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Munir M, Embry A, Doench JG, Heaton NS, Wilen CB, Orchard RC. Genome-wide CRISPR activation screen identifies JADE3 as an antiviral activator of NF-kB-dependent IFITM3 expression. J Biol Chem 2024; 300:107153. [PMID: 38462163 PMCID: PMC11001640 DOI: 10.1016/j.jbc.2024.107153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 02/29/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024] Open
Abstract
The innate immune system features a web of interacting pathways that require exquisite regulation. To identify novel nodes in this immune landscape, we conducted a gain-of-function, genome-wide CRISPR activation screen with influenza A virus. We identified both appreciated and novel antiviral genes, including Jade family PHD zinc finger 3 (JADE3) a protein involved in directing the histone acetyltransferase histone acetyltransferase binding to ORC1 complex to modify chromatin and regulate transcription. JADE3 is both necessary and sufficient to restrict influenza A virus infection. Our results suggest a distinct function for JADE3 as expression of the closely related paralogs JADE1 and JADE2 does not confer resistance to influenza A virus infection. JADE3 is required for both constitutive and inducible expression of the well-characterized antiviral gene interferon-induced transmembrane protein 3 (IFITM3). Furthermore, we find JADE3 activates the NF-kB signaling pathway, which is required for the promotion of IFITM3 expression by JADE3. Therefore, we propose JADE3 activates an antiviral genetic program involving NF-kB-dependent IFITM3 expression to restrict influenza A virus infection.
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Affiliation(s)
- Moiz Munir
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Aaron Embry
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - John G Doench
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Nicholas S Heaton
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Craig B Wilen
- Department of Laboratory Medicine and Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Robert C Orchard
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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2
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Jiang F, Liu Z, Zhang Y, Song T. Associations Between ABO Blood Groups and Diseases in the Digestive System and Vein. Int J Gen Med 2024; 17:1185-1191. [PMID: 38562208 PMCID: PMC10982066 DOI: 10.2147/ijgm.s451087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/13/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose The ABO blood type system is crucial for human blood transfusions. However, the relationships between ABO blood groups and diseases in the digestive system and vein have not been elucidated. We investigated the relationships between ABO blood groups and diseases in the digestive system and vein in this study. Patients and Methods A retrospective study on a Chinese population, including 1432 Crohn's disease (CD), 416 ulcerative colitis (UC), 1140 stomach cancer (SC), 841 colorectal cancer (CRC), 384 pancreatic cancer (PC), 520 liver cancer (LC), and 563 venous thrombosis (VT) patients, was performed. Furthermore, 896 healthy subjects were enrolled as normal controls (NC) in this study. The demographic characteristics of patients and NC were compared using the unpaired t-test and χ2 test. Multivariate logistic regression model was used to evaluate the association between ABO blood groups and CD and VT. Results ABO blood groups distributions in UC, SC, CRC, PC, and LC patients did not differ from that of NC, but CD and VT patients had significant difference of ABO blood group distribution from that of NC (p = 0.015 and p = 0.002, respectively). Patients with CD and VT had considerably lower rates of type O blood (p = 0.011 and p = 0.001, respectively) and significantly higher rates of type AB blood (p = 0.013 and p = 0.022, respectively) than those with NC. Multivariate logistic regression analysis showed the association of CD and VT with non-O blood types was still significant with a higher risk than with blood group O after adjusting for age and gender (OR = 1.355, 95% CI = 1.100-1.670, p = 0.004 and OR = 1.465, 95% CI = 1.131-1.903, p = 0.004, respectively). Conclusion ABO blood groups distributions in CD and VT patients significantly differed from that of NC. Non-O blood group could be a new predictor for CD and VT.
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Affiliation(s)
- Feiyu Jiang
- Department of Blood Transfusion, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Zhiwei Liu
- Department of Blood Transfusion, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Ying Zhang
- Department of Blood Transfusion, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Tiejun Song
- Department of Blood Transfusion, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
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3
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Yang S, He Z, Wu T, Wang S, Dai H. Glycobiology in osteoclast differentiation and function. Bone Res 2023; 11:55. [PMID: 37884496 PMCID: PMC10603120 DOI: 10.1038/s41413-023-00293-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 08/20/2023] [Accepted: 09/07/2023] [Indexed: 10/28/2023] Open
Abstract
Glycans, either alone or in complex with glycan-binding proteins, are essential structures that can regulate cell biology by mediating protein stability or receptor dimerization under physiological and pathological conditions. Certain glycans are ligands for lectins, which are carbohydrate-specific receptors. Bone is a complex tissue that provides mechanical support for muscles and joints, and the regulation of bone mass in mammals is governed by complex interplay between bone-forming cells, called osteoblasts, and bone-resorbing cells, called osteoclasts. Bone erosion occurs when bone resorption notably exceeds bone formation. Osteoclasts may be activated during cancer, leading to a range of symptoms, including bone pain, fracture, and spinal cord compression. Our understanding of the role of protein glycosylation in cells and tissues involved in osteoclastogenesis suggests that glycosylation-based treatments can be used in the management of diseases. The aims of this review are to clarify the process of bone resorption and investigate the signaling pathways mediated by glycosylation and their roles in osteoclast biology. Moreover, we aim to outline how the lessons learned about these approaches are paving the way for future glycobiology-focused therapeutics.
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Affiliation(s)
- Shufa Yang
- Prenatal Diagnostic Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, 100026, China
| | - Ziyi He
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Tuo Wu
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Shunlei Wang
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Hui Dai
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China.
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4
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Munir M, Embry A, Doench JG, Heaton NS, Wilen CB, Orchard RC. Genome-wide CRISPR activation screen identifies JADE3 as an antiviral activator of NF-kB. bioRxiv 2023:2023.09.29.560128. [PMID: 37808733 PMCID: PMC10557722 DOI: 10.1101/2023.09.29.560128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
The innate immune system features a web of interacting pathways that require exquisite regulation. To identify novel nodes in this immune landscape we conducted a gain of function, genome-wide CRISPR activation screen with influenza A virus. We identified both appreciated and novel antiviral genes, including JADE3 a protein involved in directing the histone acetyltransferase HBO1 complex to modify chromatin and regulate transcription. JADE3 is both necessary and sufficient to restrict influenza A virus infection. Interestingly, expression of the closely related paralogues JADE1 and JADE2 are unable to restrict influenza A virus infection, suggesting a distinct function of JADE3. We identify both shared and unique transcriptional signatures between uninfected cells expressing JADE3 and JADE2. These data provide a framework for understanding the overlapping and distinct functions of the JADE family of paralogues. Specifically, we find that JADE3 expression activates the NF-kB signaling pathway, consistent with an antiviral function. Therefore, we propose JADE3, but not JADE1 or JADE2, activates an antiviral genetic program involving the NF-kB pathway to restrict influenza A virus infection.
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Affiliation(s)
- Moiz Munir
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Aaron Embry
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - John G. Doench
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Nicholas S. Heaton
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Craig B. Wilen
- Departments of Laboratory Medicine and Immunobiology, Yale School of Medicine, New Haven, CT, USA
| | - Robert C. Orchard
- Departments of Immunology and Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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5
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Kadirvelraj R, Boruah BM, Wang S, Chapla D, Huang C, Ramiah A, Hudson KL, Prudden AR, Boons GJ, Withers SG, Wood ZA, Moremen KW. Structural basis for Lewis antigen synthesis by the α1,3-fucosyltransferase FUT9. Nat Chem Biol 2023; 19:1022-1030. [PMID: 37202521 PMCID: PMC10726971 DOI: 10.1038/s41589-023-01345-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 04/20/2023] [Indexed: 05/20/2023]
Abstract
Mammalian cell surface and secreted glycoproteins exhibit remarkable glycan structural diversity that contributes to numerous physiological and pathogenic interactions. Terminal glycan structures include Lewis antigens synthesized by a collection of α1,3/4-fucosyltransferases (CAZy GT10 family). At present, the only available crystallographic structure of a GT10 member is that of the Helicobacter pylori α1,3-fucosyltransferase, but mammalian GT10 fucosyltransferases are distinct in sequence and substrate specificity compared with the bacterial enzyme. Here, we determined crystal structures of human FUT9, an α1,3-fucosyltransferase that generates Lewisx and Lewisy antigens, in complex with GDP, acceptor glycans, and as a FUT9-donor analog-acceptor Michaelis complex. The structures reveal substrate specificity determinants and allow prediction of a catalytic model supported by kinetic analyses of numerous active site mutants. Comparisons with other GT10 fucosyltransferases and GT-B fold glycosyltransferases provide evidence for modular evolution of donor- and acceptor-binding sites and specificity for Lewis antigen synthesis among mammalian GT10 fucosyltransferases.
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Affiliation(s)
- Renuka Kadirvelraj
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA, USA
| | - Bhargavi M Boruah
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Shuo Wang
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Digantkumar Chapla
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Chin Huang
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Annapoorani Ramiah
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Kieran L Hudson
- Department of Biochemistry and Molecular Biology, Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
- Department of Chemistry, University of Georgia, Athens, GA, USA
| | - Stephen G Withers
- Department of Biochemistry and Molecular Biology, Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Zachary A Wood
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA, USA.
| | - Kelley W Moremen
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA, USA.
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.
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6
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Magdaleno JSL, Grewal RK, Medina-Franco JL, Oliva R, Shaikh AR, Cavallo L, Chawla M. Toward α-1,3/4 fucosyltransferases targeted drug discovery: In silico uncovering of promising natural inhibitors of fucosyltransferase 6. J Cell Biochem 2023; 124:1173-1185. [PMID: 37357420 DOI: 10.1002/jcb.30440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
Sialyl Lewis X (sLex ) antigen is a fucosylated cell-surface glycan that is normally involved in cell-cell interactions. The enhanced expression of sLex on cell surface glycans, which is attributed to the upregulation of fucosyltransferase 6 (FUT6), has been implicated in facilitating metastasis in human colorectal, lung, prostate, and oral cancers. The role that the upregulated FUT6 plays in the progression of tumor to malignancy, with reduced survival rates, makes it a potential target for anticancer drugs. Unfortunately, the lack of experimental structures for FUT6 has hampered the design and development of its inhibitors. In this study, we used in silico techniques to identify potential FUT6 inhibitors. We first modeled the three-dimensional structure of human FUT6 using AlphaFold. Then, we screened the natural compound libraries from the COCONUT database to sort out potential natural products (NPs) with best affinity toward the FUT6 model. As a result of these simulations, we identified three NPs for which we predicted binding affinities and interaction patterns quite similar to those we calculated for two experimentally tested FUT6 inhibitors, that is, fucose mimetic-1 and a GDP-triazole derived compound. We also performed molecular dynamics (MD) simulations for the FUT6 complexes with identified NPs, to investigate their stability. Analysis of the MD simulations showed that the identified NPs establish stable contacts with FUT6 under dynamics conditions. On these grounds, the three screened compounds appear as promising natural alternatives to experimentally tested FUT6 synthetic inhibitors, with expected comparable binding affinity. This envisages good prospects for future experimental validation toward FUT6 inhibition.
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Affiliation(s)
- Jorge Samuel Leon Magdaleno
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Ravneet K Grewal
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - José L Medina-Franco
- Department of Pharmacy, DIFACQUIM Research Group, School of Chemistry, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Romina Oliva
- Department of Sciences and Technologies, University Parthenope of Naples, Naples, Italy
| | - Abdul Rajjak Shaikh
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Luigi Cavallo
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Mohit Chawla
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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7
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Melamed J, Brockhausen I. Biosynthesis of the O antigen of pathogenic Escherichia coli O157:H7. Characterization of α1,4-Fuc-transferase WbdO. Glycobiology 2023; 33:165-175. [PMID: 36715215 DOI: 10.1093/glycob/cwac079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 01/31/2023] Open
Abstract
The O157:H7 strain of Escherichia coli is responsible for frequent outbreaks of hemorrhagic colitis worldwide. Its lipopolysaccharide is a virulence factor and contains an O antigen having repeating units with the tetrasaccharide structure [2-D-PerNAcα1-3-L-Fucα1-4-D-Glcβ1-3-D-GalNAcα1-]n. Genes encoding glycosyltransferases WbdN, WbdO, and WbdP are responsible for the biosynthesis of this repeating unit. We have previously characterized the second enzyme in the pathway, WbdN, which transfers Glc in β1-3 linkage to GalNAcα-O-PO3-PO3-(CH2)11-O-Ph (GalNAc-PP-PhU). In this work, Fuc-transferase WbdO from E. coli O157:H7 expressed in BL21 bacteria was characterized using the product of WbdN as the acceptor substrate. We showed that WbdO is specific for GDP-β-L-Fuc as the donor substrate. Compounds that contained terminal Glc or Glcβ1-3GalNAc structures but lacked the diphosphate group did not serve as acceptor substrates. The structure of the WbdO product was identified by mass spectrometry and Nuclear magnetic resonance (NMR) as L-Fucα1-4-D-Glcβ1-3-D-GalNAc PP-PhU. WbdO is an unusual bivalent metal ion-dependent Fuc-transferase classified as an inverting GT2 family enzyme that has 2 conserved sequences near the N-terminus. The Asp37 residue within the 36VDGGSTD42 sequence was found to be essential for catalysis. Mutation of Asp68 to Ala within the conserved 67YDAMNK72 sequence resulted in a 3-fold increase in activity. These studies show that WbdOO157 is a highly specific Fuc-transferase with little homology to other characterized Fuc-transferases.
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Affiliation(s)
- Jacob Melamed
- Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, ON K7L3N6, Canada
| | - Inka Brockhausen
- Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, ON K7L3N6, Canada
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8
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Abstract
Both the cascade whereby a blood-borne cell enters a tissue and the anchoring of hematopoietic stem/progenitor cells (HSPCs) within bone marrow critically pivots on cell-cell interactions mediated by E-selectin binding to its canonical carbohydrate ligand, the tetrasaccharide termed "sialylated Lewis X" (sLeX). E-selectin, a member of the selectin class of adhesion molecules that is exclusively expressed by vascular endothelium, engages sLeX-bearing glycoconjugates that adorn mature leukocytes and HSPCs, as well as malignant cells, thereby permitting these cells to extravasate into various tissues. E-selectin expression is induced on microvascular endothelial cells within inflammatory loci at all tissues. However, conspicuously, E-selectin is constitutively expressed within microvessels in skin and marrow and, additionally, is inducibly expressed at these sites. Within the marrow, E-selectin receptor/ligand interactions promote lodgment of HSPCs and their malignant counterparts within hematopoietic growth-promoting microenvironments, collectively known as "vascular niches". Indeed, E-selectin receptor/ligand interactions have been reported to regulate both hematopoietic stem, and leukemic, cell proliferative dynamics. As such, signaling induced via engagement of E-selectin ligands is gaining interest as a critical mediator of homeostatic and malignant hematopoiesis, and this review will present current perspectives on the glycoconjugates mediating E-selectin receptor/ligand interactions and their currently defined role(s) in leukemogenesis.
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Affiliation(s)
- Evan Ales
- Department of Translational Medicine & The Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Robert Sackstein
- Department of Translational Medicine & The Translational Glycobiology Institute, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States.
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9
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Abstract
Glycoconjugates are major constituents of mammalian cells that are formed via covalent conjugation of carbohydrates to other biomolecules like proteins and lipids and often expressed on the cell surfaces. Among the three major classes of glycoconjugates, proteoglycans and glycoproteins contain glycans linked to the protein backbone via amino acid residues such as Asn for N-linked glycans and Ser/Thr for O-linked glycans. In glycolipids, glycans are linked to a lipid component such as glycerol, polyisoprenyl pyrophosphate, fatty acid ester, or sphingolipid. Recently, glycoconjugates have become better structurally defined and biosynthetically understood, especially those associated with human diseases, and are accessible to new drug, diagnostic, and therapeutic developments. This review describes the status and new advances in the biological study and therapeutic applications of natural and synthetic glycoconjugates, including proteoglycans, glycoproteins, and glycolipids. The scope, limitations, and novel methodologies in the synthesis and clinical development of glycoconjugates including vaccines, glyco-remodeled antibodies, glycan-based adjuvants, glycan-specific receptor-mediated drug delivery platforms, etc., and their future prospectus are discussed.
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Affiliation(s)
- Sachin S Shivatare
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Vidya S Shivatare
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Chi-Huey Wong
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
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10
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Yang L, Liu L, Cheng J, Wu Z, Bao W, Wu S. Association analysis of DNA methylation and the tissue/developmental expression of the FUT3 gene in Meishan pigs. Gene 2022; 851:147016. [DOI: 10.1016/j.gene.2022.147016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/08/2022] [Accepted: 10/25/2022] [Indexed: 11/04/2022]
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11
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Conze DB, Kruger CL, Symonds JM, Lodder R, Schönknecht YB, Ho M, Derya SM, Parkot J, Parschat K. Weighted analysis of 2'-fucosylactose, 3-fucosyllactose, lacto-N-tetraose, 3'-sialyllactose, and 6'-sialyllactose concentrations in human milk. Food Chem Toxicol 2022;:112877. [PMID: 35304182 DOI: 10.1016/j.fct.2022.112877] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 11/22/2022]
Abstract
Over 150 human milk oligosaccharides (HMOs) have been identified and their concentrations in human milk vary depending on Secretor and Lewis blood group status, environmental and geographical factors, lactation stage, gestational period, and maternal health. Quantitation of HMOs in human milk has been the focus of numerous studies, however, comprehensive and weighted statistical analyses of their levels in human milk are lacking. Therefore, weighted means, standard deviations, medians, interquartile ranges, and 90th percentiles for 2'-fucosyllactose (2'-FL), 3-fucosyllactose (3-FL), lacto-N-tetraose (LNT), 3'-sialyllactose (3'-SL) and 6'-sialyllactose (6'-SL) were calculated using random sampling and the levels of these HMOs in human milk reported in the literature. Probability distributions of the reported levels were also constructed. Although the levels reported in the published studies varied, the weighted means for 2'-FL, 3-FL, LNT, 3'-SL, and 6'-SL were calculated to be 2.58, 0.57, 0.94, 0.28, and 0.39 g/L, respectively, which are consistent with those that have been previously determined in other systematic analyses. Likely due to the use of weighting, the 90th percentiles were greater than the 95% confidence limits that have been previously calculated. Our study therefore provides accurate and important statistical data to help support the level of appropriate HMO supplementation in infant formula.
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12
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Tvaroška I. Glycosyltransferases as targets for therapeutic intervention in cancer and inflammation: molecular modeling insights. Chem Pap 2022. [DOI: 10.1007/s11696-021-02026-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Tomek MB, Janesch B, Braun ML, Taschner M, Figl R, Grünwald-Gruber C, Coyne MJ, Blaukopf M, Altmann F, Kosma P, Kählig H, Comstock LE, Schäffer C. A Combination of Structural, Genetic, Phenotypic and Enzymatic Analyses Reveals the Importance of a Predicted Fucosyltransferase to Protein O-Glycosylation in the Bacteroidetes. Biomolecules 2021; 11:1795. [PMID: 34944439 PMCID: PMC8698959 DOI: 10.3390/biom11121795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/20/2022] Open
Abstract
Diverse members of the Bacteroidetes phylum have general protein O-glycosylation systems that are essential for processes such as host colonization and pathogenesis. Here, we analyzed the function of a putative fucosyltransferase (FucT) family that is widely encoded in Bacteroidetes protein O-glycosylation genetic loci. We studied the FucT orthologs of three Bacteroidetes species-Tannerella forsythia, Bacteroides fragilis, and Pedobacter heparinus. To identify the linkage created by the FucT of B. fragilis, we elucidated the full structure of its nine-sugar O-glycan and found that l-fucose is linked β1,4 to glucose. Of the two fucose residues in the T. forsythia O-glycan, the fucose linked to the reducing-end galactose was shown by mutational analysis to be l-fucose. Despite the transfer of l-fucose to distinct hexose sugars in the B. fragilis and T. forsythia O-glycans, the FucT orthologs from B. fragilis, T. forsythia, and P. heparinus each cross-complement the B. fragilis ΔBF4306 and T. forsythia ΔTanf_01305 FucT mutants. In vitro enzymatic analyses showed relaxed acceptor specificity of the three enzymes, transferring l-fucose to various pNP-α-hexoses. Further, glycan structural analysis together with fucosidase assays indicated that the T. forsythia FucT links l-fucose α1,6 to galactose. Given the biological importance of fucosylated carbohydrates, these FucTs are promising candidates for synthetic glycobiology.
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Affiliation(s)
- Markus B. Tomek
- NanoGlycobiology Unit, Institute of Biologically Inspired Materials, Department of NanoBiotechnology, Universität für Bodenkultur Wien, Muthgasse 11, A-1190 Vienna, Austria; (M.B.T.); (B.J.); (M.L.B.); (M.T.)
| | - Bettina Janesch
- NanoGlycobiology Unit, Institute of Biologically Inspired Materials, Department of NanoBiotechnology, Universität für Bodenkultur Wien, Muthgasse 11, A-1190 Vienna, Austria; (M.B.T.); (B.J.); (M.L.B.); (M.T.)
| | - Matthias L. Braun
- NanoGlycobiology Unit, Institute of Biologically Inspired Materials, Department of NanoBiotechnology, Universität für Bodenkultur Wien, Muthgasse 11, A-1190 Vienna, Austria; (M.B.T.); (B.J.); (M.L.B.); (M.T.)
| | - Manfred Taschner
- NanoGlycobiology Unit, Institute of Biologically Inspired Materials, Department of NanoBiotechnology, Universität für Bodenkultur Wien, Muthgasse 11, A-1190 Vienna, Austria; (M.B.T.); (B.J.); (M.L.B.); (M.T.)
| | - Rudolf Figl
- Institute of Biochemistry, Department of Chemistry, Universität für Bodenkultur Wien, Muthgasse 18, A-1190 Vienna, Austria; (R.F.); (C.G.-G.); (F.A.)
| | - Clemens Grünwald-Gruber
- Institute of Biochemistry, Department of Chemistry, Universität für Bodenkultur Wien, Muthgasse 18, A-1190 Vienna, Austria; (R.F.); (C.G.-G.); (F.A.)
| | - Michael J. Coyne
- Department of Microbiology and the Duchossois Family Institute, University of Chicago, KCBD, 900 E. 57th Street, Chicago, IL 60637, USA; (M.J.C.); (L.E.C.)
| | - Markus Blaukopf
- Institute of Organic Chemistry, Department of Chemistry, Universität für Bodenkultur Wien, Muthgasse 18, A-1190 Vienna, Austria; (M.B.); (P.K.)
| | - Friedrich Altmann
- Institute of Biochemistry, Department of Chemistry, Universität für Bodenkultur Wien, Muthgasse 18, A-1190 Vienna, Austria; (R.F.); (C.G.-G.); (F.A.)
| | - Paul Kosma
- Institute of Organic Chemistry, Department of Chemistry, Universität für Bodenkultur Wien, Muthgasse 18, A-1190 Vienna, Austria; (M.B.); (P.K.)
| | - Hanspeter Kählig
- Department of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria;
| | - Laurie E. Comstock
- Department of Microbiology and the Duchossois Family Institute, University of Chicago, KCBD, 900 E. 57th Street, Chicago, IL 60637, USA; (M.J.C.); (L.E.C.)
| | - Christina Schäffer
- NanoGlycobiology Unit, Institute of Biologically Inspired Materials, Department of NanoBiotechnology, Universität für Bodenkultur Wien, Muthgasse 11, A-1190 Vienna, Austria; (M.B.T.); (B.J.); (M.L.B.); (M.T.)
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14
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Abstract
The extraordinary diversity of glycans leads to large differences in the glycomes of different kingdoms of life. Yet, while most monosaccharides are solely found in certain taxonomic groups, there is a small set of monosaccharides with widespread distribution across nearly all domains of life. These general monosaccharides are particularly relevant for glycan motifs, as they can readily be used by commensals and pathogens to mimic host glycans or hijack existing glycan recognition systems. Among these, the monosaccharide fucose is especially interesting, as it frequently presents itself as a terminal monosaccharide, primed for interaction with proteins. Here, we analyze fucose-containing glycan motifs across all taxonomic kingdoms. Using a hereby presented large species-specific glycan dataset and a plethora of methods for glycan-focused bioinformatics and machine learning, we identify characteristic as well as shared fucose-containing glycan motifs for various taxonomic groups, demonstrating clear differences in fucose usage. Even within domains, fucose is used differentially based on an organism’s physiology and habitat. We particularly highlight differences in fucose-containing motifs between vertebrates and invertebrates. With the example of pathogenic and non-pathogenic Escherichia coli strains, we also demonstrate the importance of fucose-containing motifs in molecular mimicry and thereby pathogenic potential. We envision that this study will shed light on an important class of glycan motifs, with potential new insights into the role of fucosylated glycans in symbiosis, pathogenicity, and immunity.
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Affiliation(s)
- Luc Thomès
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Daniel Bojar
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden.,Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
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15
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Grewal RK, Shaikh AR, Gorle S, Kaur M, Videira PA, Cavallo L, Chawla M. Structural Insights in Mammalian Sialyltransferases and Fucosyltransferases: We Have Come a Long Way, but It Is Still a Long Way Down. Molecules 2021; 26:5203. [PMID: 34500643 DOI: 10.3390/molecules26175203] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 11/17/2022] Open
Abstract
Mammalian cell surfaces are modified with complex arrays of glycans that play major roles in health and disease. Abnormal glycosylation is a hallmark of cancer; terminal sialic acid and fucose in particular have high levels in tumor cells, with positive implications for malignancy. Increased sialylation and fucosylation are due to the upregulation of a set of sialyltransferases (STs) and fucosyltransferases (FUTs), which are potential drug targets in cancer. In the past, several advances in glycostructural biology have been made with the determination of crystal structures of several important STs and FUTs in mammals. Additionally, how the independent evolution of STs and FUTs occurred with a limited set of global folds and the diverse modular ability of catalytic domains toward substrates has been elucidated. This review highlights advances in the understanding of the structural architecture, substrate binding interactions, and catalysis of STs and FUTs in mammals. While this general understanding is emerging, use of this information to design inhibitors of STs and FUTs will be helpful in providing further insights into their role in the manifestation of cancer and developing targeted therapeutics in cancer.
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16
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Siziba LP, Mank M, Stahl B, Gonsalves J, Blijenberg B, Rothenbacher D, Genuneit J. Human Milk Oligosaccharide Profiles over 12 Months of Lactation: The Ulm SPATZ Health Study. Nutrients 2021; 13:nu13061973. [PMID: 34201331 PMCID: PMC8228739 DOI: 10.3390/nu13061973] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 12/16/2022] Open
Abstract
Human milk oligosaccharides (HMOs) have specific dose-dependent effects on child health outcomes. The HMO profile differs across mothers and is largely dependent on gene expression of specific transferase enzymes in the lactocytes. This study investigated the trajectories of absolute HMO concentrations at three time points during lactation, using a more accurate, robust, and extensively validated method for HMO quantification. We analyzed human milk sampled at 6 weeks (n = 682), 6 months (n = 448), and 12 months (n = 73) of lactation in a birth cohort study conducted in south Germany, using label-free targeted liquid chromatography mass spectrometry (LC-MS2). We assessed trajectories of HMO concentrations over time and used linear mixed models to explore the effect of secretor status and milk group on these trajectories. Generalized linear model-based analysis was used to examine associations between HMOs measured at 6 weeks of lactation and maternal characteristics. Results: Overall, 74%, 18%, 7%, and 1% of human milk samples were attributed to milk groups I, II, III, and IV, respectively. Most HMO concentrations declined over lactation, but some increased. Cross-sectionally, HMOs presented high variations within milk groups and secretor groups. The trajectories of HMO concentrations during lactation were largely attributed to the milk group and secretor status. None of the other maternal characteristics were associated with the HMO concentrations. The observed changes in the HMO concentrations at different time points during lactation and variations of HMOs between milk groups warrant further investigation of their potential impact on child health outcomes. These results will aid in the evaluation and determination of adequate nutrient intakes, as well as further (or future) investigation of the dose-dependent impact of these biological components on infant and child health outcomes.
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Affiliation(s)
- Linda P. Siziba
- Pediatric Epidemiology, Department of Paediatrics, Medical Faculty, Leipzig University, 04103 Leipzig, Germany;
- Correspondence: ; Tel.: +49-34-1972-4181
| | - Marko Mank
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (M.M.); (B.S.); (J.G.); (B.B.)
| | - Bernd Stahl
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (M.M.); (B.S.); (J.G.); (B.B.)
- Department of Chemical Biology & Drug Discovery, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - John Gonsalves
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (M.M.); (B.S.); (J.G.); (B.B.)
| | - Bernadet Blijenberg
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (M.M.); (B.S.); (J.G.); (B.B.)
| | | | - Jon Genuneit
- Pediatric Epidemiology, Department of Paediatrics, Medical Faculty, Leipzig University, 04103 Leipzig, Germany;
- Institute of Epidemiology and Medical Biometry, Ulm University, 89075 Ulm, Germany;
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17
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Abstract
Establishment of neural circuits requires reproducible and precise interactions between growing axons, dendrites and their tissue environment. Cell adhesion molecules and guidance factors are involved in the process, but how specificity is achieved remains poorly understood. Glycans are the third major class of biopolymers besides nucleic acids and proteins, and are usually covalently linked to proteins to form glycoconjugates. Common to most glycans is an extraordinary level of molecular diversity, making them attractive candidates to contribute specificity during neural development. Indeed, many genes important for neural development encode glycoproteins, or enzymes involved in synthesizing or modifying glycans. Glycoconjugates are classified based on both the types of glycans and type of attachment that link them to proteins. Here I discuss progress in understanding the function of glycans, glycan modifications and glycoconjugates during neural development in Caenorhabditis elegans. I will also highlight relevance to human disease and known roles of glycoconjugates in regeneration.
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Affiliation(s)
- Hannes E Bülow
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, United States; Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, United States.
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18
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Zhou W, Jiang H, Wang L, Liang X, Mao X. Biotechnological Production of 2'-Fucosyllactose: A Prevalent Fucosylated Human Milk Oligosaccharide. ACS Synth Biol 2021; 10:447-458. [PMID: 33687208 DOI: 10.1021/acssynbio.0c00645] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Human milk oligosaccharide (HMO) is a key component of human milk carbohydrates and is closely related to the nutrition and health benefits of breastfeeding in infants. 2'-Fucosyllactose (2'-FL) is the most abundant fucosylated HMO, which has remarkable value in nutrition and medicine, such as suppressing pathogen infection, regulating intestinal flora, and boosting immunity. However, 2'-FL production via the method of extraction or chemical synthesis cannot meet its large demand, and as a result, environmentally friendly and efficient biotechnological approaches, including in vitro enzymatic synthesis and microbial cell factory production, have been developed and applied to its commercialized production. This review introduces, summarizes, and discusses the recent advances in the biotechnological production of 2'-FL. Furthermore, future research directions for the biotechnological production of 2'-FL as well as the strategies to further improve its concentration are highlighted and discussed.
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Affiliation(s)
- Wenting Zhou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Hong Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Lili Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xingxing Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
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19
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Narimatsu Y, Büll C, Chen YH, Wandall HH, Yang Z, Clausen H. Genetic glycoengineering in mammalian cells. J Biol Chem 2021; 296:100448. [PMID: 33617880 DOI: 10.1016/j.jbc.2021.100448] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023] Open
Abstract
Advances in nuclease-based gene-editing technologies have enabled precise, stable, and systematic genetic engineering of glycosylation capacities in mammalian cells, opening up a plethora of opportunities for studying the glycome and exploiting glycans in biomedicine. Glycoengineering using chemical, enzymatic, and genetic approaches has a long history, and precise gene editing provides a nearly unlimited playground for stable engineering of glycosylation in mammalian cells to explore and dissect the glycome and its many biological functions. Genetic engineering of glycosylation in cells also brings studies of the glycome to the single cell level and opens up wider use and integration of data in traditional omics workflows in cell biology. The last few years have seen new applications of glycoengineering in mammalian cells with perspectives for wider use in basic and applied glycosciences, and these have already led to discoveries of functions of glycans and improved designs of glycoprotein therapeutics. Here, we review the current state of the art of genetic glycoengineering in mammalian cells and highlight emerging opportunities.
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20
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Boruah BM, Kadirvelraj R, Liu L, Ramiah A, Li C, Zong G, Bosman GP, Yang JY, Wang LX, Boons GJ, Wood ZA, Moremen KW. Characterizing human α-1,6-fucosyltransferase (FUT8) substrate specificity and structural similarities with related fucosyltransferases. J Biol Chem 2020; 295:17027-17045. [PMID: 33004438 PMCID: PMC7863877 DOI: 10.1074/jbc.ra120.014625] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/28/2020] [Indexed: 12/18/2022] Open
Abstract
Mammalian Asn-linked glycans are extensively processed as they transit the secretory pathway to generate diverse glycans on cell surface and secreted glycoproteins. Additional modification of the glycan core by α-1,6-fucose addition to the innermost GlcNAc residue (core fucosylation) is catalyzed by an α-1,6-fucosyltransferase (FUT8). The importance of core fucosylation can be seen in the complex pathological phenotypes of FUT8 null mice, which display defects in cellular signaling, development, and subsequent neonatal lethality. Elevated core fucosylation has also been identified in several human cancers. However, the structural basis for FUT8 substrate specificity remains unknown.Here, using various crystal structures of FUT8 in complex with a donor substrate analog, and with four distinct glycan acceptors, we identify the molecular basis for FUT8 specificity and activity. The ordering of three active site loops corresponds to an increased occupancy for bound GDP, suggesting an induced-fit folding of the donor-binding subsite. Structures of the various acceptor complexes were compared with kinetic data on FUT8 active site mutants and with specificity data from a library of glycan acceptors to reveal how binding site complementarity and steric hindrance can tune substrate affinity. The FUT8 structure was also compared with other known fucosyltransferases to identify conserved and divergent structural features for donor and acceptor recognition and catalysis. These data provide insights into the evolution of modular templates for donor and acceptor recognition among GT-B fold glycosyltransferases in the synthesis of diverse glycan structures in biological systems.
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Affiliation(s)
- Bhargavi M Boruah
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Renuka Kadirvelraj
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA
| | - Lin Liu
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Annapoorani Ramiah
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Chao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Guanghui Zong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Gerlof P Bosman
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA; Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Utrecht Institute for Pharmaceutical Sciences, Utrecht, The Netherlands
| | - Zachary A Wood
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.
| | - Kelley W Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia, USA.
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21
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Muthu M, Chun S, Gopal J, Anthonydhason V, Haga SW, Jacintha Prameela Devadoss A, Oh JW. Insights into Bioinformatic Applications for Glycosylation: Instigating an Awakening towards Applying Glycoinformatic Resources for Cancer Diagnosis and Therapy. Int J Mol Sci 2020; 21:E9336. [PMID: 33302373 DOI: 10.3390/ijms21249336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/26/2020] [Accepted: 12/01/2020] [Indexed: 01/10/2023] Open
Abstract
Glycosylation plays a crucial role in various diseases and their etiology. This has led to a clear understanding on the functions of carbohydrates in cell communication, which eventually will result in novel therapeutic approaches for treatment of various disease. Glycomics has now become one among the top ten technologies that will change the future. The direct implication of glycosylation as a hallmark of cancer and for cancer therapy is well established. As in proteomics, where bioinformatics tools have led to revolutionary achievements, bioinformatics resources for glycosylation have improved its practical implication. Bioinformatics tools, algorithms and databases are a mandatory requirement to manage and successfully analyze large amount of glycobiological data generated from glycosylation studies. This review consolidates all the available tools and their applications in glycosylation research. The achievements made through the use of bioinformatics into glycosylation studies are also presented. The importance of glycosylation in cancer diagnosis and therapy is discussed and the gap in the application of widely available glyco-informatic tools for cancer research is highlighted. This review is expected to bring an awakening amongst glyco-informaticians as well as cancer biologists to bridge this gap, to exploit the available glyco-informatic tools for cancer.
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22
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van Noort K, Nguyen DL, Kriechbaumer V, Hawes C, Hokke CH, Schots A, Wilbers RHP. Functional characterization of Schistosoma mansoni fucosyltransferases in Nicotiana benthamiana plants. Sci Rep 2020; 10:18528. [PMID: 33116178 PMCID: PMC7595089 DOI: 10.1038/s41598-020-74485-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022] Open
Abstract
Helminth parasites secrete a wide variety of immunomodulatory proteins and lipids to dampen host immune responses. Many of these immunomodulatory compounds are modified with complex sugar structures (or glycans), which play an important role at the host-parasite interface. As an example, the human blood fluke Schistosoma mansoni produces highly fucosylated glycan structures on glycoproteins and glycolipids. Up to 20 different S. mansoni fucosyltransferase (SmFucT) genes can be found in genome databases, but thus far only one enzyme has been functionally characterized. To unravel the synthesis of highly fucosylated N-glycans by S. mansoni, we examined the ability of ten selected SmFucTs to modify N-glycans upon transient expression in Nicotiana benthamiana plants. All enzymes were localized in the plant Golgi apparatus, which allowed us to identify the SmFucTs involved in core fucosylation and the synthesis of complex antennary glycan motifs. This knowledge provides a starting point for investigations into the role of specific fucosylated glycan motifs of schistosomes in parasite-host interactions. The functionally characterized SmFucTs can also be applied to synthesize complex N-glycan structures on recombinant proteins to study their contribution to immunomodulation. Furthermore, this plant expression system will fuel the development of helminth glycoproteins for pharmaceutical applications or novel anti-helminth vaccines.
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Affiliation(s)
- Kim van Noort
- Laboratory of Nematology, Plant Sciences Group, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Dieu-Linh Nguyen
- Department of Parasitology, Leiden University Medical Center, Albinusdreef, 2333 ZA, Leiden, The Netherlands
| | - Verena Kriechbaumer
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK
| | - Chris Hawes
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK
| | - Cornelis H Hokke
- Department of Parasitology, Leiden University Medical Center, Albinusdreef, 2333 ZA, Leiden, The Netherlands
| | - Arjen Schots
- Laboratory of Nematology, Plant Sciences Group, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Ruud H P Wilbers
- Laboratory of Nematology, Plant Sciences Group, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.
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23
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Schjoldager KT, Narimatsu Y, Joshi HJ, Clausen H. Global view of human protein glycosylation pathways and functions. Nat Rev Mol Cell Biol 2020; 21:729-49. [PMID: 33087899 DOI: 10.1038/s41580-020-00294-x] [Citation(s) in RCA: 481] [Impact Index Per Article: 120.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2020] [Indexed: 02/07/2023]
Abstract
Glycosylation is the most abundant and diverse form of post-translational modification of proteins that is common to all eukaryotic cells. Enzymatic glycosylation of proteins involves a complex metabolic network and different types of glycosylation pathways that orchestrate enormous amplification of the proteome in producing diversity of proteoforms and its biological functions. The tremendous structural diversity of glycans attached to proteins poses analytical challenges that limit exploration of specific functions of glycosylation. Major advances in quantitative transcriptomics, proteomics and nuclease-based gene editing are now opening new global ways to explore protein glycosylation through analysing and targeting enzymes involved in glycosylation processes. In silico models predicting cellular glycosylation capacities and glycosylation outcomes are emerging, and refined maps of the glycosylation pathways facilitate genetic approaches to address functions of the vast glycoproteome. These approaches apply commonly available cell biology tools, and we predict that use of (single-cell) transcriptomics, genetic screens, genetic engineering of cellular glycosylation capacities and custom design of glycoprotein therapeutics are advancements that will ignite wider integration of glycosylation in general cell biology.
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24
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Mank M, Hauner H, Heck AJR, Stahl B. Targeted LC-ESI-MS 2 characterization of human milk oligosaccharide diversity at 6 to 16 weeks post-partum reveals clear staging effects and distinctive milk groups. Anal Bioanal Chem 2020; 412:6887-6907. [PMID: 32794008 PMCID: PMC7496073 DOI: 10.1007/s00216-020-02819-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/03/2020] [Accepted: 07/14/2020] [Indexed: 12/17/2022]
Abstract
Many molecular components in human milk (HM), such as human milk oligosaccharides (HMOs), assist in the healthy development of infants. It has been hypothesized that the functional benefits of HM may be highly dependent on the abundance and individual fine structures of contained HMOs and that distinctive HM groups can be defined by their HMO profiles. However, the structural diversity and abundances of individual HMOs may also vary between milk donors and at different stages of lactations. Improvements in efficiency and selectivity of quantitative HMO analysis are essential to further expand our understanding about the impact of HMO variations on healthy early life development. Hence, we applied here a targeted, highly selective, and semi-quantitative LC-ESI-MS2 approach by analyzing 2 × 30 mature human milk samples collected at 6 and 16 weeks post-partum. The analytical approach covered the most abundant HMOs up to hexasaccharides and, for the first time, also assigned blood group A and B tetrasaccharides. Principal component analysis (PCA) was employed and allowed for automatic grouping and assignment of human milk samples to four human milk groups which are related to the maternal Secretor (Se) and Lewis (Le) genotypes. We found that HMO diversity varied significantly between these four HM groups. Variations were driven by HMOs being either dependent or independent of maternal genetic Se and Le status. We found preliminary evidence for an additional HM subgroup within the Se- and Le-positive HM group I. Furthermore, the abundances of 6 distinct HMO structures (including 6'-SL and 3-FL) changed significantly with progression of lactation. Graphical abstract.
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Affiliation(s)
- Marko Mank
- Danone Nutricia Research, Uppsalalaan 12, 3584 CT, Utrecht, The Netherlands.
| | - Hans Hauner
- Else Kröner-Fresenius Center for Nutritional Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675, Munich, Germany.,Nutritional Medicine Unit, Research Center for Nutrition and Food Sciences (ZIEL), Technische Universität München, Weihenstephaner Berg 1, 85354, Freising, Germany
| | - Albert J R Heck
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584 CH, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Bernd Stahl
- Danone Nutricia Research, Uppsalalaan 12, 3584 CT, Utrecht, The Netherlands.,Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
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25
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Liu M, Cheng X, Wang J, Tian D, Tang K, Xu T, Zhang M, Wang Y, Wang M. Structural insights into the fungi-nematodes interaction mediated by fucose-specific lectin AofleA from Arthrobotrys oligospora. Int J Biol Macromol 2020; 164:783-793. [PMID: 32698064 DOI: 10.1016/j.ijbiomac.2020.07.173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 12/22/2022]
Abstract
Fungal lectin can bind specific carbohydrate structures of the host and work in recognition and adhesion or as a toxic factor. AofleA, as a fucose-specific lectin from widely studied nematode predatory fungus Arthrobotrys oligospora, possibly plays a key role in the event of capturing nematodes, but the mechanism remains unknown. Here we report the crystal structure of AofleA, which exists as a homodimer with each subunit folds as a six-bladed β-propeller. Our structural and biological results revealed that three of the six putative binding sites of AofleA had fucose-binding abilities. In addition, we found that AofleA could bind to the pharynx and intestine of the nematode in a fucose-binding-dependent manner. Our results facilitate the understanding of the mechanism that fucose-specific lectin mediates fungi-nematodes interaction, and provide structural information for the development of potential applications of AofleA.
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Affiliation(s)
- Mingjie Liu
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Xiaowen Cheng
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China
| | - Junchao Wang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Dongrui Tian
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Kaijing Tang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Ting Xu
- School of Life Sciences, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Min Zhang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Yongzhong Wang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China
| | - Mingzhu Wang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China.
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Tvaroška I, Selvaraj C, Koča J. Selectins-The Two Dr. Jekyll and Mr. Hyde Faces of Adhesion Molecules-A Review. Molecules 2020; 25:molecules25122835. [PMID: 32575485 PMCID: PMC7355470 DOI: 10.3390/molecules25122835] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/27/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
Selectins belong to a group of adhesion molecules that fulfill an essential role in immune and inflammatory responses and tissue healing. Selectins are glycoproteins that decode the information carried by glycan structures, and non-covalent interactions of selectins with these glycan structures mediate biological processes. The sialylated and fucosylated tetrasaccharide sLex is an essential glycan recognized by selectins. Several glycosyltransferases are responsible for the biosynthesis of the sLex tetrasaccharide. Selectins are involved in a sequence of interactions of circulated leukocytes with endothelial cells in the blood called the adhesion cascade. Recently, it has become evident that cancer cells utilize a similar adhesion cascade to promote metastases. However, like Dr. Jekyll and Mr. Hyde’s two faces, selectins also contribute to tissue destruction during some infections and inflammatory diseases. The most prominent function of selectins is associated with the initial stage of the leukocyte adhesion cascade, in which selectin binding enables tethering and rolling. The first adhesive event occurs through specific non-covalent interactions between selectins and their ligands, with glycans functioning as an interface between leukocytes or cancer cells and the endothelium. Targeting these interactions remains a principal strategy aimed at developing new therapies for the treatment of immune and inflammatory disorders and cancer. In this review, we will survey the significant contributions to and the current status of the understanding of the structure of selectins and the role of selectins in various biological processes. The potential of selectins and their ligands as therapeutic targets in chronic and acute inflammatory diseases and cancer will also be discussed. We will emphasize the structural characteristic of selectins and the catalytic mechanisms of glycosyltransferases involved in the biosynthesis of glycan recognition determinants. Furthermore, recent achievements in the synthesis of selectin inhibitors will be reviewed with a focus on the various strategies used for the development of glycosyltransferase inhibitors, including substrate analog inhibitors and transition state analog inhibitors, which are based on knowledge of the catalytic mechanism.
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Affiliation(s)
- Igor Tvaroška
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
- Institute of Chemistry, Slovak Academy of Sciences, 84538 Bratislava, Slovak Republic
- Correspondence: (I.T.); (J.K.); Tel.: +421-948-535-601 (I.T.); +420-731-682-606 (J.K.)
| | - Chandrabose Selvaraj
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
| | - Jaroslav Koča
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
- Correspondence: (I.T.); (J.K.); Tel.: +421-948-535-601 (I.T.); +420-731-682-606 (J.K.)
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Ihara H, Okada T, Taniguchi N, Ikeda Y. Involvement of the α-helical and Src homology 3 domains in the molecular assembly and enzymatic activity of human α1,6-fucosyltransferase, FUT8. Biochim Biophys Acta Gen Subj 2020; 1864:129596. [PMID: 32147455 DOI: 10.1016/j.bbagen.2020.129596] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/20/2020] [Accepted: 03/03/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND Previous structural analyses showed that human α1,6-fucosyltransferase, FUT8 contains a catalytic domain along with two additional domains, N-terminal α-helical domain and C-terminal Src homology 3 domain, but these domains are unique to FUT8 among glycosyltransferases. The role that these domains play in formation of the active form of FUT8 has not been investigated. This study reports on attempts to determine the involvement of these domains in the functions of FUT8. METHODS Based on molecular modeling, the domain mutants were constructed by truncation and site-directed mutagenesis, and were heterologously expressed in Sf21 or COS-1 cells. The mutants were analyzed by SDS-PAGE and assayed for enzymatic activity. In vivo cross-linking experiments by introducing disulfide bonds were also carried out to examine the orientation of the domains in the molecular assembly. RESULTS Mutagenesis and molecular modeling findings suggest that human FUT8 potentially forms homodimer in vivo via intermolecular hydrophobic interactions involving α-helical domains. Truncation or site-directed mutagenesis findings indicated that α-helical and SH3 domains are all required for enzymatic activity. In addition, in vivo cross-linking experiments clearly indicated that the SH3 domain located in close proximity to the α-helical domain in an intermolecular manner. CONCLUSIONS α-Helical and SH3 domains are required for a fully active enzyme, and are also involved in homophilic dimerization, which probably results in the formation of the active form of human FUT8. GENERAL SIGNIFICANCE α-Helical and SH3 domains, which are not commonly found in glycosyltransferases, play roles in the formation of the functional quaternary structure of human FUT8.
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Larsen JS, Karlsson RTG, Tian W, Schulz MA, Matthes A, Clausen H, Petersen BL, Yang Z. Engineering mammalian cells to produce plant-specific N-glycosylation on proteins. Glycobiology 2020; 30:528-538. [DOI: 10.1093/glycob/cwaa009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/30/2019] [Accepted: 02/05/2020] [Indexed: 02/06/2023] Open
Abstract
Abstract
Protein N-glycosylation is an essential and highly conserved posttranslational modification found in all eukaryotic cells. Yeast, plants and mammalian cells, however, produce N-glycans with distinct structural features. These species-specific features not only pose challenges in selecting host cells for production of recombinant therapeutics for human medical use but also provide opportunities to explore and utilize species-specific glycosylation in design of vaccines. Here, we used reverse cross-species engineering to stably introduce plant core α3fucose (α3Fuc) and β2xylose (β2Xyl) N-glycosylation epitopes in the mammalian Chinese hamster ovary (CHO) cell line. We used directed knockin of plant core fucosylation and xylosylation genes (AtFucTA/AtFucTB and AtXylT) and targeted knockout of endogenous genes for core fucosylation (fut8) and elongation (B4galt1), for establishing CHO cells with plant N-glycosylation capacities. The engineering was evaluated through coexpression of two human therapeutic N-glycoproteins, erythropoietin (EPO) and an immunoglobulin G (IgG) antibody. Full conversion to the plant-type α3Fuc/β2Xyl bi-antennary agalactosylated N-glycosylation (G0FX) was demonstrated for the IgG1 produced in CHO cells. These results demonstrate that N-glycosylation in mammalian cells is amenable for extensive cross-kingdom engineering and that engineered CHO cells may be used to produce glycoproteins with plant glycosylation.
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Affiliation(s)
- Joachim Steen Larsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, København, Denmark
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Richard Torbjörn Gustav Karlsson
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Weihua Tian
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Morten Alder Schulz
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Annemarie Matthes
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, København, Denmark
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Bent Larsen Petersen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, København, Denmark
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
| | - Zhang Yang
- Copenhagen Center for Glycomics, Department of Molecular and Cellular Medicine, Faculty of Health Sciences, University of Copenhagen, Nørregade 10, 1165 København, Denmark
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Park S, Lim JM, Chun JN, Lee S, Kim TM, Kim DW, Kim SY, Bae DJ, Bae SM, So I, Kim HG, Choi JY, Jeon JH. Altered expression of fucosylation pathway genes is associated with poor prognosis and tumor metastasis in non‑small cell lung cancer. Int J Oncol 2019; 56:559-567. [PMID: 31894325 PMCID: PMC6959459 DOI: 10.3892/ijo.2019.4953] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/25/2019] [Indexed: 12/28/2022] Open
Abstract
Fucosylation is a post‑translational modification that attaches fucose residues to protein‑ or lipid‑bound oligosaccharides. Certain fucosylation pathway genes are aberrantly expressed in several types of cancer, including non‑small cell lung cancer (NSCLC), and this aberrant expression is associated with poor prognosis in patients with cancer. However, the molecular mechanism by which these fucosylation pathway genes promote tumor progression has not been well‑characterized. The present study analyzed public microarray data obtained from NSCLC samples. Multivariate analysis revealed that altered expression of fucosylation pathway genes, including fucosyltransferase 1 (FUT1), FUT2, FUT3, FUT6, FUT8 and GDP‑L‑fucose synthase (TSTA3), correlated with poor survival in patients with NSCLC. Inhibition of FUTs by 2F‑peracetyl‑fucose (2F‑PAF) suppressed transforming growth factor β (TGFβ)‑mediated Smad3 phosphorylation and nuclear translocation in NSCLC cells. In addition, wound‑healing and Transwell migration assays demonstrated that 2F‑PAF inhibited TGFβ‑induced NSCLC cell migration and invasion. Furthermore, in vivo bioluminescence imaging analysis revealed that 2F‑PAF attenuated the metastatic capacity of NSCLC cells. These results may help characterize the oncogenic role of fucosylation in NSCLC biology and highlight its potential for developing cancer therapeutics.
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Affiliation(s)
- Soonbum Park
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Jin-Muk Lim
- Biomedical Knowledge Engineering Laboratory, Seoul National University, Seoul 08826, Republic of Korea
| | - Jung Nyeo Chun
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Sanghoon Lee
- Department of Biochemistry, University of
Utah School of Medicine, Salt Lake City, UT 84112‑5650, USA
| | - Tae Min Kim
- Seoul National University Cancer Research Institute, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Dong-Wan Kim
- Seoul National University Cancer Research Institute, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Sang-Yeob Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05535, Republic of Korea
| | - Dong-Jun Bae
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05535, Republic of Korea
| | - Sang-Mun Bae
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05535, Republic of Korea
| | - Insuk So
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hong-Gee Kim
- Biomedical Knowledge Engineering Laboratory, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji-Yeob Choi
- Seoul National University Cancer Research Institute, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Ju-Hong Jeon
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
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Sugahara D, Kobayashi Y, Akimoto Y, Kawakami H. Mouse intestinal niche cells express a distinct α1,2-fucosylated glycan recognized by a lectin from Burkholderia cenocepacia. Glycobiology 2018; 27:246-253. [PMID: 28177462 DOI: 10.1093/glycob/cww116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 11/04/2016] [Accepted: 11/17/2016] [Indexed: 01/23/2023] Open
Abstract
In this study, we examined the distribution of fucosylated glycans in mouse intestines using a lectin, BC2LCN (N-terminal domain of the lectin BC2L-C from Burkholderia cenocepacia), as a probe. BC2LCN is specific for glycans with a terminal Fucα1,2Galβ1,3-motif and it is a useful marker for discriminating the undifferentiated status of human induced/embryonic stem cells. Apparent BC2LCN reactivity was detected in the secretory granules of goblet cells in the ileum but not those in the colon. We also found distinctive reactivity in the crypt bottom, which is known as the stem cell zone, of the colon and the ileum. Other lectins for fucosylated glycans, including Ulex europaeus agglutinin-I, Pholiota squarrosa lectin and Aleuria aurantia lectin, did not exhibit similar reactivity in the crypt bottom. Remarkably, BC2LCN-positive epithelial cells could be labeled with a niche cell marker, c-Kit/CD117. Overall, our results indicate that intestinal niche cells express distinct fucosylated glycans recognized by BC2LCN. Increasing evidence suggests that the self-renewal and proliferation of stem cells depend on specific signals derived from niche cells. Our results highlight novel molecular properties of intestinal niche cells in terms of their glycosylation, which may help to understand the regulation of intestinal stem cells. The distinct expression of glycans may reflect the functional roles of niche cells. BC2LCN is a valuable tool for investigating the functional significance of protein glycosylation in stem cell regulation.
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Affiliation(s)
- Daisuke Sugahara
- Department of Anatomy, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Yuka Kobayashi
- J-Oil Mills, Inc., 11 Kagetoricho, Totsuka-ku, Yokohama, Kanagawa 245-0064, Japan
| | - Yoshihiro Akimoto
- Department of Anatomy, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Hayato Kawakami
- Department of Anatomy, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
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Nadeem T, Khan MA, Ijaz B, Ahmed N, Rahman ZU, Latif MS, Ali Q, Rana MA. Glycosylation of Recombinant Anticancer Therapeutics in Different Expression Systems with Emerging Technologies. Cancer Res 2018; 78:2787-2798. [DOI: 10.1158/0008-5472.can-18-0032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/22/2018] [Accepted: 04/03/2018] [Indexed: 11/16/2022]
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Carrascal MA, Silva M, Ramalho JS, Pen C, Martins M, Pascoal C, Amaral C, Serrano I, Oliveira MJ, Sackstein R, Videira PA. Inhibition of fucosylation in human invasive ductal carcinoma reduces E-selectin ligand expression, cell proliferation, and ERK1/2 and p38 MAPK activation. Mol Oncol 2018; 12:579-593. [PMID: 29215790 PMCID: PMC5928367 DOI: 10.1002/1878-0261.12163] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 10/09/2017] [Accepted: 11/13/2017] [Indexed: 01/08/2023] Open
Abstract
Breast cancer tissue overexpresses fucosylated glycans, such as sialyl-Lewis X/A (sLeX/A ), and α-1,3/4-fucosyltransferases (FUTs) in relation to increased disease progression and metastasis. These glycans in tumor circulating cells mediate binding to vascular E-selectin, initiating tumor extravasation. However, their role in breast carcinogenesis is still unknown. Here, we aimed to define the contribution of the fucosylated structures, including sLeX/A , to cell adhesion, cell signaling, and cell proliferation in invasive ductal carcinomas (IDC), the most frequent type of breast cancer. We first analyzed expression of E-selectin ligands in IDC tissue and established primary cell cultures from the tissue. We observed strong reactivity with E-selectin and anti-sLeX/A antibodies in both IDC tissue and cell lines, and expression of α-1,3/4 FUTs FUT4, FUT5, FUT6, FUT10, and FUT11. To further assess the role of fucosylation in IDC biology, we immortalized a primary IDC cell line with human telomerase reverse transcriptase to create the 'CF1_T cell line'. Treatment with 2-fluorofucose (2-FF), a fucosylation inhibitor, completely abrogated its sLeX/A expression and dramatically reduced adherence of CF1_T cells to E-selectin under hemodynamic flow conditions. In addition, 2-FF-treated CF1_T cells showed a reduced migratory ability, as well as decreased cell proliferation rate. Notably, 2-FF treatment lowered the growth factor expression of CF1_T cells, prominently for FGF2, vascular endothelial growth factor, and transforming growth factor beta, and negatively affected activation of signal-regulating protein kinases 1 and 2 and p38 mitogen-activated protein kinase signaling pathways. These data indicate that fucosylation licenses several malignant features of IDC, such as cell adhesion, migration, proliferation, and growth factor expression, contributing to tumor progression.
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Affiliation(s)
- Mylène A. Carrascal
- UCIBIODepartamento Ciências da VidaFaculdade de Ciências e TecnologiaUniversidade Nova de LisboaPortugal
- CEDOCChronic Diseases Research CenterNOVA Medical School/Faculdade de Ciências MédicasUniversidade Nova de LisboaPortugal
| | - Mariana Silva
- CEDOCChronic Diseases Research CenterNOVA Medical School/Faculdade de Ciências MédicasUniversidade Nova de LisboaPortugal
- Departments of Dermatology and MedicineBrigham & Women's HospitalBostonMAUSA
- Harvard Medical SchoolProgram of Excellence in GlycosciencesBostonMAUSA
| | - José S. Ramalho
- CEDOCChronic Diseases Research CenterNOVA Medical School/Faculdade de Ciências MédicasUniversidade Nova de LisboaPortugal
| | - Cláudia Pen
- Centro Hospitalar de Lisboa CentralEPE – Serviço de Anatomia PatológicaLisbonPortugal
| | - Manuela Martins
- Centro Hospitalar de Lisboa CentralEPE – Serviço de Anatomia PatológicaLisbonPortugal
| | - Carlota Pascoal
- UCIBIODepartamento Ciências da VidaFaculdade de Ciências e TecnologiaUniversidade Nova de LisboaPortugal
| | - Constança Amaral
- UCIBIODepartamento Ciências da VidaFaculdade de Ciências e TecnologiaUniversidade Nova de LisboaPortugal
| | | | - Maria José Oliveira
- New Therapies GroupINEB‐Institute for Biomedical EngineeringPortoPortugal
- Instituto de Investigação e Inovação em SaúdeUniversidade do PortoPortugal
| | - Robert Sackstein
- Departments of Dermatology and MedicineBrigham & Women's HospitalBostonMAUSA
- Harvard Medical SchoolProgram of Excellence in GlycosciencesBostonMAUSA
| | - Paula A. Videira
- UCIBIODepartamento Ciências da VidaFaculdade de Ciências e TecnologiaUniversidade Nova de LisboaPortugal
- CEDOCChronic Diseases Research CenterNOVA Medical School/Faculdade de Ciências MédicasUniversidade Nova de LisboaPortugal
- CDG & Allies – PPAIN Congenital Disorders of Glycosylation Professionals and Patient Associations International NetworkCaparicaPortugal
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Abstract
Formation of appropriate gut microbiota is essential for human health. The first two years of life is the critical period for this process. Selection of mutualistic microorganisms of the intestinal microbiota is controlled by the FUT2 and FUT3 genes that encode fucosyltransferases, enzymes responsible for the synthesis of fucosylated glycan structures of mucins and milk oligosaccharides. In this review, the mechanisms of the selection and maintenance of intestinal microorganisms that involve fucosylated oligosaccharides of breast milk and mucins of the newborn's intestine are described. Possible reasons for the use of fucose, and not sialic acid, as the major biological signal for the selection are also discussed.
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Affiliation(s)
- S V Kononova
- Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
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34
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Chin Y, Kim J, Kim J, Jung S, Seo J. Improved production of 2′-fucosyllactose in engineered Escherichia coli by expressing putative α-1,2-fucosyltransferase, WcfB from Bacteroides fragilis. J Biotechnol 2017; 257:192-8. [DOI: 10.1016/j.jbiotec.2016.11.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/30/2016] [Accepted: 11/30/2016] [Indexed: 01/12/2023]
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35
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Urbanowicz BR, Bharadwaj VS, Alahuhta M, Peña MJ, Lunin VV, Bomble YJ, Wang S, Yang JY, Tuomivaara ST, Himmel ME, Moremen KW, York WS, Crowley MF. Structural, mutagenic and in silico studies of xyloglucan fucosylation in Arabidopsis thaliana suggest a water-mediated mechanism. Plant J 2017; 91:931-949. [PMID: 28670741 PMCID: PMC5735850 DOI: 10.1111/tpj.13628] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 06/21/2017] [Accepted: 06/22/2017] [Indexed: 05/17/2023]
Abstract
The mechanistic underpinnings of the complex process of plant polysaccharide biosynthesis are poorly understood, largely because of the resistance of glycosyltransferase (GT) enzymes to structural characterization. In Arabidopsis thaliana, a glycosyl transferase family 37 (GT37) fucosyltransferase 1 (AtFUT1) catalyzes the regiospecific transfer of terminal 1,2-fucosyl residues to xyloglucan side chains - a key step in the biosynthesis of fucosylated sidechains of galactoxyloglucan. We unravel the mechanistic basis for fucosylation by AtFUT1 with a multipronged approach involving protein expression, X-ray crystallography, mutagenesis experiments and molecular simulations. Mammalian cell culture expressions enable the sufficient production of the enzyme for X-ray crystallography, which reveals the structural architecture of AtFUT1 in complex with bound donor and acceptor substrate analogs. The lack of an appropriately positioned active site residue as a catalytic base leads us to propose an atypical water-mediated fucosylation mechanism facilitated by an H-bonded network, which is corroborated by mutagenesis experiments as well as detailed atomistic simulations.
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Affiliation(s)
- Breeanna R. Urbanowicz
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Vivek S. Bharadwaj
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Markus Alahuhta
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Maria J. Peña
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Vladimir V. Lunin
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Yannick J. Bomble
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Shuo Wang
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Jeong-Yeh Yang
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Sami T. Tuomivaara
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Michael E. Himmel
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Kelley W. Moremen
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - William S. York
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Michael F. Crowley
- Biosciences Division, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
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Petschacher B, Nidetzky B. Biotechnological production of fucosylated human milk oligosaccharides: Prokaryotic fucosyltransferases and their use in biocatalytic cascades or whole cell conversion systems. J Biotechnol 2016; 235:61-83. [DOI: 10.1016/j.jbiotec.2016.03.052] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 01/29/2023]
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Thomson D, Panagos CG, Venkatasamy R, Moss C, Robinson J, Bavington CD, Hogwood J, Mulloy B, Uhrín D, Spina D, Page CP. Structural characterization and anti-inflammatory activity of two novel polysaccharides from the sea squirt, Ascidiella aspersa. Pulm Pharmacol Ther 2016; 40:69-79. [DOI: 10.1016/j.pupt.2016.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/10/2016] [Accepted: 05/11/2016] [Indexed: 01/18/2023]
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Zhao F, Mamatyusupu D, Wang Y, Fang H, Wang H, Gao Q, Dong H, Ge S, Yu X, Zhang J, Wu L, Song M, Wang W. The Uyghur population and genetic susceptibility to type 2 diabetes: potential role for variants in CAPN10, APM1 and FUT6 genes. J Cell Mol Med 2016; 20:2138-2147. [PMID: 27374856 PMCID: PMC5082412 DOI: 10.1111/jcmm.12911] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 05/20/2016] [Indexed: 02/06/2023] Open
Abstract
Genome‐wide association studies have successfully identified over 70 loci associated with the risk of type 2 diabetes mellitus (T2DM) in multiple populations of European ancestry. However, the risk attributable to an individual variant is modest and does not yet provide convincing evidence for clinical utility. Association between these established genetic variants and T2DM in general populations is hitherto understudied in the isolated populations, such as the Uyghurs, resident in Hetian, far southern Xinjiang Uyghur Autonomous Region, China. In this case–control study, we genotyped 13 single‐nucleotide polymorphisms (SNPs) at 10 genes associated with diabetes in 130 cases with T2DM and 135 healthy controls of Uyghur, a Chinese minority ethnic group. Three of the 13 SNPs demonstrated significant association with T2DM in the Uyghur population. There were significant differences between the T2DM patients and controls in the risk allele distributions of rs3792267 (CAPN10) (P = 0.002), rs1501299 (APM1) (P = 0.017), and rs3760776 (FUT6) (P = 0.031). Allelic carriers of rs3792267‐A, rs1501299‐T, and rs3760776‐T had a 2.24‐fold [OR (95% CI): 1.35–3.71], 0.59‐fold [OR (95% CI): 0.39–0.91], 0.57‐fold [OR (95% CI): 0.34–0.95] increased risk for T2DM respectively. We further confirmed that the cumulative risk allelic scores calculated from the 13 susceptibility loci for T2DM differed significantly between the T2DM patients and controls (P = 0.001), and the effect of obesity/overweight on T2DM was only observed in the subjects with a combined risk allelic score under a value of 17. This study observed that the SNPs rs3792267 in CAPN10, rs1501299 in APM1, and rs3760776 in FUT6 might serve as potential susceptible biomarkers for T2DM in Uyghurs. The cumulative risk allelic scores of multiple loci with modest individual effects are also significant risk factors in Uyghurs for T2DM, particularly among non‐obese individuals. This is the first investigation having observed/found genetic variations on genetic loci functionally linked with glycosylation associated with the risk of T2DM in a Uyghur population.
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Affiliation(s)
- Feifei Zhao
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Dolikun Mamatyusupu
- College of the Life Sciences and Technology, Xinjiang University, Urumqi, China
| | - Youxin Wang
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Honghong Fang
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Hao Wang
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Qing Gao
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Hao Dong
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Siqi Ge
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Xinwei Yu
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Jie Zhang
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Lijuan Wu
- School of Public Health, Capital Medical University, Beijing, China.,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Manshu Song
- School of Public Health, Capital Medical University, Beijing, China. .,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China.
| | - Wei Wang
- School of Public Health, Capital Medical University, Beijing, China. .,Municipal Key Laboratory of Clinical Epidemiology, Beijing, China. .,School of Medical Sciences, Edith Cowan University, Joondalup, WA, Australia.
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39
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Wang H, Zhang C, Chen H, Yang Q, Zhou X, Gu Z, Zhang H, Chen W, Chen YQ. Characterization of an fungal l-fucokinase involved in Mortierella alpina GDP-l-fucose salvage pathway. Glycobiology 2016; 26:880-887. [PMID: 26957583 DOI: 10.1093/glycob/cww032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/29/2016] [Indexed: 12/18/2022] Open
Abstract
GDP-l-fucose functions as a biological donor for fucosyltransferases, which are required for the catalysis of l-fucose to various acceptor molecules including oligosaccharides, glycoproteins and glycolipids. Mortierella alpina is one of the highest lipid-producing fungi and can biosynthesis GDP-l-fucose in the de novo pathway. Analysis of the M. alpina genome suggests that there is a gene encoding l-fucokinase (FUK) for the conversion of fucose to l-fucose-1-phosphate in the GDP-l-fucose salvage pathway, which has never been found in fungi before. This gene was characterized to explore its role in GDP-l-fucose synthesis. The yield of GDP-l-fucose is relatively higher in lipid accumulation phase (0.096 mg per g cell) than that in cell multiplication phase (0.074 mg per g cell) of M. alpina Additionally, the transcript level of FUK is up regulated by nitrogen exhaustion when M. alpina starts to accumulate lipid, highlights the functional significance of FUK in the GDP-l-fucose biosynthesis in M. alpina Gene encoding FUK was expressed heterologously in Escherichia coli and the resulting protein was purified to homogeneity. The product of FUK reaction was analyzed by liquid chromatography and mass spectrometry. Kinetic parameters and other properties of FUK were investigated. Comparative analyses between the FUK protein and other homologous proteins were performed. To our knowledge, this study is the first to report a comprehensive characterization of FUK in a fungus. Mortierella alpina could be used as an alternative source for the production of GDP-l-fucose.
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Affiliation(s)
- Hongchao Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Chen Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Haiqin Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Qin Yang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Xin Zhou
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Zhennan Gu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China
| | - Yong Q Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.,Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, PR China.,Department of Cancer Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
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40
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Feng X, Zhao L, Gao S, Song X, Dong W, Zhao Y, Zhou H, Cheng L, Miao X, Jia L. Increased fucosylation has a pivotal role in multidrug resistance of breast cancer cells through miR-224-3p targeting FUT4. Gene 2015; 578:232-41. [PMID: 26701615 DOI: 10.1016/j.gene.2015.12.028] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/08/2015] [Accepted: 12/12/2015] [Indexed: 02/05/2023]
Abstract
Fucosylation is the final step in the glycosylation machinery, which produces glycans involved in tumor multidrug resistance development. MicroRNAs (miRNAs) are endogenous negative regulators of gene expression and have been implicated in most cellular processes of tumors, including drug resistance. This study was undertaken to determine the roles of fucosylation and miR-224-3p in multidrug resistance of human breast cancer cell lines. Comparative analysis revealed differential modification patterns of fucosylation of the fucosylated N-glycans in drug-resistant T47D/ADR cells and sensitive line T47D cells. The expressional profiles of fucosyltransferase genes in two pairs of parental and chemoresistant human breast cancer cell lines showed that FUT4 was up-regulated highly in MDR cell lines. Altered level of FUT4 affected the drug-resistant phenotype of T47D and T47D/ADR cells both in vitro and in vivo. By bioinformatics analysis, we identified FUT4 as one of the miR-224-3p-targeted genes. Further studies showed an inverse relationship between of FUT4 and miR-224-3p in parental and ADR-resistant breast cancer cells, wherein miR-224-3p was downregulated in resistant cells. 3'-UTR dual-luciferase reporter assay confirmed that miR-224-3p directly targeted 3'-untranslation region (3'-UTR) of FUT4 mRNA. In addition, miR-224-3p overexpression sensitized T47D/ADR cells to chemotherapeutics and reduced the growth rate of breast cancer xenografts in vivo. Our results indicate that FUT4 and miR-224-3p are crucial regulators of cancer response to chemotherapy, and may serve as therapeutic targets to reverse chemotherapy resistance in breast cancer.
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Affiliation(s)
- Xiaobin Feng
- College of Laboratory Medicine, Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Lifen Zhao
- College of Laboratory Medicine, Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Shuhang Gao
- Department of Oncology, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
| | - Xiaobo Song
- Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Weijie Dong
- Department of Biochemistry, Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Yongfu Zhao
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning Province, China
| | - Huimin Zhou
- Department of Microbiology, Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Lei Cheng
- Department of Laparoscopic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
| | - Xiaolong Miao
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning Province, China
| | - Li Jia
- College of Laboratory Medicine, Dalian Medical University, Dalian 116044, Liaoning Province, China.
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Mickum ML, Rojsajjakul T, Yu Y, Cummings RD. Schistosoma mansoni α1,3-fucosyltransferase-F generates the Lewis X antigen. Glycobiology 2015; 26:270-85. [PMID: 26582608 DOI: 10.1093/glycob/cwv103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/01/2015] [Indexed: 02/03/2023] Open
Abstract
Genetic evidence suggests that the Schistosoma mansoni genome contains six genes that encode α1,3-fucosyltransferases (smFuTs). To date, the activities and specificities of these putative fucosyltransferases are unknown. As Schistosoma express a variety of fucosylated glycans, including the Lewis X antigen Galβ1-4(Fucα1-3)GlcNAcβ-R, it is likely that this family of genes encode enzymes that are partly responsible for the generation of those structures. Here, we report the molecular cloning of fucosyltransferase-F (smFuT-F) from S. mansoni, as a soluble, green fluorescent protein fusion protein and its acceptor specificity. The gene smFuT-F was expressed in HEK freestyle cells, purified by affinity chromatography, and analyzed toward a broad panel of glycan acceptors. The enzyme product of smFuT-F effectively utilizes a type II chain acceptor Galβ1-4GlcNAc-R, but notably not the LDN sequence GalNAcβ1-4GlcNAc-R, to generate Lewis X type-glycans, and smFuT-F transcripts are present in all intramammalian life stages.
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Affiliation(s)
- Megan L Mickum
- Department of Biochemistry and the Emory Glycomics Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Teerapat Rojsajjakul
- Department of Biochemistry and the Emory Glycomics Center, Emory University School of Medicine, Atlanta, GA, USA Beth Israel Deaconess Medical Center, Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Ying Yu
- Department of Biochemistry and the Emory Glycomics Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Richard D Cummings
- Department of Biochemistry and the Emory Glycomics Center, Emory University School of Medicine, Atlanta, GA, USA Beth Israel Deaconess Medical Center, Department of Surgery, Harvard Medical School, Boston, MA, USA
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42
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Minagawa S, Sekiguchi S, Nakaso Y, Tomita M, Takahisa M, Yasuda H. Identification of Core Alpha 1,3-Fucosyltransferase Gene From Silkworm: An Insect Popularly Used to Express Mammalian Proteins. J Insect Sci 2015; 15:110. [PMID: 26223947 PMCID: PMC4675719 DOI: 10.1093/jisesa/iev088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 07/05/2015] [Indexed: 05/26/2023]
Abstract
Silkworm has great potential as production system of recombinant mammalian proteins. When the protein products are used for medical purpose, it is required to reduce the risk of an allergy, the content of core alpha 1,3-fucosyl residue attached to the N-glycan of proteins, for example. We isolated the gene of an enzyme responsible for the transfer of core alpha 1,3-fucosyl residue, core alpha 1,3-fucosyltransferase (Fuc-T C3), from silkworm. A candidate cDNA for silkworm Fuc-T C3 was isolated as a homolog of the fruit fly enzyme gene fucTA. The gene was located on chromosome 7 of the silkworm genome and was composed of seven exons, which spanned approximately 10 kb on the genome. The coding region of the gene was 1,350 bp and encoded a 450-amino acid protein with a molecular mass of 52.2 kDa. Deduced amino acid sequence of the coding region showed one transmembrane domain in its N-terminal and typical motifs common to fucosyltransferases including Fuc-T C3s of other organisms in its C-terminal. The extract of CHO cells transfected with the cDNA showed Fuc-T C3 activity using GDP-fucose and DABS-GnGn peptide as substrates. These results showed this cDNA clone actually encodes silkworm Fuc-T C3.
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Affiliation(s)
- Sachi Minagawa
- Central Laboratory, Nippon Flour Mills Co., Ltd., 5-1-3 Midorigaoka, Atsugi, Kanagawa, 243-0041, Japan.
| | - Satoshi Sekiguchi
- Central Laboratory, Nippon Flour Mills Co., Ltd., 5-1-3 Midorigaoka, Atsugi, Kanagawa, 243-0041, Japan
| | - Yuzuru Nakaso
- Central Laboratory, Nippon Flour Mills Co., Ltd., 5-1-3 Midorigaoka, Atsugi, Kanagawa, 243-0041, Japan
| | - Masahiro Tomita
- Transgenic Silkworm Department, Immuno-Biological Laboratories Co., Ltd., 1091-1, Naka, Fujioka, Gunma, 375-0005, Japan
| | - Manabu Takahisa
- Central Laboratory, Nippon Flour Mills Co., Ltd., 5-1-3 Midorigaoka, Atsugi, Kanagawa, 243-0041, Japan
| | - Hideyo Yasuda
- Department of Animal Biotechnology, Konkuk University, Seoul 143-701, Korea
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43
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Maroni L, van de Graaf SFJ, Hohenester SD, Oude Elferink RPJ, Beuers U. Fucosyltransferase 2: a genetic risk factor for primary sclerosing cholangitis and Crohn's disease--a comprehensive review. Clin Rev Allergy Immunol 2015; 48:182-91. [PMID: 24828903 DOI: 10.1007/s12016-014-8423-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fucosyltransferase 2 (FUT2) mediates the inclusion of fucose in sugar moieties of glycoproteins and glycolipids. ABO blood group antigens and host-microbe interactions are influenced by FUT2 activity. About 20 % of the population has a "non-secretor" status caused by inactivating variants of FUT2 on both alleles. The non-sense mutation G428A and the missense mutation A385T are responsible for the vast majority of the non-secretor status in Caucasians, Africans, and Asians, respectively. Non-secretor individuals do not secrete fucose-positive antigens and lack fucosylation in epithelia. They also appear to be protected against a number of infectious diseases, such as Norovirus and Rotavirus infections. In recent years, genome-wide association studies (GWAS) identified inactivating variants at the FUT2 locus to be associated with primary sclerosing cholangitis (PSC), Crohn's disease (CD), and biochemical markers of biliary damage. These associations are intriguing given the important roles of fucosylated glycans in host-microbe interactions and membrane stability. Non-secretors have a reduced fecal content of Bifidobacteria. The intestinal bacterial composition of CD patients resembles the one of non-secretors, with an increase in Firmicutes and decreases in Proteobacteria and Actinobacteria. Non-secretor individuals lack fucosylated glycans at the surface of biliary epithelium and display a different bacterial composition of bile compared to secretors. Notably, an intact biliary epithelial glycocalix is relevant for a stable 'biliary HCO3 (-) umbrella' to protect against toxic effects of hydrophobic bile salt monomers. Here, the biology of FUT2 will be discussed as well as hypotheses to explain the role of FUT2 in the pathophysiology of PSC and Crohn's disease.
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Affiliation(s)
- Luca Maroni
- Department of Gastroenterology and Hepatology, Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
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44
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Chachadi VB, Bhat G, Cheng PW. Glycosyltransferases involved in the synthesis of MUC-associated metastasis-promoting selectin ligands. Glycobiology 2015; 25:963-75. [PMID: 25972125 DOI: 10.1093/glycob/cwv030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 04/29/2015] [Indexed: 12/31/2022] Open
Abstract
The sialyl Lewis a and x (sLe(a/x)) antigens frequently displayed on the surface of tumor cells are involved in metastasis. Their synthesis has been attributed to altered expression of selective glycosyltransferases. Identification of these glycosyltransferases and the glycoproteins that carry these carbohydrate antigens should help advance our understanding of selectin-mediated cancer metastasis. In this study, quantitative real-time polymerase chain reaction analysis coupled with in situ proximity ligation assay and small interference RNA treatment shows involvement of β3galactosyltransferase-V in the synthesis of MUC16-associated sLe(a) in H292 cells. Also, α3fucosyltransferase-V, which is absent in BEAS-2B human immortalized bronchial epithelial cells and A549 lung carcinoma cells, participates in the synthesis of MUC1-associated sLe(x) in CFT1 human immortalized bronchial epithelial cells and H292 lung carcinoma cells. Neither selectin ligand is found on MUC1 in BEAS-2B and A549 cells. Knockdown of either enzyme suppresses migration, and selectin tethering and rolling properties of H292 cells under dynamic flow as determined by wound healing and parallel plate flow chamber assays, respectively. These results provide insights into how the synthesis of mucin-associated selectin ligands and the metastatic properties of cancer cells can be regulated by selective glycosyltransferases that work on mucins. They may help develop novel anticancer drugs.
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Affiliation(s)
- Vishwanath B Chachadi
- Department of Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA Department of Biochemistry and Molecular Biology, College of Medicine
| | - Ganapati Bhat
- Department of Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA Department of Biochemistry and Molecular Biology, College of Medicine
| | - Pi-Wan Cheng
- Department of Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA Department of Biochemistry and Molecular Biology, College of Medicine Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA
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45
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Ryoo H, Ryu J, Lee C. Transcriptional Downregulation by Nucleotide Substitution with the Minor Allele of rs3760776 Located in the Promoter of FUT6 Gene. Biochem Genet 2015; 53:72-8. [PMID: 25962326 DOI: 10.1007/s10528-015-9673-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 04/15/2015] [Indexed: 11/25/2022]
Abstract
We examined the promoter activity of an association signal in an upstream region of the gene encoding fucosyltransferae 6 (FUT6) identified from a recent genomewide association study for the N-glycan level. The luciferase assay using reporter constructs with T and C alleles at rs3760776 revealed differential promoter activity. The amount of luciferin expressed with the C allele corresponded to that without the reporter construct (P > 0.05). On the other hand, the expression was dramatically reduced with the T allele (P < 0.05). The difference in transcriptional activity between the two alleles was confirmed by an electrophoretic mobility shift assay. It demonstrated that the promoter with a T allele had a stronger binding affinity to nuclear factors than that with the C allele. We concluded that the T allele of rs3760776 might repress the transcription of the FUT6 gene. Further studies are warranted to understand its underlying mechanism and its influence on susceptibility to potential diseases.
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Affiliation(s)
- Hyunju Ryoo
- School of Systems Biomedical Science, Soongsil University, 511 Sangdo-dong, Dongjak-gu, Seoul, Korea
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46
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André S, Kaltner H, Manning JC, Murphy PV, Gabius HJ. Lectins: getting familiar with translators of the sugar code. Molecules 2015; 20:1788-823. [PMID: 25621423 DOI: 10.3390/molecules20021788] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 12/23/2014] [Accepted: 01/08/2015] [Indexed: 11/16/2022] Open
Abstract
The view on the significance of the presence of glycans in glycoconjugates is undergoing a paradigmatic change. Initially mostly considered to be rather inert and passive, the concept of the sugar code identifies glycans as highly versatile platform to store information. Their chemical properties endow carbohydrates to form oligomers with unsurpassed structural variability. Owing to their capacity to engage in hydrogen (and coordination) bonding and C-H/π-interactions these “code words” can be “read” (in Latin, legere) by specific receptors. A distinct class of carbohydrate-binding proteins are the lectins. More than a dozen protein folds have developed carbohydrate-binding capacity in vertebrates. Taking galectins as an example, distinct expression patterns are traced. The availability of labeled endogenous lectins facilitates monitoring of tissue reactivity, extending the scope of lectin histochemistry beyond that which traditionally involved plant lectins. Presentation of glycan and its cognate lectin can be orchestrated, making a glycan-based effector pathway in growth control of tumor and activated T cells possible. In order to unravel the structural basis of lectin specificity for particular glycoconjugates mimetics of branched glycans and programmable models of cell surfaces are being developed by strategic combination of lectin research with synthetic and supramolecular chemistry.
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47
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Lehner A, Menu-Bouaouiche L, Dardelle F, Le Mauff F, Driouich A, Lerouge P, Mollet JC. In silico prediction of proteins related to xyloglucan fucosyltransferases in Solanaceae genomes. Plant Signal Behav 2015; 10:e1026023. [PMID: 26176901 PMCID: PMC4622612 DOI: 10.1080/15592324.2015.1026023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 02/26/2015] [Accepted: 02/28/2015] [Indexed: 05/28/2023]
Abstract
Two independent studies have shown that the cell wall of pollen tubes from tobacco and tomato species contained fucosylated xyloglucan (XyG). These findings are intriguing as many reports have shown that XyG of somatic cells of these species is not fucosylated but instead is arabinosylated. In order to produce fucosylated XyG, plants must express a functional galactoside α-2-fucosyltransferase. Here, using a bioinformatics approach, we show that several candidate genes coding for XyG fucosyltransferases are present in the genome of coffee and several Solanaceae species including tomato, tobacco, potato, eggplant and pepper. BLAST and protein alignments with the 2 well-characterized XyG fucosyltransferases from Arabidopsis thaliana and Pisum sativum revealed that at least 6 proteins from different Solanaceae species and from coffee displayed the 3 conserved motifs required for XyG fucosyltransferase activity.
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Affiliation(s)
- Arnaud Lehner
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - Laurence Menu-Bouaouiche
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - Flavien Dardelle
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - François Le Mauff
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - Azeddine Driouich
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - Patrice Lerouge
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
| | - Jean-Claude Mollet
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale EA4358; IRIB; VASI; Normandy University; University of Rouen; Mont-Saint-Aignan cedex, France
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Juliant S, Harduin-Lepers A, Monjaret F, Catieau B, Violet ML, Cérutti P, Ozil A, Duonor-Cérutti M. The α1,6-fucosyltransferase gene (fut8) from the Sf9 lepidopteran insect cell line: insights into fut8 evolution. PLoS One 2014; 9:e110422. [PMID: 25333276 PMCID: PMC4204859 DOI: 10.1371/journal.pone.0110422] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/25/2014] [Indexed: 01/09/2023] Open
Abstract
The core alpha1,6-fucosyltransferase (FUT8) catalyzes the transfer of a fucosyl moiety from GDP-fucose to the innermost asparagine-linked N-acetylglucosamine residue of glycoproteins. In mammals, this glycosylation has an important function in many fundamental biological processes and although no essential role has been demonstrated yet in all animals, FUT8 amino acid (aa) sequence and FUT8 activity are very well conserved throughout the animal kingdom. We have cloned the cDNA and the complete gene encoding the FUT8 in the Sf9 (Spodoptera frugiperda) lepidopteran cell line. As in most animal genomes, fut8 is a single-copy gene organized in different exons. The open reading frame contains 12 exons, a characteristic that seems to be shared by all lepidopteran fut8 genes. We chose to study the gene structure as a way to characterize the evolutionary relationships of the fut8 genes in metazoans. Analysis of the intron-exon organization in 56 fut8 orthologs allowed us to propose a model for fut8 evolution in metazoans. The presence of a highly variable number of exons in metazoan fut8 genes suggests a complex evolutionary history with many intron gain and loss events, particularly in arthropods, but not in chordata. Moreover, despite the high conservation of lepidoptera FUT8 sequences also in vertebrates and hymenoptera, the exon-intron organization of hymenoptera fut8 genes is order-specific with no shared exons. This feature suggests that the observed intron losses and gains may be linked to evolutionary innovations, such as the appearance of new orders.
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Affiliation(s)
- Sylvie Juliant
- CNRS UPS3044 Baculovirus et Thérapie, Saint Christol Lèz Alès, France
| | - Anne Harduin-Lepers
- CNRS UMR8576, Unité de Glycobiologie Structurale et Fonctionnelle, Université Lille Nord de France, Lille1, Villeneuve d'Ascq, France
| | - François Monjaret
- CNRS UPS3044 Baculovirus et Thérapie, Saint Christol Lèz Alès, France
| | - Béatrice Catieau
- CNRS UMR8576, Unité de Glycobiologie Structurale et Fonctionnelle, Université Lille Nord de France, Lille1, Villeneuve d'Ascq, France
- Laboratoire Français du Fractionnement et des Biotechnologies de Lille, Lille, France
| | - Marie-Luce Violet
- CNRS UPS3044 Baculovirus et Thérapie, Saint Christol Lèz Alès, France
| | - Pierre Cérutti
- CNRS UPS3044 Baculovirus et Thérapie, Saint Christol Lèz Alès, France
| | - Annick Ozil
- CNRS UPS3044 Baculovirus et Thérapie, Saint Christol Lèz Alès, France
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Abstract
Bacterial glycosyltransferases (GT) often synthesize the same glycan linkages as mammalian GT; yet, they usually have very little sequence identity. Nevertheless, enzymatic properties, folding, substrate specificities, and catalytic mechanisms of these enzyme proteins may have significant similarity. Thus, bacterial GT can be utilized for the enzymatic synthesis of both bacterial and mammalian types of complex glycan structures. A comparison is made here between mammalian and bacterial enzymes that synthesize epitopes found in mammalian glycoproteins, and those found in the O antigens of Gram-negative bacteria. These epitopes include Thomsen–Friedenreich (TF or T) antigen, blood group O, A, and B, type 1 and 2 chains, Lewis antigens, sialylated and fucosylated structures, and polysialic acids. Many different approaches can be taken to investigate the substrate binding and catalytic mechanisms of GT, including crystal structure analyses, mutations, comparison of amino acid sequences, NMR, and mass spectrometry. Knowledge of the protein structures and functions helps to design GT for specific glycan synthesis and to develop inhibitors. The goals are to develop new strategies to reduce bacterial virulence and to synthesize vaccines and other biologically active glycan structures.
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Affiliation(s)
- Inka Brockhausen
- Department of Medicine, Queen's University , Kingston, ON , Canada ; Department of Biomedical and Molecular Sciences, Queen's University , Kingston, ON , Canada
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Amorim I, Freitas DP, Magalhães A, Faria F, Lopes C, Faustino AM, Smet A, Haesebrouck F, Reis CA, Gärtner F. A comparison of Helicobacter pylori and non-Helicobacter pylori Helicobacter spp. Binding to canine gastric mucosa with defined gastric glycophenotype. Helicobacter 2014; 19:249-59. [PMID: 24689986 DOI: 10.1111/hel.12125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The gastric mucosa of dogs is often colonized by non-Helicobacter pylori helicobacters (NHPH), while H. pylori is the predominant gastric Helicobacter species in humans. The colonization of the human gastric mucosa by H. pylori is highly dependent on the recognition of host glycan receptors. Our goal was to define the canine gastric mucosa glycophenotype and to evaluate the capacity of different gastric Helicobacter species to adhere to the canine gastric mucosa. MATERIALS AND METHODS The glycosylation profile in body and antral compartments of the canine gastric mucosa, with focus on the expression of histo-blood group antigens was evaluated. The in vitro binding capacity of FITC-labeled H. pylori and NHPH to the canine gastric mucosa was assessed in cases representative of the canine glycosylation pattern. RESULTS The canine gastric mucosa lacks expression of type 1 Lewis antigens and presents a broad expression of type 2 structures and A antigen, both in the surface and glandular epithelium. Regarding the canine antral mucosa, H. heilmannii s.s. presented the highest adhesion score whereas in the body region the SabA-positive H. pylori strain was the strain that adhered more. CONCLUSIONS The canine gastric mucosa showed a glycosylation profile different from the human gastric mucosa suggesting that alternative glycan receptors may be involved in Helicobacter spp. binding. Helicobacter pylori and NHPH strains differ in their ability to adhere to canine gastric mucosa. Among the NHPH, H. heilmannii s.s. presented the highest adhesion capacity in agreement with its reported colonization of the canine stomach.
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Affiliation(s)
- Irina Amorim
- Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira nr. 228, Porto, 4050-313, Portugal; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal
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