151
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Moons SJ, Adema GJ, Derks MT, Boltje TJ, Büll C. Sialic acid glycoengineering using N-acetylmannosamine and sialic acid analogs. Glycobiology 2020; 29:433-445. [PMID: 30913290 DOI: 10.1093/glycob/cwz026] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/07/2019] [Accepted: 03/21/2019] [Indexed: 12/16/2022] Open
Abstract
Sialic acids cap the glycans of cell surface glycoproteins and glycolipids. They are involved in a multitude of biological processes and aberrant sialic acid expression is associated with several pathologies. Sialic acids modulate the characteristics and functions of glycoproteins and regulate cell-cell as well as cell-extracellular matrix interactions. Pathogens such as influenza virus use sialic acids to infect host cells and cancer cells exploit sialic acids to escape from the host's immune system. The introduction of unnatural sialic acids with different functionalities into surface glycans enables the study of the broad biological functions of these sugars and presents a therapeutic option to intervene with pathological processes involving sialic acids. Multiple chemically modified sialic acid analogs can be directly utilized by cells for sialoglycan synthesis. Alternatively, analogs of the natural sialic acid precursor sugar N-Acetylmannosamine (ManNAc) can be introduced into the sialic acid biosynthesis pathway resulting in the intracellular conversion into the corresponding sialic acid analog. Both, ManNAc and sialic acid analogs, have been employed successfully for a large variety of glycoengineering applications such as glycan imaging, targeting toxins to tumor cells, inhibiting pathogen binding, or altering immune cell activity. However, there are significant differences between ManNAc and sialic acid analogs with respect to their chemical modification potential and cellular metabolism that should be considered in sialic acid glycoengineering experiments.
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Affiliation(s)
- Sam J Moons
- Cluster for Molecular Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, Nijmegen, The Netherlands
| | - Gosse J Adema
- Radiotherapy & OncoImmunology Laboratory, Department of Radiation Oncology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 32, Nijmegen, The Netherlands
| | - Max Tgm Derks
- Cluster for Molecular Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, Nijmegen, The Netherlands
| | - Thomas J Boltje
- Cluster for Molecular Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, Nijmegen, The Netherlands
| | - Christian Büll
- Radiotherapy & OncoImmunology Laboratory, Department of Radiation Oncology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 32, Nijmegen, The Netherlands
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152
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Genome-wide association study reveals two novel risk alleles for incident obstructive sleep apnea in the EPISONO cohort. Sleep Med 2020; 66:24-32. [DOI: 10.1016/j.sleep.2019.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 08/02/2019] [Accepted: 08/07/2019] [Indexed: 01/25/2023]
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153
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Nguyen T, Lee S, Yang YA, Ahn C, Sim JH, Kei TG, Barnard KN, Yu H, Millano SK, Chen X, Parrish CR, Song J. The role of 9-O-acetylated glycan receptor moieties in the typhoid toxin binding and intoxication. PLoS Pathog 2020; 16:e1008336. [PMID: 32084237 PMCID: PMC7055914 DOI: 10.1371/journal.ppat.1008336] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 03/04/2020] [Accepted: 01/20/2020] [Indexed: 12/20/2022] Open
Abstract
Typhoid toxin is an A2B5 toxin secreted from Salmonella Typhi-infected cells during human infection and is suggested to contribute to typhoid disease progression and the establishment of chronic infection. To deliver the enzymatic 'A' subunits of the toxin to the site of action in host cells, the receptor-binding 'B' subunit PltB binds to the trisaccharide glycan receptor moieties terminated in N-acetylneuraminic acid (Neu5Ac) that is α2-3 or α2-6 linked to the underlying disaccharide, galactose (Gal) and N-acetylglucosamine (GlcNAc). Neu5Ac is present in both unmodified and modified forms, with 9-O-acetylated Neu5Ac being the most common modification in humans. Here we show that host cells associated with typhoid toxin-mediated clinical signs express both unmodified and 9-O-acetylated glycan receptor moieties. We found that PltB binds to 9-O-acetylated α2-3 glycan receptor moieties with a markedly increased affinity, while the binding affinity to 9-O-acetylated α2-6 glycans is only slightly higher, as compared to the affinities of PltB to the unmodified counterparts, respectively. We also present X-ray co-crystal structures of PltB bound to related glycan moieties, which supports the different effects of 9-O-acetylated α2-3 and α2-6 glycan receptor moieties on the toxin binding. Lastly, we demonstrate that the cells exclusively expressing unmodified glycan receptor moieties are less susceptible to typhoid toxin than the cells expressing 9-O-acetylated counterparts, although typhoid toxin intoxicates both cells. These results reveal a fine-tuning mechanism of a bacterial toxin that exploits specific chemical modifications of its glycan receptor moieties for virulence and provide useful insights into the development of therapeutics against typhoid fever.
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Affiliation(s)
- Tri Nguyen
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Sohyoung Lee
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Yi-An Yang
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Changhwan Ahn
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Ji Hyun Sim
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Tiffany G. Kei
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Karen N. Barnard
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Hai Yu
- Department of Chemistry, University of California, Davis, California, United States of America
| | - Shawn K. Millano
- Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Xi Chen
- Department of Chemistry, University of California, Davis, California, United States of America
| | - Colin R. Parrish
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Jeongmin Song
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
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154
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Klaus C, Hansen JN, Ginolhac A, Gérard D, Gnanapragassam VS, Horstkorte R, Rossdam C, Buettner FFR, Sauter T, Sinkkonen L, Neumann H, Linnartz-Gerlach B. Reduced sialylation triggers homeostatic synapse and neuronal loss in middle-aged mice. Neurobiol Aging 2020; 88:91-107. [PMID: 32087947 DOI: 10.1016/j.neurobiolaging.2020.01.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/06/2020] [Accepted: 01/14/2020] [Indexed: 12/21/2022]
Abstract
Sialic acid-binding Ig-like lectin (Siglec) receptors are linked to neurodegenerative processes, but the role of sialic acids in physiological aging is still not fully understood. We investigated the impact of reduced sialylation in the brain of mice heterozygous for the enzyme glucosamine-2-epimerase/N-acetylmannosamine kinase (GNE+/-) that is essential for sialic acid biosynthesis. We demonstrate that GNE+/- mice have hyposialylation in different brain regions, less synapses in the hippocampus and reduced microglial arborization already at 6 months followed by increased loss of neurons at 12 months. A transcriptomic analysis revealed no pro-inflammatory changes indicating an innate homeostatic immune process leading to the removal of synapses and neurons in GNE+/- mice during aging. Crossbreeding with complement C3-deficient mice rescued the earlier onset of neuronal and synaptic loss as well as the changes in microglial arborization. Thus, sialic acids of the glycocalyx contribute to brain homeostasis and act as a recognition system for the innate immune system in the brain.
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Affiliation(s)
- Christine Klaus
- Neural Regeneration, Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Bonn, Germany
| | - Jan N Hansen
- Biophysical Imaging, Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Aurélien Ginolhac
- Epigenetics Team, Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Belvaux, Luxembourg
| | - Deborah Gérard
- Epigenetics Team, Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Belvaux, Luxembourg
| | - Vinayaga S Gnanapragassam
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Rüdiger Horstkorte
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Charlotte Rossdam
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Falk F R Buettner
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Thomas Sauter
- Epigenetics Team, Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Belvaux, Luxembourg
| | - Lasse Sinkkonen
- Epigenetics Team, Systems Biology Group, Life Sciences Research Unit, University of Luxembourg, Belvaux, Luxembourg
| | - Harald Neumann
- Neural Regeneration, Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Bonn, Germany.
| | - Bettina Linnartz-Gerlach
- Neural Regeneration, Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Bonn, Germany
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155
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Hou R, Huo X, Zhang S, Xu C, Huang Y, Xu X. Elevated levels of lead exposure and impact on the anti-inflammatory ability of oral sialic acids among preschool children in e-waste areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134380. [PMID: 31678878 DOI: 10.1016/j.scitotenv.2019.134380] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/24/2019] [Accepted: 09/08/2019] [Indexed: 02/05/2023]
Abstract
The oral health of preschool children in an electronic waste (e-waste) area is susceptible to lead (Pb) exposure increasing the risk of dental caries and causing periodontitis and other oral diseases. The aim of the present study is to investigate the relationship between chronic exposure to Pb and oral anti-inflammatory potential of preschool children. For this analysis, 574 preschool children from 2.5 to 6 years of age were recruited between November and December 2017, in which 357 preschool children were from Guiyu (n = 357), an e-waste-contaminated town, and 217 from Haojiang Shantou. We measured the levels of child blood Pb, salivary sialic acid, serum interleukin-6 (IL-6) and serum tumor necrosis factor-α (TNF-α), and investigated the prevalence of dental caries in deciduous teeth. The medians of blood Pb levels, serum IL-6 and TNF-α were significantly higher in the Guiyu children than in Haojiang children. Concomitantly, salivary sialic acids were lower in the Guiyu children [9.58 (3.97, 18.42) mg/dL] than in Haojiang [17.57 (5.95, 24.23) mg/dL]. Additionally, the prevalence of dental caries in deciduous teeth was significantly higher in the Guiyu children than in Haojiang (62.5% vs. 53.9%). Blood Pb levels were negatively correlated with salivary sialic acids, in which IL-6 played as a mediator of the association between blood Pb levels and saliva sialic acid concentrations according to the mediation model. To our knowledge, this is the first report on the potential association between chronic Pb exposure and the anti-inflammatory ability of oral sialic acids among preschool children. These results suggest that the chronic Pb exposure can reduce salivary sialic acid levels, attenuate oral anti-inflammatory potential and increase the potential risk of dental caries in deciduous teeth among preschool children in an e-waste site.
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Affiliation(s)
- Ruikun Hou
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Xia Huo
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Shaocheng Zhang
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Cheng Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Yu Huang
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China
| | - Xijing Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, Guangdong, China; Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, Guangdong, China.
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156
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Mi YM, Qi Q, Zhang L, Wang XF, Chen ZM, Hua CZ. Assessment of serum sialic acid correlated with C3 in children with Mycoplasma pneumoniae pneumonia. J Clin Lab Anal 2020; 34:e23078. [PMID: 31907994 PMCID: PMC7083476 DOI: 10.1002/jcla.23078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/23/2019] [Accepted: 07/14/2019] [Indexed: 11/25/2022] Open
Abstract
Background Different from the diagnosis of bacterial infections, Mycoplasma pneumoniae pneumonia (MPP) is still lacking of convenient non‐specific laboratory parameters. Method A total of 125 children with MPP were included in the MPP group and 89 children with Mycoplasma‐negative pneumonia were included in the control group, and the sera were collected from the children at both the acute and recovery stages in the two groups. Results The sialic acid and C3 in the MPP group were significantly higher than those in the control group both at the acute and at the recovery stage. On the other hand, the sialic acid and C3 at the acute stage were significantly higher than those at the recovery stage in the MPP group. However, in the control group, the sialic acid and C3 demonstrated IgG exhibited no significant change between the acute stage and the recovery stage. Lastly, positive correlations between sialic acid level and C3 level were identified in the MPP group at both acute and recovery stages. Conclusion Our study demonstrated that the serum sialic acid correlated with C3 specifically increased in children with MPP, indicating that it might be the important non‐specific parameters in the diagnosis of MPP.
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Affiliation(s)
- Yu-Mei Mi
- Division of Infectious Disease, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Qi Qi
- Department of Infectious Disease, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Li Zhang
- Division of Infectious Disease, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Xiao-Fang Wang
- Department of Pediatrics, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Zhi-Min Chen
- Division of Respiration, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chun-Zhen Hua
- Division of Infectious Disease, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
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157
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Wu ZL, Person AD, Zou Y, Burton AJ, Singh R, Burroughs B, Fryxell D, Tatge TJ, Manning T, Wu G, Swift KAD, Kalabokis V. Differential distribution of N- and O-Glycans and variable expression of sialyl-T antigen on HeLa cells—Revealed by direct fluorescent glycan imaging. Glycobiology 2020; 30:454-462. [DOI: 10.1093/glycob/cwz110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/22/2019] [Accepted: 12/23/2019] [Indexed: 12/30/2022] Open
Abstract
AbstractCells are covered with glycans. The expression and distribution of specific glycans on the surface of a cell are important for various cellular functions. Imaging these glycans is essential to aid elucidation of their biological roles. Here, utilizing methods of direct fluorescent glycan imaging, in which fluorescent sialic acids are directly incorporated into substrate glycans via recombinant sialyltranferases, we report the differential distribution of N- and O-glycans and variable expression of sialyl-T antigen on HeLa cells. While the expression of N-glycans tends to be more peripheral at positions where cell–cell interaction occurs, O-glycan expression is more granular but relatively evenly distributed on positive cells. While N-glycans are expressed on all cells, sialyl-T antigen expression exhibits a wide spectrum of variation with some cells being strongly positive and some cells being almost completely negative. The differential distribution of N- and O-glycans on cell surface reflects their distinctive roles in cell biology.
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Affiliation(s)
- Zhengliang L Wu
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Anthony D Person
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | | | - Andrew J Burton
- Bio-Techne, Tocris Bioscience, The Watkins Building, Atlantic Road, Avonmouth, Bristol BS11 9QD, UK
| | - Ravinder Singh
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Barbara Burroughs
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Dan Fryxell
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Timothy J Tatge
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Timothy Manning
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Guoping Wu
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
| | - Karl A D Swift
- Bio-Techne, Tocris Bioscience, The Watkins Building, Atlantic Road, Avonmouth, Bristol BS11 9QD, UK
| | - Vassili Kalabokis
- Bio-Techne, R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA, and
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158
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Wang N, Wang M, Yu Y, Yang G, Su X. Label-free fluorescence assay based on near-infrared B,N-doped carbon dots as a fluorescent probe for the detection of sialic acid. NEW J CHEM 2020. [DOI: 10.1039/c9nj05981d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A simple and sensitive sensing strategy for sialic acid activity detection on the basis of novel near-infrared B,N co-doped carbon dots was constructed.
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Affiliation(s)
- Nan Wang
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Mengke Wang
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yang Yu
- State Key Lab of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Guojian Yang
- State Key Lab of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Xingguang Su
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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159
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Matsui T, Komamoto K, Igarashi H, Kurohmaru M. Characterization of glycoconjugates and sialic acid modification in the olfactory bulb of the Chinese fire-bellied newt (Cynops orientalis). Anat Histol Embryol 2019; 49:260-269. [PMID: 31854005 DOI: 10.1111/ahe.12524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/27/2019] [Accepted: 12/04/2019] [Indexed: 01/12/2023]
Abstract
Diverse glycoconjugates are expressed in the vertebrate olfactory bulb and serve as guidance cues for axons of nasal receptor neurons. Although the involvement of glycoconjugates in the segregation of the olfactory pathway has been suggested, it is poorly understood in salamanders. In this study, lectin histochemistry was used to determine glycoconjugate distribution in the olfactory bulb of the Chinese fire-bellied newt (Cynops orientalis). Succinylated wheat germ agglutinin (sWGA), Ricinus communis agglutinin-I and Lens culinaris agglutinin showed different bindings in the nerve fibre layer or glomerular layer, or both, between the main and accessory olfactory bulbs. We then investigated the lectin-binding pattern after the removal of terminal sialic acids using neuraminidase. Desialylation resulted in a change in the binding reactivities with seven lectins. Wheat germ agglutinin, sWGA, soybean agglutinin (SBA) and peanut agglutinin showed different degrees of binding between the main and accessory olfactory bulbs. In addition, SBA showed a heterogeneous labelling of glomeruli in the rostral region of the main olfactory bulb. Our results suggest that terminal sialic acids mask the heterogeneity of glycoconjugates in the olfactory bulb of C. orientalis.
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Affiliation(s)
- Toshiyasu Matsui
- Laboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Japan
| | - Kazuyuki Komamoto
- Laboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Japan
| | - Hitomi Igarashi
- Laboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Japan
| | - Masamichi Kurohmaru
- Laboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Japan
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160
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Vergé C, Bouchatal A, Chirat F, Guérardel Y, Maftah A, Petit JM. Involvement of ST6Gal I-mediated α2,6 sialylation in myoblast proliferation and differentiation. FEBS Open Bio 2019; 10:56-69. [PMID: 31622539 PMCID: PMC6943236 DOI: 10.1002/2211-5463.12745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/24/2019] [Accepted: 10/16/2019] [Indexed: 12/20/2022] Open
Abstract
Myogenesis is a physiological process which involves the proliferation of myoblasts and their differentiation into multinucleated myotubes, which constitute the future muscle fibers. Commitment of myoblasts to differentiation is regulated by the balance between the myogenic factors Pax7 and MyoD. The formation of myotubes requires the presence of glycans, especially N‐glycans, on the cell surface. We examined here the involvement of α2,6 sialylation during murine myoblastic C2C12 cell differentiation by generating a st6gal1‐knockdown C2C12 cell line; these cells exhibit reduced proliferative potential and precocious differentiation due to the low expression of Pax7. The earlier fusion of st6gal1‐knockdown cells leads to a high fusion index and a drop in reserve cells (Pax7+/MyoD−). In st6gal1‐knockdown cells, the Notch pathway is inactivated; consequently, Pax7 expression is virtually abolished, leading to impairment of the proliferation rate. All these results indicate that the decrease in α2,6 sialylation of N‐glycans favors the differentiation of most cells and provokes a significant loss of reserve cells.
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Affiliation(s)
- Caroline Vergé
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Amel Bouchatal
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Frédéric Chirat
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Yann Guérardel
- UGSF, UMR 8576, CNRS, University of Lille, Villeneuve d'Ascq, France
| | - Abderrahman Maftah
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
| | - Jean-Michel Petit
- PEIRENE, EA 7500, Glycosylation and Cell Differentiation, University of Limoges, France
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161
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Peng Y, Wang L, Zhang Y, Bao H, Lu H. Stable Isotope Sequential Derivatization for Linkage-Specific Analysis of Sialylated N-Glycan Isomers by MS. Anal Chem 2019; 91:15993-16001. [PMID: 31730330 DOI: 10.1021/acs.analchem.9b04727] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sialylated N-glycans play pivotal role in several important biological and pathological processes. Their sialyl-linkage isomers, mostly α-2,3- and α-2,6-linked, act differently during the cellular events and several diseases. While mass spectrometry (MS) technology is a powerful tool in N-glycome analysis, it still suffers from an inability to distinguish linkage isomers of native N-glycans. Herein, we described a sequential selective derivatization method, by which α-2,6- and α-2,3-linked sialic acids are sequentially labeled with methylamide incorporated with a different stable isotope. Isobaric labeling avoids inducing bias in ionization efficiency and chromatographic behavior. In optimized reaction conditions, high derivatization selectivity (∼99%) was achieved for both α-2,3- and α-2,6-linked sialic acid. High accuracy of quantitation within a dynamic range of 2 orders of magnitude and high reproducibility (CV < 20%, n = 3) were demonstrated using standard glycans and multisialylated N-glycans. Finally, this method was applied in profiling the N-glycome of serum from CRC patients, where a level of six sialyl-linkage isomers were found to be altered significantly compared with that from healthy individuals.
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162
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Awasthi K, Arya R, Bhattacharya A, Bhattacharya S. The Inherited Neuromuscular Disorder GNE Myopathy: Research to Patient Care. Neurol India 2019; 67:1213-1219. [PMID: 31744945 DOI: 10.4103/0028-3886.271259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Inherited neuromuscular diseases are a heterogeneous group of rare diseases for which the low general awareness leads to frequent misdiagnosis. Advances in DNA sequencing technologies are changing this situation, and it is apparent that these diseases are not as rare as previously thought. Knowledge of the pathogenic variants in patients is helping in research efforts to develop new therapies. Here we present a review of current knowledge in GNE myopathy, a rare neuromuscular disorder caused by mutations in the GNE gene that catalyzes the biosynthesis of sialic acid. The most common initial symptom is foot drop caused by anterior tibialis muscle weakness. There is a progressive wasting of distal skeletal muscles in the lower and upper extremities as well. The quadriceps is relatively spared, which is a distinguishing feature of this disease. The characteristic histological features include autophagic rimmed vacuoles with inclusion bodies. GNE variant analysis of Indian patients has revealed a founder mutation (p.Val727Met) common within the normal Indian populations, especially in the state of Gujurat. We discuss therapeutic options, including metabolite supplementation, pharmacological chaperones, and gene therapy. Initiatives that bring together patients, researchers, and physicians are necessary to improve knowledge and treatment for these rare disorders.
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Affiliation(s)
- Kapila Awasthi
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Ranjana Arya
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Alok Bhattacharya
- School of Life Sciences; World without GNE Myopathy, Jawaharlal Nehru University, New Delhi, India
| | - Sudha Bhattacharya
- World without GNE Myopathy, Jawaharlal Nehru University; School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
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163
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Huizing M, Yardeni T, Fuentes F, Malicdan MC, Leoyklang P, Volkov A, Dekel B, Brede E, Blake J, Powell A, Chatrathi H, Anikster Y, Carrillo N, Gahl WA, Kopp JB. Rationale and Design for a Phase 1 Study of N-Acetylmannosamine for Primary Glomerular Diseases. Kidney Int Rep 2019; 4:1454-1462. [PMID: 31701055 PMCID: PMC6829193 DOI: 10.1016/j.ekir.2019.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/12/2019] [Accepted: 06/17/2019] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Sialic acids are important contributors to the polyanionic component of the glomerular filtration barrier, which regulates permeability selectivity. Pathologic glomerular hyposialylation, associated with podocyte effacement, has been implicated in human and mouse glomerulopathies. Oral treatment with N-acetylmannosamine (ManNAc), the uncharged precursor of sialic acid, ameliorates glomerular pathology in different models of glomerular disease. METHODS Here we explore the sialylation status of kidney biopsies obtained from 27 subjects with various glomerular diseases using lectin histochemistry. RESULTS We identified severe glomerular hyposialylation in 26% of the biopsies. These preliminary findings suggest that this condition may occur relatively frequently and may be a novel target for therapy. We describe the background, rationale, and design of a phase 1 study to test safety, tolerability, and pharmacokinetics of ManNAc in subjects with primary podocyte diseases. CONCLUSION We recently demonstrated that ManNAc was safe and well tolerated in a first-in-human phase 1 study in subjects with UDP-N-acetylglucosamine (GlcNAc) 2-epimerase/ManNAc kinase (GNE) myopathy, a disorder of impaired sialic acid synthesis. Using previous preclinical and clinical data, we propose to test ManNAc therapy for subjects with primary glomerular diseases. Even though the exact mechanisms, affected cell types, and pathologic consequences of glomerular hyposialylation need further study, treatment with this physiological monosaccharide could potentially replace or supplement existing glomerular diseases therapies.
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Affiliation(s)
- Marjan Huizing
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Tal Yardeni
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
- Center for Mitochondrial and Epigenomic Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Federico Fuentes
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - May C.V. Malicdan
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Petcharat Leoyklang
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Alexander Volkov
- Pediatric Nephrology Unit and Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Benjamin Dekel
- Pediatric Nephrology Unit and Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Emily Brede
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Jodi Blake
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Alva Powell
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Harish Chatrathi
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Yair Anikster
- Metabolic Disease Unit, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nuria Carrillo
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - William A. Gahl
- Human Biochemical Genetics Section, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jeffrey B. Kopp
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
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164
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Zhang C, Chen J, Liu Y, Xu D. Sialic acid metabolism as a potential therapeutic target of atherosclerosis. Lipids Health Dis 2019; 18:173. [PMID: 31521172 PMCID: PMC6745061 DOI: 10.1186/s12944-019-1113-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 08/30/2019] [Indexed: 01/08/2023] Open
Abstract
Sialic acid (Sia), the acylated derivative of the nine-carbon sugar neuraminic acid, is a terminal component of the oligosaccharide chains of many glycoproteins and glycolipids. In light of its important biological and pathological functions, the relationship between Sia and coronary artery disease (CAD) has been drawing great attentions recently. Large-scale epidemiological surveys have uncovered a positive correlation between plasma total Sia and CAD risk. Further research demonstrated that N-Acetyl-Neuraminic Acid, acting as a signaling molecule, triggered myocardial injury via activation of Rho/ROCK-JNK/ERK signaling pathway both in vitro and in vivo. Moreover, there were some evidences showing that the aberrant sialylation of low-density lipoprotein, low-density lipoprotein receptor and blood cells was involved in the pathological process of atherosclerosis. Significantly, the Sia regulates immune response by binding to sialic acid-binding immunoglobulin-like lectin (Siglecs). The Sia-Siglecs axis is involved in the immune inflammation of atherosclerosis. The generation of Sia and sialylation of glycoconjugate both depend on many enzymes, such as sialidase, sialyltransferase and trans-sialidase. Abnormal activation or level of these enzymes associated with atherosclerosis, and inhibitors of them might be new CAD treatments. In this review, we focus on summarizing current understanding of Sia metabolism and of its relevance to atherosclerosis.
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Affiliation(s)
- Chao Zhang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, Hunan, China.,Department of Health Management Center, Hunan Provincial People's Hospital, 61 Jiefang West Road, Changsha, 410005, Hunan, China
| | - Jingyuan Chen
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, Hunan, China
| | - Yuhao Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, Hunan, China
| | - Danyan Xu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, Hunan, China.
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165
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Kooner AS, Yu H, Chen X. Synthesis of N-Glycolylneuraminic Acid (Neu5Gc) and Its Glycosides. Front Immunol 2019; 10:2004. [PMID: 31555264 PMCID: PMC6724515 DOI: 10.3389/fimmu.2019.02004] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/07/2019] [Indexed: 12/12/2022] Open
Abstract
Sialic acids constitute a family of negatively charged structurally diverse monosaccharides that are commonly presented on the termini of glycans in higher animals and some microorganisms. In addition to N-acetylneuraminic acid (Neu5Ac), N-glycolyl neuraminic acid (Neu5Gc) is among the most common sialic acid forms in nature. Nevertheless, unlike most animals, human cells loss the ability to synthesize Neu5Gc although Neu5Gc-containing glycoconjugates have been found on human cancer cells and in various human tissues due to dietary incorporation of Neu5Gc. Some pathogenic bacteria also produce Neu5Ac and the corresponding glycoconjugates but Neu5Gc-producing bacteria have yet to be found. In addition to Neu5Gc, more than 20 Neu5Gc derivatives have been found in non-human vertebrates. To explore the biological roles of Neu5Gc and its naturally occurring derivatives as well as the corresponding glycans and glycoconjugates, various chemical and enzymatic synthetic methods have been developed to obtain a vast array of glycosides containing Neu5Gc and/or its derivatives. Here we provide an overview on various synthetic methods that have been developed. Among these, the application of highly efficient one-pot multienzyme (OPME) sialylation systems in synthesizing compounds containing Neu5Gc and derivatives has been proven as a powerful strategy.
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Affiliation(s)
| | - Hai Yu
- Department of Chemistry, University of California, Davis, Davis, CA, United States
| | - Xi Chen
- Department of Chemistry, University of California, Davis, Davis, CA, United States
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166
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Regular alteration of protein glycosylation in skeletal muscles of hibernating Daurian ground squirrels (Spermophilus dauricus). Comp Biochem Physiol B Biochem Mol Biol 2019; 237:110323. [PMID: 31454680 DOI: 10.1016/j.cbpb.2019.110323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 11/21/2022]
Abstract
Glycosylation is one of the most common post-translational protein modifications and is closely associated with muscle atrophy. This study aims to investigate the changes in glycan profiles in the fast-twitch extensor digitorum longus (EDL) muscles of Daurian ground squirrels (Spermophilus dauricus) during hibernation as well as the correlation between protein glycosylation and muscle atrophy prevention in hibernating animals. The results showed that there was no significant change in the muscle-to-body mass ratio, muscle fiber cross-sectional area (CSA), fiber distribution and ultrastructures in the EDL muscles of ground squirrels during hibernation. Alterations of six glycans comprising sialic acid α2-3 galactose (Sia2-3Gal) and Fucα1-2Galβ1-4Glc(NAc) in the EDL muscles were observed. In addition, the observed downregulation of sialyltransferase (ST3Gals) mRNA levels and upregulation of fucosyltransferase (FUT1 and FUT2) mRNA levels during hibernation and the subsequent restoration to normal levels during periodic interbout arousal were consistent with the changes in sialic acid and fucose modifications. Our results indicate that changes in ST3Gals and FUTs in the EDL muscles of Daurian ground squirrels during hibernation can alter sialylation and fucosylation of muscle glycoproteins, which may protect the skeletal muscles of hibernating Daurian ground squirrels from disuse atrophy.
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167
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Zhao Y, Mahajan G, Kothapalli CR, Sun XL. Sialylation status and mechanical properties of THP-1 macrophages upon LPS stimulation. Biochem Biophys Res Commun 2019; 518:573-578. [PMID: 31445704 DOI: 10.1016/j.bbrc.2019.08.089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 08/15/2019] [Indexed: 11/20/2022]
Abstract
Cell surface receptors are the key contributors of macrophage function. Most macrophage cell surface receptors are glycoproteins with sialic acids at the terminal of their glycans. It is well recognized that lipopolysaccharide (LPS) induces cell surface sialylation changes that may in turn contribute to macrophage functions. In addition, cellular mechanics such as elasticity is also a major determinant of macrophage function, which in turn is modulated by LPS. In this report, we characterized the sialylation status of macrophages upon LPS stimulation and assessed the changes in its mechanical properties and function. Specifically, we confirmed that sialylation status is closely related to macrophage biomechanical characteristics (elastic modulus, tether force, tether radius, adhesion force, and membrane tension) and thus directly involved in macrophage function. Further, we modulated macrophage sialylation status by feeding the cell with exogenous free sialic acid (Neu5Ac, Neu5Gc) and sialidase inhibitors, and examined the resulting effects on cellular mechanics and function. A systematic recognition of sialylation status related to cellular mechanics of macrophages will contribute to defining their phenotypes and elucidate macrophage functional diversity.
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Affiliation(s)
- Yu Zhao
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, OH 44115, United States
| | - Gautam Mahajan
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, OH 44115, United States
| | - Chandrasekhar R Kothapalli
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, OH 44115, United States.
| | - Xue-Long Sun
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, OH 44115, United States; Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, OH 44115, United States.
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168
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Paterlini V, Porpiglia NM, De Palo EF, Tagliaro F. Asialo-transferrin: Biochemical aspects and association with alcohol abuse investigation. Alcohol 2019; 78:43-50. [PMID: 30890358 DOI: 10.1016/j.alcohol.2019.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/19/2019] [Accepted: 03/06/2019] [Indexed: 11/20/2022]
Abstract
Asialo-human transferrin (asialo-hTf) is a glycoform of the human serum protein transferrin characterized by the lack of the sialic acid (SA) terminal unit. It is known that glycosylation micro-heterogeneity and the presence of SA are strongly involved in protein functioning and pathophysiological activities. Some hTf glycoforms are valuable biomarkers for the detection of both genetic defects of glycosylation and/or sialoform distribution changes. The detection of the carbohydrate deficient transferrin (CDT) glycoforms is currently a widely employed method for the diagnosis of chronic alcohol abuse. The physiological significance of asialo-hTf is still unclear, despite its important biological implications. The current knowledge suggests that asialo-hTf may be involved in regulation of iron transport and release at the hepatic level, which, consequently, could strongly be affected by alcohol consumption. For these reasons, a deeper understanding of asialo-hTf structure and its physiological role is required, and an improved method of its analysis would favor the detection of both chronic abuse and other habits of alcohol intake and/or misuse. Thus, suitable analytical methods possessing higher sensitivity and specificity in comparison with the currently available techniques are certainly recommended. The present review summarizes the studies on asialo-hTf structure, roles, and detection techniques mainly in relation to its possible use as a potentially additional useful biomarker of alcohol abuse, and underlines its prospective value as a forensic and diagnostic tool.
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Affiliation(s)
- Veronica Paterlini
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Verona, Italy
| | - Nadia Maria Porpiglia
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Verona, Italy
| | - Elio Franco De Palo
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Verona, Italy
| | - Franco Tagliaro
- Department of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Verona, Italy; Institute of Pharmacy and Translational Medicine, Sechenov First Medical University, Moscow, Russia.
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169
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Mensah SA, Harding IC, Zhang M, Jaeggli MP, Torchilin VP, Niedre MJ, Ebong EE. Metastatic cancer cell attachment to endothelium is promoted by endothelial glycocalyx sialic acid degradation. AIChE J 2019; 65. [PMID: 31367063 PMCID: PMC6668365 DOI: 10.1002/aic.16634] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
While it is known that cancer cell interactions with vascular endothelial cells (ECs) drive metastatic cancer cell extravasation from blood vessels into secondary tumor sites, the mechanisms of action are still poorly understood. Here, we tested the hypothesis that neuraminidase‐induced degradation of EC surface glycocalyx (GCX), particularly the sialic acid (SA) residue components of the GCX, will substantially increase metastatic cancer cell attachment to ECs. To our knowledge, our study is the first to isolate the role of GCX SA residues in cancer cell attachment to the endothelium, which were found to be differentially affected by the presence of neuraminidase and to indeed regulate metastatic cancer cell homing to ECs. We hope that this work will eventually translate to identification of EC GCX‐based cancer markers that can be therapeutically targeted to hinder the progression of metastasis.
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Affiliation(s)
- Solomon A. Mensah
- Bioengineering Department Northeastern University Boston Massachusetts
| | - Ian C. Harding
- Bioengineering Department Northeastern University Boston Massachusetts
| | - Michelle Zhang
- Chemical Engineering Department Northeastern University Boston Massachusetts
| | | | | | - Mark J. Niedre
- Bioengineering Department Northeastern University Boston Massachusetts
- Electrical and Computer Engineering Department Northeastern University Boston Massachusetts
| | - Eno E. Ebong
- Bioengineering Department Northeastern University Boston Massachusetts
- Chemical Engineering Department Northeastern University Boston Massachusetts
- Neuroscience Department Albert Einstein College of Medicine New York New York
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170
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Paul TJ, Rübel S, Hildebrandt M, Strzelczyk AK, Spormann C, Lindhorst TK, Schmidt S. Thermosensitive Display of Carbohydrate Ligands on Microgels for Switchable Binding of Proteins and Bacteria. ACS APPLIED MATERIALS & INTERFACES 2019; 11:26674-26683. [PMID: 31282142 DOI: 10.1021/acsami.9b08537] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The synthesis of carbohydrate-functionalized thermosensitive poly(N-isopropylacrylamide) microgels and their ability to bind carbohydrate-binding pathogens upon temperature switch are reported. It is found that the microgels' binding affinity is increased above their lower critical solution temperature (LCST), enabling thermo-triggerable capture of pathogens. Here, a series of microgels with comparatively low mannose functionalization degrees below 1 mol % is achieved by a single polymerization step. Upon increase in mannose density, the microgel size increases, and the LCST decreases to 26 °C. Clustering with concanavalin A indicated that binding affinity is enhanced by a higher mannose content and by raising the temperature above the LCST. Binding studies with Escherichia coli confirm stronger specific interactions above the LCST and formation of mechanically stable aggregates enabling efficient separation of E. coli by filtration. For small incubation times above the LCST, the microgels' potential to release pathogens again below the LCST is confirmed also. Compared to existing switchable scaffolds, microgels nearly entirely composed of a thermosensitive material undergo a large change in volume, which allows them to drastically vary the density of ligands to switch between capture and release. This straightforward yet novel approach is likely compatible with a broad range of bioactive ligands. Therefore, thermosensitive microgels represent a promising platform for the specific capture or release of cells or pathogens.
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Affiliation(s)
- Tanja J Paul
- Institute of Organic and Macromolecular Chemistry , Heinrich-Heine-University Düsseldorf , Universitätsstraße 1 , 40225 Düsseldorf , Germany
| | - Sophie Rübel
- Institute of Organic and Macromolecular Chemistry , Heinrich-Heine-University Düsseldorf , Universitätsstraße 1 , 40225 Düsseldorf , Germany
| | - Marco Hildebrandt
- Institute of Organic and Macromolecular Chemistry , Heinrich-Heine-University Düsseldorf , Universitätsstraße 1 , 40225 Düsseldorf , Germany
| | - Alexander K Strzelczyk
- Institute of Organic and Macromolecular Chemistry , Heinrich-Heine-University Düsseldorf , Universitätsstraße 1 , 40225 Düsseldorf , Germany
| | - Carina Spormann
- Otto Diels Institute of Organic Chemistry , Christiana Albertina University of Kiel , Otto-Hahn-Platz 3/4 , 24098 Kiel , Germany
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry , Christiana Albertina University of Kiel , Otto-Hahn-Platz 3/4 , 24098 Kiel , Germany
| | - Stephan Schmidt
- Institute of Organic and Macromolecular Chemistry , Heinrich-Heine-University Düsseldorf , Universitätsstraße 1 , 40225 Düsseldorf , Germany
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171
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Xia Q, Zhang Y, Li Z, Hou X, Feng N. Red blood cell membrane-camouflaged nanoparticles: a novel drug delivery system for antitumor application. Acta Pharm Sin B 2019; 9:675-689. [PMID: 31384529 PMCID: PMC6663920 DOI: 10.1016/j.apsb.2019.01.011] [Citation(s) in RCA: 306] [Impact Index Per Article: 61.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/30/2018] [Accepted: 11/28/2018] [Indexed: 12/20/2022] Open
Abstract
Erythrocytes (red blood cells, RBCs) are the most abundant circulating cells in the blood and have been widely used in drug delivery systems (DDS) because of their features of biocompatibility, biodegradability, and long circulating half-life. Accordingly, a "camouflage" comprised of erythrocyte membranes renders nanoparticles as a platform that combines the advantages of native erythrocyte membranes with those of nanomaterials. Following injection into the blood of animal models, the coated nanoparticles imitate RBCs and interact with the surroundings to achieve long-term circulation. In this review, the biomimetic platform of erythrocyte membrane-coated nano-cores is described with regard to various aspects, with particular focus placed on the coating mechanism, preparation methods, verification methods, and the latest anti-tumor applications. Finally, further functional modifications of the erythrocyte membranes and attempts to fuse the surface properties of multiple cell membranes are discussed, providing a foundation to stimulate extensive research into multifunctional nano-biomimetic systems.
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Key Words
- ABC, accelerated blood clearance
- APCs, antigen presenting cells
- Antitumor
- AuNCs, gold nanocages
- AuNPs, gold nanoparticles
- Biomimetic nanoparticles
- C8bp, C8 binding protein
- CR1, complement receptor 1
- DAF, decay accelerating factor
- DDS, drug delivery systems
- DLS, dynamic light scattering
- Dox, doxorubicin
- Drug delivery
- ECM, extracellular matrix
- EPR, enhanced permeability and retention
- ETA, endothelin A
- EpCam, epithelial cell adhesion molecule
- FA, folic acid
- GA, gambogic acid
- H&E, hematoxylin and eosin
- HRP, homologous restriction protein
- MCP, membrane cofactor protein
- MNCs, magnetic nanoclusters
- MNs, magnetic nanoparticles
- MPS, mononuclear phagocyte system
- MRI, magnetic resonance imaging
- MSNs, mesoporous silica nanoparticles
- Membrane
- NIR, near-infrared radiation
- Nanoparticles
- PAI, photoacoustic imaging
- PBS, phosphate buffered saline
- PCL, poly(caprolactone)
- PDT, photodynamic therapy
- PEG, polyethylene glycol
- PFCs, perfluorocarbons
- PLA, poly(lactide acid)
- PLGA, poly(d,l-lactide-co-glycolide)
- PPy, polypyrrole
- PS, photosensitizers
- PTT, photothermal therapy
- PTX, paclitaxel
- RBCM-NPs, RBCM-coated nanoparticles
- RBCMs, RBC membranes
- RBCs, red blood cells
- RES, reticuloendothelial system
- ROS, reactive oxygen species
- RVs, RBCM-derived vesicles
- Red blood cells
- SEM, scanning electron microscopy
- SIRPα, signal-regulatory protein alpha
- TEM, transmission electron microscopy
- TEMPO, 2,2,6,6-tetramethylpiperidin-1-yl oxyl
- TPP, triphenylphosphonium
- UCNPs, upconversion nanoparticles
- UV, ultraviolet
- rHuPH20, recombinant hyaluronidase, PH20
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Affiliation(s)
| | | | | | | | - Nianping Feng
- Department of Pharmaceutical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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172
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Gurung MK, Altermark B, Helland R, Smalås AO, Ræder ILU. Features and structure of a cold active N-acetylneuraminate lyase. PLoS One 2019; 14:e0217713. [PMID: 31185017 PMCID: PMC6559660 DOI: 10.1371/journal.pone.0217713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/16/2019] [Indexed: 11/23/2022] Open
Abstract
N-acetylneuraminate lyases (NALs) are enzymes that catalyze the reversible cleavage and synthesis of sialic acids. They are therefore commonly used for the production of these high-value sugars. This study presents the recombinant production, together with biochemical and structural data, of the NAL from the psychrophilic bacterium Aliivibrio salmonicida LFI1238 (AsNAL). Our characterization shows that AsNAL possesses high activity and stability at alkaline pH. We confirm that these properties allow for the use in a one-pot reaction at alkaline pH for the synthesis of N-acetylneuraminic acid (Neu5Ac, the most common sialic acid) from the inexpensive precursor N-acetylglucosamine. We also show that the enzyme has a cold active nature with an optimum temperature for Neu5Ac synthesis at 20°C. The equilibrium constant for the reaction was calculated at different temperatures, and the formation of Neu5Ac acid is favored at low temperatures, making the cold active enzyme a well-suited candidate for use in such exothermic reactions. The specific activity is high compared to the homologue from Escherichia coli at three tested temperatures, and the enzyme shows a higher catalytic efficiency and turnover number for cleavage at 37°C. Mutational studies reveal that amino acid residue Asn 168 is important for the high kcat. The crystal structure of AsNAL was solved to 1.65 Å resolution and reveals a compact, tetrameric protein similar to other NAL structures. The data presented provides a framework to guide further optimization of its application in sialic acid production and opens the possibility for further design of the enzyme.
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Affiliation(s)
- Man Kumari Gurung
- The Norwegian Structural Biology Center (NorStruct), Department of Chemistry, UiT- The Arctic University of Norway, Tromsø, Norway
| | - Bjørn Altermark
- The Norwegian Structural Biology Center (NorStruct), Department of Chemistry, UiT- The Arctic University of Norway, Tromsø, Norway
| | - Ronny Helland
- The Norwegian Structural Biology Center (NorStruct), Department of Chemistry, UiT- The Arctic University of Norway, Tromsø, Norway
| | - Arne O. Smalås
- The Norwegian Structural Biology Center (NorStruct), Department of Chemistry, UiT- The Arctic University of Norway, Tromsø, Norway
| | - Inger Lin U. Ræder
- The Norwegian Structural Biology Center (NorStruct), Department of Chemistry, UiT- The Arctic University of Norway, Tromsø, Norway
- * E-mail:
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173
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Gao X, Zhang F, Wu M, Wu Z, Shang G. Production of N-Acetyl-d-neuraminic Acid by Whole Cells Expressing Bacteroides thetaiotaomicron N-Acetyl-d-glucosamine 2-Epimerase and Escherichia coli N-Acetyl-d-neuraminic Acid Aldolase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6285-6291. [PMID: 31117501 DOI: 10.1021/acs.jafc.9b01839] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
N-Acetyl-d-neuraminic acid (Neu5Ac) is a potential baby nutrient and the key precursor of antiflu medicine Zanamivir. The Neu5Ac chemoenzymatic synthesis consists of N-acetyl-d-glucosamine epimerase (AGE)-catalyzed epimerization of N-acetyl-d-glucosamine (GlcNAc) to N-acetyl-d-mannosamine (ManNAc) and aldolase-catalyzed condensation between ManNAc and pyruvate. Herein, we cloned and characterized BT0453, a novel AGE, from a human gut symbiont Bacteroides thetaiotaomicron. BT0453 shows the highest soluble fraction among the AGEs tested. With GlcNAc and sodium pyruvate as substrates, Neu5Ac production by coupling whole cells expressing BT0453 and Escherichia coli N-acetyl-d-neuraminic acid aldolase was explored. After 36 h, a 53.6% molar yield, 3.6 g L-1 h-1 productivity and 42.9 mM titer of Neu5Ac were obtained. Furthermore, for the first time, the T7- BT0453-T7- nanA polycistronic unit was integrated into the E. coli genome, generating a chromosome-based biotransformation system. BT0453 protein engineering and metabolic engineering studies hold potential for the industrial production of Neu5Ac.
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Affiliation(s)
- Xinyue Gao
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences , Nanjing Normal University , Nanjing 210023 , China
| | - Feifei Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences , Nanjing Normal University , Nanjing 210023 , China
| | - Meng Wu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences , Nanjing Normal University , Nanjing 210023 , China
| | - Zhixin Wu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences , Nanjing Normal University , Nanjing 210023 , China
| | - Guangdong Shang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences , Nanjing Normal University , Nanjing 210023 , China
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174
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Agusti R, Gallo-Rodriguez C, de Lederkremer RM. Trypanosoma cruzi trans-sialidase. A tool for the synthesis of sialylated oligosaccharides. Carbohydr Res 2019; 479:48-58. [PMID: 31132642 DOI: 10.1016/j.carres.2019.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/07/2019] [Accepted: 05/15/2019] [Indexed: 12/14/2022]
Abstract
Cells are covered by a complex array of carbohydrates. Among them, sialosides are of key importance in intracellular adhesion, recognition and signaling. The need for structurally diverse sialosides impelled the search for efficient synthetic methods since their isolation from natural sources is a difficult task. The enzymatic approach obviates the need of a chemical synthesis for protecting or participating groups in the substrates. The trans-sialidase of Trypanosoma cruzi (TcTS) is highly stereospecific for the transfer of sialic acid from an α-sialylglycoside donor to a terminal β-galactopyranosyl unit in the acceptor substrate to form the α-Neu5Ac-(2 → 3)-β-D-Galp motif. The enzyme was cloned and easily available glycoproteins, e.g. fetuin, may be used as donors of sialic acid, constituting strong points for the scalability of TcTS-catalyzed reactions. This review outlines the preparative use of TcTS for the sialylation of oligosaccharides. A detailed description of the substrates used as sialic acid donors, the acceptor substrates and the methods employed to monitor the reaction is included.
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Affiliation(s)
- Rosalía Agusti
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - Carola Gallo-Rodriguez
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - Rosa M de Lederkremer
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina.
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175
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Hashimoto N, Ito S, Tsuchida A, Bhuiyan RH, Okajima T, Yamamoto A, Furukawa K, Ohmi Y, Furukawa K. The ceramide moiety of disialoganglioside (GD3) is essential for GD3 recognition by the sialic acid-binding lectin SIGLEC7 on the cell surface. J Biol Chem 2019; 294:10833-10845. [PMID: 31138648 DOI: 10.1074/jbc.ra118.007083] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/18/2019] [Indexed: 12/21/2022] Open
Abstract
To analyze the binding specificity of a sialic acid-recognizing lectin, sialic acid-binding Ig-like lectin 7 (SIGLEC7), to disialyl gangliosides (GD3s), here we established GD3-expressing cells by introducing GD3 synthase (GD3S or ST8SIA1) cDNA into a colon cancer cell line, DLD-1, that expresses no ligands for the recombinant protein SIGLEC7-Fc. SIGLEC7-Fc did not recognize newly-expressed GD3 on DLD-1 cells, even though GD3 was highly expressed, as detected by an anti-GD3 antibody. Because milk-derived GD3 could be recognized by this fusion protein when incorporated onto the surface of DLD-1 cells, we compared the ceramides in DLD-1-generated and milk-derived GD3s to identify the SIGLEC7-specific GD3 structures on the cell membrane, revealing that SIGLEC7 recognizes only GD3-containing regular ceramides but not phytoceramides. This was confirmed by knockdown/knockout of the sphingolipid delta(4)-desaturase/C4-monooxygenase (DES2) gene, involved in phytoceramide synthesis, disclosing that DES2 inhibition confers SIGLEC7 binding. Furthermore, knocking out fatty acid 2-hydroxylase also resulted in the emergence of SIGLEC7 binding to the cell surface. To analyze the effects of binding between SIGLEC7 and various GD3 species on natural killer function, we investigated cytotoxicity of peripheral blood mononuclear cells from healthy donors toward GD3S-transfected DLD-1 (DLD-1-GD3S) cells and DLD-1-GD3S cells with modified ceramides. We found that cytotoxicity is suppressed in DLD-1-GD3S cells with dehydroxylated GD3s. These results indicate that the ceramide structures in glycosphingolipids affect SIGLEC7 binding and distribution on the cell surface and influence cell sensitivity to killing by SIGLEC7-expressing effector cells.
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Affiliation(s)
- Noboru Hashimoto
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan,; Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, 3-18-5, Kuramoto-cho, Tokushima 770-8504, Japan
| | - Shizuka Ito
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan
| | - Akiko Tsuchida
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan
| | - Robiul H Bhuiyan
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan,; Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan, and
| | - Tetsuya Okajima
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan
| | - Akihito Yamamoto
- Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, 3-18-5, Kuramoto-cho, Tokushima 770-8504, Japan
| | - Keiko Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan, and
| | - Yuhsuke Ohmi
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan, and
| | - Koichi Furukawa
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-0065, Japan,; Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan, and.
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176
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Zhao L, Tian R, Shen Q, Liu Y, Liu L, Li J, Du G. Pathway Engineering of
Bacillus subtilis
for Enhanced
N
‐Acetylneuraminic Acid Production via Whole‐Cell Biocatalysis. Biotechnol J 2019; 14:e1800682. [DOI: 10.1002/biot.201800682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/15/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Lin Zhao
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Rongzhen Tian
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Qingyang Shen
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Yanfeng Liu
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
- Key Laboratory of Industrial BiotechnologyMinistry of EducationJiangnan University214122 Wuxi China
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177
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Neuroprotective Effects of Anthraquinones from Rhubarb in Central Nervous System Diseases. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:3790728. [PMID: 31223328 PMCID: PMC6541978 DOI: 10.1155/2019/3790728] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/21/2019] [Indexed: 12/21/2022]
Abstract
Rhubarb is a well-known traditional Chinese medicine; it has been used in China for thousands of years. Rhubarb anthraquinones are the major medicinal ingredients derived from rhubarb including emodin, aloe-emodin, chrysophanol, rhein, physcion, and danthron. These different anthraquinone derivatives alone or in combination play a therapeutic role in central nervous system diseases (CNSD), such as cerebral ischemic stroke, intracerebral hemorrhage, traumatic brain injury, brain tumor, Alzheimer's disease, depression, and others. We review the experimental studies on these six anthraquinones in the treatment of CNSD by consulting literature published in the last 20 years in PubMed and then give a future perspective on it. In the end of this paper some deficiencies related to these studies also have been pointed out.
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178
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Bornhöfft KF, Galuska SP. Glycans as Modulators for the Formation and Functional Properties of Neutrophil Extracellular Traps: Used by the Forces of Good and Evil. Front Immunol 2019; 10:959. [PMID: 31134066 PMCID: PMC6514094 DOI: 10.3389/fimmu.2019.00959] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022] Open
Abstract
A very common mechanism to trap pathogens is the release of DNA. Like flies in a spider's web, pathogens are enclosed in a sticky chromatin meshwork. Interestingly, plants already use this mechanism to catch bacteria. In mammals, especially neutrophils release their DNA to prevent an invasion of bacteria. These neutrophil extracellular traps (NETs) are equipped with antimicrobial molecules, including, for instance, histones, antimicrobial peptides, lactoferrin, and neutrophil elastase. Thus, in a defined area, pathogens and toxic molecules are directly adjacent. However, several of these antimicrobial substances are also cytotoxic for endogenous cells. It is, therefore, not surprising that distinct control mechanisms exist to prevent an exaggerated NETosis. Nevertheless, despite these endogenous control instruments, an extraordinary NET release is characteristic for several pathologies. Consequently, NETs are a novel target for developing therapeutic strategies. In this review, we summarize the roles of glycans in the biology of NETs; on the one hand, we focus on the glycan-dependent strategies of endogenous cells to control NET formation or to inactivate its cytotoxic effects, and, on the other hand, the “sweet” tricks of pathogens to inhibit the release of NETs or to prevent NET-mediated killing mechanisms are examined. Understanding both, the forces of good and evil, allows the development of novel glycan-based approaches to combat the harmful side of NETs during distinct pathologies.
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Affiliation(s)
- Kim F Bornhöfft
- Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
| | - Sebastian P Galuska
- Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
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179
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Kotlan B, Horvath S, Eles K, Plotar VK, Naszados G, Czirbesz K, Blank M, Farkas E, Toth L, Tovari J, Szekacs A, Shoenfeld Y, Godeny M, Kasler M, Liszkay G. Tumor-Associated Disialylated Glycosphingolipid Antigen-Revealing Antibodies Found in Melanoma Patients' Immunoglobulin Repertoire Suggest a Two-Direction Regulation Mechanism Between Immune B Cells and the Tumor. Front Immunol 2019; 10:650. [PMID: 31024530 PMCID: PMC6459966 DOI: 10.3389/fimmu.2019.00650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/11/2019] [Indexed: 12/24/2022] Open
Abstract
There is far less information available about the tumor infiltrating B (TIL-B) cells, than about the tumor infiltrating T cells. We focused on discovering the features and potential role of B lymphocytes in solid tumors. Our project aimed to develop innovative strategies to define cancer membrane structures. We chose two solid tumor types, with variable to considerable B cell infiltration. The strategy we set up with invasive breast carcinoma, showing medullary features, has been introduced and standardized in metastatic melanoma. After detecting B lymphocytes by immunohistochemistry, VH-JH, Vκ-Jκ immunoglobulin rearranged V region genes were amplified by RT-PCR, from TIL-B cDNA. Immunoglobulin variable-region genes of interest were cloned, sequenced, and subjected to a comparative DNA analysis. Single-chain variable (scFv) antibody construction was performed in selected cases to generate a scFv library and to test tumor binding capacity. DNA sequence analysis revealed an overrepresented VH3-1 cluster, represented both in the breast cancer and the melanoma TIL-B immunoglobulin repertoire. We observed that our previously defined anti GD3 ganglioside-binder antibody-variable region genes were present in melanoma as well. Our antibody fragments showed binding potential to disialylated glycosphingolipids (GD3 ganglioside) and their O acetylated forms on melanoma cancer cells. We conclude that our results have a considerable tumor immunological impact, as they reveal the power of TIL-B cells to recognize strong tumor-associated glycosphingolipid structures on melanomas and other solid tumors. As tumor-derived gangliosides affect immune cell functions and reduce the B lymphocytes' antibody production, we suspect an important B lymphocyte and cancer cell crosstalk mechanism. We not only described the isolation and specificity testing of the tumor infiltrating B cells, but also showed the TIL-B cells' highly tumor-associated GD3 ganglioside-revealing potential in melanomas. The present data help to identify new cancer-associated biomarkers that may serve for novel cancer diagnostics. The two-direction regulation mechanism between immune B cells and the tumor could eventually be developed into an innovative cancer treatment strategy.
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Affiliation(s)
- Beatrix Kotlan
- Molecular Immunology and Toxicology, National Institute of Oncology, Budapest, Hungary
| | - Szabolcs Horvath
- Center of Surgical and Molecular Pathology, National Institute of Oncology, Budapest, Hungary
| | - Klara Eles
- Center of Surgical and Molecular Pathology, National Institute of Oncology, Budapest, Hungary
| | - Vanda K Plotar
- Center of Surgical and Molecular Pathology, National Institute of Oncology, Budapest, Hungary
| | - Gyorgy Naszados
- Center of Image Analysis and Radiological Diagnostics, National Institute of Oncology, Budapest, Hungary
| | - Katalin Czirbesz
- Department of Oncodermatology, National Institute of Oncology, Budapest, Hungary
| | - Miri Blank
- Zabludowitz Center for Autoimmune Diseases, Sheba Medical Center Affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Emil Farkas
- Center of Oncosurgery, National Institute of Oncology, Budapest, Hungary
| | - Laszlo Toth
- Center of Oncosurgery, National Institute of Oncology, Budapest, Hungary
| | - Jozsef Tovari
- Department of Experimental Pharmacology, National Institute of Oncology, Budapest, Hungary
| | - Andras Szekacs
- Agro-Environmental Research Institute, National Agricultural Research and Innovation Centre, Budapest, Hungary
| | - Yehuda Shoenfeld
- Zabludowitz Center for Autoimmune Diseases, Sheba Medical Center Affiliated to Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Maria Godeny
- Center of Image Analysis and Radiological Diagnostics, National Institute of Oncology, Budapest, Hungary
| | - Miklos Kasler
- National Institute of Oncology, Budapest, Hungary.,Ministry of Human Capacities, Budapest, Hungary
| | - Gabriella Liszkay
- Department of Oncodermatology, National Institute of Oncology, Budapest, Hungary
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180
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Mahmoud ME, Rehan IF, El-Dawy Ahmed K, Abdelrahman A, Mohammadi S, Abou-Elnaga AF, Youssef M, Diab HM, Salman D, Elnagar A, Mohammed HH, Shanab O, Ibrahim RM, Ahmed EKH, Hesham AEL, Gupta A. Identification of serum N-glycoproteins as a biological correlate underlying chronic stress response in mice. Mol Biol Rep 2019; 46:2733-2748. [PMID: 30915686 DOI: 10.1007/s11033-019-04717-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 02/23/2019] [Indexed: 12/11/2022]
Abstract
Glycosylation is a post-translational protein modification in eukaryotes and plays an important role in controlling several diseases. N-glycan structure is emerging as a new paradigm for biomarker discovery of neuropsychiatric disorders. However, the relationship between N-glycosylation pattern and depression is not well elucidated to date. This study aimed to explore whether serum N-glycan structures are altered in depressive-like behavior using a stress based mouse model. We used two groups of BALB/c mice; (i) treated group exposed to chronic unpredictable mild stress (CUMS) as a model of depression, and (ii) control group. Behavioral tests in mice (e.g., sucrose preference test, forced swimming test, and fear conditioning test) were used to evaluate the threshold level to which mice displayed a depressive-like phenotype. Serum N-glycans were analyzed carefully using glycoblotting followed by Matrix-assisted laser desorption ionization-time of flight/mass spectrometry (MALDI-TOF/MS) to exhibit N-glycan expression levels and to illustrate the changes in the N-glycome profile. N-glycan expression levels were commonly altered in the depressive-like model and correlated well with the behavioral data. Our results indicated that sialylated N-glycan was identified as a biomarker associated with depressive symptoms, which may have utility as a candidate biomarker for the clinical diagnosis and monitoring of depression.
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Affiliation(s)
- Motamed Elsayed Mahmoud
- Department of Animal Behavior and Husbandry, Faculty of Veterinary Medicine, Sohag University, Sohag, 82524, Egypt.
| | - Ibrahim F Rehan
- Department of Animal Behavior and Husbandry, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| | - Kh El-Dawy Ahmed
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, El-Zeraa Street, 114, Zagazig, 44511, Egypt
| | - Amany Abdelrahman
- Department of Physiology, Faculty of Medicine, Sohag University, Sohag, 82524, Egypt
| | - Saeed Mohammadi
- Department of Tissue Engineering and Applied Cell Sciences, University of Medical Sciences, Tehran, 1985711151, Iran.,Biointerfaces Institute, McMaster University, 1280 Main St W, Hamilton, ON, L8S 0A3, Canada
| | - Ahmed F Abou-Elnaga
- Department of Husbandry and Development of Animal Wealth, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Mohammed Youssef
- Department of Animal Physiology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Hassan Mahmoud Diab
- Department of Animal Hygiene, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Doaa Salman
- Department of Animal Medicine, Faculty of Veterinary Medicine, Sohag University, Sohag, 82524, Egypt
| | - Asmaa Elnagar
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, El-Zeraa Street, 114, Zagazig, 44511, Egypt
| | - Hesham H Mohammed
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Zagazig University, El-Zeraa Street, 114, Zagazig, 44511, Egypt
| | - Obeid Shanab
- Department of Biochemistry, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Rawia M Ibrahim
- Clinical Laboratory Diagnosis, Department of Animal Medicine, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Eslam K H Ahmed
- Department of Animal Behavior and Husbandry, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Abd El-Latif Hesham
- Genetics Department, Faculty of Agriculture, Assiut University, Assiut, 71516, Egypt.
| | - Arti Gupta
- Department of Zoology, Sri Avadh Raj Singh Smarak Degree College, Gonda, India
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181
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Johnson A, Baeten J, Patel K, Killian M, Sunny S, Suresh A, Uma K, Birur P, Kuriakose M, Kademani D. Evaluation of a Lectin-Based Imaging System for the Chairside Detection of Oral Dysplasia and Malignancy. J Oral Maxillofac Surg 2019; 77:1941-1951. [PMID: 31004587 DOI: 10.1016/j.joms.2019.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 02/04/2023]
Abstract
PURPOSE Currently available oral cancer screening adjuncts have not enhanced clinical screening methods because of high false positives and negatives, highlighting the need for a molecularly specific technique for accurate screening of suspicious oral lesions. The purpose of this study was to evaluate the in vivo screening accuracy of an oral lesion identification system that evaluates aberrant glycosylation patterns using a fluorescently labeled lectin (wheat germ agglutinin and fluorescein isothiocyanate [WGA-FITC]). MATERIALS AND METHODS The authors designed and implemented a prospective cohort study at 3 institutions composed of patients with and without suspicious oral lesions. Oral cavities were screened by clinical examination and with the oral lesion identification system according to a stepwise procedure that included the topical application and fluorescence visualization of a fluorescent nuclear stain and WGA-FITC. Tissue samples were obtained from all enrolled patients for histopathological diagnosis and were used to calculate sensitivity and specificity metrics (primary outcome variable) irrespective of the oral lesion identification system result. RESULTS The sample was composed of 97 patients; 86 had 100 clinically suspicious lesions and 11 without such lesions were included as a control group. Use of the oral lesion identification system resulted in 100, 100, and 74% sensitivity for cancer, high-grade dysplasia, and low-grade dysplasia, respectively, and a specificity of 80%. Clinical diagnosis yielded similar sensitivity values of 84, 100, and 88% for cancer, high-grade dysplasia, and low-grade dysplasia, respectively, and a specificity of 76%. Use of the oral lesion identification system enhanced the visualization of lesion dimensionality and borders. CONCLUSIONS The results of this study suggest the oral lesion identification system was a beneficial adjunct to standard clinical examination, because the system provided sensitivity and specificity values similar to or greater than clinical diagnosis.
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Affiliation(s)
| | - John Baeten
- Director of Engineering/Research and Development, Inter-Med, Inc, Racine, WI
| | - Ketan Patel
- Attending Surgeon, North Memorial Health Care, Robbinsdale, MN
| | - Molly Killian
- Clinical Research Coordinator, North Memorial Health Care, Robbinsdale, MN
| | - Sumsum Sunny
- Fellow, Mazumdar Shaw Cancer Center, Bangalore, India
| | - Amritha Suresh
- Research Scientist, Mazumdar Shaw Cancer Center, Bangalore, India
| | - K Uma
- Oral Pathologist, KLES Dental College, Bangalore, India
| | - Praveen Birur
- Professor and Department Head, Oral Medicine and Radiology, KLES Dental College, Bangalore, India
| | - Moni Kuriakose
- Professor and Director, Department of Surgical Oncology, Narayana Hrudayalaya Hospital, Bangalore, India; Professor of Oncology and Director of Head and Neck Oncology Research Program, Roswell Park Cancer Institute, Buffalo, NY
| | - Deepak Kademani
- Chief of Surgery, Chief and Fellowship Director, Oral and Maxillofacial Surgery, North Memorial Medical Center, Robbinsdale, MN.
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182
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Lee J, Lee J, Baek S, Koh JH, Kim JW, Kim SY, Chung SH, Choi SS, Cho ML, Kwok SK, Ju JH, Park SH. Soluble siglec-5 is a novel salivary biomarker for primary Sjogren's syndrome. J Autoimmun 2019; 100:114-119. [PMID: 30922727 DOI: 10.1016/j.jaut.2019.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/08/2019] [Accepted: 03/11/2019] [Indexed: 12/22/2022]
Abstract
Despite advances in the understanding of the pathogenesis, disease-specific biomarkers have not been included in the classification criteria for Primary Sjogren's syndrome (pSS). Based on a microarray of peripheral blood mononuclear cells (PBMCs) from patients with primary Sjogren's syndrome (pSS), we aimed to investigate whether soluble sialic acid-binding immunoglobulin-like lectin (siglec)-5 in saliva might be a biomarker for pSS. The concentration of siglec-5 in saliva and sera was determined by ELISA. Clinical parameters related with pSS were obtained from pSS registry and correlation with salivary siglec-5 level was evaluated. Receiver operating curve (ROC) analysis was performed to determine cut off value. A separate validation cohort consisted of subjects with suspicious pSS was evaluated to determine the performance. The level of salivary siglec-5 was significantly higher in pSS patients (n = 170) compared with HCs (n = 25), non SS sicca patients (n = 78) or patients with systemic lupus erythematosus (SLE) (n = 43) (1346.8 [202.8-4280.0] pg/mL, 6.08 [0-134.0] pg/mL, 195 [0-947.5] pg/mL, and 0 [0-238.7] pg/mL, median [interquartile range], P < 0.001). Salivary siglec-5 level negatively correlated with salivary flow rate (spearman's rho: -0.420, P < 0.001), and positively correlated with ocular surface score (rho: 0.331, P < 0.001) and serum immunoglobulin G level (rho = 0.202, P = 0.008). In ROC analysis, area under the curve was 0.774[0.724-0.826]. With a cut off value of 400 pg/mL, sensitivity and specificity was 0.69 and 0.70 respectively. In validation cohort (45 pSS patients and 45 non SS sicca patients), sensitivity and specificity of siglec-5 was 64.4% and 77.8%, respectively. In conclusion, the level of soluble siglec-5 is significantly higher in the saliva from pSS patients, which reflects the severity of hyposalivation and ocular surface damage. This novel salivary biomarker may provide benefits for pSS diagnosis.
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Affiliation(s)
- Jennifer Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jaeseon Lee
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, Republic of Korea
| | - SeungYe Baek
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Hee Koh
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji-Won Kim
- Division of Rheumatology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Yeon Kim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So-Hyang Chung
- Department of Ophthalmology and Visual Science, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sun Shim Choi
- Division of Biomedical Convergence, College of Biomedical Science and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Mi-La Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung-Ki Kwok
- Division of Rheumatology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ji Hyeon Ju
- Division of Rheumatology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung-Hwan Park
- Division of Rheumatology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, Republic of Korea.
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183
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Bacterial sialoglycosidases in Virulence and Pathogenesis. Pathogens 2019; 8:pathogens8010039. [PMID: 30909660 PMCID: PMC6471121 DOI: 10.3390/pathogens8010039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 12/12/2022] Open
Abstract
Human oral microbiome and dysbiotic infections have been recently evidently identified. One of the major reasons for such dysbiosis is impairment of the immune system. Periodontitis is a chronic inflammatory disease affecting the tissues that surround and support the teeth. In the United States., approximately 65 million people are affected by this condition. Its occurrence is also associated with many important systemic diseases such as cardiovascular disease, rheumatoid arthritis, and Alzheimer’s disease. Among the most important etiologies of periodontitis is Porphyromonas gingivalis, a keystone bacterial pathogen. Keystone pathogens can orchestrate inflammatory disease by remodeling a normally benign microbiota causing imbalance between normal and pathogenic microbiota (dysbiosis). The important characteristics of P. gingivalis causing dysbiosis are its virulence factors which cause effective subversion of host defenses to its advantage allowing other pathogens to grow. Some of the mechanisms involved in these processes are still not well-understood. However, various microbial strategies target host sialoglycoproteins for immune dysregulation. In addition, the enzymes that break down sialoglycoproteins and sialoglycans are the “sialoglycoproteases”, resulting in exposed terminal sialic acid. This process could lead to pathogen-toll like receptor (TLR) interactions mediated through sialic acid receptor ligand mechanisms. Assessing the function of P. gingivalis sialoglycoproteases, could pave the way to designing carbohydrate analogues and sialic acid mimetics to serve as drug targets.
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184
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Hayashi T, Kehr G, Bergander K, Gilmour R. Stereospecific α‐Sialylation by Site‐Selective Fluorination. Angew Chem Int Ed Engl 2019; 58:3814-3818. [DOI: 10.1002/anie.201812963] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/21/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Taiki Hayashi
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Klaus Bergander
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
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185
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Zhou X, Kinlough CL, Hughey RP, Jin M, Inoue H, Etling E, Modena BD, Kaminski N, Bleecker ER, Meyers DA, Jarjour NN, Trudeau JB, Holguin F, Ray A, Wenzel SE. Sialylation of MUC4β N-glycans by ST6GAL1 orchestrates human airway epithelial cell differentiation associated with type-2 inflammation. JCI Insight 2019; 4:122475. [PMID: 30730306 DOI: 10.1172/jci.insight.122475] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 01/29/2019] [Indexed: 12/28/2022] Open
Abstract
Although type-2-induced (T2-induced) epithelial dysfunction is likely to profoundly alter epithelial differentiation and repair in asthma, the mechanisms for these effects are poorly understood. A role for specific mucins, heavily N-glycosylated epithelial glycoproteins, in orchestrating epithelial cell fate in response to T2 stimuli has not previously been investigated. Levels of a sialylated MUC4β isoform were found to be increased in airway specimens from asthmatic patients in association with T2 inflammation. We hypothesized that IL-13 would increase sialylation of MUC4β, thereby altering its function and that the β-galactoside α-2,6-sialyltransferase 1 (ST6GAL1) would regulate the sialylation. Using human biologic specimens and cultured primary human airway epithelial cells (HAECs),we demonstrated that IL-13 increases ST6GAL1-mediated sialylation of MUC4β and that both were increased in asthma, particularly in sputum supernatant and/or fresh isolated HAECs with elevated T2 biomarkers. ST6GAL1-induced sialylation of MUC4β altered its lectin binding and secretion. Both ST6GAL1 and MUC4β inhibited epithelial cell proliferation while promoting goblet cell differentiation. These in vivo and in vitro data provide strong evidence for a critical role for ST6GAL1-induced sialylation of MUC4β in epithelial dysfunction associated with T2-high asthma, thereby identifying specific sialylation pathways as potential targets in asthma.
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Affiliation(s)
- Xiuxia Zhou
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Department of Environmental & Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
| | - Carol L Kinlough
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Rebecca P Hughey
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mingzhu Jin
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Hideki Inoue
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Division of Pulmonary and Allergy Medicine, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Emily Etling
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Brian D Modena
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Deborah A Meyers
- Department of Medicine, University of Arizona, Tucson, Arizona, USA
| | - Nizar N Jarjour
- Division of Allergy, Pulmonary, and Critical Care Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - John B Trudeau
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Department of Environmental & Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
| | - Fernando Holguin
- Division of Pulmonary and Critical Care Medicine, University of Colorado Health Sciences Center, Denver, Colorado, USA
| | - Anuradha Ray
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Sally E Wenzel
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh Asthma Institute at University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Department of Environmental & Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
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186
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The serum SA levels are significantly increased in sepsis but decreased in cirrhosis. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:335-348. [PMID: 30905461 DOI: 10.1016/bs.pmbts.2019.01.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most of proteins in human blood circulation are glycoproteins with one or more covalently linked N- or O-linked glycans. Sialic acid (SA) generally occurs as the terminal monosaccharide on the glycans. SA in glycoproteins modulates a wide range of physiological and pathological processes and has been routinely measured in hospital since 1950s. Increased serum SA levels have been associated with different types of cancers. However, a systematic comparison of the serum SA levels in different types of human diseases has not been reported. In current study, 160,537 clinical lab test results of serum SA levels from healthy individuals and patients with 64 different types of diseases during the past 5 years in our hospital were retrieved and analyzed. Based on the mean (SD), median, and p (-Log10p) values, we found that patients suffering 55 different types of cancer and noncancer diseases such as sepsis, pancreatitis, bone cancer, rheumatoid arthritis, pancreatic cancer, and encephalitis had significantly (p<0.05, -Log10p>1.30) increased median serum SA levels whereas patients suffering hepatic encephalopathy, cirrhosis, renal cyst, and hepatitis had significantly decreased median serum SA levels compared to that of healthy controls. Moreover, the greatest increase in the mean (SD) and -Log10p values was observed in sepsis and pancreatitis, respectively, but not in cancers. Thus, the regulations of serum SA levels were much more complicated than previously assumed. Understanding the molecular mechanisms behind these observations would make serum SA a useful biomarker to facilitate personalized diagnosis and treatment for patients with different diseases.
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187
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Mahajan VS, Alsufyani F, Mattoo H, Rosenberg I, Pillai S. Alterations in sialic-acid O-acetylation glycoforms during murine erythrocyte development. Glycobiology 2019; 29:222-228. [PMID: 30597004 PMCID: PMC6381321 DOI: 10.1093/glycob/cwy110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/12/2018] [Accepted: 12/28/2018] [Indexed: 11/16/2022] Open
Abstract
We used Casd1-deficient mice to confirm that this enzyme is responsible for 9-O-acetylation of sialic acids in vivo. We observed a complete loss of 9-O-acetylation of sialic acid on the surface of myeloid, erythroid and CD4+ T cells in Casd1-deficient mice. Although 9-O-acetylation of sialic acids on multiple hematopoietic lineages was lost, there were no obvious defects in hematopoiesis. Interestingly, erythrocytes from Casd1-deficient mice also lost reactivity to TER-119, a rat monoclonal antibody that is widely used to mark the murine erythroid lineage. The sialic acid glyco-epitope recognized by TER-119 on erythrocytes was sensitive to the sialic acid O-acetyl esterase activity of the hemagglutinin-esterase from bovine coronavirus but not to the corresponding enzyme from the influenza C virus. During erythrocyte development, TER-119+ Ery-A and Ery-B cells could be stained by catalytically inactive bovine coronavirus hemagglutinin-esterase but not by the inactive influenza C hemagglutinin-esterase, while TER-119+ Ery-C cells and mature erythrocytes were recognized by both virolectins. Although the structure of the sialoglycoconjugate recognized by TER-119 was not chemically demonstrated, its selective binding to virolectins suggests that it may be comprised of a 7,9-di-O-acetyl form of sialic acid. As erythrocytes mature, the surfaces of Ery-C cells and mature erythrocytes also acquire an additional distinct CASD1-dependent 9-O-acetyl sialic acid moiety that can be recognized by virolectins from both influenza C and bovine coronavirus.
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Affiliation(s)
- Vinay S Mahajan
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Brigham and Women’s Hospital, Department of Pathology, Boston, MA, USA
| | | | - Hamid Mattoo
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Ian Rosenberg
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Shiv Pillai
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
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188
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Hayashi T, Kehr G, Bergander K, Gilmour R. Stereospecific α‐Sialylation by Site‐Selective Fluorination. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Taiki Hayashi
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Klaus Bergander
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
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189
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Sialylated Oligosaccharides and Glycoconjugates of Human Milk. The Impact on Infant and Newborn Protection, Development and Well-Being. Nutrients 2019; 11:nu11020306. [PMID: 30717166 PMCID: PMC6413137 DOI: 10.3390/nu11020306] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/25/2019] [Accepted: 01/29/2019] [Indexed: 01/19/2023] Open
Abstract
Human milk not only has nutritional value, but also provides a wide range of biologically active molecules, which are adapted to meet the needs of newborns and infants. Mother’s milk is a source of sialylated oligosaccharides and glycans that are attached to proteins and lipids, whose concentrations and composition are unique. Sialylated human milk glycoconjugates and oligosaccharides enrich the newborn immature immune system and are crucial for their proper development and well-being. Some of the milk sialylated oligosaccharide structures can locally exert biologically active effects in the newborn’s and infant’s gut. Sialylated molecules of human milk can be recognized and bound by sialic acid-dependent pathogens and inhibit their adhesion to the epithelial cells of newborns and infants. A small amount of intact sialylated oligosaccharides can be absorbed from the intestine and remain in the newborn’s circulation in concentrations high enough to modulate the immunological system at the cellular level and facilitate proper brain development during infancy. Conclusion: The review summarizes the current state of knowledge on sialylated human milk oligosaccharides and glycoconjugates, discusses the significance of sialylated structures of human milk in newborn protection and development, and presents the advantages of human milk over infant formula.
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190
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Novel Zebrafish Mono-α2,8-sialyltransferase (ST8Sia VIII): An Evolutionary Perspective of α2,8-Sialylation. Int J Mol Sci 2019; 20:ijms20030622. [PMID: 30709055 PMCID: PMC6387029 DOI: 10.3390/ijms20030622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 12/28/2022] Open
Abstract
The mammalian mono-α2,8-sialyltransferase ST8Sia VI has been shown to catalyze the transfer of a unique sialic acid residues onto core 1 O-glycans leading to the formation of di-sialylated O-glycosylproteins and to a lesser extent to diSia motifs onto glycolipids like GD1a. Previous studies also reported the identification of an orthologue of the ST8SIA6 gene in the zebrafish genome. Trying to get insights into the biosynthesis and function of the oligo-sialylated glycoproteins during zebrafish development, we cloned and studied this fish α2,8-sialyltransferase homologue. In situ hybridization experiments demonstrate that expression of this gene is always detectable during zebrafish development both in the central nervous system and in non-neuronal tissues. Intriguingly, using biochemical approaches and the newly developed in vitro MicroPlate Sialyltransferase Assay (MPSA), we found that the zebrafish recombinant enzyme does not synthetize diSia motifs on glycoproteins or glycolipids as the human homologue does. Using comparative genomics and molecular phylogeny approaches, we show in this work that the human ST8Sia VI orthologue has disappeared in the ray-finned fish and that the homologue described in fish correspond to a new subfamily of α2,8-sialyltransferase named ST8Sia VIII that was not maintained in Chondrichtyes and Sarcopterygii.
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191
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One-step fabrication of boronic-acid-functionalized carbon dots for the detection of sialic acid. Talanta 2019; 197:548-552. [PMID: 30771974 DOI: 10.1016/j.talanta.2019.01.074] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/17/2019] [Accepted: 01/24/2019] [Indexed: 01/29/2023]
Abstract
Typically, sialic acids (SA) with a nine-carbon backbone are found at the glycan chain termini on the cell membranes, which play crucial roles in various physiological and pathological processes. The expression level of SA in the blood serum has been reported to correlate with various disease states among cancer. In this study, a novel approach for preparing fluorescent boronic-acid-modified carbon dots (C-dots) for the detection of SA was developed. The functionalized C-dots were synthesized by a facile, one-step hydrothermal method using 3-pyridineboronic acid as the sole carbon source. The added SA selectively recognized the C-dots, leading to the fluorescence quenching of the C-dots in a linear range of 80-4000 μM with a detection limit of 54 μM. The as-developed boronic-acid nanoprobe was successfully applied for the detection of SA in human serum samples with satisfactory results. In addition, this method afforded results within 4 min. Compared to other methods, this new proposed approach was simpler and exhibited excellent sensitivity and selectivity, demonstrating immense potential as an alternative for SA detection.
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192
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Liang X, Ye X, Wang C, Xing C, Miao Q, Xie Z, Chen X, Zhang X, Zhang H, Mei L. Photothermal cancer immunotherapy by erythrocyte membrane-coated black phosphorus formulation. J Control Release 2019; 296:150-161. [PMID: 30682441 DOI: 10.1016/j.jconrel.2019.01.027] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/16/2019] [Accepted: 01/21/2019] [Indexed: 01/05/2023]
Abstract
Basal-like breast cancer exhibits a triple-negative phenotype and has a poor prognosis, even with traditional chemical and anti-human epidermal growth factor receptor (HER) treatments. However, the high mutation rate of this obstinate cancer type renders it suitable for immunotherapy. Photothermal therapy (PTT) is a high-efficiency method for inducing tumor neoantigen release in situ, which has great potential for use in cancer immunotherapy. Here, we prepared a biomimetic black phosphorus quantum dot (BPQDs) formulation to induce breast cancer cell apoptosis in situ by near-infrared (NIR) laser irradiation to mobilize the immune system to eliminate the residual and metastatic cancer cells. Erythrocyte membranes (RMs) were used to coat the BPQDs, forming a BPQD-RM nanovesicle (BPQD-RMNV) biomimetic formulation that exhibited a long circulation time and tumor accumulation in vivo. The basal-like 4T1 breast tumor underwent apoptosis and necrosis with the irradiation and recruited dendritic cells (DCs) to capture the tumor antigens in vivo. Furthermore, programmed cell death protein 1 (PD-1) antibody (aPD-1) was employed to prevent the CD8+ T cells from exhaustion. Notably, BPQD-RMNV-mediated PTT combined with aPD-1 treatment significantly delayed residual and metastatic tumor growth in vivo. Hence, BPQD-RMNV-mediated PTT combined with immune checkpoint blockade antibody increased the infiltration and activity of CD8+ T cells in the tumor, which directly restrained basal-like breast tumor growth in vivo.
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Affiliation(s)
- Xin Liang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou 510275, PR China; Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xinyu Ye
- School of Life Sciences, Tsinghua University, Beijing 100084, PR China
| | - Chao Wang
- Department of Bioengineering, California NanoSystems Institute, Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, California 90095, USA
| | - Chenyang Xing
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Qianwei Miao
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Zhongjian Xie
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xiuli Chen
- School of Life Sciences, Tsinghua University, Beijing 100084, PR China
| | - Xudong Zhang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou 510275, PR China; School of Medicine (ShenZhen), Sun Yat-sen University, Guangzhou 510080, China; Department of Bioengineering, California NanoSystems Institute, Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, California 90095, USA.
| | - Han Zhang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Lin Mei
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou 510275, PR China.
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193
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Wei M, Wang PG. Desialylation in physiological and pathological processes: New target for diagnostic and therapeutic development. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:25-57. [PMID: 30905454 DOI: 10.1016/bs.pmbts.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Desialylation is a pivotal part of sialic acid metabolism, which initiates the catabolism of glycans by removing the terminal sialic acid residues on glycans, thereby modulating the structure and functions of glycans, glycoproteins, or glycolipids. The functions of sialic acids have been well recognized, whereas the function of desialylation process is underappreciated or largely ignored. However, accumulating evidence demonstrates that desialylation plays an important role in a variety of physiological and pathological processes. This chapter summarizes the current knowledge pertaining to desialylation in a variety of physiological and pathological processes, with a focus on the underlying molecular mechanisms. The potential of targeting desialylation process for diagnostic and therapeutic development is also discussed.
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Affiliation(s)
- Mohui Wei
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
| | - Peng George Wang
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, United States
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194
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Sukhorukov V, Gudelj I, Pučić-Baković M, Zakiev E, Orekhov A, Kontush A, Lauc G. Glycosylation of human plasma lipoproteins reveals a high level of diversity, which directly impacts their functional properties. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:643-653. [PMID: 30641224 DOI: 10.1016/j.bbalip.2019.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 12/18/2018] [Accepted: 01/06/2019] [Indexed: 01/25/2023]
Abstract
AIMS Human plasma lipoproteins are known to contain various glycan structures whose composition and functional importance are starting to be recognized. We assessed N-glycosylation of human plasma HDL and LDL and the role of their glycomes in cellular cholesterol metabolism. METHODS N-glycomic profiles of native and neuraminidase-treated HDL and LDL were obtained using HILIC-UHPLC-FLD. Relative abundance of the individual chromatographic peaks was quantitatively expressed as a percentage of total integrated area and N-glycan structures present in each peak were elucidated by MALDI-TOF MS. The capacity of HDL to mediate cellular efflux of cholesterol and the capacity of LDL to induce cellular accumulation of cholesteryl esters were evaluated in THP-1 cells. RESULTS HILIC-UHPLC-FLD analysis of HDL and LDL N-glycans released by PNGase F resulted in 22 and 18 distinct chromatographic peaks, respectively. The majority of N-glycans present in HDL (~70%) and LDL (~60%) were sialylated with one or two sialic acid residues. The most abundant N-glycan structure in both HDL and LDL was a complex type biantennary N-glycan with one sialic acid (A2G2S1). Relative abundances of several N-glycan structures were dramatically altered by the neuraminidase treatment, which selectively removed sialic acid residues. Native HDL displayed significantly greater efficacy in removing cellular cholesterol from THP-1 cells as compared to desialylated HDL (p < 0.05). Cellular accumulation of cholesteryl esters in THP-1 cells was significantly higher after incubations with desialylated LDL particles as compared to native LDL (p < 0.05). CONCLUSIONS N-glycome of human plasma lipoproteins reveals a high level of diversity, which directly impacts functional properties of the lipoproteins.
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Affiliation(s)
- Vasily Sukhorukov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; National Institute for Health and Medical Research (INSERM), UMR 1166 ICAN, Paris F-75013, France; Sorbonne University, Paris F-75013, France; AP-HP, Groupe hospitalier Pitié-Salpétrière, Paris F-75013, France; Federal State Budget Institution of Sciences Institute of Gene Biology, Russian Academy of Sciences, Vavilova Str., 34/5, Moscow 119334, Russia
| | - Ivan Gudelj
- Genos Glycoscience Research Laboratory, Borongajska cesta 83H, HR-10 000 Zagreb, Croatia
| | - Maja Pučić-Baković
- Genos Glycoscience Research Laboratory, Borongajska cesta 83H, HR-10 000 Zagreb, Croatia
| | - Emile Zakiev
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; National Institute for Health and Medical Research (INSERM), UMR 1166 ICAN, Paris F-75013, France; Sorbonne University, Paris F-75013, France; AP-HP, Groupe hospitalier Pitié-Salpétrière, Paris F-75013, France; Federal State Budget Institution of Sciences Institute of Gene Biology, Russian Academy of Sciences, Vavilova Str., 34/5, Moscow 119334, Russia
| | - Alexander Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russia; Institute for Atherosclerosis Research, Skolkovo Innovative Center, 121609 Moscow, Russia
| | - Anatol Kontush
- National Institute for Health and Medical Research (INSERM), UMR 1166 ICAN, Paris F-75013, France; Sorbonne University, Paris F-75013, France; AP-HP, Groupe hospitalier Pitié-Salpétrière, Paris F-75013, France.
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Borongajska cesta 83H, HR-10 000 Zagreb, Croatia
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195
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Wang J, Lou Q, Rong J, Yang Y. Gold(i)-promoted α-selective sialylation of glycosylortho-hexynylbenzoates for the latent-active synthesis of oligosialic acids. Org Biomol Chem 2019; 17:6580-6584. [DOI: 10.1039/c9ob00954j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A gold(i)-promoted α-selective glycosylation approach with sialylortho-hexynylbenzoates as donors is developed for the latent-active synthesis of α-(2 → 9)-linked oligosialic acids.
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Affiliation(s)
- Jiazhe Wang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Qixin Lou
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jingjing Rong
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - You Yang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
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Milcheva R, Janega P, Celec P, Petkova S, Hurniková Z, Izrael-Vlková B, Todorova K, Babál P. Accumulation of α-2,6-sialyoglycoproteins in the Muscle Sarcoplasm Due to Trichinella Sp. Invasion. Open Life Sci 2019; 14:470-481. [PMID: 33817183 PMCID: PMC7874827 DOI: 10.1515/biol-2019-0053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/30/2019] [Indexed: 01/02/2023] Open
Abstract
The sialylation of the glycoproteins in skeletal muscle tissue is not well investigated, even though the essential role of the sialic acids for the proper muscular function has been proven by many researchers. The invasion of the parasitic nematode Trichinella spiralis in the muscles with subsequent formation of Nurse cell-parasite complex initiates increased accumulation of sialylated glycoproteins within the affected area of the muscle fiber. The aim of this study is to describe some details of the α-2,6-sialylation in invaded muscle cells. Asynchronous invasion with infectious T. spiralis larvae was experimentally induced in mice. The areas of the occupied sarcoplasm were reactive towards α-2,6-sialic acid specific Sambucus nigra agglutinin during the whole process of transformation to a Nurse cell.The cytoplasm of the developing Nurse cell reacted with Helix pomatia agglutinin, Arachis hypogea agglutinin and Vicia villosa lectin-B4 after neuraminidase pretreatment.Up-regulation of the enzyme ST6GalNAc1 and down-regulation of the enzyme ST6GalNAc3 were detected throughout the course of this study. The results from our study assumed accumulation of sialyl-Tn-Ag, 6`-sialyl lactosamine, SiA-α-2,6-Gal-β-1,3-GalNAc-α-Ser/Thr and Gal-β-1,3-GalNAc(SiA-α-2,6-)-α-1-Ser/Thr oligosaccharide structures into the occupied sarcoplasm. Further investigations in this domain will develop the understanding about the amazing adaptive capabilities of skeletal muscle tissue.
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Affiliation(s)
- Rositsa Milcheva
- Department of Pathology, IEMPAM, Bulgarian Academy of Sciences, ‘’Acad. G. Bonchev’’ Str. 25, 1113, Sofia, Bulgaria
- Institute of Experimental Morphology, Pathology and Anthropology with Museum (IEMPAM), Bulgarian Academy of Sciences, “Acad. G. Bonchev” Str. 25, 1113Sofia, Bulgaria
| | - Pavol Janega
- Department of Pathology, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 81372Bratislava, Slovakia
| | - Peter Celec
- Department of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 81372Bratislava, Slovakia
| | - Svetlozara Petkova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum (IEMPAM), Bulgarian Academy of Sciences, “Acad. G. Bonchev” Str. 25, 1113Sofia, Bulgaria
| | - Zuzana Hurniková
- Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01Košice, Slovak Republic
| | - Barbora Izrael-Vlková
- Department of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 81372Bratislava, Slovakia
| | - Katerina Todorova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum (IEMPAM), Bulgarian Academy of Sciences, “Acad. G. Bonchev” Str. 25, 1113Sofia, Bulgaria
| | - Pavel Babál
- Department of Pathology, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 81372Bratislava, Slovakia
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Galili U. Evolution in primates by “Catastrophic‐selection” interplay between enveloped virus epidemics, mutated genes of enzymes synthesizing carbohydrate antigens, and natural anti‐carbohydrate antibodies. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2018; 168:352-363. [DOI: 10.1002/ajpa.23745] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/09/2018] [Accepted: 10/16/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Uri Galili
- Department of MedicineRush Medical College Chicago Illinois
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198
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Sialic acid as a target for the development of novel antiangiogenic strategies. Future Med Chem 2018; 10:2835-2854. [PMID: 30539670 DOI: 10.4155/fmc-2018-0298] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Sialic acid is associated with glycoproteins and gangliosides of eukaryotic cells. It regulates various molecular interactions, being implicated in inflammation and cancer, where its expression is regulated by sialyltransferases and sialidases. Angiogenesis, the formation of new capillaries, takes place during inflammation and cancer, and represents the outcome of several interactions occurring at the endothelial surface among angiogenic growth factors, inhibitors, receptors, gangliosides and cell-adhesion molecules. Here, we elaborate on the evidences that many structures involved in angiogenesis are sialylated and that their interactions depend on sialic acid with implications in angiogenesis itself, inflammation and cancer. We also discuss the possibility to exploit sialic acid as a target for the development of novel antiangiogenic drugs.
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199
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Strubl S, Schubert U, Kühnle A, Rebl A, Ahmadvand N, Fischer S, Preissner KT, Galuska SP. Polysialic acid is released by human umbilical vein endothelial cells (HUVEC) in vitro. Cell Biosci 2018; 8:64. [PMID: 30555678 PMCID: PMC6288938 DOI: 10.1186/s13578-018-0262-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 12/04/2018] [Indexed: 12/27/2022] Open
Abstract
Background Sialic acids represent common terminal residues on numerous mammalian glycoconjugates, thereby influencing e.g. lumen formation in developing blood vessels. Interestingly, besides monosialylated also polysialylated glycoconjugates are produced by endothelial cells. Polysialic acid (polySia) is formed in several organs during embryonal and postnatal development influencing, for instance, cell migration processes. Furthermore, the function of cytokines like basic fibroblast growth factor (bFGF) is modulated by polySia. Results In this study, we demonstrated that human umbilical vein endothelial cells (HUVEC) also secrete polysialylated glycoconjugates. Furthermore, an interaction between polySia and vascular endothelial growth factor (VEGF) was observed. VEGF modulates like bFGF the migration of HUVEC. Since both growth factors interact with polySia, we examined, if polySia modulates the migration of HUVEC. To this end scratch assays were performed showing that the migration of HUVEC is stimulated, when polySia was degraded. Conclusions Since polySia can interact with bFGF as well as VEGF and the degradation of polySia resulted in an increased cell migration capacity in the applied scratch assay, we propose that polySia may trap these growth factors influencing their biological activity. Thus, polySia might also contribute to the fine regulation of physiological processes in endothelial cells.
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Affiliation(s)
- Sebastian Strubl
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany.,2Department II of Internal Medicine, Center for Molecular Medicine Cologne, University Cologne, Kerpener Str. 62, 50931 Cologne, Germany
| | - Uwe Schubert
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany
| | - Andrea Kühnle
- 3Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Alexander Rebl
- 4Institute of Genome Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Negah Ahmadvand
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany.,Excellence Cluster Cardio Pulmonary System (ECCPS), Aulweg 130, 35392 Giessen, Germany
| | - Silvia Fischer
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany
| | - Klaus T Preissner
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany
| | - Sebastian P Galuska
- 1Institute of Biochemistry, Faculty of Medicine, Justus-Liebig-University, Friedrichstrasse 24, 35392 Giessen, Germany.,3Institute of Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
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Rovais MRA, Alirezapour B, Moassesi ME, Amiri M, Novin FB, Maadi E. Internalization capabilities of gold-198 nanoparticles: Comparative evaluation of effects of chitosan agent on cellular uptake into MCF-7. Appl Radiat Isot 2018; 142:85-91. [DOI: 10.1016/j.apradiso.2018.09.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 08/14/2018] [Accepted: 09/23/2018] [Indexed: 12/18/2022]
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