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Fucosylation

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https://www.readbyqxmd.com/read/28103512/protein-o-fucosyltransferase-1-promotes-trophoblast-cell-proliferation-through-activation-of-mapk-and-pi3k-akt-signaling-pathways
#1
Chang Liu, Xiaohua Liang, Jiao Wang, Qin Zheng, Yue Zhao, Muhammad Noman Khan, Shuai Liu, Qiu Yan
Protein O-fucosylation is an important glycosylation modification and plays an important role in embryonic development. Protein O-fucosyltransferase 1 (poFUT1) is an essential enzyme that catalyzes the synthesis of protein O-fucosylation. Our previous studies showed that poFUT1 promoted trophoblast cell migration and invasion at the fetal-maternal interface, but the role of poFUT1 in trophoblast cells proliferation remains unclear. Here, immunohistochemistry data showed that poFUT1 and PCNA levels were decreased in abortion patient's trophoblasts compared with women with normal pregnancies...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28102426/improved-anticoagulant-effect-of-fucosylated-chondroitin-sulfate-orally-administered-as-gastro-resistant-tablets
#2
Roberto J C Fonseca, Isabela D Sucupira, Stephan Nicollas M C G Oliveira, Gustavo R Santos, Paulo A S Mourão
Fucosylated chondroitin sulfate (FucCS) is a potent anticoagulant polysaccharide extracted from sea cucumber. Its anticoagulant activity is attributed to the presence of unique branches of sulfated fucose. Although this glycosaminoglycan exerts an antithrombotic effect following oral administration, high doses are necessary to achieve the maximum effect. The diminished activity of FucCS following oral administration is likely due to its degradation in the gastrointestinal tract and its limited ability to cross the intestinal cell membranes...
January 19, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28077298/the-underestimated-n-glycomes-of-lepidopteran-species
#3
Rhiannon Stanton, Alba Hykollari, Barbara Eckmair, Daniel Malzl, Martin Dragosits, Dieter Palmberger, Ping Wang, Iain B H Wilson, Katharina Paschinger
BACKGROUND: Insects are significant to the environment, agriculture, health and biotechnology. Many of these aspects display some relationship to glycosylation, e.g., in case of pathogen binding or production of humanised antibodies; for a long time, it has been considered that insect N-glycosylation potentials are rather similar and simple, but as more species are glycomically analysed in depth, it is becoming obvious that there is indeed a large structural diversity and interspecies variability...
January 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28029136/application-of-lectin-array-technology-for-biobetter-characterization-its-correlation-with-fc%C3%AE-riii-binding-and-adcc
#4
Markus Roucka, Klaus Zimmermann, Markus Fido, Andreas Nechansky
Lectin microarray technology was applied to compare the glycosylation pattern of the monoclonal antibody MB311 expressed in SP2.0 cells to an antibody-dependent cellular cytotoxic effector function (ADCC)-optimized variant (MB314). MB314 was generated by a plant expression system that uses genetically modified moss protoplasts (Physcomitrella patens) to generate a de-fucosylated version of MB311. In contrast to MB311, no or very low interactions of MB314 with lectins Aspergillus oryzae l-fucose (AOL), Pisum sativum agglutinin (PSA), Lens culinaris agglutinin (LCA), and Aleuria aurantia lectin (AAL) were observed...
December 24, 2016: Microarrays
https://www.readbyqxmd.com/read/28011641/glycan-bound-to-the-selectin-low-affinity-state-engages-glu88-to-stabilize-the-high-affinity-state-under-force
#5
Padmaja Mehta-D'souza, Arkadiusz G Klopocki, Vaheh Oganesyan, Simon Terzyan, Timothy Mather, Zhenhai Li, Sumith R Panicker, Cheng Zhu, Rodger P McEver
Selectin interactions with fucosylated glycan ligands mediate leukocyte rolling in the vasculature under shear forces. Crystal structures of P- and E-selectin suggest a two-state model in which ligand binding to the lectin domain closes loop 83-89 around the Ca(2+)-coordination site, enabling Glu88 to engage Ca(2+) and fucose. This triggers further allostery that opens the lectin/EGF-domain hinge. The model posits that force accelerates transition from the bent (low-affinity) to the extended (high-affinity) state...
December 23, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28010766/heterologous-expression-in-pichia-pastoris-and-characterization-of-a-%C3%AE-glucosidase-from-the-xylophagous-cockroach-panesthia-angustipennis-spadica-displaying-high-specific-activity-for-cellobiose
#6
Yihai Li, Gaku Arakawa, Gaku Tokuda, Hirofumi Watanabe, Manabu Arioka
A β-glucosidase (BG), PaBG1b, from the xylophagous cockroach Panesthia angustipennis spadica was heterologously expressed in the methylotrophic yeast Pichia pastoris, purified, and biochemically characterized. Post-translational modification and N-terminal sequencing analysis demonstrated that the expression product was comprised of two polypeptides with different N-terminal sequences, presumably due to the presence of lysine-arginine (KR) sequence in the putative mature region. Substrate specificity analysis showed that PaBG1b hydrolyzed a broad range of substrates including cellohexaose, with the preference for aryl β-d-fucosyl linkage and laminaribiose...
February 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28008329/maternal-and-fetal-mechanisms-of-b-cell-regulation-during-pregnancy-human-chorionic-gonadotropin-stimulates-b-cells-to-produce-il-10%C3%A2-while-alpha-fetoprotein-drives-them-into-apoptosis
#7
Franziska Fettke, Anne Schumacher, Andrea Canellada, Natalia Toledo, Isabelle Bekeredjian-Ding, Albert Bondt, Manfred Wuhrer, Serban-Dan Costa, Ana Claudia Zenclussen
Maternal immune tolerance toward the fetus is an essential requisite for pregnancy. While T cell functions are well documented, little is known about the participation of B cells. We have previously suggested that IL-10-producing B cells are involved in pregnancy tolerance in mice and humans. By employing murine and human systems, we report now that fetal trophoblasts positively regulate the generation of IL-10-producing B cells. We next studied the participation of hormones produced by the placenta as well as the fetal protein alpha-fetoprotein (AFP) in B cell modulation...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27993973/anaplasma-marginale-outer-membrane-protein-a-is-an-adhesin-that-recognizes-sialylated-and-fucosylated-glycans-and-functionally-depends-on-an-essential-binding-domain
#8
Kathryn S Hebert, David Seidman, Aminat T Oki, Jerilyn Izac, Sarvani Emani, Lee D Oliver, Daniel P Miller, Brittney K Tegels, Reiji Kannagi, Richard T Marconi, Jason A Carlyon
Anaplasma marginale causes bovine anaplasmosis, a debilitating and potentially fatal tick-borne infection of cattle. Because A. marginale is an obligate intracellular organism, its adhesins that mediate entry into host cells are essential for survival. Here, we demonstrate that A. marginale outer membrane protein A (AmOmpA; AM854) contributes to the invasion of mammalian and tick host cells. AmOmpA exhibits predicted structural homology to OmpA of A. phagocytophilum (ApOmpA), an adhesin that uses key lysine and glycine residues to interact with α2,3-sialylated and α1,3-fucosylated glycan receptors, including 6-sulfo-sialyl Lewis x...
December 19, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27993676/fucosyltransferases-produce-n-glycans-containing-core-l-galactose
#9
Hiroyuki Ohashi, Takao Ohashi, Hiroyuki Kajiura, Ryo Misaki, Shinichi Kitamura, Kazuhito Fujiyama
l-Galactose (l-Gal) containing N-glycans and cell wall polysaccharides have been detected in the l-Fuc deficient mur1 mutant of Arabidopsis thaliana. The l-Gal residue is thought to be transferred from GDP-l-Gal, which is a structurally related analog of GDP-l-Fuc, but in vitrol-galactosylation activity has never been detected. In this study, we carried out preparative scale GDP-l-Gal synthesis using recombinant A. thaliana GDP-mannose-3',5'-epimerase. We also demonstrated the l-galactosylation assay of mouse α1,6-fucosyltransferase (MmFUT8) and A...
December 18, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27979999/mouse-intestinal-niche-cells-express-a-distinct-%C3%AE-1-2-fucosylated-glycan-recognized-by-a-lectin-from-burkholderia-cenocepacia
#10
Daisuke Sugahara, Yuka Kobayashi, Yoshihiro Akimoto, Hayato Kawakami
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...
November 22, 2016: Glycobiology
https://www.readbyqxmd.com/read/27975160/glycosylation-a-hallmark-of-cancer
#11
REVIEW
Bhairavi N Vajaria, Prabhudas S Patel
The hallmarks of cancer are characterized by functional capabilities that allow cancer cells to survive, proliferate and disseminate during the multistep tumorigenesis. Cancer being a cellular disease, changes in cellular glycoproteins play an important role in malignant transformation and cancer progression. The present review summarizes various studies that depicted correlation of glycosylation with tumor initiation, progression and metastasis, which are helpful in early diagnosis, disease monitoring and prognosis...
December 14, 2016: Glycoconjugate Journal
https://www.readbyqxmd.com/read/27967290/ecotropic-viral-integration-site-i-regulates-alpha1-6-fucosyl-transferase-expression-and-blocks-erythropoiesis-in-chronic-myeloid-leukemia
#12
Nivedita Kuila, Kasturi Bala Nayak, Arundhati Halder, Subramaniam Agatheeswaran, Ghanashyam Biswas, Sutapa Biswas, Naresh Chandra Pattnayak, Soumen Chakraborty
Although BCR-ABL is the hallmark genetic abnormality of chronic myeloid leukemia (CML), secondary molecular events responsible for the evolution of the disease to blast crisis are yet to be deciphered. Taking into account the significant association of ecotropic viral integration site I (EVI1) in CML drug resistance, it is necessary to decipher the other roles played by EVI1 in CML disease progression. In this regard, we cross-hybridized three microarray datasets and deduced a set of 11 genes that seems to be regulated by EVI1 in CML...
December 14, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27951443/synthesis-and-nmr-analysis-of-model-compounds-related-to-fucosylated-chondroitin-sulfates-galnac-and-fuc-1%C3%A2-%C3%A2-%C3%A2-6-galnac-derivatives
#13
Dmitry Z Vinnitskiy, Nadezhda E Ustyuzhanina, Andrey S Dmitrenok, Alexander S Shashkov, Nikolay E Nifantiev
Unsubstituted and 6-O-α-L-fucosylated propyl 2-acetamido-2-deoxy-β-D-galactopyranosides and their selectively O-sulfated (both in GalNAc and Fuc units) derivatives were synthesized as model compounds representing the fragments of fucosylated chondroitin sulfates (FCS) from sea cucumbers. Per-O-acetylated 2-deoxy-2-N-phthalimido-D-glucopyranose was used as a key precursor for the preparation of all 2-acetamido-2-deoxy-D-galactopyranoside containing products. Attempts at 6-O-glycosylation of propyl 3-O-benzoyl-2-deoxy-2-N-phthalimido-D-galactoside by 2-O-benzyl-3,4-di-O-chloracetyl-L-fucosyl trichloracetimidate in the presence of TMSOTf gave a 1:1 mixture of the corresponding α- and β-isomeric disaccharides, while the use of structurally related fucosyl bromide donor with promotion by Bu4NBr led to the formation of desired α-isomeric disaccharide exclusively...
January 13, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/27936757/polyclonal-immunoglobulin-g-n-glycosylation-in-the-pathogenesis-of-plasma-cell-disorders
#14
Stefan Mittermayr, Giao N Lê, Colin Clarke, Silvia Millán Martín, Anne-Marie Larkin, Peter O'Gorman, Jonathan Bones
The pathological progression from benign monoclonal gammopathy of undetermined significance (MGUS) to smoldering myeloma (SMM) and finally to active myeloma (MM) is poorly understood. Abnormal immunoglobulin G (IgG) glycosylation in myeloma has been reported. Using a glycomic platform composed of hydrophilic interaction UPLC, exoglycosidase digestions, weak anion-exchange chromatography, and mass spectrometry, polyclonal IgG N-glycosylation profiles from 35 patients [MGUS (n = 8), SMM (n = 5), MM (n = 8), complete-response (CR) post-treatment (n = 5), relapse (n = 4), healthy age-matched control (n = 5)] were characterized to map glycan structures in distinct disease phases of multiple myeloma...
December 12, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27927023/novel-strategies-for-improving-hematopoietic-reconstruction-after-allogeneic-hematopoietic-stem-cell-transplantation-or-intensive-chemotherapy
#15
Frédéric Baron, Arnon Nagler
High-dose conditioning regimens for allogeneic hematopoietic cell transplantation (allo-HCT) as well as intensive poly-chemotherapy for acute myeloid leukemia (AML) induce prolonged periods of neutropenia. The duration of the neutropenia is particularly long following umbilical cord blood transplantation (UCBT). Areas covered: After briefly reviewing the impact of hematopoietic growth factors administration to hasten hematologic reconstitution after allo-HCT or intensive AML chemotherapy, this article summarizes recent approaches that have been investigated to prompt hematologic reconstruction after UCBT or intensive AML chemotherapy...
February 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/27922544/fetal-environment-and-glycosylation-status-in-neonatal-cord-blood-a-comprehensive-mass-spectrometry-based-glycosylation-analysis
#16
Ryosuke Sato, Kenji J Tsuchiya, Hideo Matsuzaki, Nori Takei, Hiroaki Itoh, Naohiro Kanayama, Takafumi Suda, Hiroshi Watanabe, Tetsu Ohashi, Masakazu Tanaka, Shin-Ichiro Nishimura, Masato Maekawa
Fetal environment is known to be a major predictive factor of type 2 diabetes and cardiovascular disease. However, associations of fetal environment and cord blood glycoforms are uncertain. In this study, we aimed to determine whether glycosylation status in neonatal cord blood is associated with perinatal outcomes reflecting a poor fetal environment.Thirty-six low birth weight (LBW) infants and 120 normal birth weight infants were recruited from a longitudinal birth cohort. We conducted a comprehensive cord blood N-glycan analysis using matrix-assisted laser-desorption/ionization time-of-flight mass spectrometry...
April 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27919692/improved-production-of-2-fucosyllactose-in-engineered-escherichia-coli-by-expressing-putative-%C3%AE-1-2-fucosyltransferase-wcfb-from-bacteroides-fragilis
#17
Young-Wook Chin, Ji-Yeong Kim, Jae-Han Kim, Sang-Min Jung, Jin-Ho Seo
2'-Fucosyllactose (2-FL) is one of most abundant oligosaccharides in human milk, which is involved in many biological functions for infant health. Since 2-FL has a great potential in application to functional food materials and pharmaceuticals, several microbial systems for mass production of 2-FL have been developed in recent years. Microbial production of 2-FL was suggested to be influenced by a number of factors including fucosylation activity of α-1,2-fucosyltransferase. In the present study, the wcfB gene coding for α-1,2-fucosyltransferase from Bacteroides fragilis was screened from eleven candidates of putative α-1,2-fucosyltransferase...
December 2, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27919572/non-fucosylated-cb-cd34-cells-represent-a-good-target-for-enforced-fucosylation-to-improve-engraftment-following-cord-blood-transplantation
#18
Simon N Robinson, Michael W Thomas, Paul J Simmons, Junjun Lu, Hong Yang, Jeannie A Javni, Elizabeth J Shpall, Patrick A Zweidler-Mckay
BACKGROUND AIMS: Despite ethnic diversity and ready availability of cryopreserved, human leukocyte antigen-typed cord blood (CB), delayed engraftment remains a significant hurdle to successful CB transplantation. Suboptimal homing of CB hematopoietic stem and progenitor cells (HSPCs) to the hematopoietic microenvironment (HM) is thought to be responsible and due to low levels of HSPC fucosylation. Fucosylation (decoration with sialyl-Lewis(X)) may improve HSPC homing to HM by increasing the strength of HSPC/E-selectin interactions, where E-selectin is constitutively expressed by HM microvasculature...
February 2017: Cytotherapy
https://www.readbyqxmd.com/read/27917827/the-n14-anti-afamin-antibody-fab-a-rare-vl1-cdr-glycosylation-crystallographic-re-sequencing-molecular-plasticity-and-conservative-versus-enthusiastic-modelling
#19
Andreas Naschberger, Barbara G Fürnrohr, Tihana Lenac Rovis, Suzana Malic, Klaus Scheffzek, Hans Dieplinger, Bernhard Rupp
The monoclonal antibody N14 is used as a detection antibody in ELISA kits for the human glycoprotein afamin, a member of the albumin family, which has recently gained interest in the capture and stabilization of Wnt signalling proteins, and for its role in metabolic syndrome and papillary thyroid carcinoma. As a rare occurrence, the N14 Fab is N-glycosylated at Asn26L at the onset of the VL1 antigen-binding loop, with the α-1-6 core fucosylated complex glycan facing out of the L1 complementarity-determining region...
December 1, 2016: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/27895315/identification-of-aberrantly-expressed-glycans-in-gastric-cancer-by-integrated-lectin-microarray-and-mass-spectrometric-analyses
#20
Xiang Li, Feng Guan, Dongliang Li, Zengqi Tan, Ganglong Yang, Yanli Wu, Zhaohui Huang
Cancer progression is usually associated with alterations of glycan expression patterns. Little is known regarding global glycomics in gastric cancer, the most common type of epithelial cancer. We integrated lectin microarray and mass spectrometry (MS) methods to profile glycan expression in three gastric cancer cell lines (SGC-7901, HGC-27, and MGC-803) and one normal gastric epithelial cell line (GES-1). Significantly altered glycans were confirmed by lectin staining and MALDI-TOF/TOF-MS. The three cancer cell lines showed increased levels of core-fucosylated N-glycans, GalNAcα-Ser/Thr (Tn antigen), and Sia2-6Galβ1-4GlcNAc N-glycans, but reduced levels of biantennary N-glycans, Galβ1-3GalNAcα-Ser/Thr (T antigen), and (GlcNAc)n N-glycans...
November 24, 2016: Oncotarget
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