ArticleClinical chemistry2016
A Novel N-Tetrasaccharide in Patients with Congenital Disorders of Glycosylation, Including Asparagine-Linked Glycosylation Protein 1, Phosphomannomutase 2, and Mannose Phosphate Isomerase Deficiencies.
Article in Clinical chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
34 citing papers in PubMed, 63 citations in OpenAlex.
- Glycoproteomics and Functional Characterization of Novel Variants in Siblings with ALG1-CDG.Biomolecules · 2026Article
- Integrated glycoproteomics reveals site-specific N-glycosylation defects in phosphomannomutase two congenital disorder of glycosylation.The Journal of biological chemistry · 2026Article
- Asparagine-linked glycosylation protein 1 (ALG1) promotes aggressive phenotypes of lung adenocarcinoma cells, A549, via modulating N-linked glycosylation and ER-Stress.Glycoconjugate journal · 2025Article
- Insights into ALG3-CDG: A case study combining glycan profiling and genetic analysis.Molecular genetics and metabolism reports · 2025Article
- Advancement in Clinical Glycomics and Glycoproteomics for Congenital Disorders of Glycosylation: Progress and Challenges Ahead.Biomedicines · 2025Review
- Insights Into the Pathological Glycosylation Associated With COG6-CDG.Human mutation · 2025Article
- Diagnostic and Therapeutic Approaches in Congenital Disorders of Glycosylation.Handbook of experimental pharmacology · 2025Review
- Article
- Deficient glycan extension and endoplasmic reticulum stresses in ALG3-CDG.Journal of inherited metabolic disease · 2024Article
- Liposome-encapsulated mannose-1-phosphate therapy improves global N-glycosylation in different congenital disorders of glycosylation.Molecular genetics and metabolism · 2024Article
- Normal transferrin glycosylation does not rule out severe ALG1 deficiency.JIMD reports · 2024Article
- Case report: Novel genotype of ALG2-CDG and confirmation of the heptasaccharide glycan (NeuAc-Gal-GlcNAc-Man2-GlcNAc2) as a specific diagnostic biomarker.Frontiers in genetics · 2024Article
- Revisiting the immunopathology of congenital disorders of glycosylation: an updated review.Frontiers in immunology · 2024Review
- A liposomal carbohydrate vaccine, adjuvanted with an NKT cell agonist, induces rapid and enhanced immune responses and antibody class switching.Journal of nanobiotechnology · 2023Article
- The GlycoPaSER Prototype as a Real-Time N-Glycopeptide Identification Tool Based on the PaSER Parallel Computing Platform.International journal of molecular sciences · 2023Article
- Glycoproteomics in Cerebrospinal Fluid Reveals Brain-Specific Glycosylation Changes.International journal of molecular sciences · 2023Article
- A 6-Month-Old Infant with Severe Failure to Thrive during COVID-19 Pandemic.Clinical chemistry · 2022Article
- The hexosamine pathway and coat complex II promote malignant adaptation to nutrient scarcity.Life science alliance · 2022Article
- Synergistic use of glycomics and single-molecule molecular inversion probes for identification of congenital disorders of glycosylation type-1.Journal of inherited metabolic disease · 2022Article
- Evaluation of Cell Models to Study Monocyte Functions in PMM2 Congenital Disorders of Glycosylation.Frontiers in immunology · 2022Article
Corrections and comments
- Commented on by
Authors and funding
17 authors at 8 institutions in 2 countries.
Funding
Abstract
backgroundPrimary deficiencies in mannosylation of N-glycans are seen in a majority of patients with congenital disorders of glycosylation (CDG). We report the discovery of a series of novel N-glycans in sera, plasma, and cultured skin fibroblasts from patients with CDG having deficient mannosylation.
methodWe used LC-MS/MS and MALDI-TOF-MS analysis to identify and quantify a novel N-linked tetrasaccharide linked to the protein core, an N-tetrasaccharide (Neu5Acα2,6Galβ1,4-GlcNAcβ1,4GlcNAc) in plasma, serum glycoproteins, and a fibroblast lysate from patients with CDG caused by ALG1 [ALG1 (asparagine-linked glycosylation protein 1), chitobiosyldiphosphodolichol β-mannosyltransferase], PMM2 (phosphomannomutase 2), and MPI (mannose phosphate isomerase).
resultsGlycoproteins in sera, plasma, or cell lysate from ALG1-CDG, PMM2-CDG, and MPI-CDG patients had substantially more N-tetrasaccharide than unaffected controls. We observed a >80% decline in relative concentrations of the N-tetrasaccharide in MPI-CDG plasma after mannose therapy in 1 patient and in ALG1-CDG fibroblasts in vitro supplemented with mannose.
conclusionsThis novel N-tetrasaccharide could serve as a diagnostic marker of ALG1-, PMM2-, or MPI-CDG for screening of these 3 common CDG subtypes that comprise >70% of CDG type I patients. Its quantification by LC-MS/MS may be useful for monitoring therapeutic efficacy of mannose. The discovery of these small N-glycans also indicates the presence of an alternative pathway in N-glycosylation not recognized previously, but its biological significance remains to be studied.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.