycan interactions - how strong are they really? Biochem Soc Trans 2022; 50:347-359. [PMID: 34940787 PMCID: PMC9022987 DOI: 10.1042/bst20210526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 12/25/2022]
Abstract
Infection with human noroviruses requires attachment to histo blood group antigens (HBGAs) via the major capsid protein VP1 as a primary step. Several crystal structures of VP1 protruding domain dimers, so called P-dimers, complexed with different HBGAs have been solved to atomic resolution. Corresponding binding affinities have been determined for HBGAs and other glycans exploiting different biophysical techniques, with mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy being most widely used. However, reported binding affinities are inconsistent. At the extreme, for the same system MS detects binding whereas NMR spectroscopy does not, suggesting a fundamental source of error. In this short essay, we will explain the reason for the observed differences and compile reliable and reproducible binding affinities. We will then highlight how a combination of MS techniques and NMR experiments affords unique insights into the process of HBGA binding by norovirus capsid proteins.
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Affiliation(s)
- Thomas Peters
- Institute of Chemistry and Metabolomics, University of Lübeck, 23562 Lübeck, Germany
| | - Robert Creutznacher
- Institute of Chemistry and Metabolomics, University of Lübeck, 23562 Lübeck, Germany
| | - Thorben Maass
- Institute of Chemistry and Metabolomics, University of Lübeck, 23562 Lübeck, Germany
| | - Alvaro Mallagaray
- Institute of Chemistry and Metabolomics, University of Lübeck, 23562 Lübeck, Germany
| | - Patrick Ogrissek
- Institute of Chemistry and Metabolomics, University of Lübeck, 23562 Lübeck, Germany
| | - Stefan Taube
- Institute of Virology and Cell Biology, University of Lübeck, 23562 Lübeck, Germany
| | - Lars Thiede
- Centre for Structural Systems Biology (CSSB), 22607 Hamburg & Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany
| | - Charlotte Uetrecht
- Centre for Structural Systems Biology (CSSB), 22607 Hamburg & Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany
- School of Life Sciences, University of Siegen, 57076 Siegen & Deutsches Elektronensynchrotron (DESY), 22607 Hamburg & European XFEL GmbH, 22869 Schenefeld, Germany
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16
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Tusé D, Malm M, Tamminen K, Diessner A, Thieme F, Jarczowski F, Blazevic V, Klimyuk V. Safety and immunogenicity studies in animal models support clinical development of a bivalent norovirus-like particle vaccine produced in plants. Vaccine 2022; 40:977-987. [PMID: 35063285 DOI: 10.1016/j.vaccine.2022.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/17/2021] [Accepted: 01/07/2022] [Indexed: 12/27/2022]
Abstract
Noroviruses (NoV) are the leading cause of epidemic acute gastroenteritis in humans worldwide. A safe and effective vaccine that prevents NoV infection or minimizes NoV disease burden is needed, especially for children and the elderly who are particularly susceptible to NoV disease. A plant-based expression system (magnICON®) was used to manufacture two different virus-like particle (VLP) immunogens derived from human NoV genogroups I and II, genotype 4 (GI.4 and GII.4), which were subsequently blended 1:1 (w/w) into a bivalent vaccine composition (rNV-2v). Here, we report on the safety and immunogenicity of rNV-2v from one pilot and two GLP-compliant toxicity studies in New Zealand White rabbits administered the vaccine subcutaneously (SC) or intramuscularly (IM). Strong genogroup-specific immune responses were induced by vaccination without adjuvant at various doses (200 to 400 μg VLP/administration) and administration schedules (Days 1 and 7; or Days 1, 15 and 29). The results showed sporadic local irritation at the injection site, which resolved over time, and was non-adverse and consistent with expected reactogenicity. There were no signs of systemic toxicity related to vaccine administration relative to vehicle-treated controls with respect to clinical chemistry, haematology, organ weights, macroscopic examinations, or histopathology. In a 3-administration regimen (n + 1 the clinical regimen), the NOAEL for rNV-2v via the SC or IM route was initially determined to be 200 μg. An improved GI.4 VLP variant mixed 1:1 (w/w) with the wild-type GII.4 VLP was subsequently evaluated via the IM route at a higher dose in the same 3-administration model, and the NOAEL was raised to 300 µg. Serology performed in samples of both toxicity studies showed significant and substantial anti-VLP-specific antibody titers for rNV-2v vaccines administered via the IM or SC route, as well as relevant NoV blocking antibody responses. These results support initiation of clinical development of the plant-made NoV vaccine.
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Affiliation(s)
- Daniel Tusé
- DT/Consulting Group, 2695 13(th) Street, Sacramento, CA 95818, USA
| | - Maria Malm
- Vaccine Research Center, University of Tampere, Arvo Ylpön katu 34, 33520 Tampere, Finland
| | - Kirsi Tamminen
- Vaccine Research Center, University of Tampere, Arvo Ylpön katu 34, 33520 Tampere, Finland
| | - André Diessner
- Icon Genetics GmbH, a Denka Company, Weinbergweg 22, D-06120 Halle, Germany
| | - Frank Thieme
- Icon Genetics GmbH, a Denka Company, Weinbergweg 22, D-06120 Halle, Germany
| | | | - Vesna Blazevic
- Vaccine Research Center, University of Tampere, Arvo Ylpön katu 34, 33520 Tampere, Finland
| | - Victor Klimyuk
- Icon Genetics GmbH, a Denka Company, Weinbergweg 22, D-06120 Halle, Germany.
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Amimo JO, Raev SA, Chepngeno J, Mainga AO, Guo Y, Saif L, Vlasova AN. Rotavirus Interactions With Host Intestinal Epithelial Cells. Front Immunol 2021; 12:793841. [PMID: 35003114 PMCID: PMC8727603 DOI: 10.3389/fimmu.2021.793841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/06/2021] [Indexed: 12/13/2022] Open
Abstract
Rotavirus (RV) is the foremost enteric pathogen associated with severe diarrheal illness in young children (<5years) and animals worldwide. RV primarily infects mature enterocytes in the intestinal epithelium causing villus atrophy, enhanced epithelial cell turnover and apoptosis. Intestinal epithelial cells (IECs) being the first physical barrier against RV infection employs a range of innate immune strategies to counteract RVs invasion, including mucus production, toll-like receptor signaling and cytokine/chemokine production. Conversely, RVs have evolved numerous mechanisms to escape/subvert host immunity, seizing translation machinery of the host for effective replication and transmission. RV cell entry process involve penetration through the outer mucus layer, interaction with cell surface molecules and intestinal microbiota before reaching the IECs. For successful cell attachment and entry, RVs use sialic acid, histo-blood group antigens, heat shock cognate protein 70 and cell-surface integrins as attachment factors and/or (co)-receptors. In this review, a comprehensive summary of the existing knowledge of mechanisms underlying RV-IECs interactions, including the role of gut microbiota, during RV infection is presented. Understanding these mechanisms is imperative for developing efficacious strategies to control RV infections, including development of antiviral therapies and vaccines that target specific immune system antagonists within IECs.
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Affiliation(s)
- Joshua Oluoch Amimo
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
- Department of Animal Production, Faculty of Veterinary Medicine, University of Nairobi, Nairobi, Kenya
| | - Sergei Alekseevich Raev
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
| | - Juliet Chepngeno
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
| | - Alfred Omwando Mainga
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
- Department of Public Health, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Nairobi, Nairobi, Kenya
| | - Yusheng Guo
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
| | - Linda Saif
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
| | - Anastasia N. Vlasova
- Center for Food Animal Health, Department of Animal Sciences, College of Food Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH, United States
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18
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Bentall A, Jeyakanthan M, Braitch M, Cairo CW, Lowary TL, Maier S, Halpin A, Motyka B, Zou L, West LJ, Ball S. Characterization of ABH-subtype donor-specific antibodies in ABO-A-incompatible kidney transplantation. Am J Transplant 2021; 21:3649-3662. [PMID: 34101982 PMCID: PMC8597088 DOI: 10.1111/ajt.16712] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 04/30/2021] [Accepted: 05/15/2021] [Indexed: 01/25/2023]
Abstract
ABO-incompatible (ABOi) transplantation requires preemptive antibody reduction; however, the relationship between antibody-mediated rejection (AMR) and ABO-antibodies, quantified by hemagglutination (HA), is inconsistent, possibly reflecting variable graft resistance to AMR or HA assay limitations. Using an ABH-glycan microarray, we quantified ABO-A antigen-subtype (A-subtype)-specific IgM and IgG in 53 ABO-O recipients of ABO-A kidneys, before and after antibody removal (therapeutic plasma exchange [TPE] or ABO-A-trisaccharide immunoadsorption [IA]) and 1-year posttransplant. IgM binding to all A-subtypes correlated highly (R2 ≥ .90) and A-subtype antibody specificities was reduced equally by IA versus TPE. IgG binding to the A-subtypes (II-IV) expressed in kidney correlated poorly (.27 ≤ R2 ≤ .69). Reduction of IgG specific to A-subtype-II was equivalent for IA and TPE, whereas IgG specific to A-subtypes-III/IV was not as greatly reduced by IA (p < .005). One-year posttransplant, IgG specific to A-II remained the most reduced antibody. Immunostaining revealed only A-II on vascular endothelium but A-subtypes II-III/IV on tubular epithelium. These results show that ABO-A-trisaccharide is sufficient for IgM binding to all A-subtypes; this is true for IgG binding to A-II, but not subtypes-III/IV, which exhibits varying degrees of specificity. We identify A-II as the major, but importantly not the sole, antigen relevant to treatment and immune modulation in adult ABO-A-incompatible kidney transplantation.
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Affiliation(s)
- Andrew Bentall
- Department of NephrologyUniversity HospitalBirminghamUK,Division of Nephrology and HypertensionMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Mylvaganam Jeyakanthan
- Department of Cardiothoracic SurgeryJames Cook University HospitalMiddlesbroughUK,Department of PediatricsUniversity of AlbertaEdmontonABCanada
| | | | - Christopher W. Cairo
- Alberta Glycomics Centre and Department of ChemistryUniversity of AlbertaEdmontonABCanada
| | - Todd L. Lowary
- Alberta Glycomics Centre and Department of ChemistryUniversity of AlbertaEdmontonABCanada
| | - Stephanie Maier
- Alberta Transplant Institute and Canadian Donation and Transplantation Research ProgramUniversity of AlbertaEdmontonABCanada
| | - Anne Halpin
- Department of PediatricsUniversity of AlbertaEdmontonABCanada,Alberta Transplant Institute and Canadian Donation and Transplantation Research ProgramUniversity of AlbertaEdmontonABCanada,Department of Laboratory Medicine and PathologyUniversity of AlbertaEdmontonABCanada
| | - Bruce Motyka
- Department of PediatricsUniversity of AlbertaEdmontonABCanada,Alberta Transplant Institute and Canadian Donation and Transplantation Research ProgramUniversity of AlbertaEdmontonABCanada
| | - Lu Zou
- Alberta Glycomics Centre and Department of ChemistryUniversity of AlbertaEdmontonABCanada
| | - Lori J. West
- Department of PediatricsUniversity of AlbertaEdmontonABCanada,Alberta Transplant Institute and Canadian Donation and Transplantation Research ProgramUniversity of AlbertaEdmontonABCanada,Department of Laboratory Medicine and PathologyUniversity of AlbertaEdmontonABCanada,Department of SurgeryUniversity of AlbertaEdmontonABCanada,Department of Medical Microbiology and ImmunologyUniversity of AlbertaEdmontonABCanada
| | - Simon Ball
- Department of NephrologyUniversity HospitalBirminghamUK,School of Immunity and InfectionUniversity of BirminghamBirminghamUK
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19
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Mészáros Z, Nekvasilová P, Bojarová P, Křen V, Slámová K. Reprint of: Advanced glycosidases as ingenious biosynthetic instruments. Biotechnol Adv 2021; 51:107820. [PMID: 34462167 DOI: 10.1016/j.biotechadv.2021.107820] [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: 11/25/2020] [Revised: 03/09/2021] [Accepted: 03/17/2021] [Indexed: 11/27/2022]
Abstract
Until recently, glycosidases, naturally hydrolyzing carbohydrate-active enzymes, have found few synthetic applications in industry, being primarily used for cleaving unwanted carbohydrates. With the establishment of glycosynthase and transglycosidase technology by genetic engineering, the view of glycosidases as industrial biotechnology tools has started to change. Their easy production, affordability, robustness, and substrate versatility, added to the possibility of controlling undesired side hydrolysis by enzyme engineering, have made glycosidases competitive synthetic tools. Current promising applications of engineered glycosidases include the production of well-defined chitooligomers, precious galactooligosaccharides or specialty chemicals such as glycosylated flavonoids. Other synthetic pathways leading to human milk oligosaccharides or remodeled antibodies are on the horizon. This work provides an overview of the synthetic achievements to date for glycosidases, emphasizing the latest trends and outlining possible developments in the field.
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Affiliation(s)
- Zuzana Mészáros
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic; Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 1903/3, CZ-16628 Praha 6, Czech Republic
| | - Pavlína Nekvasilová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic; Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, CZ-12843, Praha 2, Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic
| | - Kristýna Slámová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic.
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20
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Genetic Studies of Natural Glycosphingolipid Ligands for NKT Cells. Methods Mol Biol 2021. [PMID: 34524658 DOI: 10.1007/978-1-0716-1775-5_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Glycosphingolipids (GSL) are natural ligands of NKT cells. Several laboratories have reported the in vitro activity of isoglobotriosylceramide (iGb3) in stimulating NKT cells. However, the knockout mice of iGb3 synthase showed no deficiency in development and function of NKT cells. There is a lack of knowledge on the genetics of redundant natural glycosphingolipid ligands. We have identified additional glycosphingolipid with stimulatory activity to NKT cells, including fucosyl lactosylceramide (H antigen). Here we describe the procedures to generate mice with deficiencies in Fut1, Fut2, and Sec1 genes to deplete H antigen through BAC engineering for the generation of ES cell-targeting construct, as well as the mice with deficiency of both blood group H-GSL ligand and isoglobotriosylceramide.
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21
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Abstract
Histo-blood group antigen contains oligosaccharides that serve as receptors for norovirus (NoV) and rotavirus (RV). The receptors are only present on the surface of intestinal mucosal epithelial cells of secretors; therefore, secretors are susceptible to NoV and RV diarrhea and nonsecretors are resistant. The prevalence of secretors in different countries varies between 50% and 90%. Secretor rates evolved in response to environmental pressures such as infectious diseases.
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22
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Matzhold EM, Berghold A, Bemelmans MKB, Banfi C, Stelzl E, Kessler HH, Steinmetz I, Krause R, Wurzer H, Schlenke P, Wagner T. Lewis and ABO histo-blood types and the secretor status of patients hospitalized with COVID-19 implicate a role for ABO antibodies in susceptibility to infection with SARS-CoV-2. Transfusion 2021; 61:2736-2745. [PMID: 34151460 PMCID: PMC8447157 DOI: 10.1111/trf.16567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 05/11/2021] [Accepted: 06/13/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) targets the respiratory and gastric epithelium, causing coronavirus disease 2019 (COVID-19). Tissue antigen expression variations influence host susceptibility to many infections. This study aimed to investigate the closely linked Lewis (FUT3) and ABO histo-blood types, including secretor (FUT2) status, to infections with SARS-CoV-2 and the corresponding severity of COVID-19. STUDY DESIGN AND METHODS Patients (Caucasians, n = 338) were genotyped for ABO, FUT3, and FUT2, and compared to a reference population of blood donors (n = 250,298). The association between blood types and severity of COVID-19 was addressed by dividing patients into four categories: hospitalized individuals in general wards, patients admitted to the intensive care unit with and without intubation, and deceased patients. Comorbidities were considered in subsequent analyses. RESULTS Patients with blood type Lewis (a-b-) or O were significantly less likely to be hospitalized (odds ratio [OR] 0.669, confidence interval [CI] 0.446-0.971, OR 0.710, CI 0.556-0.900, respectively), while type AB was significantly more prevalent in the patient cohort (OR 1.519, CI 1.014-2.203). The proportions of secretors/nonsecretors, and Lewis a+ or Lewis b+ types were consistent between patients and controls. The analyzed blood groups were not associated with the clinical outcome as defined. DISCUSSION Blood types Lewis (a-b-) and O were found to be protective factors, whereas the group AB is suggested to be a risk factor for COVID-19. The antigens investigated may not be prognostic for disease severity, but a role for ABO isoagglutinins in SARS-CoV-2 infections is strongly suggested.
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Affiliation(s)
- Eva Maria Matzhold
- Department of Blood Group Serology and Transfusion MedicineMedical University of GrazGrazAustria
| | - Andrea Berghold
- Institute for Medical Informatics, Statistics and DocumentationMedical University of GrazGrazAustria
| | - Maria Karin Berta Bemelmans
- Department of Blood Group Serology and Transfusion MedicineMedical University of GrazGrazAustria
- FH Campus WienUniversity of Applied SciencesViennaAustria
| | - Chiara Banfi
- Institute for Medical Informatics, Statistics and DocumentationMedical University of GrazGrazAustria
| | - Evelyn Stelzl
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Research Unit Molecular Diagnostics, Diagnostic and Research Center for Molecular BiomedicineMedical University of GrazGrazAustria
| | - Harald Hans Kessler
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Research Unit Molecular Diagnostics, Diagnostic and Research Center for Molecular BiomedicineMedical University of GrazGrazAustria
| | - Ivo Steinmetz
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Research Unit Molecular Diagnostics, Diagnostic and Research Center for Molecular BiomedicineMedical University of GrazGrazAustria
| | - Robert Krause
- Section of Infectious Diseases and Tropical Medicine, Department of Internal MedicineMedical University of GrazGrazAustria
| | - Herbert Wurzer
- Department of Internal MedicineLandeskrankenhaus Graz IIGrazAustria
| | - Peter Schlenke
- Department of Blood Group Serology and Transfusion MedicineMedical University of GrazGrazAustria
| | - Thomas Wagner
- Department of Blood Group Serology and Transfusion MedicineMedical University of GrazGrazAustria
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23
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Soejima M, Koda Y. Rapid detection of phenotypes Bombay se del and nonsecretor rs200157007 SNP (302C > T) by real-time PCR-based methods. Sci Rep 2021; 11:14996. [PMID: 34294843 PMCID: PMC8298435 DOI: 10.1038/s41598-021-94659-7] [Citation(s) in RCA: 3] [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: 04/06/2021] [Accepted: 07/14/2021] [Indexed: 11/12/2022] Open
Abstract
The sedel allele is one of the nonsecretor alleles (se) of FUT2 generated by an Alu-mediated recombination event and was first found in Indian Bombay phenotype individuals who have anti-H, anti-A, and anti-B antibodies in their serum. As well as anti-A, and anti-B antibodies, anti-H is clinically significant because it causes sever hemolytic transfusion reactions. Like sedel, se302 having a missense single nucleotide polymorphism (SNP), 302C > T, is characteristic of South Asians with a frequency of 10-30%. We developed a real-time PCR melting curve analysis for detection of sedel using a 127-bp amplicon encompassing the breakpoint junction. In addition, by performing duplex PCR by amplifying a 65-bp amplicon of the FUT2 coding region at the same time, we could determine the zygosity of sedel in a single tube. We also developed an Eprobe-mediated PCR assay (Eprobe-PCR) for detection of 302C > T of FUT2. These methods were validated by analyzing 58 Tamils and 54 Sinhalese in Sri Lanka. Both the duplex PCR melting curve analysis for determination of sedel zygosity and the Eprobe-PCR assay for detection of 302C > T exactly determined three genotypes. In addition, the results of the present methods were in complete agreement with those obtained by previously established methods. The two present methods were reliable and seem to be advantageous for large-scale association studies of FUT2 polymorphisms in South Asian populations.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, 830-0011, Japan.
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24
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Martynov I, Göpel W, Rausch TK, Härtel C, Franke A, Franz AR, Viemann D, Thome UH, Lacher M, Ackermann BW. Blood group AB increases risk for surgical necrotizing enterocolitis and focal intestinal perforation in preterm infants with very low birth weight. Sci Rep 2021; 11:13777. [PMID: 34215818 PMCID: PMC8253726 DOI: 10.1038/s41598-021-93195-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 06/14/2021] [Indexed: 12/13/2022] Open
Abstract
Necrotizing enterocolitis (NEC) and focal intestinal perforation (FIP) are two of the most common emergencies of the gastrointestinal tract in preterm infants with very low birth weight (VLBW, birth weight < 1500 g). Identification of risk factors among these children is crucial for earlier diagnosis and prompt intervention. In this study, we investigated a relationship between ABO blood groups and the risk for surgical NEC/FIP. We genotyped the ABO locus (rs8176746 and rs8176719) in VLBW infants enrolled in a prospective, population-based cohort study of the German Neonatal Network (GNN). Of the 10,257 VLBW infants, 441 (4.3%) had surgical NEC/FIP. In univariate analyses, the blood group AB was more prevalent in VLBW infants with surgical NEC/FIP compared to non-AB blood groups (OR 1.51, 95% CI 1.07–2.13, p = 0.017; absolute risk difference 2.01%, 95% CI 0.06–3.96%). The association between blood group AB and surgical NEC/FIP was observed in a multivariable logistic regression model (OR of 1.58, 95% CI 1.10–2.26, p = 0.013) as well. In summary, our study suggests that the risk of surgical NEC and FIP is higher in patients with blood group AB and lower in those having non-AB blood groups.
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Affiliation(s)
- I Martynov
- Department of Pediatric Surgery, University of Leipzig, Liebigstraße 20 a, 04103, Leipzig, Germany.
| | - W Göpel
- Department of Pediatrics, University of Lübeck, Lübeck, Germany
| | - T K Rausch
- Department of Pediatrics, University of Lübeck, Lübeck, Germany.,Institute for Medical Biometry and Statistics, University of Lübeck, Lübeck, Germany
| | - C Härtel
- Department of Pediatrics, University of Lübeck, Lübeck, Germany
| | - A Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel & University Hospital Schleswig-Holstein, Kiel, Germany
| | - A R Franz
- Department of Neonatology, University Children's Hospital Tübingen, Tübingen, Germany.,Center for Pediatric Clinical Studies (CPCS), University Children's Hospital Tübingen, Tübingen, Germany
| | - D Viemann
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany
| | - U H Thome
- Division of Neonatology, Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Leipzig, Germany
| | - M Lacher
- Department of Pediatric Surgery, University of Leipzig, Liebigstraße 20 a, 04103, Leipzig, Germany
| | - B W Ackermann
- Division of Neonatology, Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Leipzig, Germany
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25
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Quintana JI, Delgado S, Núñez-Franco R, Cañada FJ, Jiménez-Osés G, Jiménez-Barbero J, Ardá A. Galectin-4 N-Terminal Domain: Binding Preferences Toward A and B Antigens With Different Peripheral Core Presentations. Front Chem 2021; 9:664097. [PMID: 33968903 PMCID: PMC8097242 DOI: 10.3389/fchem.2021.664097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/15/2021] [Indexed: 01/22/2023] Open
Abstract
The tandem-repeat Galectin-4 (Gal-4) contains two different domains covalently linked through a short flexible peptide. Both domains have been shown to bind preferentially to A and B histo blood group antigens with different affinities, although the binding details are not yet available. The biological relevance of these associations is unknown, although it could be related to its attributed role in pathogen recognition. The presentation of A and B histo blood group antigens in terms of peripheral core structures differs among tissues and from that of the antigen-mimicking structures produced by pathogens. Herein, the binding of the N-terminal domain of Gal-4 toward a group of differently presented A and B oligosaccharide antigens in solution has been studied through a combination of NMR, isothermal titration calorimetry (ITC), and molecular modeling. The data presented in this paper allow the identification of the specific effects that subtle chemical modifications within this antigenic family have in the binding to the N-terminal domain of Gal-4 in terms of affinity and intermolecular interactions, providing a structural-based rationale for the observed trend in the binding preferences.
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Affiliation(s)
- Jon I Quintana
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Sandra Delgado
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Reyes Núñez-Franco
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - F Javier Cañada
- Margarita Salas Center for Biological Research, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council, Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES) Avda, Monforte de Lemos, Spain
| | - Gonzalo Jiménez-Osés
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain.,lkerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain.,lkerbasque, Basque Foundation for Science, Bilbao, Spain.,Department of Organic Chemistry ll, Faculty of Science & Technology, University of the Basque Country, Leioa, Spain
| | - Ana Ardá
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Derio, Spain.,lkerbasque, Basque Foundation for Science, Bilbao, Spain
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26
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Matos R, Amorim I, Magalhães A, Haesebrouck F, Gärtner F, Reis CA. Adhesion of Helicobacter Species to the Human Gastric Mucosa: A Deep Look Into Glycans Role. Front Mol Biosci 2021; 8:656439. [PMID: 34026832 PMCID: PMC8138122 DOI: 10.3389/fmolb.2021.656439] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/22/2021] [Indexed: 12/15/2022] Open
Abstract
Helicobacter species infections may be associated with the development of gastric disorders, such as gastritis, peptic ulcers, intestinal metaplasia, dysplasia and gastric carcinoma. Binding of these bacteria to the gastric mucosa occurs through the recognition of specific glycan receptors expressed by the host epithelial cells. This review addresses the state of the art knowledge on these host glycan structures and the bacterial adhesins involved in Helicobacter spp. adhesion to gastric mucosa colonization. Glycans are expressed on every cell surface and they are crucial for several biological processes, including protein folding, cell signaling and recognition, and host-pathogen interactions. Helicobacter pylori is the most predominant gastric Helicobacter species in humans. The adhesion of this bacterium to glycan epitopes present on the gastric epithelial surface is a crucial step for a successful colonization. Major adhesins essential for colonization and infection are the blood-group antigen-binding adhesin (BabA) which mediates the interaction with fucosylated H-type 1 and Lewis B glycans, and the sialic acid-binding adhesin (SabA) which recognizes the sialyl-Lewis A and X glycan antigens. Since not every H. pylori strain expresses functional BabA or SabA adhesins, other bacterial proteins are most probably also involved in this adhesion process, including LabA (LacdiNAc-binding adhesin), which binds to the LacdiNAc motif on MUC5AC mucin. Besides H. pylori, several other gastric non-Helicobacter pylori Helicobacters (NHPH), mainly associated with pigs (H. suis) and pets (H. felis, H. bizzozeronii, H. salomonis, and H. heilmannii), may also colonize the human stomach and cause gastric disease, including gastritis, peptic ulcers and mucosa-associated lymphoid tissue (MALT) lymphoma. These NHPH lack homologous to the major known adhesins involved in colonization of the human stomach. In humans, NHPH infection rate is much lower than in the natural hosts. Differences in the glycosylation profile between gastric human and animal mucins acting as glycan receptors for NHPH-associated adhesins, may be involved. The identification and characterization of the key molecules involved in the adhesion of gastric Helicobacter species to the gastric mucosa is important to understand the colonization and infection strategies displayed by different members of this genus.
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Affiliation(s)
- Rita Matos
- Instituto de Investigação e Inovação Em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS), Porto, Portugal
| | - Irina Amorim
- Instituto de Investigação e Inovação Em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS), Porto, Portugal
| | - Ana Magalhães
- Instituto de Investigação e Inovação Em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Fátima Gärtner
- Instituto de Investigação e Inovação Em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - Celso A. Reis
- Instituto de Investigação e Inovação Em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto (FMUP), Porto, Portugal
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27
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Mészáros Z, Nekvasilová P, Bojarová P, Křen V, Slámová K. Advanced glycosidases as ingenious biosynthetic instruments. Biotechnol Adv 2021; 49:107733. [PMID: 33781890 DOI: 10.1016/j.biotechadv.2021.107733] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/09/2021] [Accepted: 03/17/2021] [Indexed: 12/22/2022]
Abstract
Until recently, glycosidases, naturally hydrolyzing carbohydrate-active enzymes, have found few synthetic applications in industry, being primarily used for cleaving unwanted carbohydrates. With the establishment of glycosynthase and transglycosidase technology by genetic engineering, the view of glycosidases as industrial biotechnology tools has started to change. Their easy production, affordability, robustness, and substrate versatility, added to the possibility of controlling undesired side hydrolysis by enzyme engineering, have made glycosidases competitive synthetic tools. Current promising applications of engineered glycosidases include the production of well-defined chitooligomers, precious galactooligosaccharides or specialty chemicals such as glycosylated flavonoids. Other synthetic pathways leading to human milk oligosaccharides or remodeled antibodies are on the horizon. This work provides an overview of the synthetic achievements to date for glycosidases, emphasizing the latest trends and outlining possible developments in the field.
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Affiliation(s)
- Zuzana Mészáros
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic; Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 1903/3, CZ-16628 Praha 6, Czech Republic
| | - Pavlína Nekvasilová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic; Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, CZ-12843, Praha 2, Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic
| | - Kristýna Slámová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Praha 4, Czech Republic.
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28
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Estimation of secretor status of ABO antigens by high-resolution melting analysis of rs601338 (428G > A). Clin Chim Acta 2021; 517:86-91. [PMID: 33667483 DOI: 10.1016/j.cca.2021.02.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 02/06/2021] [Accepted: 02/20/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND FUT2 determines the secretor status of ABH antigens. Many lines of evidence suggest an association between secretor status and susceptibility to various clinical conditions. For this kind of study, large-scale genotyping of FUT2 is necessary. Because FUT2 has a pseudogene (SEC1) with high DNA sequence similarity and is rich in population-specific SNPs, we need to pay attention in designing the primers for genotyping FUT2. The se428 allele having a 428G > A nonsense SNP (W143X, rs601338) is the predominant non-secretor allele in Europeans, Latin Americans and Africans. On the other hand, se357,480,778del having the 778C > del frameshift SNP (P260Lfs*16, rs1799761) is almost exclusively found in Africans with frequencies of 1-4%. STUDY DESIGN AND METHODS We developed high-resolution melting (HRM) analyses using short (69-bp for 428G > A, 65-bp for 778C > del) amplicons for genotyping two SNPs directly and validated the method by analyzing 95 Ghanaians whose FUT2 genotypes were previously determined. RESULTS Two sets of assays clearly discriminated three genotypes of 428G > A (G/G, G/A, A/A), and two genotypes of 778C > del (C/C, C/del). In addition, the results obtained for the 95 Ghanaians by HRM analysis were in full agreement with previous ones. CONCLUSION The present HRM analysis reliably genotyped 428G > A. Thus, estimation of secretor status based on se428 using the present HRM analysis may be useful for large scale association studies of FUT2. In addition to 428G > A, genotyping of other causal polymorphisms for non-secretors with high frequency, as is the case with 778C > del for Africans, is desirable for more accurate estimation of the secretor status of the target populations.
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29
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Goel R, Bloch EM, Pirenne F, Al-Riyami AZ, Crowe E, Dau L, Land K, Townsend M, Jecko T, Rahimi-Levene N, Patidar G, Josephson CD, Arora S, Vermeulen M, Vrielink H, Montemayor C, Oreh A, Hindawi S, van den Berg K, Serrano K, So-Osman C, Wood E, Devine DV, Spitalnik SL. ABO blood group and COVID-19: a review on behalf of the ISBT COVID-19 working group. Vox Sang 2021; 116:849-861. [PMID: 33578447 PMCID: PMC8014128 DOI: 10.1111/vox.13076] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/23/2020] [Accepted: 12/23/2020] [Indexed: 12/30/2022]
Abstract
Growing evidence suggests that ABO blood group may play a role in the immunopathogenesis of SARS-CoV-2 infection, with group O individuals less likely to test positive and group A conferring a higher susceptibility to infection and propensity to severe disease. The level of evidence supporting an association between ABO type and SARS-CoV-2/COVID-19 ranges from small observational studies, to genome-wide-association-analyses and country-level meta-regression analyses. ABO blood group antigens are oligosaccharides expressed on red cells and other tissues (notably endothelium). There are several hypotheses to explain the differences in SARS-CoV-2 infection by ABO type. For example, anti-A and/or anti-B antibodies (e.g. present in group O individuals) could bind to corresponding antigens on the viral envelope and contribute to viral neutralization, thereby preventing target cell infection. The SARS-CoV-2 virus and SARS-CoV spike (S) proteins may be bound by anti-A isoagglutinins (e.g. present in group O and group B individuals), which may block interactions between virus and angiotensin-converting-enzyme-2-receptor, thereby preventing entry into lung epithelial cells. ABO type-associated variations in angiotensin-converting enzyme-1 activity and levels of von Willebrand factor (VWF) and factor VIII could also influence adverse outcomes, notably in group A individuals who express high VWF levels. In conclusion, group O may be associated with a lower risk of SARS-CoV-2 infection and group A may be associated with a higher risk of SARS-CoV-2 infection along with severe disease. However, prospective and mechanistic studies are needed to verify several of the proposed associations. Based on the strength of available studies, there are insufficient data for guiding policy in this regard.
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Affiliation(s)
- Ruchika Goel
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Division of Hematology/Oncology, Simmons Cancer Institute at SIU School of Medicine and Mississippi Valley Regional Blood Center, Springfield, IL, USA
| | - Evan M Bloch
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - France Pirenne
- Etablissement Français du Sang Ile de France, Hôpital Henri Mondor, Créteil, France
| | - Arwa Z Al-Riyami
- Department of Hematology, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman
| | - Elizabeth Crowe
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Laetitia Dau
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kevin Land
- Vitalant, Scottsdale, AZ, USA.,Department of Pathology, UT, San Antonio, TX, USA
| | | | | | | | - Gopal Patidar
- Department of Transfusion Medicine, All India Institute of Medical Sciences, New Delhi, India
| | | | - Satyam Arora
- Super Speciality Pediatric Hospital and Post Graduate Teaching Institute, Noida, India
| | - Marion Vermeulen
- The South African National Blood Service, Port Elizabeth, South Africa
| | - Hans Vrielink
- Dept Unit Transfusion Medicine, Sanquin Bloodbank, Amsterdam, the Netherlands
| | | | - Adaeze Oreh
- National Blood Transfusion Service, Department of Hospital Services, Federal Ministry of Health, Abuja, Nigeria
| | | | - Karin van den Berg
- Translational Research Department, Medical Division, South African National Blood Service, Port Elizabeth, South Africa.,Division of Clinical Haematology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Katherine Serrano
- Canadian Blood Services, Vancouver, BC, Canada.,Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Cynthia So-Osman
- Dept Unit Transfusion Medicine, Sanquin Bloodbank, Amsterdam, the Netherlands.,Dept. of Haematology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Erica Wood
- Monash University, Melbourne, VIC, Australia
| | - Dana V Devine
- Canadian Blood Services, Vancouver, BC, Canada.,Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Steven L Spitalnik
- Department of Pathology & Cell Biology, Columbia University, New York, NY, USA
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30
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Soejima M, Koda Y. Survey and characterization of nonfunctional alleles of FUT2 in a database. Sci Rep 2021; 11:3186. [PMID: 33542434 PMCID: PMC7862633 DOI: 10.1038/s41598-021-82895-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/27/2021] [Indexed: 12/18/2022] Open
Abstract
The expression of ABO antigens in human saliva is regulated by the FUT2 gene, which encodes a secretor type α(1,2)fucosyltransferase. Secretors express ABO substrates in saliva and non-secretors do not. Secretor status is an object of concern, especially for susceptibility to various infectious diseases. A multitude of single nucleotide polymorphisms (SNPs) and copy number variations (CNVs) have been reported, and they show unique distributions among different populations. In this study, we selected 18 uncharacterized FUT2 alleles listed in the Erythrogene database and obtained genomic DNA having these alleles. We experimentally confirmed the haplotypes, but 10 of 18 alleles disagreed with those in the database, which may be attributed to their low frequency. We then examined the activity of the encoded α(1,2)fucosyltransferase for 13 alleles by flow cytometry of H antigen expression. The impact of each nonsynonymous SNP on the enzyme was also estimated by software. We finally identified two non-secretor alleles (se610and se357,856,863) and one weak secretor allele (se262,357), while in silico analysis predicted that many alleles impair the function. The present results suggest that correct haplotyping and functional assays are desirable for analysis of the FUT2 gene.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, 830-0011, Japan.
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31
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Infection of porcine small intestinal enteroids with human and pig rotavirus A strains reveals contrasting roles for histo-blood group antigens and terminal sialic acids. PLoS Pathog 2021; 17:e1009237. [PMID: 33513201 PMCID: PMC7846020 DOI: 10.1371/journal.ppat.1009237] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/15/2020] [Indexed: 01/19/2023] Open
Abstract
Rotaviruses (RVs) are a leading cause of acute viral gastroenteritis in young children and livestock worldwide. Growing evidence suggests that host cellular glycans, such as histo-blood group antigens (HBGAs) and sialic acids (SA), are recognized by the RV surface protein VP4. However, a mechanistic understanding of these interactions and their effects on RV infection and pathogenesis is lacking. Here, we established a porcine crypt-derived 3Dintestinalenteroids (PIEs) culture system which contains all intestinal epithelial cells identified in vivo and represents a unique physiologically functional model to study RV-glycan interactions in vitro. PIEs expressing different HBGAs (A+, H+, and A+/H+) were established and isolation, propagation, differentiation and RV infection conditions were optimized. Differentiated PIEs were infected with human RV (HRV) G1P[8] Wa, porcine RV (PRV) G9P[13], PRV Gottfried G4P[6] or PRV OSU G5P[7] virulent and attenuated strains and virus replication was measured by qRT-PCR. Our results indicated that virulent HRV G1P[8] Wa replicated to the highest titers in A+ PIEs, while a distinct trend was observed for PRV G9P[13] or G5P[7] with highest titers in H+ PIEs. Attenuated Wa and Gottfried strains replicated poorly in PIEs while the replication of attenuated G9P[13] and OSU strains in PIEs was relatively efficient. However, the replication of all 4 attenuate strains was less affected by the PIE HBGA phenotypes. HBGA synthesis inhibitor 2-F-Peracetyl-Fucose (2F) treatment demonstrated that HBGAs are essential for G1P[8] Wa replication; however, they may only serve as a cofactor for PRVs G9P[13] and OSU G5P[7]. Interestingly, contrasting outcomes were observed following sialidase treatment which significantly enhanced G9P[13] replication, but inhibited the growth of G5P[7]. These observations suggest that some additional receptors recognized by G9P[13] become unmasked after removal of terminal SA. Overall, our results confirm that differential HBGAs-RV and SA-RV interactions determine replication efficacy of virulent group A RVs in PIEs. Consequently, targeting individual glycans for development of therapeutics may not yield uniform results for various RV strains. Cell surface glycans, including histo-blood group antigens (HBGA) and sialic acids (SAs), have been shown to serve as receptors/attachment factors for many pathogens including RVs. However, how those glycans affect RV replication remains largely unknown due the lack of reliable in vitro models. To solve this problem, we established a 3D porcine intestinal enteroid (PIE) model that recapitulates the complex intestinal morphology better than conventional cell lines. By utilizing PIEs expressing different types of HBGAs, we found that several RV strains including Wa G1P[8], OSU G5P[7] and G9P[13] show preference for certain HBGA types. Interestingly, only Wa replication was reduced when HBGAs synthesis was inhibited, while that of OSU and G9P[13] was only marginally affected, which indicates that they may utilize alternative attachment factors for infection. Sialidase treatment strongly inhibited the growth of OSU, while G9P[13] replication was significantly enhanced. These findings suggest that SAs play contrasting roles in the infection of PRV OSU and G9P[13] strains. Overall, our studies demonstrate that PIEs can serve as a model to study pathogen-glycan interactions and suggest that genetically distinct RVs have evolved diverse mechanisms of cell attachment and/or entry.
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32
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Laine RA, Gahmberg CC, Sekiguchi K, Kannagi R, Nudelman ED, Clausen H. Professor Sen-itiroh Hakomori (1929-2020) A tribute to a remarkable glycobiologist, mentor, and friend! Glycobiology 2021; 31:708-712. [PMID: 33527981 DOI: 10.1093/glycob/cwab006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Roger A Laine
- Depts of Biological Sciences and Chemistry, Louisiana State University, Baton Rouge, LA 70808
| | - Carl C Gahmberg
- Programme in Molecular and Systemic Biosciences, University of Helsinki, Viikinkaari 9, 00014 Helsinki, Finland
| | - Kiyotoshi Sekiguchi
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka Suita, Osaka 565-0871, Japan
| | - Reiji Kannagi
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | | | - Henrik Clausen
- Copenhagen Centre for Glycomics, University of Copenhagen, Department of Cellular and Molecular Medicine, Nørre Alle 14, DK-2200 Copenhagen N, Denmark
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de Oliveira IA, Corvelo TCDO. ABH and Lewis blood group systems and their relation to diagnosis and risk of Helicobacter pylori infection. Microb Pathog 2020; 152:104653. [PMID: 33253856 DOI: 10.1016/j.micpath.2020.104653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/01/2020] [Accepted: 11/23/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Helicobacter pylori infection occurs in 50% of the world's population and represents a major risk factor for chronic gastritis, gastroduodenal ulcer and gastric cancer in developed and developing countries. The distribution of H. pylori virulence factors is diverse and varies geographically, such as the CagA and VacA genes, which have revealed association with disease status. Some findings show increased frequencies of these diseases in O Le (a-b +) and A Le (a-b +) blood type individuals, but other studies not found any relationship between these blood groups and H. pylori infection. AIM This study aimed to elucidate probable controversies described in the relationship between the ABH/Lewis blood groups and H. pylori, contributing to the severity of gastric diseases in northern the population of Belém -Pará.-Brazil. METHODS This cross-sectional study included 288 samples of patients separate into two groups with gastric cancer and chronic gastritis. Blood, saliva, and gastric biopsy were analyzed using modified Gram and hematoxylin-eosin staining techniques, the enzyme immunoassay Elisa and Multiplex PCR. The antigens expression of ABH and Lewis systems was determined through Dot-ELISA and direct hemagglutination. Proportions were compared in univariate analysis, while the relation between putative risk factors including H. pylori status and ABO/Lewis phenotype was performed using multivariable logistic regression analyses, P-value < 0.05 was considered significant. RESULTS The findings of this study demonstrate that the likelihood of developing gastric cancer increases threefold if the individual is from A1 Le (a-b +) blood group, has premalignant changes, and infection with H. pylori virulent strains (cagA+/vacA + s1m1). CONCLUSION Therefore, this study found a significant association between ABO and Lewis phenotypes and H. pylori cagA status into the relevance of the development of gastric carcinogenesis.
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Aguiar DCF, Pereira WLA, de Matos GDCB, Marruaz da Silva KS, de Loiola RDSP, Corvelo TCO. Tissue expression of antigens of ABH blood groups in species of New World Monkeys (Aotus infulatus, Callithrix jacchus, Sapajus apella and Saimiri sciureus). PLoS One 2020; 15:e0241487. [PMID: 33206689 PMCID: PMC7673508 DOI: 10.1371/journal.pone.0241487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 09/15/2020] [Indexed: 11/18/2022] Open
Abstract
ABH antigens are histo-antigens, but were first described on the surface of human erythrocytes. They are found in those cells only in great apes and humans, while in more primitive animals they are found in tissues and body fluids. ABH antigens are mainly distributed in tissues that are in contact with the external environment and may serve as ligands for pathogens in tissues or block their connection. Description of the distribution of these molecules in non-human primate tissues is restricted to a few tissues and species. This paper describes the expression of human A, B and H type antigens in different organs from four species of New World Primates, obtained from the Centro Nacional de Primatas, as well as comparing that expression with what has been described for humans. In this study, although the tissue description of the antigens is similar to the genetic model for humans, some differences in expression between some organs from those species and those of humans were found. The differences occurred mainly in endodermal organs that have secretory functions and are probably under the control of the human-type FUT-2 enzyme. In the mesodermal-origin organs there was a reduction or absence of A and B antigen marking, particularly in the H precursor substance, indicating that those organs are under the control of the human-type FUT-1 enzyme. These findings have demonstrated that there is similar ABH antigen reactivity in tissue distribution between the species, although there are some species-specific cases.
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Affiliation(s)
- Délia Cristina Figueira Aguiar
- Laboratory of Biomolecular Technology, Institute of Biological Sciences, Federal -University of Pará, Belém, Pará, Brazil
- * E-mail:
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Is ABO blood group a risk or prognostic factor for patients with endometrioid endometrial cancer? A retrospective analysis in Germany. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2020; 18:465-470. [PMID: 32530401 DOI: 10.2450/2020.002-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 04/07/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND A relationship is known to exist between gastric and pancreatic cancers and ABO antigens, caused by various immune modulations related to the ABO blood group of the patient. A similar relationship with regard to gynaecological cancers remains controversial. MATERIALS AND METHODS Patients who underwent surgery for endometrioid endometrial cancer in International Federation of Gynaecology and Obstetrics (FIGO) stage I, II, III or IV from 2006 to 2018 were identified. The research explored the existence of a relationship between the patients' blood group or Rhesus factor and the incidence of endometrial cancer, grade (G1, G2, G3), FIGO stage, nodal status, recurrence, menopausal status, parity, and body mass index. Statistical methods such as the chi-square test, analysis of variance and the Scheffé post-hoc test were used. RESULTS Two hundred and two patients with endometrioid endometrial cancer were included: 96 had blood group A, 19 blood group B, 75 blood group 0, and 12 had blood group AB. This distribution corresponds to the general blood group distribution in Germany. The vast majority of the dependent variables, such as grade, FIGO stage, nodal status or recurrence were not significantly associated with ABO blood group or Rhesus factor status. The relative frequencies of G1 and G3 endometrial cancers with respect to blood group were similar. Menopausal status, parity, and body mass index were not related to more advanced FIGO stages at initial diagnosis or to ABO blood group. DISCUSSION Blood group screening would probably not be helpful in the diagnosis of endometrioid endometrial carcinomas in early stages compared to the current gold standard. Furthermore, a specific blood group does not increase either the risk of recurrence or the risk of a dedifferentiated type of endometrial carcinoma.
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Buck-Wiese H, Fanuel M, Liebeke M, Le Mai Hoang K, Pardo-Vargas A, Seeberger PH, Hehemann JH, Rogniaux H, Jackson GP, Ropartz D. Discrimination of β-1,4- and β-1,3-Linkages in Native Oligosaccharides via Charge Transfer Dissociation Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1249-1259. [PMID: 32309938 DOI: 10.1021/jasms.0c00087] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The connection between monosaccharides influences the structure, solubility, and biological function of carbohydrates. Although tandem mass spectrometry (MS/MS) often enables the compositional identification of carbohydrates, traditional MS/MS fragmentation methods fail to generate abundant cross-ring fragments of intrachain monosaccharides that could reveal carbohydrate connectivity. We examined the potential of helium-charge transfer dissociation (He-CTD) as a method of MS/MS to decipher the connectivity of β-1,4- and β-1,3-linked oligosaccharides. In contrast to collision-induced dissociation (CID), He-CTD of isolated oligosaccharide precursors produced both glycosidic and cross-ring cleavages of each monosaccharide. The radical-driven dissociation in He-CTD induced single cleavage events, without consecutive fragmentations, which facilitated structural interpretation. He-CTD of various standards up to a degree of polymerization of 7 showed that β-1,4- and β-1,3-linked carbohydrates can be distinguished based on diagnostic 3,5A fragment ions that are characteristic for β-1,4-linkages. Overall, fragment ion spectra from He-CTD contained sufficient information to infer the connectivity specifically for each glycosidic bond. When testing He-CTD to resolve the order of β-1,4- and β-1,3-linkages in mixed-linked oligosaccharide standards, He-CTD spectra sometimes provided less confident assignment of connectivity. Ion mobility spectrometry-mass spectrometry (IMS-MS) of the standards indicated that ambiguity in the He-CTD spectra was caused by isobaric impurities in the mixed-linked oligosaccharides. Radical-driven dissociation induced by He-CTD can thus expand MS/MS to carbohydrate linkage analysis, as demonstrated by the comprehensive fragment ion spectra on native oligosaccharides. The determination of connectivity in true unknowns would benefit from the separation of isobaric precursors, through UPLC or IMS, before linkage determination via He-CTD.
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Affiliation(s)
- Hagen Buck-Wiese
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
- Marine Glycobiology, Marum Center for Marine Environmental Sciences, Leobener Strasse 8, 28359 Bremen, Germany
| | - Mathieu Fanuel
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
| | - Manuel Liebeke
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
| | - Kim Le Mai Hoang
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Alonso Pardo-Vargas
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute for Chemistry and Biochemistry, Free University Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Jan-Hendrik Hehemann
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
- Marine Glycobiology, Marum Center for Marine Environmental Sciences, Leobener Strasse 8, 28359 Bremen, Germany
| | - Hélène Rogniaux
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
| | - Glen P Jackson
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia 26506, United States
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - David Ropartz
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
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Soejima M, Koda Y. FUT2 polymorphism in Latin American populations. Clin Chim Acta 2020; 505:1-5. [PMID: 32070726 DOI: 10.1016/j.cca.2020.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/12/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND The secretor type α(1,2)fucosyltransferase gene (FUT2) is known to be rich in population-specific polymorphisms. However, genetic variations of FUT2 have not been well examined in Latin American populations in which nonsecretors are rare. METHODS Conventional polymerase chain reactions and direct sequencing were performed to detect single nucleotide polymorphisms (SNPs) and copy number variations (CNVs) of FUT2 in Mexicans including Americans of Mexican ancestry, Puerto Ricans, Caribbeans, and Colombians. FUT2 alleles were determined by cloning into plasmids or PHASE software. The impact of uncharacterized missense SNPs on the enzyme activity were examined by transient transfection assays and estimated by several software programs. RESULTS Three alleles, Se357, Se, and se428, were common, and the frequency of nonsecretors was relatively low in the studied populations. We also encountered several alleles specific to Africans, Europeans, and South and East Asians including a South Asian-specific sedel. In contrast to the in silico prediction, a transient expression study suggested that both of two missense SNPs, 235G > A and 304G > A, did not impair the enzyme activity. CONCLUSIONS The allelic polymorphism of FUT2 suggests that the modern Latin American populations were formed via genetic admixture among Native Americans and populations whose ancestors migrated from other continents. In this study, we have observed a discrepancy between in silico and functional analyses for FUT2 for the first time. Therefore, experimental functional analysis is required for evaluation of SNPs of FUT2.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan.
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Pokala A, Paramkusam G, Tejaswi MLA, Bangi BB, Nadendla LK, Devulapally RV. Histo-Blood Group Antigens in Oral Cancer and Potentially Malignant Disorders. Asian Pac J Cancer Prev 2020; 21:1163-1166. [PMID: 32334486 PMCID: PMC7445960 DOI: 10.31557/apjcp.2020.21.4.1163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Early detection of oral cancer is of critical importance because survival rates markedly improve when oral lesions are identified at an early stage. Aim of the present study is to investigate the expression of ABO (H) antigens in tissue specimens of oral cancer and potentially malignant disorders and to determine the role of ABO (H) antigens in tumour staging. MATERIALS AND METHODS A prospective study was conducted on 60 cases of oral cancer and potentially malignant diseases. Specific red cell adherence test (SRCA-test) was used for studying A, B and O (H) antigens in tissue specimens and iso-antigenicity of epithelium was graded according to degree of adherence of indicator red blood cells. RESULTS Among OSMF group, grade II adherence was seen in 53.3% cases, grade III in 33.3% cases, grade IV in 13.3% cases. In leukoplakia group, grade II adherence was seen in 26.7% cases, grade III adherence in 53.3% cases, grade IV adherence in 20% cases. Within the leukoplakia group, cases with dysplasia showed decreased adherence, compared with cases without dysplasia. Oral cancer group, negative adherence was seen in 13.3% cases, grade I adherence in 46.7% cases, grade II in 40% cases. In oral cancer group, antigen reactivity was less in poorly and moderately differentiated carcinoma, compared to well differentiated carcinoma. CONCLUSIONS Antigen adherence and degree of loss of ABO (H) antigens in tissue specimens can be used for staging of the tumour.
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Affiliation(s)
- Archana Pokala
- Department of Oral Medicine and Radiology, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | | | - M L Avinash Tejaswi
- Department of Oral Medicine and Radiology, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Balaji Babu Bangi
- Department of Oral Medicine and Radiology, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
| | - Lakshmi Kavitha Nadendla
- Department of Oral Medicine and Radiology, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
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Kominato Y, Sano R, Takahashi Y, Hayakawa A, Ogasawara K. Human ABO gene transcriptional regulation. Transfusion 2020; 60:860-869. [PMID: 32216153 PMCID: PMC7187371 DOI: 10.1111/trf.15760] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 02/06/2020] [Accepted: 02/23/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Yoshihiko Kominato
- Department of Legal Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Rie Sano
- Department of Legal Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoichiro Takahashi
- Department of Legal Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akira Hayakawa
- Department of Legal Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
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Xu S, Ahmed LU, Stuckert MR, McGinnis KR, Liu Y, Tan M, Huang P, Zhong W, Zhao D, Jiang X, Kennedy MA. Molecular basis of P[II] major human rotavirus VP8* domain recognition of histo-blood group antigens. PLoS Pathog 2020; 16:e1008386. [PMID: 32208455 PMCID: PMC7122821 DOI: 10.1371/journal.ppat.1008386] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 04/03/2020] [Accepted: 02/05/2020] [Indexed: 11/19/2022] Open
Abstract
Initial cell attachment of rotavirus (RV) to specific cell surface glycan receptors, which is the essential first step in RV infection, is mediated by the VP8* domain of the spike protein VP4. Recently, human histo-blood group antigens (HBGAs) have been identified as receptors or attachment factors for human RV strains. RV strains in the P[4] and P[8] genotypes of the P[II] genogroup share common recognition of the Lewis b (Leb) and H type 1 antigens, however, the molecular basis of receptor recognition by the major human P[8] RVs remains unknown due to lack of experimental structural information. Here, we used nuclear magnetic resonance (NMR) spectroscopy-based titration experiments and NMR-derived high ambiguity driven docking (HADDOCK) methods to elucidate the molecular basis for P[8] VP8* recognition of the Leb (LNDFH I) and type 1 HBGAs. We also used X-ray crystallography to determine the molecular details underlying P[6] recognition of H type 1 HBGAs. Unlike P[6]/P[19] VP8*s that recognize H type 1 HBGAs in a binding surface composed of an α-helix and a β-sheet, referred as the “βα binding site”, the P[8] and P[4] VP8*s bind Leb HBGAs in a previously undescribed pocket formed by the edges of two β-sheets, referred to as the “ββ binding site”. Importantly, the P[8] and P[4] VP8*s retain binding capability to non-Leb type 1 HBGAs using the βα binding site. The presence of two distinct binding sites for Leb and non-Leb HBGA glycans in the P[8] and P[4] VP8* domains suggests host-pathogen co-evolution under structural and functional adaptation of RV pathogens to host glycan polymorphisms. Assessment and understanding of the precise impact of this co-evolutionary process in determining RV host ranges and cross-species RV transmission should facilitate improved RV vaccine development and prediction of future RV strain emergence and epidemics. Rotaviruses (RV)s are the main cause of severe diarrhea in humans and animals. Significant advances in understanding RV diversity, evolution and epidemiology have been made after discovering that RVs recognize histo-blood group antigens (HBGAs) as host cell receptors or attachment factors. While different RV strains are known to have distinct binding preferences for HBGA receptor ligands, their molecular basis in controlling strain-specific host ranges remains unclear. In this study, we used solution nuclear magnetic resonance spectroscopy and X-ray crystallography to determine the molecular-level details for interactions of the human P[8] and P[6] RV VP8* domains with their HBGA receptors ligands. The distinct binding patterns observed between these major human RVs and their respective glycan ligands provide insight into the evolutionary relationships between different P[II] genotypes that ultimately determine host ranges, disease burden, zoonosis and epidemiology, which may impact future strategies for development of vaccines to protect against RV infections.
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Affiliation(s)
- Shenyuan Xu
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, United States of America
| | - Luay U. Ahmed
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, United States of America
| | - Michael Robert Stuckert
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, United States of America
| | - Kristen Rose McGinnis
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, United States of America
| | - Yang Liu
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Ming Tan
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
- University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Pengwei Huang
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Weiming Zhong
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Dandan Zhao
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Xi Jiang
- Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
- University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- * E-mail: (XJ); (MAK)
| | - Michael A. Kennedy
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, United States of America
- * E-mail: (XJ); (MAK)
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Rahfeld P, Wardman JF, Mehr K, Huff D, Morgan-Lang C, Chen HM, Hallam SJ, Withers SG. Prospecting for microbial α- N-acetylgalactosaminidases yields a new class of GH31 O-glycanase. J Biol Chem 2019; 294:16400-16415. [PMID: 31530641 DOI: 10.1074/jbc.ra119.010628] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/16/2019] [Indexed: 12/18/2022] Open
Abstract
α-Linked GalNAc (α-GalNAc) is most notably found at the nonreducing terminus of the blood type-determining A-antigen and as the initial point of attachment to the peptide backbone in mucin-type O-glycans. However, despite their ubiquity in saccharolytic microbe-rich environments such as the human gut, relatively few α-N-acetylgalactosaminidases are known. Here, to discover and characterize novel microbial enzymes that hydrolyze α-GalNAc, we screened small-insert libraries containing metagenomic DNA from the human gut microbiome. Using a simple fluorogenic glycoside substrate, we identified and characterized a glycoside hydrolase 109 (GH109) that is active on blood type A-antigen, along with a new subfamily of glycoside hydrolase 31 (GH31) that specifically cleaves the initial α-GalNAc from mucin-type O-glycans. This represents a new activity in this GH family and a potentially useful new enzyme class for analysis or modification of O-glycans on protein or cell surfaces.
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Affiliation(s)
- Peter Rahfeld
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada .,Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Jacob F Wardman
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.,Department of Biochemistry and Molecular Biology, University of British Columbia, Life Sciences Centre, Vancouver, British Columbia V6T 1Z3, Canada
| | - Kevin Mehr
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.,Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Drew Huff
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.,Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Connor Morgan-Lang
- Department of Microbiology and Immunology, University of British Columbia, Life Sciences Centre, Vancouver, British Columbia V6T 1Z3, Canada.,Graduate Program in Bioinformatics, University of British Columbia, Genome Sciences Centre, Vancouver, British Columbia V5Z 4S6, Canada
| | - Hong-Ming Chen
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Steven J Hallam
- Department of Microbiology and Immunology, University of British Columbia, Life Sciences Centre, Vancouver, British Columbia V6T 1Z3, Canada.,Graduate Program in Bioinformatics, University of British Columbia, Genome Sciences Centre, Vancouver, British Columbia V5Z 4S6, Canada.,ECOSCOPE Training Program, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada.,Peter Wall Institute for Advanced Studies, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Stephen G Withers
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada .,Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.,Department of Biochemistry and Molecular Biology, University of British Columbia, Life Sciences Centre, Vancouver, British Columbia V6T 1Z3, Canada
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Vlasova AN, Takanashi S, Miyazaki A, Rajashekara G, Saif LJ. How the gut microbiome regulates host immune responses to viral vaccines. Curr Opin Virol 2019; 37:16-25. [PMID: 31163292 PMCID: PMC6863389 DOI: 10.1016/j.coviro.2019.05.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023]
Abstract
The co-evolution of the microbiota and immune system has forged a mutually beneficial relationship. This relationship allows the host to maintain the balance between active immunity to pathogens and vaccines and tolerance to self-antigens and food antigens. In children living in low-income and middle-income countries, undernourishment and repetitive gastrointestinal infections are associated with the failure of oral vaccines. Intestinal dysbiosis associated with these environmental influences, as well as some host-related factors, compromises immune responses and negatively impacts vaccine efficacy. To understand how immune responses to viral vaccines can be optimally modulated, mechanistic studies of the relationship between the microbiome, host genetics, viral infections and the development and function of the immune system are needed. We discuss the potential role of the microbiome in modulating vaccine responses in the context of a growing understanding of the relationship between the gastrointestinal microbiota, host related factors (including histo-blood group antigens) and resident immune cell populations.
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Affiliation(s)
- Anastasia N Vlasova
- Food Animal Health Research Program, CFAES, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Wooster, OH 44691, USA.
| | - Sayaka Takanashi
- Food Animal Health Research Program, CFAES, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Wooster, OH 44691, USA; Department of Developmental Medical Sciences, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ayako Miyazaki
- Division of Viral Disease and Epidemiology, National Institute of Animal Health, National Agriculture and Food Research Organization, Tsukuba, Ibaraki 305-0856, Japan
| | - Gireesh Rajashekara
- Food Animal Health Research Program, CFAES, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Wooster, OH 44691, USA
| | - Linda J Saif
- Food Animal Health Research Program, CFAES, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Wooster, OH 44691, USA.
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Soejima M, Koda Y. Genetic variation of FUT2 in a Peruvian population: identification of a novel LTR-mediated deletion and characterization of 4 nonsynonymous single-nucleotide polymorphisms. Transfusion 2019; 59:2415-2421. [PMID: 30957248 DOI: 10.1111/trf.15298] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/17/2023]
Abstract
BACKGROUND The human FUT2 gene, which encodes a secretor type α(1,2)fucosyltransferase, is reported to have several population-specific single-nucleotide polymorphisms (SNPs) and copy number variations. However, little is known about genetic variation of FUT2 in Native Americans. STUDY DESIGN AND METHODS To detect SNPs and copy number variations of the FUT2 gene in Peruvians, direct sequencing and digital polymerase chain reaction were performed. Haplotypes of observed SNPs were estimated by PHASE software or cloning into plasmids. The functional significance of nonsynonymous SNPs was examined by transient transfection assay. RESULTS We identified three novel nonfunctional alleles (se178,357 , se841 , and sedel4 ) due to two nonsynonymous SNPs (178C > T and 841G > A) and a novel long terminal repeat-mediated recombination with a 4.3-kb deletion in 70 Peruvians. The frequency of nonfunctional alleles was relative low (20.7%). Because se841 has a relatively high frequency (5.7%), it might be a suitable genetic marker for Peruvians. CONCLUSION We identified three novel nonfunctional alleles in 70 Peruvians. To our knowledge, this is the first time a long terminal repeat-mediated gene recombination event at the FUT2 locus has been detected.
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Affiliation(s)
- Mikiko Soejima
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Yoshiro Koda
- Department of Forensic Medicine, Kurume University School of Medicine, Kurume, Japan
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Perry H, Bovin N, Henry S. A standardized kodecyte method to quantify ABO antibodies in undiluted plasma of patients before ABO‐incompatible kidney transplantation. Transfusion 2019; 59:2131-2140. [DOI: 10.1111/trf.15247] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/18/2019] [Accepted: 02/20/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Holly Perry
- School of Science, Faculty of Health and Environmental SciencesAuckland University of Technology Auckland New Zealand
- Centre for Kode Technology Innovation, School of Engineering, Computer and Mathematical Sciences, Faculty of Design and Creative TechnologiesAuckland University of Technology Auckland New Zealand
| | - Nicolai Bovin
- Centre for Kode Technology Innovation, School of Engineering, Computer and Mathematical Sciences, Faculty of Design and Creative TechnologiesAuckland University of Technology Auckland New Zealand
- Shemyakin Institute of Bioorganic Chemistry Moscow Russian Federation
| | - Stephen Henry
- Centre for Kode Technology Innovation, School of Engineering, Computer and Mathematical Sciences, Faculty of Design and Creative TechnologiesAuckland University of Technology Auckland New Zealand
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Duffy binding-like 1α adhesin from Plasmodium falciparum recognizes ABH histo-blood group saccharide in a type specific manner. Carbohydr Polym 2019; 207:266-275. [PMID: 30600009 DOI: 10.1016/j.carbpol.2018.11.082] [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: 06/21/2018] [Revised: 10/30/2018] [Accepted: 11/25/2018] [Indexed: 11/20/2022]
Abstract
The ability of erythrocytes, infected by Plasmodium falciparum, to adhere to endothelial cells (cytoadherence) and to capture uninfected erythrocyte (rosetting) is the leading cause of death by severe malaria. Evidences link the binding of the adhesin Duffy Binding Like1-α (DBL1α) domain to the ABH histo-blood antigens with formation of rosettes. Inspired by this very close relationship between the disease susceptibility and individual blood type, here we investigate the structural requirements involved in the interaction of DBL1α with A, B and H histo-blood determinants and their subtypes. Our results evidence the high preference of DBL1α to A epitopes, in comparison to B and H epitopes. DBL1α interacts with ABH epitopes in subtype specific manner, presenting a remarkable affinity for type 2 structures, Fucα1-2Galβ1-4GlcNAcβ1, particularly the A2 epitope. The contacts made by DBL1α binding pocket and the ABH histo-blood groups were mapped by theoretical methods and supported by NMR experiments.
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Barbé L, Le Moullac-Vaidye B, Echasserieau K, Bernardeau K, Carton T, Bovin N, Nordgren J, Svensson L, Ruvoën-Clouet N, Le Pendu J. Histo-blood group antigen-binding specificities of human rotaviruses are associated with gastroenteritis but not with in vitro infection. Sci Rep 2018; 8:12961. [PMID: 30154494 PMCID: PMC6113245 DOI: 10.1038/s41598-018-31005-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/10/2018] [Indexed: 12/30/2022] Open
Abstract
Human strains of rotavirus A (RVAs) recognize fucosylated glycans belonging to histo-blood group antigens (HBGAs) through their spike protein VP8*. Lack of these ligands due to genetic polymorphisms is associated with resistance to gastroenteritis caused by P[8] genotype RVAs. With the aim to delineate the contribution of HBGAs in the process, we analyzed the glycan specificity of VP8* proteins from various P genotypes. Binding to saliva of VP8* from P[8] and P[4] genotypes required expression of both FUT2 and FUT3 enzymes, whilst binding of VP8* from the P[14] genotype required FUT2 and A enzymes. We further defined a glycan motif, GlcNAcβ3Galβ4GlcNAc, recognized by P[6] clinical strains. Conversion into Lewis antigens by the FUT3 enzyme impaired recognition, explaining their lower binding to saliva of Lewis positive phenotype. In addition, the presence of neutralizing antibodies was associated with the presence of the FUT2 wild type allele in sera from young healthy adults. Nonetheless, in vitro infection of transformed cell lines was independent of HBGAs expression, indicating that HBGAs are not human RV receptors. The match between results from saliva-based binding assays and the epidemiological data indicates that the polymorphism of human HBGAs controls susceptibility to RVAs, although the exact mechanism remains unclear.
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Affiliation(s)
- Laure Barbé
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
| | | | - Klara Echasserieau
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
- Plateforme P2R « Production de protéines recombinantes », SFR Sante F. Bonamy-IRS-UN, Université de Nantes, INSERM, CNRS, CHU Nantes, Nantes, France
| | - Karine Bernardeau
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
- Plateforme P2R « Production de protéines recombinantes », SFR Sante F. Bonamy-IRS-UN, Université de Nantes, INSERM, CNRS, CHU Nantes, Nantes, France
| | | | - Nicolai Bovin
- Institute of Bioorganic Chemistry RAS, Moscow, Russia
| | - Johan Nordgren
- Division of Molecular Virology, Medical Faculty, University of Linköping, Linköping, Sweden
| | - Lennart Svensson
- Division of Molecular Virology, Medical Faculty, University of Linköping, Linköping, Sweden
- Division of Infectious Diseases, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden
| | - Nathalie Ruvoën-Clouet
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
- Oniris, Ecole Nationale Vétérinaire, Agroalimentaire et de l'Alimentation, Nantes, France
| | - Jacques Le Pendu
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France.
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47
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Emadi-Baygi M, Sedighi R, Nourbakhsh N, Nikpour P. Pseudogenes in gastric cancer pathogenesis: a review article. Brief Funct Genomics 2018; 16:348-360. [PMID: 28459995 DOI: 10.1093/bfgp/elx004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cancer burden rises globally at an alarming pace. According to GLOBOCAN 2012, gastric cancer (GC) is regarded as the fifth most common malignancy in the world. Being twice as high in men as in women, GC is the third leading cause of cancer mortality in both sexes globally. Being labeled as 'junk DNA', pseudogenes were considered as nonfunctional 'trash', which contribute nothing to survival of the organism; therefore, a number of strategies have been developed to circumvent their accidental detection. Recent progresses have confirmed that pseudogenes can have broad and multifaceted spectrum of activities in human cancers in general and GC in particular. Furthermore, the mentioned functions are parental gene-dependent and/or -independent. Therefore, pseudogenes can be regarded as the emerging class of elaborate modulators of gene expression involved in pathogenesis of human cancers including gastric adenocarcinoma.
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48
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Hunter CD, Guo T, Daskhan G, Richards MR, Cairo CW. Synthetic Strategies for Modified Glycosphingolipids and Their Design as Probes. Chem Rev 2018; 118:8188-8241. [DOI: 10.1021/acs.chemrev.8b00070] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Carmanah D. Hunter
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Tianlin Guo
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Gour Daskhan
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Michele R. Richards
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Christopher W. Cairo
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Stakišaitis D, Juknevičienė M, Ulys A, Žaliūnienė D, Stanislovaitienė D, Šepetienė R, Slavinska A, Sužiedėlis K, Lesauskaitė V. ABO blood group polymorphism has an impact on prostate, kidney and bladder cancer in association with longevity. Oncol Lett 2018; 16:1321-1331. [PMID: 30061952 PMCID: PMC6063046 DOI: 10.3892/ol.2018.8749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 04/16/2018] [Indexed: 02/07/2023] Open
Abstract
The aim of the present study was to assess the ABO blood group polymorphism association with prostate, bladder and kidney cancer, and longevity. The following data groups were analyzed: Prostate cancer (n=2,200), bladder cancer (n=1,530), renal cell cancer (n=2,650), oldest-old (n=166) and blood donors (n=994) groups. The data on the ABO blood type frequency and odds ratio in prostate cancer patients revealed a significantly higher blood group B frequency (P<0.05); the pooled men and women, separate men bladder cancer risk was significantly associated with the blood group B (P<0.04); however, no such association was identified in the female patients. The blood group O was observed to have a significantly decreased risk of bladder cancer for females (P<0.05). No significance for the ABO blood group type in the studied kidney cancer patients was identified. A comparison of the oldest-old and blood donor groups revealed that blood group A was significantly more frequent and blood type B was significantly rarer in the oldest-olds (P<0.05). The results of the present study indicated that blood type B was associated with the risk of prostate and bladder cancer, and could be evaluated as a determinant in the negative assocation with longevity. Blood types O and A may be positive factors for increasing the oldest-old age likelihood. The clustering analysis by the ABO type frequency demonstrated that the oldest-olds comprised a separate cluster of the studied groups.
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Affiliation(s)
- Donatas Stakišaitis
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania
| | - Milda Juknevičienė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania
| | - Albertas Ulys
- Oncosurgery Clinics, National Cancer Institute, LT-08660 Vilnius, Lithuania
| | - Dalia Žaliūnienė
- Department of Ophtalmology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania
| | - Daiva Stanislovaitienė
- Department of Ophtalmology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania
| | - Ramunė Šepetienė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania
| | | | - Kęstutis Sužiedėlis
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania
| | - Vita Lesauskaitė
- Department of Geriatrics, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania
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Bakunina I, Chadova O, Malyarenko O, Ermakova S. The Effect of Fucoidan from the Brown Alga Fucus evanescence on the Activity of α- N-Acetylgalactosaminidase of Human Colon Carcinoma Cells. Mar Drugs 2018; 16:E155. [PMID: 29748462 PMCID: PMC5983286 DOI: 10.3390/md16050155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 11/16/2022] Open
Abstract
α-N-acetylgalactosaminidase (EC 3.2.1.49) (alpha-NaGalase) catalyzes the hydrolysis of N-acetamido-2-deoxy-α-d-galactoside residues from non-reducing ends of various complex carbohydrates and glycoconjugates. It is known that human cancer cells express an alpha-NaGalase, which accumulates in the blood plasma of patients. The enzyme deglycosylates the Gc protein-derived macrophage activating factor (GcMAF) and inhibits macrophage activity acting as an immunosuppressor. The high specific activity 0.033 ± 0.002 μmol mg−1 min−1 of the enzyme was found in human colon carcinoma cells DLD-1. The alpha-NaGalase of DLD-1 cells was isolated and biochemical characterized. The enzyme exhibits maximum activity at pH 5.2 and temperature 55 °C. The Km is 2.15 mM, Vmax⁻0.021 μmol min−1 mL−1, kcat⁻1.55 min−1 and kcat/Km⁻0.72 min−1 mM−1 at 37 °C, pH 5.2. The effects of fucoidan from the brown alga Fucus evanescence on the activity of alpha-NaGalase in human colon carcinoma DLD-1 cells and on the biosynthesis of this enzyme were investigated. It was shown that fucoidan did not inhibit free alpha-NaGalase, however, it reduced the expression of the enzyme in the DLD-1 cells at IC50 73 ± 4 μg mL−1.
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Affiliation(s)
- Irina Bakunina
- Laboratory of Enzyme Chemistry of G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690022, Russia.
| | - Oksana Chadova
- School of Natural Sciences, Far Eastern Federal University, Vladivostok 690091, Russia.
| | - Olesya Malyarenko
- Laboratory of Enzyme Chemistry of G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690022, Russia.
| | - Svetlana Ermakova
- Laboratory of Enzyme Chemistry of G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690022, Russia.
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