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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2021-2022. MASS SPECTROMETRY REVIEWS 2024. [PMID: 38925550 DOI: 10.1002/mas.21873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/05/2024] [Accepted: 02/12/2024] [Indexed: 06/28/2024]
Abstract
The use of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well-established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022. As with previous review, this review also includes a few papers that describe methods appropriate to analysis by MALDI, such as sample preparation, even though the ionization method is not MALDI. The review follows the same format as previous reviews. It is divided into three sections: (1) general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, quantification and the use of computer software for structural identification. (2) Applications to various structural types such as oligo- and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals, and (3) other general areas such as medicine, industrial processes, natural products and glycan synthesis where MALDI is extensively used. Much of the material relating to applications is presented in tabular form. MALDI is still an ideal technique for carbohydrate analysis, particularly in its ability to produce single ions from each analyte and advancements in the technique and range of applications show little sign of diminishing.
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Madan-Khetarpal S, He M, Wongkittichote P, Dobrowolski SF. Congenital Disorder of Glycosylation in a Child with Macrosomia. Clin Chem 2023; 69:1432-1434. [PMID: 38037438 DOI: 10.1093/clinchem/hvad166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/19/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Suneeta Madan-Khetarpal
- Division of Genetics and Genomics, Children's Hospital of Pittsburgh, Pittsburgh, PA, United States
| | - Maio He
- Metabolic and Advanced Diagnostics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Parith Wongkittichote
- Department of Pathology and Laboratory Medicine, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Steven F Dobrowolski
- Department of Pathology, University of Pittsburgh, School of Medicine, Pittsburgh, PA, United States
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Okamoto N, Ohto T, Enokizono T, Wada Y, Kohmoto T, Imoto I, Haga Y, Seino J, Suzuki T. Siblings with MAN1B1-CDG Showing Novel Biochemical Profiles. Cells 2021; 10:cells10113117. [PMID: 34831340 PMCID: PMC8618856 DOI: 10.3390/cells10113117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022] Open
Abstract
Congenital disorders of glycosylation (CDG), inherited metabolic diseases caused by defects in glycosylation, are characterized by a high frequency of intellectual disability (ID) and various clinical manifestations. Two siblings with ID, dysmorphic features, and epilepsy were examined using mass spectrometry of serum transferrin, which revealed a CDG type 2 pattern. Whole-exome sequencing showed that both patients were homozygous for a novel pathogenic variant of MAN1B1 (NM_016219.4:c.1837del) inherited from their healthy parents. We conducted a HPLC analysis of sialylated N-linked glycans released from total plasma proteins and characterized the α1,2-mannosidase I activity of the lymphocyte microsome fraction. The accumulation of monosialoglycans was observed in MAN1B1-deficient patients, indicating N-glycan-processing defects. The enzymatic activity of MAN1B1 was compromised in patient-derived lymphocytes. The present patients exhibited unique manifestations including early-onset epileptic encephalopathy and cerebral infarction. They also showed coagulation abnormalities and hypertransaminasemia. Neither sibling had truncal obesity, which is one of the characteristic features of MAN1B1-CDG.
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Affiliation(s)
- Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women’s and Children’s Hospital, Izumi 594-1101, Japan
- Department of Molecular Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi 594-1101, Japan;
- Correspondence:
| | - Tatsuyuki Ohto
- Department of Pediatrics, Tsukuba University Faculty of Medicine, Tsukuba 305-8576, Japan; (T.O.); (T.E.)
| | - Takashi Enokizono
- Department of Pediatrics, Tsukuba University Faculty of Medicine, Tsukuba 305-8576, Japan; (T.O.); (T.E.)
| | - Yoshinao Wada
- Department of Molecular Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi 594-1101, Japan;
| | - Tomohiro Kohmoto
- Division of Molecular Genetics, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan; (T.K.); (I.I.)
- Department of Human Genetics, Graduate School of Biomedical Science, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Issei Imoto
- Division of Molecular Genetics, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan; (T.K.); (I.I.)
- Department of Human Genetics, Graduate School of Biomedical Science, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Yoshimi Haga
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako 351-0198, Japan; (Y.H.); (J.S.); (T.S.)
- Cancer Proteomics Group, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Junichi Seino
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako 351-0198, Japan; (Y.H.); (J.S.); (T.S.)
| | - Tadashi Suzuki
- Glycometabolic Biochemistry Laboratory, RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako 351-0198, Japan; (Y.H.); (J.S.); (T.S.)
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