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Bell RJ, Hage DS, Dodds ED. Two-Dimensional Fourier Transform Ion Cyclotron Resonance Mass Spectrometry of N-Linked Glycopeptides. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1208-1216. [PMID: 38713472 DOI: 10.1021/jasms.4c00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Glycosylation is a common modification across living organisms and plays a central role in understanding biological systems and disease. Our ability to probe the gylcome has grown exponentially in the past several decades. However, further improvements to the analytical toolbox available to researchers would allow for increased capabilities to probe structure and function of biological systems and to improve disease treatment. This article applies the developing technique of two-dimensional Fourier transform ion cyclotron resonance mass spectrometry to a glycoproteomic workflow for the standard glycoproteins coral tree lectin (CTL) and bovine ribonuclease B (BRB) to demonstrate its feasibility as a tool for glycoproteomic workflows. 2D infrared multiphoton dissociation and electron capture dissociation spectra of CTL reveal comparable structural information to their 1D counterparts, confirming the site of glycosylation and monosaccharide composition of the glycan. Spectra collected in 2D of BRB reveal correlation lines of fragment ion scans and vertical precursor ion scans for data collected using infrared multiphoton dissociation and diagonal cleavage lines for data collected by electron capture dissociation. The use of similar techniques for glycoproteomic analysis may prove valuable in instances where chromatographic separation is undesirable or quadrupole isolation is insufficient.
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Affiliation(s)
- Richard J Bell
- Department of Chemistry and University of Nebraska─Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - David S Hage
- Department of Chemistry and University of Nebraska─Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Eric D Dodds
- Department of Chemistry and University of Nebraska─Lincoln, Lincoln, Nebraska 68588-0304, United States
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2
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Xu X, Yin K, Wu R. Systematic Investigation of the Trafficking of Glycoproteins on the Cell Surface. Mol Cell Proteomics 2024; 23:100761. [PMID: 38593903 PMCID: PMC11087972 DOI: 10.1016/j.mcpro.2024.100761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/30/2024] [Accepted: 04/03/2024] [Indexed: 04/11/2024] Open
Abstract
Glycoproteins located on the cell surface play a pivotal role in nearly every extracellular activity. N-glycosylation is one of the most common and important protein modifications in eukaryotic cells, and it often regulates protein folding and trafficking. Glycosylation of cell-surface proteins undergoes meticulous regulation by various enzymes in the endoplasmic reticulum (ER) and the Golgi, ensuring their proper folding and trafficking to the cell surface. However, the impacts of protein N-glycosylation, N-glycan maturity, and protein folding status on the trafficking of cell-surface glycoproteins remain to be explored. In this work, we comprehensively and site-specifically studied the trafficking of cell-surface glycoproteins in human cells. Integrating metabolic labeling, bioorthogonal chemistry, and multiplexed proteomics, we investigated 706 N-glycosylation sites on 396 cell-surface glycoproteins in monocytes, either by inhibiting protein N-glycosylation, disturbing N-glycan maturation, or perturbing protein folding in the ER. The current results reveal their distinct impacts on the trafficking of surface glycoproteins. The inhibition of protein N-glycosylation dramatically suppresses the trafficking of many cell-surface glycoproteins. The N-glycan immaturity has more substantial effects on proteins with high N-glycosylation site densities, while the perturbation of protein folding in the ER exerts a more pronounced impact on surface glycoproteins with larger sizes. Furthermore, for N-glycosylated proteins, their trafficking to the cell surface is related to the secondary structures and adjacent amino acid residues of glycosylation sites. Systematic analysis of surface glycoprotein trafficking advances our understanding of the mechanisms underlying protein secretion and surface presentation.
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Affiliation(s)
- Xing Xu
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Kejun Yin
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Ronghu Wu
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA.
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3
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Epifani F, Pujol Serra SM, Llorens M, Balcells S, Nolasco G, Bolasell M, Aguilera-Albesa S, Cancho Candela R, Cuevas Cervera JL, García Sánchez V, Garcia O, Miranda-Herrero MC, Moreno-Lozano PJ, Robles B, Roldán Aparicio S, Velázquez Fragua R, Serrano M. Untangling adaptive functioning of PMM2-CDG across age and its impact on parental stress: a cross-sectional study. Sci Rep 2023; 13:22783. [PMID: 38129426 PMCID: PMC10739927 DOI: 10.1038/s41598-023-49518-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
Phosphomannomutase deficiency (PMM2-CDG) leads to cerebellar atrophy with ataxia, dysmetria, and intellectual deficits. Despite advances in therapy, the cognitive and adaptive profile remains unknown. Our study explores the adaptive profile of 37 PMM2-CDG patients, examining its association with parental stress and medical characteristics. Assessment tools included ICARS for the cerebellar syndrome and NPCRS for global disease severity. Behavioral and adaptive evaluation consisted of the Vineland Adaptive Behavior Scale and the Health of the Nation Outcome Scales. Psychopathological screening involved the Child Behavior Checklist and the Symptom Check-List-90-R. Parental stress was evaluated using Parental Stress Index. Results were correlated with clinical features. No significant age or sex differences were found. 'Daily living skills' were notably affected. Patients severely affected exhibited lower adaptive skill values, as did those with lipodystrophy and inverted nipples. Greater severity in motor cerebellar syndrome, behavioral disturbances and the presence of comorbidities such as hyperactivity, autistic features and moderate-to-severe intellectual disability correlated with greater parental stress. Our study found no decline in adaptive abilities. We provide tools to assess adaptive deficits in PMM2-CDG patients, emphasizing the importance of addressing communication, daily living skills, and autonomy, and their impact on parental stress in clinical monitoring and future therapies.
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Affiliation(s)
- Florencia Epifani
- Neuropediatric Department, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Marta Llorens
- Pediatric Mental Health Department, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Sol Balcells
- Department of Statistics, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Gregorio Nolasco
- Neuropediatric Department, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Mercè Bolasell
- Department of Genetic and Molecular Medicine IPER, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Ramon Cancho Candela
- Servicio de Pediatría, Hospital Universitario Rio Hortega, Universidad de Valladolid, Valladolid, Spain
| | | | | | - Oscar Garcia
- Department of Pediatrics, Hospital Universitario Virgen de la Salud, Toledo, Spain
| | | | - Pedro J Moreno-Lozano
- Internal Medicine Department, Muscular and Inherited Metabolic Disorders Adults Unit, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Bernabé Robles
- Neurology Department, Hospital de Sant Boi, Parc Sanitari Sant Joan de Déu, Sant Boi, Spain
| | | | | | - Mercedes Serrano
- Neuropediatric Department, Hospital Sant Joan de Déu, Barcelona, Spain.
- U-703 Centre for Biomedical Research On Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Passeig Sant Joan de Déu, 2, Esplugues, 08950, Barcelona, Spain.
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4
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Ogundiran AI, Chang TL, Ivanov A, Kumari N, Nekhai S, Chandran PL. Shear-reversible clusters of HIV-1 in solution: stabilized by antibodies, dispersed by mucin. J Virol 2023; 97:e0075223. [PMID: 37712704 PMCID: PMC10617397 DOI: 10.1128/jvi.00752-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/03/2023] [Indexed: 09/16/2023] Open
Abstract
IMPORTANCE The phenomenon of reversible clustering is expected to further nuance HIV immune stealth because virus surfaces can escape interaction with antibodies (Abs) by hiding temporarily within clusters. It is well known that mucin reduces HIV virulence, and the current perspective is that mucin aggregates HIV-1 to reduce infections. Our findings, however, suggest that mucin is dispersing HIV clusters. The study proposes a new paradigm for how HIV-1 may broadly evade Ab recognition with reversible clustering and why mucin effectively neutralizes HIV-1.
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Affiliation(s)
- Ayobami I. Ogundiran
- Department of Chemical Engineering, College of Engineering and Architecture, Howard University, Washington, DC, USA
| | - Tzu-Lan Chang
- Department of Chemical Engineering, College of Engineering and Architecture, Howard University, Washington, DC, USA
| | - Andrey Ivanov
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, DC, USA
| | - Namita Kumari
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, DC, USA
- Department of Medicine, College of Medicine, Howard University, Washington, DC, USA
| | - Sergei Nekhai
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, DC, USA
- Department of Medicine, College of Medicine, Howard University, Washington, DC, USA
| | - Preethi L. Chandran
- Department of Chemical Engineering, College of Engineering and Architecture, Howard University, Washington, DC, USA
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5
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Liu H, Chen C, Liao S, Sohaii DK, Cruz CR, Burdo TH, Cradick TJ, Mehta A, Barrero C, Florez M, Gordon J, Grauzam S, Dressman J, Amini S, Bollard CM, Kaminski R, Khalili K. Strategic self-limiting production of infectious HIV particles by CRISPR in permissive cells. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 32:1010-1025. [PMID: 37346975 PMCID: PMC10280355 DOI: 10.1016/j.omtn.2023.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/28/2023] [Indexed: 06/23/2023]
Abstract
Post-translational glycosylation of the HIV-1 envelope protein involving precursor glycan trimming by mannosyl oligosaccharide glucosidase (MOGS) is critically important for morphogenesis of virions and viral entry. Strategic editing of the MOGS gene in T lymphocytes and myeloid origin cells harboring latent proviral DNA results in the production of non-infectious particles upon treatment of cells with latency reversal agents. Controlled activation of CRISPR-MOGS by rebound HIV-1 mitigates production of infectious particles that exhibit poor ability of the virus to penetrate uninfected cells. Moreover, exclusive activation of CRISPR in cells infected with HIV-1 alleviates concern for broad off-target impact of MOGS gene ablation in uninfected cells. Combination CRISPR treatment of peripheral blood lymphocytes prepared from blood of people with HIV-1 (PWH) tailored for editing the MOGS gene (CRISPR-MOGS) and proviral HIV-1 DNA (CRISPR-HIV) revealed a cooperative impact of CRISPR treatment in inhibiting the production of infectious HIV-1 particles. Our design for genetic inactivation of MOGS by CRISPR exhibits no detectable off-target effects on host cells or any deleterious impact on cell survival and proliferation. Our findings offer the development of a new combined gene editing-based cure strategy for the diminution of HIV-1 spread after cessation of antiretroviral therapy (ART) and its elimination.
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Affiliation(s)
- Hong Liu
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
| | - Chen Chen
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
| | - Shuren Liao
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
| | - Danielle K. Sohaii
- Center for Cancer and Immunology Research, Children’s National Health System, The George Washington University, 7144 13th Place NW, Washington, DC 20012, USA
| | - Conrad R.Y. Cruz
- Center for Cancer and Immunology Research, Children’s National Health System, The George Washington University, 7144 13th Place NW, Washington, DC 20012, USA
| | - Tricia H. Burdo
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
| | - Thomas J. Cradick
- Excision Biotherapeutics, Inc., 499 Jackson Street, San Francisco, CA 94111, USA
| | - Anand Mehta
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Basic Science Building, Room 310, 173 Ashley Avenue, Charleston, SC 29425, USA
| | - Carlos Barrero
- Department of Pharmaceutical Sciences, School of Pharmacy, Temple University, 3307 N. Broad Street, Philadelphia, PA 19140, USA
| | - Magda Florez
- Department of Pharmaceutical Sciences, School of Pharmacy, Temple University, 3307 N. Broad Street, Philadelphia, PA 19140, USA
| | - Jennifer Gordon
- Excision Biotherapeutics, Inc., 499 Jackson Street, San Francisco, CA 94111, USA
| | - Stephane Grauzam
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Basic Science Building, Room 310, 173 Ashley Avenue, Charleston, SC 29425, USA
| | - James Dressman
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Basic Science Building, Room 310, 173 Ashley Avenue, Charleston, SC 29425, USA
| | - Shohreh Amini
- Department of Biology, College of Science and Technology, Temple University, 1900 North 12th Street, Philadelphia, PA 19122, USA
| | - Catherine M. Bollard
- Center for Cancer and Immunology Research, Children’s National Health System, The George Washington University, 7144 13th Place NW, Washington, DC 20012, USA
| | - Rafal Kaminski
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
| | - Kamel Khalili
- Center for Neurovirology and Gene Editing, Department of Microbiology, Immunology, and Inflammation, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, 7th Floor, Philadelphia, PA 19140, USA
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Yoshimoto M, Sadamori K, Tokumura K, Tanaka Y, Fukasawa K, Hinoi E. Bioinformatic analysis reveals potential relationship between chondrocyte senescence and protein glycosylation in osteoarthritis pathogenesis. Front Endocrinol (Lausanne) 2023; 14:1153689. [PMID: 37265706 PMCID: PMC10229820 DOI: 10.3389/fendo.2023.1153689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/04/2023] [Indexed: 06/03/2023] Open
Abstract
Osteoarthritis (OA) is the most common degenerative and progressive joint disease. Cellular senescence is an irreversible cell cycle arrest progressive with age, while protein glycosylation is the most abundant post-translational modification, regulating various cellular and biological pathways. The implication of either chondrocyte senescence or protein glycosylation in the OA pathogenesis has been extensively and individually studied. In this study, we aimed to investigate the possible relationship between chondrocyte senescence and protein glycosylation on the pathogenesis of OA using single-cell RNA sequencing datasets of clinical OA specimens deposited in the Gene Expression Omnibus database with a different cohort. We demonstrated that both cellular senescence signal and protein glycosylation pathways in chondrocytes are validly associated with OA pathogenesis. In addition, the cellular senescence signal is well-connected to the O-linked glycosylation pathway in OA chondrocyte and vice-versa. The expression levels of the polypeptide N-acetylgalactosaminyltransferase (GALNT) family, which is essential for the biosynthesis of O-Glycans at the early stage, are highly upregulated in OA chondrocytes. Moreover, the expression levels of the GALNT family are prominently associated with chondrocyte senescence as well as pathological features of OA. Collectively, these findings uncover a crucial relationship between chondrocyte senescence and O-linked glycosylation on the OA pathophysiology, thereby revealing a potential target for OA.
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Affiliation(s)
- Makoto Yoshimoto
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Koki Sadamori
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuya Tokumura
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Yuki Tanaka
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuya Fukasawa
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
| | - Eiichi Hinoi
- Department of Bioactive Molecules, Pharmacology, Gifu Pharmaceutical University, Gifu, Japan
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research, Division of Innovative Modality Development, Gifu University, Gifu, Japan
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7
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Pellegrino F. The trap of genetic tag: The importance of pathogenicity prediction tools in the correct interpretation of variants of uncertain significance in the era of high-throughput genome sequencing. Clin Case Rep 2023; 11:e7054. [PMID: 37151944 PMCID: PMC10155503 DOI: 10.1002/ccr3.7054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/12/2023] [Accepted: 02/20/2023] [Indexed: 05/09/2023] Open
Abstract
Although recent advancements in DNA sequencing technologies and their widely used, the interpretation of variants of uncertain significance from these large datasets is not clear-cut. Here, we present the case of a family referred to our metabolic disease department, in which three males' individuals were affected by a suspected a genetic inherited disease, resulting from next-generation sequencing results. A correct assessment of the clinical significance of the genetic variant found in our cases, with a review of the literature, the evaluation of population database and the use of computational predictive program changed the initial suspect. Despite NGS technologies have increased diagnostic sensitivity, most of these variants remains of uncertain clinical significance. An efficient systematic approach is fundamental to determine the pathogenicity of a variant, avoiding incorrect interpretation in a clinical setting.
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Affiliation(s)
- Francesco Pellegrino
- Department of Pediatrics, AOU Città della Salute e della Scienza di TorinoUniversity of TorinoTurinItaly
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8
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Kurebayashi Y, Takeuchi H. Special Issue: New Insights into Protein Glycosylation. Molecules 2023; 28:molecules28073263. [PMID: 37050026 PMCID: PMC10097063 DOI: 10.3390/molecules28073263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 04/01/2023] [Indexed: 04/09/2023] Open
Abstract
Protein glycosylation is a general post-translational modification pathway that controls various biological functions including protein trafficking, cell adhesion, and protein-ligand interaction [...]
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Affiliation(s)
- Yuuki Kurebayashi
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Hideyuki Takeuchi
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
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9
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Elsharkawi I, Wongkittichote P, James Paul Daniel E, Starosta RT, Ueda K, Ng BG, Freeze HH, He M, Shinawi M. DDOST-CDG: Clinical and molecular characterization of a third patient with a milder and a predominantly movement disorder phenotype. J Inherit Metab Dis 2023; 46:92-100. [PMID: 36214423 PMCID: PMC9852036 DOI: 10.1002/jimd.12565] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/02/2022] [Accepted: 09/30/2022] [Indexed: 01/22/2023]
Abstract
Congenital disorders of glycosylation (CDG) are a group of heterogeneous inherited metabolic disorders affecting posttranslational protein modification. DDOST-CDG, caused by biallelic pathogenic variants in DDOST which encodes dolichyl-diphospho-oligosaccharide-protein glycosyltransferase, a subunit of N-glycosylation oligosaccharyltransferase (OST) complex, is an ultra-rare condition that has been described in two patients only. The main clinical features in the two reported patients include profound developmental delay, failure to thrive, and hypotonia. In addition, both patients had abnormal transferrin glycosylation. Here, we report an 18-year-old male who presented with moderate developmental delay, progressive opsoclonus, myoclonus, ataxia, tremor, and dystonia. Biochemical studies by carbohydrate deficient transferrin analysis showed a type I CDG pattern. Exome sequencing identified compound heterozygous variants in DDOST: a maternally inherited variant, c.1142dupT (p.Leu381Phefs*11), and a paternally inherited variant, c.661 T > C (p.Ser221Pro). Plasma N-glycan profiling showed mildly increased small high mannose glycans including Man0-5 GlcNAc2, a pattern consistent with what was previously reported in DDOST-CDG or defects in other subunits of OST complex. Western blot analysis on patient's fibroblasts revealed decreased expression of DDOST and reduced intracellular N-glycosylation, as evident by the biomarkers ICAM-1 and LAMP2. Our study highlights the clinical variability, expands the clinical and biochemical phenotypes, and describes new genotype, which all are essential for diagnosing and managing patients with DDOST-CDG.
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Affiliation(s)
- Ibrahim Elsharkawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO, USA
- Mitochondrial Medicine Frontier Program, Division of Human Genetics, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Parith Wongkittichote
- Division of Genetics and Genomic Medicine, Department of Pediatrics, St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Rodrigo Tzovenos Starosta
- Division of Genetics and Genomic Medicine, Department of Pediatrics, St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO, USA
| | - Keisuke Ueda
- Division of Pediatric Neurology, Department of Neurology, St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO, USA
| | - Bobby G. Ng
- Human Genetics Program, Sanford Children’s Health Research Center, La Jolla, CA, USA
| | - Hudson H. Freeze
- Human Genetics Program, Sanford Children’s Health Research Center, La Jolla, CA, USA
| | - Miao He
- Palmieri Metabolic Disease Laboratory, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO, USA
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10
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Papi A, Zamani M, Shariati G, Sedaghat A, Seifi T, Negahdari S, Sedighzadeh SS, Zeighami J, Saberi A, Hamid M, Galehdari H. Whole exome sequencing reveals several novel variants in congenital disorders of glycosylation and glycogen storage diseases in seven patients from Iran. Mol Genet Genomic Med 2022; 11:e2099. [PMID: 36579437 PMCID: PMC9938746 DOI: 10.1002/mgg3.2099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/28/2022] [Accepted: 11/03/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Congenital disorder of glycosylation (CDG) and Glycogen storage diseases (GSDs) are inborn metabolic disorders caused by defects in some metabolic pathways. These disorders are a heterogeneous group of diseases caused by impaired O- as well as N-glycosylation pathways. CDG patients show a broad spectrum of clinical presentations; many GSD types (PGM1-CDG) have muscle involvement and hypoglycemia. METHODS We applied WES for all seven patients presenting GSD and CDG symptoms. Then we analyzed the data using various tools to predict pathogenic variants in genes related to the patients' diseases. RESULTS In the present study, we identified pathogenic variants in Iranian patients suffering from GSD and CDG, which can be helpful for patient management, and family counseling. We detected seven pathogenic variants using whole exome sequencing (WES) in known AGL (c.1998A>G, c.3635T>C, c.3682C>T), PGM1 (c.779G>A), DPM1 (c.742T>C), RFT1 (c.127A>G), and GAA (c.1314C>A) genes. CONCLUSION The suspected clinical diagnosis of CDG and GSD patients was confirmed by identifying missense and or nonsense mutations in PGM1, DPM1, RFT1, GAA, and AGL genes by WES of all 7 cases. This study helps us understand the scenario of the disorder causes and consider the variants for quick disease diagnosis.
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Affiliation(s)
- Atefe Papi
- Department of Genetics, Faculty of ScienceShahid Chamran University of AhvazAhvazIran
| | - Mina Zamani
- Department of Genetics, Faculty of ScienceShahid Chamran University of AhvazAhvazIran,Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran
| | - Gholamreza Shariati
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran,Department of Medical GeneticsJundishapur University of medical SciencesAhvazIran
| | - Alireza Sedaghat
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran,Health Research Institute, Diabetes Research CenterJundishapur University of Medical SciencesAhvazIran
| | - Tahere Seifi
- Department of Genetics, Faculty of ScienceShahid Chamran University of AhvazAhvazIran,Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran
| | - Samira Negahdari
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran,Legal Medicine Research CenterLegal Medicine OrganizationTehranIran
| | - Sahar Sadat Sedighzadeh
- Department of Genetics, Faculty of ScienceShahid Chamran University of AhvazAhvazIran,Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran
| | - Jawaher Zeighami
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran
| | - Alihossein Saberi
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryAhvazIran,Department of Medical GeneticsJundishapur University of medical SciencesAhvazIran
| | - Mohammad Hamid
- Department of Molecular Medicine, Biotechnology Research CenterPasteur Institute of IranTehranIran
| | - Hamid Galehdari
- Department of Genetics, Faculty of ScienceShahid Chamran University of AhvazAhvazIran
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11
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Harada Y, Ohkawa Y, Maeda K, Taniguchi N. Glycan quality control in and out of the endoplasmic reticulum of mammalian cells. FEBS J 2022; 289:7147-7162. [PMID: 34492158 DOI: 10.1111/febs.16185] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/23/2021] [Accepted: 09/06/2021] [Indexed: 01/13/2023]
Abstract
The endoplasmic reticulum (ER) is equipped with multiple quality control systems (QCS) that are necessary for shaping the glycoproteome of eukaryotic cells. These systems facilitate the productive folding of glycoproteins, eliminate defective products, and function as effectors to evoke cellular signaling in response to various cellular stresses. These ER functions largely depend on glycans, which contain sugar-based codes that, when needed, function to recruit carbohydrate-binding proteins that determine the fate of glycoproteins. To ensure their functionality, the biosynthesis of such glycans is therefore strictly monitored by a system that selectively degrades structurally defective glycans before adding them to proteins. This system, which is referred to as the glycan QCS, serves as a mechanism to reduce the risk of abnormal glycosylation under conditions where glycan biosynthesis is genetically or metabolically stalled. On the other hand, glycan QCS increases the risk of global hypoglycosylation by limiting glycan availability, which can lead to protein misfolding and the activation of unfolded protein response to maintaining cell viability or to initiate cell death programs. This review summarizes the current state of our knowledge of the mechanisms underlying glycan QCS in mammals and its physiological and pathological roles in embryogenesis, tumor progression, and congenital disorders associated with abnormal glycosylation.
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Affiliation(s)
- Yoichiro Harada
- Department of Glyco-Oncology and Medical Biochemistry, Osaka International Cancer Institute, Osaka, Japan
| | - Yuki Ohkawa
- Department of Glyco-Oncology and Medical Biochemistry, Osaka International Cancer Institute, Osaka, Japan
| | - Kento Maeda
- Department of Glyco-Oncology and Medical Biochemistry, Osaka International Cancer Institute, Osaka, Japan
| | - Naoyuki Taniguchi
- Department of Glyco-Oncology and Medical Biochemistry, Osaka International Cancer Institute, Osaka, Japan
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12
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Będkowska N, Zontek A, Paprocka J. Stroke-like Episodes in Inherited Neurometabolic Disorders. Metabolites 2022; 12:metabo12100929. [PMID: 36295831 PMCID: PMC9611026 DOI: 10.3390/metabo12100929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 11/07/2022] Open
Abstract
Stroke-like episodes (SLEs) are significant clinical manifestations of metabolic disorders affecting the central nervous system. Morphological equivalents presented in neuroimaging procedures are described as stroke-like lesions (SLLs). It is crucial to distinguish SLEs from cerebral infarction or intracerebral hemorrhage, mainly due to the variety in management. Another significant issue to underline is the meaning of the main pathogenetic hypotheses in the development of SLEs. The diagnostic process is based on the patient’s medical history, physical and neurological examination, neuroimaging techniques and laboratory and genetic testing. Implementation of treatment is generally symptomatic and includes L-arginine supplementation and adequate antiepileptic management. The main aim of the current review was to summarize the basic and actual knowledge about the occurrence of SLEs in various inherited neurometabolic disorders, discuss the possible pathomechanism of their development, underline the role of neuroimaging in the detection of SLLs and identification of the electroencephalographic patterns as well as histological abnormalities in inherited disorders of metabolism.
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Affiliation(s)
- Natalia Będkowska
- Students’ Scientific Society, Department of Pediatric Neurology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Aneta Zontek
- Students’ Scientific Society, Department of Pediatric Neurology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
| | - Justyna Paprocka
- Department of Pediatric Neurology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
- Correspondence:
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13
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Seo SH, Lee S, Park JKH, Yang EJ, Kim B, Lee JS, Kim MJ, Park SS, Seong MW, Nam SY, Heo CY, Myung Y. Clinical staging and genetic profiling of Korean patients with primary lymphedema using targeted gene sequencing. Sci Rep 2022; 12:13591. [PMID: 35948757 PMCID: PMC9365773 DOI: 10.1038/s41598-022-17958-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/03/2022] [Indexed: 11/23/2022] Open
Abstract
Lymphedema is a progressive disease caused by lymphatic flow blockage in the lymphatic pathway. Primary (hereditary) lymphedema is caused by genetic mutations without secondary causes. We performed clinical profiling on Korean primary lymphedema patients based on their phenotypes using lymphoscintigraphy and made genetic diagnoses using a next-generation sequencing panel consisting of 60 genes known to be related to primary lymphedema and vascular anomalies. Of 27 patients included in this study, 14.8% of the patients had lymphedema of the upper extremities, 77.8% had lymphedema of the lower extremities and 7.4% had 4-limbs lymphedema. Based on the International Society of Lymphology staging, 14, 10, and 3 patients had stage 3, 2, and 1 lymphedema, respectively. Only one family was genetically confirmed to harbor likely pathogenic variants in CELSR1. The proband was carrying two likely pathogenic variants in CELSR1, while her symptomatic mother was confirmed to carry only one of the variants. Furthermore, two other variants of uncertain significance in CELSR1 were detected in other patients, making CELSR1 the most commonly altered gene in our study. The clinical and genetic profile of hereditary lymphedema reported here is the first such data series reported for South Korea.
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Affiliation(s)
- Soo Hyun Seo
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Seungjun Lee
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Joseph Kyu-Hyung Park
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Eun Joo Yang
- Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Boram Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Jee-Soo Lee
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Man Jin Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Sung Sup Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea.,Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Moon-Woo Seong
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea.,Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Sun-Young Nam
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Chan-Yeong Heo
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Yujin Myung
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea.
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14
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Lausmann H, Zacharias M, Neuhann TM, Locher MK, Schettler KF. Case Report: DPM1-CDG: Novel Variant with Severe Phenotype and Literature Review. Front Genet 2022; 13:889829. [PMID: 35910228 PMCID: PMC9326363 DOI: 10.3389/fgene.2022.889829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/10/2022] [Indexed: 12/05/2022] Open
Abstract
Background: Congenital disorders of glycosylation (CDG) type I include variants in the DPM1 gene leading to DPM1-CDG. The nine previously reported patients showed developmental delay, seizures, electroencephalography abnormalities and dysmorphic features with varying disease onset and severity. Methods: Clinical features of a new patient are described. Whole exome sequencing using NGS was performed, followed by molecular simulation of the structural changes in the protein. Results: Our patient with DPM1-CDG presented with more severe symptoms and an earlier onset, specifically non-febrile seizures from the age of 3 weeks, global developmental delay, and severely retarded motor skills. She died at the age of 11 weeks after fulminant sepsis. We identified compound heterozygous variants in the DPM1 gene, one previously reported point mutation c.1A > C p.? as well as the novel variant c.239_241del p.(Lys80del), resulting in the first in-frame deletion located in exon 2. Loss of Lys80 may lead to an impaired α-helical configuration next to the GDP/GTP binding site. Conclusion: The presented case extends the spectrum of DPM1-CDG to a very young and severely affected child. The deletion of Lys80 in DPM1 results in an impaired helical configuration. This has implications for further understanding the association of structure and function of DPM1.
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Affiliation(s)
- Hanna Lausmann
- Children’s Hospital St. Marien gGmbH, Landshut, Germany
- *Correspondence: Hanna Lausmann,
| | - Martin Zacharias
- Center of Functional Protein Assemblies, Technical University of Munich, Garching, Germany
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15
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Alg mannosyltransferases: From functional and structural analyses to the lipid-linked oligosaccharide pathway reconstitution. Biochim Biophys Acta Gen Subj 2022; 1866:130112. [PMID: 35217128 DOI: 10.1016/j.bbagen.2022.130112] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 02/06/2022] [Accepted: 02/12/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND N-glycosylation is initiated from the biosynthesis of lipid-linked oligosaccharide (LLO) on the endoplasmic reticulum (ER), which is catalyzed by a series of Alg (asparagine-linked glycosylation) proteins. SCOPE OF REVIEW This review summarizes our recent studies on the enzymology of Alg mannosyltransferases (MTases). We also discuss the membrane topology and physiological importance of several ER cytosolic Alg proteins. MAJOR CONCLUSIONS Utilizing an efficient prokaryotic protein expression system and a new LC-MS quantitative activity assay, we overexpressed all Alg MTases and performed enzymology studies. Moreover, by reconstituting the LLO pathway, the high-yield chemoenzymatic synthesis of high-mannose-type N-glycans was accomplished using recombinant Alg MTases. GENERAL SIGNIFICANCE The analysis of the enzymology and topology of Alg MTases has provided valuable biochemical information in the LLO biosynthesis pathway. In addition, an efficient chemoenzymatic strategy that could prepare various oligomannose-type N-glycans in sufficient amounts was established for further biological assays.
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16
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Chauvin SD, Price S, Zou J, Hunsberger S, Brofferio A, Matthews H, Similuk M, Rosenzweig SD, Su HC, Cohen JI, Lenardo MJ, Ravell JC. A Double-Blind, Placebo-Controlled, Crossover Study of Magnesium Supplementation in Patients with XMEN Disease. J Clin Immunol 2022; 42:108-118. [PMID: 34655400 PMCID: PMC10655616 DOI: 10.1007/s10875-021-01137-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/07/2021] [Indexed: 11/28/2022]
Abstract
X-linked MAGT1 deficiency with increased susceptibility to Epstein-Barr virus (EBV) infection and N-linked glycosylation defect (XMEN) disease is an inborn error of immunity caused by loss-of-function mutations in the magnesium transporter 1 (MAGT1) gene. The original studies of XMEN patients focused on impaired magnesium regulation, leading to decreased EBV-cytotoxicity and the loss of surface expression of the activating receptor "natural killer group 2D" (NKG2D) on CD8+ T cells and NK cells. In vitro studies showed that supraphysiological supplementation of magnesium rescued these defects. Observational studies in 2 patients suggested oral magnesium supplementation could decrease EBV viremia. Hence, we performed a randomized, double-blind, placebo-controlled, crossover study in 2 parts. In part 1, patients received either oral magnesium L-threonate (MLT) or placebo for 12 weeks followed by 12 weeks of the other treatment. Part 2 began with 3 days of high-dose intravenous (IV) magnesium sulfate (MgSO4) followed by open-label MLT for 24 weeks. One EBV-infected and 3 EBV-naïve patients completed part 1. One EBV-naïve patient was removed from part 2 of the study due to asymptomatic elevation of liver enzymes during IV MgSO4. No change in EBV or NKG2D status was observed. In vitro magnesium supplementation experiments in cells from 14 XMEN patients failed to significantly rescue NKG2D expression and the clinical trial was stopped. Although small, this study indicates magnesium supplementation is unlikely to be an effective therapeutic option in XMEN disease.
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Affiliation(s)
- Samuel D Chauvin
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Susan Price
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Juan Zou
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA
| | - Sally Hunsberger
- Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Alessandra Brofferio
- Cardiovascular and Pulmonary Branch, National Heart Lung and Blood Institute, Bethesda, MD, USA
| | - Helen Matthews
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA
| | - Morgan Similuk
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA
| | - Sergio D Rosenzweig
- Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, MD, USA
| | - Helen C Su
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Jeffrey I Cohen
- Medical Virology Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, USA
| | - Michael J Lenardo
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA.
| | - Juan C Ravell
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, Division of Intramural Research, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Building 10, Room 11N311, 10 Center Drive, MSC 1892, Bethesda, MD, 20892-1892, USA.
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA.
- Division of Allergy and Immunology, Department of Internal Medicine, Hackensack University Medical Center, 360 Essex Street, Suite 302, Hackensack, NJ, 07601, USA.
- Department of Internal Medicine, Hackensack Meridian School of Medicine, Nutley, NJ, USA.
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17
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Genotype-Phenotype Correlations in PMM2-CDG. Genes (Basel) 2021; 12:genes12111658. [PMID: 34828263 PMCID: PMC8620515 DOI: 10.3390/genes12111658] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 02/03/2023] Open
Abstract
PMM2-CDG is a rare disease, causing hypoglycosylation of multiple proteins, hence preventing full functionality. So far, no direct genotype–phenotype correlations have been identified. We carried out a retrospective cohort study on 26 PMM2-CDG patients. We collected the identified genotype, as well as continuous variables indicating the disease severity (based on Nijmegen Pediatric CDG Rating Score or NPCRS) and dichotomous variables reflecting the patients’ phenotype. The phenotypic effects of patients’ genotype were studied using non-parametric and Chi-Square tests. Seventeen different pathogenic variants have been studied. Variants with zero enzyme activity had no significant impact on the Nijmegen score. Pathogenic variants involving the stabilization/folding domain have a significantly lower total NPCRS (p = 0.017): presence of the p.Cys241Ser mutation had a significantly lower subscore 1,3 and NPCRS (p = 0.04) and thus result in a less severe phenotype. On the other hand, variants involving the dimerization domain, p.Pro113Leu and p.Phe119Leu, resulted in a significantly higher NPCRS score (p = 0.002), which indicates a worse clinical course. These concepts give a better insight in the phenotypic prognosis of PMM2-CDG, according to their molecular base.
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18
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Hayes JM, O'Hara DM, Davey GP. Metabolic Labeling of Primary Neurons Using Carbohydrate Click Chemistry. Methods Mol Biol 2021; 2370:315-322. [PMID: 34611877 DOI: 10.1007/978-1-0716-1685-7_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Glycans play an important role in many neuronal processes, such as neurotransmitter release and reuptake, cell-cell communication and adhesion, modulation of ion channel activity, and immune function. Carbohydrate click chemistry is a powerful technique for studying glycan function and dynamics in vitro, in vivo, and ex vivo. Here, we use commercially available synthetic tetraacetylated azido sugars, copper and copper-free click chemistry to metabolically label and analyze primary rat cortical neurons. In addition, we use high resolution confocal and STED microscopy to image and analyze different forms of glycosylation in ultrahigh resolution. We observe different patterns of GlcNAz, GalNAz, and ManNAz distribution at different stages of neuronal development. We also observe highly sialylated structures on the neuronal plasma membrane, which warrant further investigation.
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Affiliation(s)
- Jerrard M Hayes
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Darren M O'Hara
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Gavin P Davey
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland.
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19
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Chen S, Wu D, Robinson CV, Struwe WB. Native Mass Spectrometry Meets Glycomics: Resolving Structural Detail and Occupancy of Glycans on Intact Glycoproteins. Anal Chem 2021; 93:10435-10443. [PMID: 34279906 DOI: 10.1021/acs.analchem.1c01460] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Glycoproteins are inherently heterogeneous and therefore resolving structures in their entirety remains a major challenge in structural biology. Native mass spectrometry has transformed our ability to study glycoproteins, and despite advances in high-resolution instrumentation, there are comparatively a few studies demonstrating its potential with data largely limited to an overall measure of monosaccharide composition for all glycans across glycosylation sites for a given protein. Clearly, these readouts lack glycan topology information, namely, monosaccharide linkage and glycan branching. To address this deficiency, we developed a new approach that joins native mass spectrometry with glycan exoglycosidase sequencing, the combination of which provides remarkable glycoprotein structural details. We show how N-glycan branching, terminal fucosylation, LacNAc extensions, and N- and O-glycan occupancy (i.e., total number of glycans) can be directly characterized on intact glycoproteins with minimal sample preparation. Taken together, native exoglycosidase sequencing mass spectrometry (NES-MS) notably improves our ability to characterize protein glycosylation, addressing a significant need in structural biology that will enable new routes to understand glycoprotein function.
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Affiliation(s)
- Siyun Chen
- Physical and Theoretical Chemistry, Department of Chemistry, University of Oxford, OX1 3QZ Oxford, U.K
| | - Di Wu
- Physical and Theoretical Chemistry, Department of Chemistry, University of Oxford, OX1 3QZ Oxford, U.K
| | - Carol V Robinson
- Physical and Theoretical Chemistry, Department of Chemistry, University of Oxford, OX1 3QZ Oxford, U.K
| | - Weston B Struwe
- Physical and Theoretical Chemistry, Department of Chemistry, University of Oxford, OX1 3QZ Oxford, U.K
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20
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Khoder-Agha F, Kietzmann T. The glyco-redox interplay: Principles and consequences on the role of reactive oxygen species during protein glycosylation. Redox Biol 2021; 42:101888. [PMID: 33602616 PMCID: PMC8113034 DOI: 10.1016/j.redox.2021.101888] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 12/21/2022] Open
Abstract
Reactive oxygen species (ROS) carry out prime physiological roles as intracellular signaling agents, yet pathologically high concentrations of ROS cause irreversible damage to biomolecules, alter cellular programs and contribute to various diseases. While decades of intensive research have identified redox-related patterns and signaling pathways, very few addressed how the glycosylation machinery senses and responds to oxidative stress. A common trait among ROS and glycans residing on glycoconjugates is that they are both highly dynamic, as they are quickly fine-tuned in response to stressors such as inflammation, cancer and infectious diseases. On this account, the delicate balance of the redox potential, which is tightly regulated by dozens of enzymes including NOXs, and the mitochondrial electron transport chain as well as the fluidity of glycan biosynthesis resulting from the cooperation of glycosyltransferases, glycosidases, and nucleotide sugar transporters, is paramount to cell survival. Here, we review the broad spectrum of the interplay between redox changes and glycosylation with respect to their principle consequences on human physiology.
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Affiliation(s)
- Fawzi Khoder-Agha
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Kietzmann
- University of Oulu, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, Oulu, Finland.
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21
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Lipiński P, Cielecka-Kuszyk J, Czarnowska E, Bogdańska A, Socha P, Tylki-Szymańska A. Congenital disorders of glycosylation in children - Histopathological and ultrastructural changes in the liver. Pediatr Neonatol 2021; 62:278-283. [PMID: 33663989 DOI: 10.1016/j.pedneo.2021.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/10/2020] [Accepted: 01/27/2021] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND Congenital disorders of glycosylation (CDG) result from defects in the synthesis of glycans and their attachment to proteins and lipids. Histologically, liver steatosis, fibrosis and cirrhosis have been reported in CDG. The aim of the study was to characterize the histopathological and ultrastructural liver changes in CDG patients hospitalized in our Institute, and to find the most characteristic features, as articles concerning the liver microscopic features in CDG are sparse. METHODS Out of 32 CDG patients diagnosed and followed-up in our Institute, the liver biopsy was performed in 4 of them, including 2 with MPI-CDG, 1 with SRD5A3-CDG, and 1 with PGM1-CDG, as a part of diagnostic process. In one patient, diagnosed post mortem with PMM2-CDG, the histopathological study comprised liver autopsy samples. RESULTS The most common histopathological liver finding was the presence of steatosis (4/5) of varying severity, the mixed macro- and microvesicular type as well as the foamy degeneration of hepatocytes. In two patients, liver steatosis was associated with fibrosis, stage 4 (cirrhosis) and 2 according to Batts and Ludwig classification, respectively. In two patients, besides steatosis, mild inflammatory infiltrates composed of lymphoid cells in portal tracts were observed. No correlation between the patient's age and histopathological features was observed. CONCLUSIONS The histopathological changes in the liver of CDG patients are miscellaneous; thus, based on the microscopic examination only, we can not identify (even suspect) the exact CDG. The most common histopathologic finding in our cohort of CDG patients was the presence of liver steatosis (of various severity) and foamy degeneration of hepatocytes.
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Affiliation(s)
- Patryk Lipiński
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Elżbieta Czarnowska
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Anna Bogdańska
- Department of Biochemistry, Radioimmunology and Experimental Medicine, The Children's Memorial Health Institute, Warsaw, Poland
| | - Piotr Socha
- Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, The Children's Memorial Health Institute, Warsaw, Poland
| | - Anna Tylki-Szymańska
- Department of Pediatrics, Nutrition and Metabolic Diseases, The Children's Memorial Health Institute, Warsaw, Poland.
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22
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Conte F, van Buuringen N, Voermans NC, Lefeber DJ. Galactose in human metabolism, glycosylation and congenital metabolic diseases: Time for a closer look. Biochim Biophys Acta Gen Subj 2021; 1865:129898. [PMID: 33878388 DOI: 10.1016/j.bbagen.2021.129898] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/30/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022]
Abstract
Galactose is an essential carbohydrate for cellular metabolism, as it contributes to energy production and storage in several human tissues while also being a precursor for glycosylation. Galactosylated glycoconjugates, such as glycoproteins, keratan sulfate-containing proteoglycans and glycolipids, exert a plethora of biological functions, including structural support, cellular adhesion, intracellular signaling and many more. The biological relevance of galactose is further entailed by the number of pathogenic conditions consequent to defects in galactosylation and galactose homeostasis. The growing number of rare congenital disorders involving galactose along with its recent therapeutical applications are drawing increasing attention to galactose metabolism. In this review, we aim to draw a comprehensive overview of the biological functions of galactose in human cells, including its metabolism and its role in glycosylation, and to provide a systematic description of all known congenital metabolic disorders resulting from alterations of its homeostasis.
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Affiliation(s)
- Federica Conte
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Nicole van Buuringen
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Nicol C Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Dirk J Lefeber
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands; Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands.
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23
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Anzai R, Tsuji M, Yamashita S, Wada Y, Okamoto N, Saitsu H, Matsumoto N, Goto T. Congenital disorders of glycosylation type IIb with MOGS mutations cause early infantile epileptic encephalopathy, dysmorphic features, and hepatic dysfunction. Brain Dev 2021; 43:402-410. [PMID: 33261925 DOI: 10.1016/j.braindev.2020.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 10/11/2020] [Accepted: 10/25/2020] [Indexed: 01/05/2023]
Abstract
AIM MOGS mutations cause congenital disorders of glycosylation type IIb (CDG-IIb or GCS1-CDG). The specific manifestations caused by the mutations in this gene remain unknown. We aimed to describe the clinical features of CDG- IIb and the effectiveness of urinary oligosaccharide analysis in the diagnosis of CDG- IIb. METHODS Patient 1 was analyzed with whole-exome sequencing (WES) to identify the causative gene of intractable epilepsy and severe developmental delay. After detecting MOGS mutation in patient 1, we analyzed patients 2 and 3 who were siblings and had clinical features similar to those in patient 1. Urinary oligosaccharide analysis was performed to confirm CDG- IIb diagnosis in patient 1. The clinical features of these patients were analyzed and compared with those in eight published cases. RESULTS Our three patients presented with early infantile epileptic encephalopathy, generalized hypotonia, hepatic dysfunction and dysmorphic features. In two cases, compound heterozygous mutations in MOGS were identified by WES. Isolation and characterization of the urinary oligosaccharide was performed in one of these cases to confirm the diagnosis of CDG-IIb. Although the isoelectric focusing of transferrin (IEF-T) of serum in this patient was normal, urinary excretion of Hex4 corresponding to Glc3Man was observed by mass spectrometry. CONCLUSION This report provides clinical manifestations of CDG-IIb with MOGS mutation. CDG-IIb shows a normal IEF profile of serum transferrin and cannot be detected by structural analysis of the patient's glycoproteins. Characterization of urinary oligosaccharides should be considered to detect this disorder.
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Affiliation(s)
- Rie Anzai
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan.
| | - Megumi Tsuji
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Sumimasa Yamashita
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Yoshinao Wada
- Department of Molecular Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Nobuhiko Okamoto
- Department of Molecular Medicine, Osaka Women's and Children's Hospital, Osaka, Japan; Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Tomohide Goto
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
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N-Linked Glycosylation Plays an Important Role in Budding of Neuraminidase Protein and Virulence of Influenza Viruses. J Virol 2021; 95:JVI.02042-20. [PMID: 33177197 DOI: 10.1128/jvi.02042-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 10/25/2020] [Indexed: 02/06/2023] Open
Abstract
Neuraminidase (NA) has multiple functions in the life cycle of influenza virus, especially in the late stage of virus replication. Both of hemagglutinin (HA) and NA are highly glycosylated proteins. N-linked glycosylation (NLG) of HA has been reported to contribute to immune escape and virulence of influenza viruses. However, the function of NLG of NA remains largely unclear. In this study, we found that NLG is critical for budding ability of NA. Tunicamycin treatment or NLG knockout significantly inhibited the budding of NA. Further studies showed that the NLG knockout caused attenuation of virus in vitro and in vivo Notably, the NLG at 219 position plays an important role in the budding, replication, and virulence of H1N1 influenza virus. To explore the underlying mechanism, the unfolded protein response (UPR) was determined in NLG knockout NA overexpressed cells, which showed that the mutant NA was mainly located in the endoplasmic reticulum (ER), the UPR markers BIP and p-eIF2α were upregulated, and XBP1 was downregulated. All the results indicated that NLG knockout NA was stacked in the ER and triggered UPR, which might shut down the budding process of NA. Overall, the study shed light on the function of NLG of NA in virus replication and budding.IMPORTANCE NA is a highly glycosylated protein. Nevertheless, how the NLG affects the function of NA protein remains largely unclear. In this study, we found that NLG plays important roles in budding and Neuraminidase activity of NA protein. Loss of NLG attenuated viral budding and replication. In particular, the 219 NLG site mutation significantly attenuated the replication and virulence of H1N1 influenza virus in vitro and in vivo, which suggested that NLG of NA protein is a novel virulence marker for influenza viruses.
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Kori M, Aydin B, Gulfidan G, Beklen H, Kelesoglu N, Caliskan Iscan A, Turanli B, Erzik C, Karademir B, Arga KY. The Repertoire of Glycan Alterations and Glycoproteins in Human Cancers. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2021; 25:139-168. [PMID: 33404348 DOI: 10.1089/omi.2020.0210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cancer as the leading cause of death worldwide has many issues that still need to be addressed. Since the alterations on the glycan compositions or/and structures (i.e., glycosylation, sialylation, and fucosylation) are common features of tumorigenesis, glycomics becomes an emerging field examining the structure and function of glycans. In the past, cancer studies heavily relied on genomics and transcriptomics with relatively little exploration of the glycan alterations and glycoprotein biomarkers among individuals and populations. Since glycosylation of proteins increases their structural complexity by several orders of magnitude, glycome studies resulted in highly dynamic biomarkers that can be evaluated for cancer diagnosis, prognosis, and therapy. Glycome not only integrates our genetic background with past and present environmental factors but also offers a promise of more efficient patient stratification compared with genetic variations. Therefore, studying glycans holds great potential for better diagnostic markers as well as developing more efficient treatment strategies in human cancers. While recent developments in glycomics and associated technologies now offer new possibilities to achieve a high-throughput profiling of glycan diversity, we aim to give an overview of the current status of glycan research and the potential applications of the glycans in the scope of the personalized medicine strategies for cancer.
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Affiliation(s)
- Medi Kori
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Busra Aydin
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Gizem Gulfidan
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Hande Beklen
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Nurdan Kelesoglu
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Ayşegul Caliskan Iscan
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey.,Department of Pharmacy, Istinye University, Istanbul, Turkey
| | - Beste Turanli
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Can Erzik
- Department of Medical Biology and School of Medicine, Marmara University, Istanbul, Turkey
| | - Betul Karademir
- Department of Biochemistry, School of Medicine, Marmara University, Istanbul, Turkey.,Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, Istanbul, Turkey
| | - Kazim Yalcin Arga
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
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26
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Lipiński P, Bogdańska A, Socha P, Tylki-Szymańska A. Liver Involvement in Congenital Disorders of Glycosylation and Deglycosylation. Front Pediatr 2021; 9:696918. [PMID: 34291020 PMCID: PMC8286991 DOI: 10.3389/fped.2021.696918] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 06/07/2021] [Indexed: 12/16/2022] Open
Abstract
Background: Congenital disorders of glycosylation (CDG) and NGLY1-CDDG (NGLY1-congenital disorder of deglycosylation) usually represent multisystem (especially neurovisceral) diseases with liver involvement reported in some of them. The aim of the study was to characterize the liver phenotype in CDG and NGLY1-CDDG patients hospitalized in our Institute, and to find the most specific features of liver disease among them. Material and Methods: The study involved 39 patients (from 35 families) with CDG, and two patients (from two families) with NGLY1-CDDG, confirmed molecularly, for whom detailed characteristics of liver involvement were available. They were enrolled based on the retrospective analysis of their medical records. Results: At the time of the first consultation, 13/32 patients were diagnosed with hepatomegaly; none of them with splenomegaly. As many as 23/32 persons had elevated serum transaminases, including 16 (70%) who had mildly elevated levels. During the long-term follow-up (available for 19 patients), serum transaminases normalized in 15/19 (79%) of them, including a spontaneous normalization in 12/15 (80%) of them. The GGT activity was observed to be normal in all study cases. Protein C, protein S and antithrombin activities in plasma were observed in 16 patients, and they were decreased in all of them. Conclusions: It is necessary to conduct a long-term follow-up of liver disease in CDG to obtain comprehensive data.
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Affiliation(s)
- Patryk Lipiński
- Department of Pediatrics, Nutrition and Metabolic Diseases, Children's Memorial Health Institute, Warsaw, Poland
| | - Anna Bogdańska
- Department of Biochemistry, Radioimmunology and Experimental Medicine, Children's Memorial Health Institute, Warsaw, Poland
| | - Piotr Socha
- Department of Gastroenterology, Hepatology, Feeding Difficulties and Pediatrics, Children's Memorial Health Institute, Warsaw, Poland
| | - Anna Tylki-Szymańska
- Department of Pediatrics, Nutrition and Metabolic Diseases, Children's Memorial Health Institute, Warsaw, Poland
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27
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Ogharandukun E, Tewolde W, Damtae E, Wang S, Ivanov A, Kumari N, Nekhai S, Chandran PL. Establishing Rules for Self-Adhesion and Aggregation of N-Glycan Sugars Using Virus Glycan Shields. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13769-13783. [PMID: 33186493 PMCID: PMC7798417 DOI: 10.1021/acs.langmuir.0c01953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The surfaces of cells and pathogens are covered with short polymers of sugars known as glycans. Complex N-glycans have a core of three mannose sugars with distal repeats of N-acetylglucosamine and galactose sugars terminating with sialic acid (SA). Long-range tough and short-range brittle self-adhesions were observed between SA and mannose residues, respectively, in ill-defined artificial monolayers. We investigated if and how these adhesions translate when the residues are presented in N-glycan architecture with SA at the surface and mannose at the core and with other glycan sugars. Two pseudotyped viruses with complex N-glycan shields were brought together in force spectroscopy (FS). At higher ramp rates, slime-like adhesions were observed between the shields, whereas Velcro-like adhesions were observed at lower rates. The higher approach rates compress the virus as a whole, and the self-adhesion between the surface SA is sampled. At the lower ramp rates, however, the complex glycan shield is penetrated and adhesion from the mannose core is accessed. The slime-like and Velcro-like adhesions were lost when SA and mannose were cleaved, respectively. While virus self-adhesion in forced contact was modulated by glycan penetrability, the self-aggregation of the freely diffusing virus was only determined by the surface sugar. Mannose-terminal viruses self-aggregated in solution, and SA-terminal ones required Ca2+ ions to self-aggregate. Viruses with galactose or N-acetylglucosamine surfaces did not self-aggregate, irrespective of whether or not a mannose core was present below the N-acetylglucosamine surface. Well-defined rules appear to govern the self-adhesion and -aggregation of N-glycosylated surfaces, regardless of whether the sugars are presented in an ill-defined monolayer, or N-glycan, or even polymer architecture.
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Casas-Alba D, López-Sala L, Pérez-Ordóñez M, Mari-Vico R, Bolasell M, Martínez-Monseny AF, Muchart J, Fernández-Fernández JM, Martorell L, Serrano M. Early-onset severe spinocerebellar ataxia 42 with neurodevelopmental deficits (SCA42ND): Case report, pharmacological trial, and literature review. Am J Med Genet A 2020; 185:256-260. [PMID: 33098379 DOI: 10.1002/ajmg.a.61939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/06/2020] [Accepted: 10/10/2020] [Indexed: 11/09/2022]
Abstract
Early-onset severe spinocerebellar ataxia 42 with neurodevelopmental deficits (SCA42ND, MIM#604065) is an ultrarare autosomal dominant syndrome related to de novo CACNA1G gain-of-function pathogenic variants. All patients with SCA42ND show cerebellar atrophy and/or hypoplasia on neuroimaging and share common features such as dysmorphic features, global developmental delay, and axial hypotonia, all manifesting within the first year of life. To date, only 10 patients with SCA42ND have been reported with functionally confirmed gain-of-function variants, bearing either of two recurrent pathogenic variants. We describe a girl with congenital ataxia, without epilepsy, and a de novo p.Ala961Thr pathogenic variant in CACNA1G. We review the published subjects with the aim of better characterizing the dysmorphic features that may be crucial for clinical recognition of SCA42ND. Cerebellar atrophy, together with digital anomalies, particularly broad thumbs and/or halluces, should lead to clinical suspicion of this disease. We describe the first pharmacological attempt to treat a patient with SCA42ND using zonisamide, an antiepileptic drug with T-type channel blocker activity, in an off-label indication using an itemized study protocol. No efficacy was observed at the dose tested. However, without pharmacological treatment, she showed a positive evolution in neurodevelopment during the follow-up.
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Affiliation(s)
- Dídac Casas-Alba
- Department of Pediatric Neurology and Early Stimulation Unit, Institut de Recerca, Hospital Sant Joan de Déu, Barcelona, Spain.,Department of Genetic and Molecular Medicine IPER, Institut de Recerca, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Laura López-Sala
- Department of Pediatric Neurology and Early Stimulation Unit, Institut de Recerca, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Marta Pérez-Ordóñez
- Department of Pediatric Neurology and Early Stimulation Unit, Institut de Recerca, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Rosanna Mari-Vico
- Department of Pediatric Neurology and Early Stimulation Unit, Institut de Recerca, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Mercè Bolasell
- Department of Genetic and Molecular Medicine IPER, Institut de Recerca, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Antonio F Martínez-Monseny
- Department of Genetic and Molecular Medicine IPER, Institut de Recerca, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - Jordi Muchart
- Department of Radiology, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain
| | - José M Fernández-Fernández
- Department de Ciències Experimentals i de la Salut, Laboratori de Fisiologia Molecular, Universitat Pompeu Fabra, Barcelona, Spain
| | - Loreto Martorell
- Department of Genetic and Molecular Medicine IPER, Institut de Recerca, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - Mercedes Serrano
- Department of Pediatric Neurology and Early Stimulation Unit, Institut de Recerca, Hospital Sant Joan de Déu, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
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Ugonotti J, Chatterjee S, Thaysen-Andersen M. Structural and functional diversity of neutrophil glycosylation in innate immunity and related disorders. Mol Aspects Med 2020; 79:100882. [PMID: 32847678 DOI: 10.1016/j.mam.2020.100882] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022]
Abstract
The granulated neutrophils are abundant innate immune cells that utilize bioactive glycoproteins packed in cytosolic granules to fight pathogenic infections, but the neutrophil glycobiology remains poorly understood. Facilitated by technological advances in glycoimmunology, systems glycobiology and glycoanalytics, a considerable body of literature reporting on novel aspects of neutrophil glycosylation has accumulated. Herein, we summarize the building knowledge of the structural and functional diversity displayed by N- and O-linked glycoproteins spatiotemporally expressed and sequentially brought-into-action across the diverse neutrophil life stages during bone marrow maturation, movements to, from and within the blood circulation and microbicidal processes at the inflammatory sites in peripheral tissues. It transpires that neutrophils abundantly decorate their granule glycoproteins including neutrophil elastase, myeloperoxidase and cathepsin G with peculiar glyco-signatures not commonly reported in other areas of human glycobiology such as hyper-truncated chitobiose core- and paucimannosidic-type N-glycans and monoantennary complex-type N-glycans. Sialyl Lewisx, Lewisx, poly-N-acetyllactosamine extensions and core 1-/2-type O-glycans are also common neutrophil glyco-signatures. Granule-specific glycosylation is another fascinating yet not fully understood feature of neutrophils. Recent literature suggests that unconventional biosynthetic pathways and functions underpin these prominent neutrophil-associated glyco-phenotypes. The impact of glycosylation on key neutrophil effector functions including extravasation, degranulation, phagocytosis and formation of neutrophil extracellular traps during normal physiological conditions and in innate immune-related diseases is discussed. We also highlight new technologies that are expected to further advance neutrophil glycobiology and briefly discuss the untapped diagnostic and therapeutic potential of neutrophil glycosylation that could open avenues to combat the increasingly prevalent innate immune disorders.
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Affiliation(s)
- Julian Ugonotti
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sayantani Chatterjee
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia
| | - Morten Thaysen-Andersen
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia; Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW, 2109, Australia.
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30
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Vaes L, Tiller GE, Pérez B, Boyer SW, Berry SA, Sarafoglou K, Morava E. PMM2-CDG caused by uniparental disomy: Case report and literature review. JIMD Rep 2020; 54:16-21. [PMID: 32685345 PMCID: PMC7358672 DOI: 10.1002/jmd2.12122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 04/01/2020] [Accepted: 04/06/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Phosphomannomutase 2 deficiency (PMM2-CDG) affects glycosylation pathways such as the N-glycosylation pathway, resulting in loss of function of multiple proteins. This disorder causes multisystem involvement with a high variability among patients. PMM2-CDG is an autosomal recessive disorder, which can be caused by inheriting two pathogenic variants, de novo mutations or uniparental disomy. CASE PRESENTATION Our patient presented with multisystem symptoms at an early age including developmental delay, ataxia, and seizures. No diagnosis was obtained till the age of 31 years, when genetic testing was reinitiated. The patient was diagnosed with a complete maternal mixed hetero/isodisomy of chromosome 16, with a homozygous pathogenic PMM2 variant (p.Phe119Leu) causing PMM2-CDG.A literature review revealed eight cases of uniparental disomy as an underlying cause of CDG, four of which are PMM2-CDG. CONCLUSION Since the incidence of homozygosity for PMM2 variants is rare, we suggest further investigations for every homozygous PMM2-CDG patient where the segregation does not fit. These investigations include testing for UPD or a deletion in one of the two alleles, as this will have an impact on recurrence risk in genetic counseling.
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Affiliation(s)
| | | | - Belén Pérez
- Center of Molecular Biology‐Severo OchoaUniversity Autonomous of Madrid, La Paz Institute for Health Research, Center for Biomedical Research on Rare DiseasesMadridSpain
| | | | - Susan A. Berry
- Division of Genetics and Metabolism, Department of PediatricsUniversity of Minnesota Medical SchoolMinneapolisMinnesotaUSA
| | - Kyriakie Sarafoglou
- Department of PediatricsUniversity of Minnesota Masonic Children's HospitalMinneapolisMinnesotaUSA
| | - Eva Morava
- Department of Clinical Genomics, and Department of Laboratory Medicine and PathologyMayo ClinicRochesterMinnesotaUSA
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31
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Doroftei B, Nemtanu L, Ilie OD, Simionescu G, Ivanov I, Anton E, Puiu M, Maftei R. In Vitro Fertilisation (IVF) Associated with Preimplantation Genetic Testing for Monogenic Diseases (PGT-M) in a Romanian Carrier Couple for Congenital Disorder of Glycosylation Type Ia (CDG-Ia): A Case Report. Genes (Basel) 2020; 11:genes11060697. [PMID: 32630370 PMCID: PMC7349484 DOI: 10.3390/genes11060697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Congenital disorder of glycosylation (CDG) is a severe morphogenic and metabolic disorder that affects all of the systems of organs and is caused by a mutation of the gene PMM2, having a mortality rate of 20% during the first months of life. Results: Here we report the outcome of an in vitro fertilisation (IVF) cycle associated with preimplantation genetic testing for monogenic diseases (PGT-M) in a Romanian carrier couple for CDG type Ia with distinct mutations of the PMM2 gene. The embryonic biopsy was performed on day five of the blastocyst stage for six embryos. The amplification of the whole genome had been realized by using the PicoPLEX WGA kit. Using the Array Comparative Genomic Hybridisation technique, we detected both euploid and aneuploid embryos. The identification of the PMM2 mutation on exon 5 and exon 6 was performed for the euploid embryos through Sanger Sequencing with specific primers on ABI 3500. Of the six embryos tested, only three were euploid. One had compound heterozygosity and the remaining two were simple heterozygotes. Conclusion: PGT-M should be strongly considered for optimising embryo selection in partners with single-gene mutations in order to prevent transmission to the offspring.
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Affiliation(s)
- Bogdan Doroftei
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Department of Mother and Child Medicine, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, no 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street, no 34, 700038 Iasi, Romania
| | - Loredana Nemtanu
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Department of Molecular Genetics, Faculty of Biology, University of “Alexandru Ioan Cuza” Carol I Avenue, 700505 Iasi, Romania
| | - Ovidiu-Dumitru Ilie
- Department of Research, Faculty of Biology, Alexandru Ioan Cuza University, Carol I Avenue, no 11, 700505 Iasi, Romania
- Correspondence:
| | - Gabriela Simionescu
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Department of Mother and Child Medicine, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, no 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street, no 34, 700038 Iasi, Romania
| | - Iuliu Ivanov
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Regional Oncology Institute Iasi, Department of Molecular Biology, General Henri Mathias Berthelot Street, no 2-4, 700483 Iasi, Romania
| | - Emil Anton
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Department of Mother and Child Medicine, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, no 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street, no 34, 700038 Iasi, Romania
| | - Maria Puiu
- Department of Microscopic Morphology, Faculty of Medicine, University of Medicine and Pharmacy “Victor Babeș”, Eftimie Murgu Square, no 2, 300041 Timișoara, Romania;
| | - Radu Maftei
- Origyn Fertility Center, Palace Street, no 3C, 70032 Iasi, Romania; (B.D.); (L.N.); (G.S.); (I.I.); (E.A.); (R.M.)
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street, no 34, 700038 Iasi, Romania
- Department of Morphofunctional Sciences, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, no 16, 700115 Iasi, Romania
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Ravell JC, Chauvin SD, He T, Lenardo M. An Update on XMEN Disease. J Clin Immunol 2020; 40:671-681. [PMID: 32451662 PMCID: PMC7369250 DOI: 10.1007/s10875-020-00790-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/07/2020] [Indexed: 12/23/2022]
Abstract
“X-linked immunodeficiency with magnesium defect, Epstein-Barr virus (EBV) infection, and neoplasia” (XMEN) disease is an inborn error of glycosylation and immunity caused by loss of function mutations in the magnesium transporter 1 (MAGT1) gene. It is a multisystem disease that strongly affects certain immune cells. MAGT1 is now confirmed as a non-catalytic subunit of the oligosaccharyltransferase complex and facilitates Asparagine (N)-linked glycosylation of specific substrates, making XMEN a congenital disorder of glycosylation manifesting as a combined immune deficiency. The clinical disease has variable expressivity and impaired glycosylation of key MAGT1-dependent glycoproteins in addition to Mg2+ abnormalities can explain some of the immune manifestations. NKG2D, an activating receptor critical for cytotoxic function against EBV, is poorly glycosylated and invariably decreased on CD8+ T cells and natural killer (NK) cells from XMEN patients. It is the best biomarker of the disease. The characterization of EBV-naïve XMEN patients has clarified features of the genetic disease that were previously attributed to EBV infection. Extra-immune manifestations, including hepatic and neurological abnormalities have recently been reported. EBV-associated lymphomas remain the main cause of severe morbidity. Unfortunately, treatment options to address the underlying mechanism of disease remain limited and Mg2+ supplementation has not proven successful. Here, we review the expanding clinical phenotype and recent advances in glycobiology that have increased our understanding of XMEN disease. We also propose updating XMEN to “X-linked MAGT1 deficiency with increased susceptibility to EBV-infection and N-linked glycosylation defect” in light of these novel findings.
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Affiliation(s)
- Juan C Ravell
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), Bethesda, MD, USA
| | - Samuel D Chauvin
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, DIR, National Institute of Allergy and Infectious Diseases (NIAID), Bethesda, MD, USA
| | - Tingyan He
- Department of Rheumatology and Immunology, Shenzhen Children's Hospital, Shenzhen, 518038, China.
| | - Michael Lenardo
- Molecular Development of the Immune System Section, Laboratory of Immune System Biology, and Clinical Genomics Program, DIR, National Institute of Allergy and Infectious Diseases (NIAID), Bethesda, MD, USA.
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AP1S1 missense mutations cause a congenital enteropathy via an epithelial barrier defect. Hum Genet 2020; 139:1247-1259. [PMID: 32306098 PMCID: PMC7497319 DOI: 10.1007/s00439-020-02168-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/10/2020] [Indexed: 12/16/2022]
Abstract
Congenital diarrheal disorders (CDD) comprise > 50 monogenic entities featuring chronic diarrhea of early-onset, including defects in nutrient and electrolyte absorption, enterocyte polarization, enteroendocrine cell differentiation, and epithelial integrity. Diarrhea is also a predominant symptom in many immunodeficiencies, congenital disorders of glycosylation, and in some defects of the vesicular sorting and transporting machinery. We set out to identify the etiology of an intractable diarrhea in 2 consanguineous families by whole-exome sequencing, and identified two novel AP1S1 mutations, c.269T>C (p.Leu90Pro) and c.346G>A (p.Glu116Lys). AP1S1 encodes the small subunit of the adaptor protein 1 complex (AP-1), which plays roles in clathrin coat-assembly and trafficking between trans-Golgi network, endosomes and the plasma membrane. An AP1S1 knock-out (KO) of a CaCo2 intestinal cell line was generated to characterize intestinal AP1S1 deficiency as well as identified mutations by stable expression in KO background. Morphology and prototype transporter protein distribution were comparable between parental and KO cells. We observed altered localization of tight-junction proteins ZO-1 and claudin 3, decreased transepithelial electrical resistance and an increased dextran permeability of the CaCo2-AP1S1-KO monolayer. In addition, lumen formation in 3D cultures of these cells was abnormal. Re-expression of wild-type AP1S1 in CaCo2-AP1S1-KO cells reverted these abnormalities, while expression of AP1S1 containing either missense mutation did not. Our data indicate that loss of AP1S1 function causes an intestinal epithelial barrier defect, and that AP1S1 mutations can cause a non-syndromic form of congenital diarrhea, whereas 2 reported truncating AP1S1 mutations caused MEDNIK syndrome, characterized by mental retardation, enteropathy, deafness, neuropathy, ichthyosis, and keratodermia.
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Takenaka Y, Sekiguchi K, Sekiya H, Ohno K, Sugie H, Matsumoto R. [Electrophysiological evidence of impaired neuromuscular junction in a case of phosphoglucomutase 1 deficiency manifesting fluctuating muscle weakness]. Rinsho Shinkeigaku 2020; 60:152-156. [PMID: 31956197 DOI: 10.5692/clinicalneurol.cn-001375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A 27 year-old Canadian man suffered from fluctuating muscle weakness in the past several years. The patient had a past history of intestinal bleeding, bifid uvula and hypothyroidism in his childhood. Repetitive nerve stimulation tests showed a decrement pattern in the left deltoid muscle. The single fiber electromyography of the left extensor digitorum muscle showed an increment of jitter. Both findings were improved by the edrophonium test. He was diagnosed as having phosphoglucomutase 1 (PGM1) deficiency, as the compound heterozygote mutation of the PGM1 gene was recognized in the whole-exome sequencing and the enzyme activity of PGM1 was defective in the biopsied muscle. Treatment with the galactose lead to improvement of the fluctuating muscle weakness and decremental pattern in the repetitive stimulation test. PGM1 deficiency should be listed in the differential diagnosis of the neuromuscular junction disorder, when the patient is seronegative for antibodies related with myasthenia gravis and shows symptoms or signs consistent with PGM1 deficiency.
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Affiliation(s)
- Yu Takenaka
- Division of Neurology, Kobe University Graduate School of Medicine
- Hyogo-Chuo National Hospital
| | - Kenji Sekiguchi
- Division of Neurology, Kobe University Graduate School of Medicine
| | - Hiroaki Sekiya
- Division of Neurology, Kobe University Graduate School of Medicine
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine
| | - Hideo Sugie
- Faculty of Health and Medical Sciences, Tokoha University
| | - Riki Matsumoto
- Division of Neurology, Kobe University Graduate School of Medicine
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Wang H, Li X, Wang X, Liu D, Zhang X, Cao W, Zheng Y, Guo Z, Li D, Xing W, Hou H, Wu L, Song M, Zhong Z, Wang Y, Tan X, Lauc G, Wang W. Next-Generation (Glycomic) Biomarkers for Cardiometabolic Health: A Community-Based Study of Immunoglobulin G N-Glycans in a Chinese Han Population. OMICS : A JOURNAL OF INTEGRATIVE BIOLOGY 2019; 23:649-659. [PMID: 31313980 DOI: 10.1089/omi.2019.0099] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cardiovascular disease is a common complex trait that calls for next-generation biomarkers for precision diagnostics and therapeutics. The most common type of post-translational protein modification involves glycosylation. Glycans participate in key intercellular and intracellular functions, such as protein quality control, cell adhesion, cell-cell recognition, signal transduction, cell proliferation, and cell differentiation. In this context, immunoglobulin G (IgG) N-glycans affect the anti-inflammatory and proinflammatory responses of IgG, and are associated with cardiometabolic risk factors such as aging, central obesity, dyslipidemia, and hyperglycemia. Yet, the role of such glycomic biomarkers requires evaluation in diverse world populations. We report here original observations on association of IgG N-glycan biosignatures with 15 cardiometabolic risk factors in a community-based cross-sectional study conducted in 701 Chinese Han participants. After controlling for age and sex, we found that the 16, 21, and 18 IgG N-glycan traits were significantly different in participants with and without metabolic syndrome, hypertriglyceridemic waist phenotype, or abdominal obesity, respectively. The canonical correlation analysis showed that IgG N-glycan profiles were significantly associated with cardiometabolic risk factors (r = 0.469, p < 0.001). Classification models based on IgG N-glycan traits were able to differentiate participants with (1) metabolic syndrome, (2) hypertriglyceridemic waist phenotype, or (3) abdominal obesity from controls, with an area under receiver operating characteristic curves (AUC) of 0.632 (95% confidence interval [CI], 0.574-0.691, p < 0.001), 0.659 (95% CI, 0.587-0.730, p < 0.001), and 0.610 (95% CI, 0.565-0.656, p < 0.001), respectively. These new data suggest that IgG N-glycans may play an important role in cardiometabolic disease pathogenesis by regulating the proinflammatory or anti-inflammatory responses of IgG. Looking into the future, IgG N-glycan biosignatures warrant further research in other world population samples with a view to applications in clinical cardiology and public health practice.
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Affiliation(s)
- Hao Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Xingang Li
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Xueqing Wang
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Di Liu
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Xiaoyu Zhang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Weijie Cao
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Yulu Zheng
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Zheng Guo
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Dong Li
- School of Public Health, Shandong First Medical University, Taian, China
| | - Weijia Xing
- School of Public Health, Shandong First Medical University, Taian, China
| | - Haifeng Hou
- School of Public Health, Shandong First Medical University, Taian, China
| | - Lijuan Wu
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Manshu Song
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Zhaohua Zhong
- Department of Microbiology, Harbin Medical University, Harbin, China
- Heilongjiang Key Laboratory of Immunity and Infection, Harbin, China
| | - Youxin Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Xuerui Tan
- The First Affiliated Hospital of Shantou University Medical College, Shantou University Medical College, Shantou, China
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, BIOCentar, Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Wei Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
- School of Public Health, Shandong First Medical University, Taian, China
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O'Flaherty R, Muniyappa M, Walsh I, Stöckmann H, Hilliard M, Hutson R, Saldova R, Rudd PM. A Robust and Versatile Automated Glycoanalytical Technology for Serum Antibodies and Acute Phase Proteins: Ovarian Cancer Case Study. Mol Cell Proteomics 2019; 18:2191-2206. [PMID: 31471495 PMCID: PMC6823853 DOI: 10.1074/mcp.ra119.001531] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/11/2019] [Indexed: 11/06/2022] Open
Abstract
The direct association of the genome, transcriptome, metabolome, lipidome and proteome with the serum glycome has revealed systems of interconnected cellular pathways. The exact roles of individual glycoproteomes in the context of disease have yet to be elucidated. In a move toward personalized medicine, it is now becoming critical to understand disease pathogenesis, and the traits, stages, phenotypes and molecular features that accompany it, as the disruption of a whole system. To this end, we have developed an innovative technology on an automated platform, "GlycoSeqCap," which combines N-glycosylation data from six glycoproteins using a single source of human serum. Specifically, we multiplexed and optimized a successive serial capture and glycoanalysis of six purified glycoproteins, immunoglobulin G (IgG), immunoglobulin M (IgM), immunoglobulin A (IgA), transferrin (Trf), haptoglobin (Hpt) and alpha-1-antitrypsin (A1AT), from 50 μl of human serum. We provide the most comprehensive and in-depth glycan analysis of individual glycoproteins in a single source of human serum to date. To demonstrate the technological application in the context of a disease model, we performed a pilot study in an ovarian cancer cohort (n = 34) using discrimination and classification analyses to identify aberrant glycosylation. In our sample cohort, we exhibit improved selectivity and specificity over the currently used biomarker for ovarian cancer, CA125, for early stage ovarian cancer. This technology will establish a new state-of-the-art strategy for the characterization of individual serum glycoproteomes as a diagnostic and monitoring tool which represents a major step toward understanding the changes that take place during disease.
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Affiliation(s)
- Róisín O'Flaherty
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099
| | - Mohankumar Muniyappa
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099
| | - Ian Walsh
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (ASTAR), 20 Biopolis Way, #06-01 Centros, Singapore 138668, Singapore
| | - Henning Stöckmann
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099
| | - Mark Hilliard
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099
| | - Richard Hutson
- Cancer Research UK Clinical Centre at Leeds, St James' University Hospital, Leeds LS9 7TF, UK.
| | - Radka Saldova
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099; UCD School of Medicine, College of Health and Agricultural Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Pauline M Rudd
- NIBRT GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Dublin 4, Ireland, A94X099
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Ismail IT, Showalter MR, Fiehn O. Inborn Errors of Metabolism in the Era of Untargeted Metabolomics and Lipidomics. Metabolites 2019; 9:metabo9100242. [PMID: 31640247 PMCID: PMC6835511 DOI: 10.3390/metabo9100242] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 12/30/2022] Open
Abstract
Inborn errors of metabolism (IEMs) are a group of inherited diseases with variable incidences. IEMs are caused by disrupting enzyme activities in specific metabolic pathways by genetic mutations, either directly or indirectly by cofactor deficiencies, causing altered levels of compounds associated with these pathways. While IEMs may present with multiple overlapping symptoms and metabolites, early and accurate diagnosis of IEMs is critical for the long-term health of affected subjects. The prevalence of IEMs differs between countries, likely because different IEM classifications and IEM screening methods are used. Currently, newborn screening programs exclusively use targeted metabolic assays that focus on limited panels of compounds for selected IEM diseases. Such targeted approaches face the problem of false negative and false positive diagnoses that could be overcome if metabolic screening adopted analyses of a broader range of analytes. Hence, we here review the prospects of using untargeted metabolomics for IEM screening. Untargeted metabolomics and lipidomics do not rely on predefined target lists and can detect as many metabolites as possible in a sample, allowing to screen for many metabolic pathways simultaneously. Examples are given for nontargeted analyses of IEMs, and prospects and limitations of different metabolomics methods are discussed. We conclude that dedicated studies are needed to compare accuracy and robustness of targeted and untargeted methods with respect to widening the scope of IEM diagnostics.
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Affiliation(s)
- Israa T Ismail
- National Liver Institute, Menoufia University, Shebeen El Kom 55955, Egypt.
- NIH West Coast Metabolomics Center, University of California Davis, Davis, CA 95616, USA.
| | - Megan R Showalter
- NIH West Coast Metabolomics Center, University of California Davis, Davis, CA 95616, USA.
| | - Oliver Fiehn
- NIH West Coast Metabolomics Center, University of California Davis, Davis, CA 95616, USA.
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Relating glycoprotein structural heterogeneity to function - insights from native mass spectrometry. Curr Opin Struct Biol 2019; 58:241-248. [PMID: 31326232 PMCID: PMC7104348 DOI: 10.1016/j.sbi.2019.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 01/08/2023]
Abstract
Glycosylation is the most complex and prevalent protein modification that influences attributes ranging from cellular localization and signaling to half-life and proteolysis. Glycoconjugates are fundamental for cellular function and alterations in their structure are often observed in pathological states. Most biotherapeutic proteins are glycosylated, which influences drug safety and efficacy. Therefore, the ability to characterize glycoproteins is important in all areas of biomolecular and medicinal research. Here we discuss recent advances in native mass spectrometry that have significantly improved our ability to characterize heterogeneous glycoproteins and to relate glycan structure to protein function.
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39
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Plant-derived medicines for neuropathies: a comprehensive review of clinical evidence. Rev Neurosci 2019; 30:671-684. [DOI: 10.1515/revneuro-2018-0097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022]
Abstract
Abstract
Neuropathy is defined as the damage to the peripheral or central nervous system accompanied by pain, numbness, or muscle weakness, which can be due to congenital diseases or environmental factors such as diabetes, trauma, or viral infections. As current treatments are not sufficiently able to control the disease, studies focusing on the identification and discovery of new therapeutic agents are necessary. Natural products have been used for a long time for the management of different neurological problems including neuropathies. The aim of the present study is to review the current clinical data on the beneficial effects of medicinal plants in neuropathy. Electronic databases including PubMed, Scopus, and Cochrane Library were searched with the keywords ‘neuropathy’ in the title/abstract and ‘plant’ or ‘extract’ or ‘herb’ in the whole text from inception until August 2017. From a total of 3679 papers, 22 studies were finally included. Medicinal plants were evaluated clinically in several types of neuropathy, including diabetic neuropathy, chemotherapy-induced peripheral neuropathy, carpal tunnel syndrome, and HIV-associated neuropathy. Some studies reported the improvement in pain, nerve function, nerve conduction velocity, and quality of life. Cannabis sativa (hemp), Linum usitatissimum (linseed oil), capsaicin, and a polyherbal Japanese formulation called Goshajinkigan had the most evidence regarding their clinical efficacy. Other investigated herbal medicines in neuropathy, such as Matricaria chamomilla (chamomile), Curcuma longa (turmeric), and Citrullus colocynthis (colocynth), had only one clinical trial. Thus, future studies are necessary to confirm the safety and efficacy of such natural medicines as a complementary or alternative treatment for neuropathy.
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40
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Altassan R, Péanne R, Jaeken J, Barone R, Bidet M, Borgel D, Brasil S, Cassiman D, Cechova A, Coman D, Corral J, Correia J, de la Morena-Barrio ME, de Lonlay P, Dos Reis V, Ferreira CR, Fiumara A, Francisco R, Freeze H, Funke S, Gardeitchik T, Gert M, Girad M, Giros M, Grünewald S, Hernández-Caselles T, Honzik T, Hutter M, Krasnewich D, Lam C, Lee J, Lefeber D, Marques-de-Silva D, Martinez AF, Moravej H, Õunap K, Pascoal C, Pascreau T, Patterson M, Quelhas D, Raymond K, Sarkhail P, Schiff M, Seroczyńska M, Serrano M, Seta N, Sykut-Cegielska J, Thiel C, Tort F, Vals MA, Videira P, Witters P, Zeevaert R, Morava E. International clinical guidelines for the management of phosphomannomutase 2-congenital disorders of glycosylation: Diagnosis, treatment and follow up. J Inherit Metab Dis 2019; 42:5-28. [PMID: 30740725 DOI: 10.1002/jimd.12024] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Phosphomannomutase 2 (PMM2-CDG) is the most common congenital disorder of N-glycosylation and is caused by a deficient PMM2 activity. The clinical presentation and the onset of PMM2-CDG vary among affected individuals ranging from a severe antenatal presentation with multisystem involvement to mild adulthood presentation limited to minor neurological involvement. Management of affected patients requires a multidisciplinary approach. In this article, a systematic review of the literature on PMM2-CDG was conducted by a group of international experts in different aspects of CDG. Our managment guidelines were initiated based on the available evidence-based data and experts' opinions. This guideline mainly addresses the clinical evaluation of each system/organ involved in PMM2-CDG, and the recommended management approach. It is the first systematic review of current practices in PMM2-CDG and the first guidelines aiming at establishing a practical approach to the recognition, diagnosis and management of PMM2-CDG patients.
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Affiliation(s)
- Ruqaiah Altassan
- Department of Medical Genetic, Montréal Children's Hospital, Montréal, Québec, Canada
- Department of Medical Genetic, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Romain Péanne
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- LIA GLYCOLAB4CDG (International Associated Laboratory "Laboratory for the Research on Congenital Disorders of Glycosylation-from Cellular Mechanisms to Cure", France/ Belgium
| | - Jaak Jaeken
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Rita Barone
- Child Neurology and Psychiatry Unit, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Muad Bidet
- Department of Paediatric Endocrinology, Gynaecology, and Diabetology, AP-HP, Necker-Enfants Malades Hospital, IMAGINE Institute affiliate, Paris, France
| | - Delphine Borgel
- INSERM U1176, Université Paris-Sud, CHU de Bicêtre, Le Kremlin Bicêtre, France
| | - Sandra Brasil
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
- Professionals and Patient Associations International Network (CDG & Allies-PPAIN), Departament o Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - David Cassiman
- Department of Gastroenterology-Hepatology and Metabolic Center, University Hospitals Leuven, Leuven, Belgium
| | - Anna Cechova
- Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - David Coman
- Department of Metabolic Medicine, The Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
- Schools of Medicine, University of Queensland Brisbane, Griffith University Gold Coast, Southport, Queensland, Australia
| | - Javier Corral
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CIBERER, Murcia, Spain
| | - Joana Correia
- Centro de Referência Doenças Hereditárias do Metabolismo - Centro Hospitalar do Porto, Porto, Portugal
| | - María Eugenia de la Morena-Barrio
- Servicio de Hematologíay Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CIBERER, Murcia, Spain
| | - Pascale de Lonlay
- Reference Center of Inherited Metabolic Diseases, University Paris Descartes, Hospital Necker Enfants Malades, Paris, France
| | - Vanessa Dos Reis
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Carlos R Ferreira
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
- Division of Genetics and Metabolism, Children's National Health System, Washington, District of Columbia
| | - Agata Fiumara
- Child Neurology and Psychiatry Unit, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Rita Francisco
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
- Professionals and Patient Associations International Network (CDG & Allies-PPAIN), Departament o Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Caparica, Caparica, Portugal
| | - Hudson Freeze
- Sanford Children's Health Research Center, Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, California
| | - Simone Funke
- Department of Obstetrics and Gynecology, Division of Neonatology, University of Pécs, Pecs, Hungary
| | - Thatjana Gardeitchik
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Matthijs Gert
- LIA GLYCOLAB4CDG (International Associated Laboratory "Laboratory for the Research on Congenital Disorders of Glycosylation-from Cellular Mechanisms to Cure", France/ Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Muriel Girad
- AP-HP, Necker University Hospital, Hepatology and Gastroenterology Unit, French National Reference Centre for Biliary Atresia and Genetic Cholestasis, Paris, France
- Hepatologie prdiatrique department, Paris Descartes University, Paris, France
| | - Marisa Giros
- Secció d'Errors Congènits del Metabolisme -IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Stephanie Grünewald
- Metabolic Unit, Great Ormond Street Hospital and Institute of Child Health, University College London, NHS Trust, London, UK
| | - Trinidad Hernández-Caselles
- Departamento de Bioquímica, Biología Molecular B e Inmunología, Faculty of Medicine, IMIB-University of Murcia, Murcia, Spain
| | - Tomas Honzik
- Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Marlen Hutter
- Center for Child and Adolescent Medicine, Department, University of Heidelberg, Heidelberg, Germany
| | - Donna Krasnewich
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Christina Lam
- Division of Genetic Medicine, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington
| | - Joy Lee
- Department of Metabolic Medicine, The Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Dirk Lefeber
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dorinda Marques-de-Silva
- Professionals and Patient Associations International Network (CDG & Allies-PPAIN), Departament o Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Caparica, Caparica, Portugal
| | - Antonio F Martinez
- Genetics and Molecular Medicine and Rare Disease Paediatric Unit, Sant Joan de Déu Hospital, Barcelona, Spain
| | - Hossein Moravej
- Neonatal Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Katrin Õunap
- Department of Pediatrics, University of Tartu, Tartu, Estonia
- Department of Genetics, United Laboratories, Tartu University Hospital, Tartu, Estonia
| | - Carlota Pascoal
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
- Professionals and Patient Associations International Network (CDG & Allies-PPAIN), Departament o Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Tiffany Pascreau
- AP-HP, Service d'Hématologie Biologique, Hôpital R. Debré, Paris, France
| | - Marc Patterson
- Division of Child and Adolescent Neurology, Department of Neurology, Mayo Clinic Children's Center, Rochester, New York
- Division of Child and Adolescent Neurology, Department of Pediatrics, Mayo Clinic Children's Center, Rochester, New York
- Division of Child and Adolescent Neurology, Department of Medical Genetics, Mayo Clinic Children's Center, Rochester, New York
| | - Dulce Quelhas
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CIBERER, Murcia, Spain
- Centro de Genética Médica Doutor Jacinto Magalhães, Unidade de Bioquímica Genética, Porto, Portugal
| | - Kimiyo Raymond
- Biochemical Genetics Laboratory, Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Peymaneh Sarkhail
- Metabolic and Genetic department, Sarem Woman's Hospital, Tehrān, Iran
| | - Manuel Schiff
- Neurologie pédiatrique et maladies métaboliques, (C. Farnoux) - Pôle de pédiatrie médicale CHU, Hôpital Robert Debré, Paris, France
| | - Małgorzata Seroczyńska
- Departamento de Bioquímica, Biología Molecular B e Inmunología, Faculty of Medicine, IMIB-University of Murcia, Murcia, Spain
| | - Mercedes Serrano
- Neurology Department, Hospital Sant Joan de Déu, U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain
| | - Nathalie Seta
- AP-HP, Bichat Hospital, Université Paris Descartes, Paris, France
| | - Jolanta Sykut-Cegielska
- Department of Inborn Errors of Metabolism and Paediatrics, the Institute of Mother and Child, Warsaw, Poland
| | - Christian Thiel
- Center for Child and Adolescent Medicine, Department, University of Heidelberg, Heidelberg, Germany
| | - Federic Tort
- Secció d'Errors Congènits del Metabolisme -IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Mari-Anne Vals
- Department of Clinical Genetics, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Paula Videira
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa Caparica, Caparica, Portugal
| | - Peter Witters
- Department of Paediatrics and Metabolic Center, University Hospitals Leuven, Leuven, Belgium
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Renate Zeevaert
- Department of Paediatric Endocrinology and Diabetology, Jessa Hospital, Hasselt, Belgium
| | - Eva Morava
- Department of Clinical Genomics, Mayo Clinic, Rochester, New York
- Department of Pediatrics, Tulane University, New Orleans, Louisiana
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ALG9 Associated Gillessen-Kaesbach–Nishimura Syndrome (GIKANIS): An Uncommon Aetiology of Enlarged Foetal Kidneys. JOURNAL OF FETAL MEDICINE 2018. [DOI: 10.1007/s40556-018-0183-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Arnold GL. Inborn errors of metabolism in the 21 st century: past to present. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:467. [PMID: 30740398 DOI: 10.21037/atm.2018.11.36] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The 21st century is an exciting time to be in the field of metabolic medicine. As with many fields, one of the keys to anticipating the future is to understand the past. The term "inborn error of metabolism" was first coined in 1908 by Sir Archibald Garrod, in reference to four disorders (alkaptonuria, pentosuria, cystinuria and albinism). The first (and still most definitive) textbook on the subject, "The Metabolic Basis of Inherited Disease" was initially published in 1960 and covered 80 disorders in 1,477 pages. After the eighth edition of this text became unwieldy at 6,338 pages in 4 volumes covering more than 1,000 disorders, the book was changed to an online reference text with 259 chapters and is still growing. Current newborn screening on a few dried blood spots on filter paper identifies more than 1 in 2,000 newborns as having a metabolic disorder. The availability of metabolomic and genomic analyses is resulting in the diagnosis of many new disorders. Enzyme replacement therapy (ERT) has provided treatments for previously untreatable metabolic disorders, and the promise of gene therapy on the near horizon will certainly revolutionize the field.
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Affiliation(s)
- Georgianne L Arnold
- Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Stroke-Like Episodes and Cerebellar Syndrome in Phosphomannomutase Deficiency (PMM2-CDG): Evidence for Hypoglycosylation-Driven Channelopathy. Int J Mol Sci 2018; 19:ijms19020619. [PMID: 29470411 PMCID: PMC5855841 DOI: 10.3390/ijms19020619] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/15/2018] [Accepted: 02/18/2018] [Indexed: 02/01/2023] Open
Abstract
Stroke-like episodes (SLE) occur in phosphomannomutase deficiency (PMM2-CDG), and may complicate the course of channelopathies related to Familial Hemiplegic Migraine (FHM) caused by mutations in CACNA1A (encoding CaV2.1 channel). The underlying pathomechanisms are unknown. We analyze clinical variables to detect risk factors for SLE in a series of 43 PMM2-CDG patients. We explore the hypothesis of abnormal CaV2.1 function due to aberrant N-glycosylation as a potential novel pathomechanism of SLE and ataxia in PMM2-CDG by using whole-cell patch-clamp, N-glycosylation blockade and mutagenesis. Nine SLE were identified. Neuroimages showed no signs of stroke. Comparison of characteristics between SLE positive versus negative patients' group showed no differences. Acute and chronic phenotypes of patients with PMM2-CDG or CACNA1A channelopathies show similarities. Hypoglycosylation of both CaV2.1 subunits (α1A and α2α) induced gain-of-function effects on channel gating that mirrored those reported for pathogenic CACNA1A mutations linked to FHM and ataxia. Unoccupied N-glycosylation site N283 at α1A contributes to a gain-of-function by lessening CaV2.1 inactivation. Hypoglycosylation of the α₂δ subunit also participates in the gain-of-function effect by promoting voltage-dependent opening of the CaV2.1 channel. CaV2.1 hypoglycosylation may cause ataxia and SLEs in PMM2-CDG patients. Aberrant CaV2.1 N-glycosylation as a novel pathomechanism in PMM2-CDG opens new therapeutic possibilities.
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Choi EK, Nguyen TT, Gupta N, Iwase S, Seo YA. Functional analysis of SLC39A8 mutations and their implications for manganese deficiency and mitochondrial disorders. Sci Rep 2018; 8:3163. [PMID: 29453449 PMCID: PMC5816659 DOI: 10.1038/s41598-018-21464-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/05/2018] [Indexed: 11/19/2022] Open
Abstract
SLC39A8 encodes ZIP8, a divalent metal ion transporter. Mutations in the SLC39A8 gene are associated with congenital disorder of glycosylation type II and Leigh syndrome. Notably, affected patients with both disorders exhibited severe manganese (Mn) deficiency. The cellular function of human SLC39A8 (hSLC39A8) and the mechanisms by which mutations in this protein lead to human diseases are unclear. Herein, we show that hSLC39A8 mediates 54Mn uptake by the cells, and its expression is regulated by Mn. While expression of wild-type hSLC39A8 increased 54Mn uptake activity, disease-associated mutations abrogated the ability of the transporter to mediate Mn uptake into the cells, thereby providing a causal link to severe Mn deficiency. All mutants failed to localize on the cell surface and were retained within the endoplasmic reticulum. Interestingly, expression of hSLC39A8 mutants of both CDG type II and Leigh syndrome reduced mitochondrial 54Mn levels and activity of Mn-dependent mitochondrial superoxide dismutase MnSOD, and in turn increased oxidative stress. The expression of wild-type hSLC39A8, but not the disease-associated mutants, promoted mitochondrial functions. Moreover, loss of function analyses further corroborate hSLC39A8's critical role in mediating Mn uptake and mitochondrial function. Our results provide a potential pathogenic mechanism of diseases that are associated with hSLC39A8 mutations.
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Affiliation(s)
- Eun-Kyung Choi
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Trang-Tiffany Nguyen
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Neil Gupta
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Shigeki Iwase
- Department of Human Genetics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Young Ah Seo
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA.
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Stewart SE, Menzies SA, Popa SJ, Savinykh N, Petrunkina Harrison A, Lehner PJ, Moreau K. A genome-wide CRISPR screen reconciles the role of N-linked glycosylation in galectin-3 transport to the cell surface. J Cell Sci 2017; 130:3234-3247. [PMID: 28775154 DOI: 10.1242/jcs.206425] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 07/17/2017] [Indexed: 01/02/2023] Open
Abstract
Galectins are a family of lectin binding proteins expressed both intracellularly and extracellularly. Galectin-3 (Gal-3, also known as LGALS3) is expressed at the cell surface; however, Gal-3 lacks a signal sequence, and the mechanism of Gal-3 transport to the cell surface remains poorly understood. Here, using a genome-wide CRISPR/Cas9 forward genetic screen for regulators of Gal-3 cell surface localization, we identified genes encoding glycoproteins, enzymes involved in N-linked glycosylation, regulators of ER-Golgi trafficking and proteins involved in immunity. The results of this screening approach led us to address the controversial role of N-linked glycosylation in the transport of Gal-3 to the cell surface. We find that N-linked glycoprotein maturation is not required for Gal-3 transport from the cytosol to the extracellular space, but is important for cell surface binding. Additionally, secreted Gal-3 is predominantly free and not packaged into extracellular vesicles. These data support a secretion pathway independent of N-linked glycoproteins and extracellular vesicles.
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Affiliation(s)
- Sarah E Stewart
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Sam A Menzies
- Department of Medicine, Cambridge Institute for Medical Research, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0XY, UK
| | - Stephanie J Popa
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Natalia Savinykh
- NIHR Cambridge BRC Cell Phenotyping Hub, Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Anna Petrunkina Harrison
- NIHR Cambridge BRC Cell Phenotyping Hub, Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Paul J Lehner
- Department of Medicine, Cambridge Institute for Medical Research, Cambridge Biomedical Campus, Hills Road, Cambridge, CB2 0XY, UK
| | - Kevin Moreau
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK
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Adua E, Russell A, Roberts P, Wang Y, Song M, Wang W. Innovation Analysis on Postgenomic Biomarkers: Glycomics for Chronic Diseases. ACTA ACUST UNITED AC 2017; 21:183-196. [DOI: 10.1089/omi.2017.0035] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Eric Adua
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Alyce Russell
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Peter Roberts
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Youxin Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Manshu Song
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Wei Wang
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
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The rs4285184 polymorphism of the MGAT1 gene as a risk factor for obesity in the Mexican population. Med Clin (Barc) 2017; 148:149-152. [PMID: 27871764 DOI: 10.1016/j.medcli.2016.07.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 07/22/2016] [Accepted: 07/24/2016] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Obesity is a factor that contributes to the morbidity of certain diseases and to worldwide mortality. MGAT1 is a glycosyltransferase involved in the synthesis of protein-bound and lipid-bound oligosaccharides and its polymorphisms are possibly involved in the etiology of obesity. We investigated the association of the rs4285184 polymorphism of the MGAT1 gene with obesity in adults in the State of Colima, Mexico. METHODS A case-control study was conducted that included 244 subjects. All of them were grouped according to their percentage of body fat, determined through bioelectrical impedance, and they were genotyped for the rs4285184 polymorphism of the MGAT1 gene through PCR-RFLP. The results were analyzed for their association with the percentage of body fat. RESULTS The G allele had a frequency of 49.19 and 38.75% for the cases and controls, respectively (P=.020) (OR 1.53; 95% CI 1.068-2.193). The frequency of the A/G+G/G genotype was 75% in the obese patients, which was significantly higher compared with the 57.5% of the control group (P=.004) (OR 2.217; 95% CI 1.287-3.821). CONCLUSIONS The presence of the rs4285184 polymorphism of the MGAT1 gene increased the risk for developing body fat associated with obesity in the Mexican population.
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Sakai W, Yoshikawa Y, Tokinaga Y, Yamakage M. Anesthetic management of a child with phosphomannomutase-2 congenital disorder of glycosylation (PMM2-CDG). JA Clin Rep 2017; 3:8. [PMID: 29492447 PMCID: PMC5813674 DOI: 10.1186/s40981-017-0080-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 02/02/2017] [Indexed: 11/23/2022] Open
Abstract
Background Glycosylation is one of the major posttranslational modifications of proteins and it is essential for proteins to obtain normal biological functions. Congenital disorders of glycosylation (CDGs) are very rare genetic disorders that lack enzymes needed for glycosylation. Phosphomannomutase-2 (PMM2)-CDG is the most common type of CDG. CDGs can cause a wide variety of clinical symptoms in almost every organ system. Muscular hypotonia is often present in patients with CDGs and is one of the most notable problems for anesthetic management because the susceptibility to nondepolarizing neuromuscular blocking agents (NMBAs) in patients with CDGs is unknown. Case presentation The patient was a 17-month-old boy who weighed 6.5 kg and was 71 cm tall. He presented for strabismus surgery. He had muscular hypotonia, mental retardation, hepatic dysfunction, mild cerebellar hypoplasia, and some dysmorphic features including inverted nipples and abnormal subcutaneous fat distribution of the hips. Gene analysis revealed a compound heterozygous mutation in the gene encoding PMM2 and the patient was diagnosed as having PMM2-CDG. General anesthesia was performed with sevoflurane, nitrous oxide, and rocuronium. Neuromuscular monitoring was performed during anesthesia using train-of-four (TOF)-Watch® (MSD, Japan). As postoperative analgesia, the surgeon performed sub-Tenon’s anesthesia. We did not use any intravenous analgesic. After completion of the operation, residual rocuronium was competed by administration of sugammadex. The patient gained consciousness and spontaneous breathing was established shortly thereafter, and the trachea was smoothly extubated. He was transported to an inpatient ward and was discharged to his home the next day without any complication. Conclusions We performed safe anesthetic management in a 17-month-old boy with PMM2-CDG using rocuronium under neuromuscular monitoring. A patient with PMM2-CDG may show nearly normal susceptibility to nondepolarizing NMBAs.
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Affiliation(s)
- Wataru Sakai
- Department of Anesthesiology, Sapporo Medical University School of Medicine, West16, South1, Chuouku, Sapporo, Hokkaido Japan
| | - Yusuke Yoshikawa
- Department of Anesthesiology, Sapporo Medical University School of Medicine, West16, South1, Chuouku, Sapporo, Hokkaido Japan
| | - Yasuyuki Tokinaga
- Department of Anesthesiology, Sapporo Medical University School of Medicine, West16, South1, Chuouku, Sapporo, Hokkaido Japan
| | - Michiaki Yamakage
- Department of Anesthesiology, Sapporo Medical University School of Medicine, West16, South1, Chuouku, Sapporo, Hokkaido Japan
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Harshman LA, Ng BG, Freeze HH, Trapane P, Dolezal A, Brophy PD, Brumbaugh JE. Congenital nephrotic syndrome in an infant with ALG1-congenital disorder of glycosylation. Pediatr Int 2016; 58:785-8. [PMID: 27325525 PMCID: PMC4996748 DOI: 10.1111/ped.12988] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 05/28/2015] [Accepted: 02/29/2016] [Indexed: 01/18/2023]
Abstract
Congenital nephrotic syndrome (NS) in the newborn is most frequently related to mutations in genes specific for structural integrity of the glomerular basement membrane and associated filtration structures within the kidney, resulting in massive leakage of plasma proteins into the urine. Occurrence of congenital NS in a multi-system syndrome is less common. We describe the case of an infant with deteriorating neurological status, seizures, edema, and proteinuria who was found to have a mutation in gene ALG1 and a renal biopsy consistent with congenital NS. Furthermore, we briefly review rare existing case reports documenting congenital NS in patients with mutations in ALG1, and treatment strategies, including novel use of peritoneal dialysis.
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Affiliation(s)
- Lyndsay A Harshman
- Division of Pediatric Nephrology, Stead Family Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa, USA
| | - Bobby G Ng
- Human Genetics Program Sanford Burnham Prebys Medical Discovery Institute, Sanford Children's Health Research Center, La Jolla, CA, USA
| | - Hudson H Freeze
- Human Genetics Program Sanford Burnham Prebys Medical Discovery Institute, Sanford Children's Health Research Center, La Jolla, CA, USA
| | - Pamela Trapane
- Division of Medical Genetics, Stead Family Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa, USA
| | - Anna Dolezal
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Patrick D Brophy
- Division of Pediatric Nephrology, Stead Family Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa, USA
| | - Jane E Brumbaugh
- Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa, USA
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Pai PJ, Hu Y, Lam H. Direct glycan structure determination of intact N-linked glycopeptides by low-energy collision-induced dissociation tandem mass spectrometry and predicted spectral library searching. Anal Chim Acta 2016; 934:152-62. [DOI: 10.1016/j.aca.2016.05.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/24/2016] [Accepted: 05/30/2016] [Indexed: 11/24/2022]
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