Heterozygosity for a Loss-of-Function Mutation in GALNT2 Improves Plasma Triglyceride Clearance in Man
| العنوان: | Heterozygosity for a Loss-of-Function Mutation in GALNT2 Improves Plasma Triglyceride Clearance in Man |
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| المؤلفون: | Stefan Ljunggren, Helen Karlsson, Dirk Lefeber, Geesje M. Dallinga-Thie, Johannes M. F. G. Aerts, Daniel S. Herman, Johannes H.M. Levels, Erik S.G. Stroes, John J.P. Kastelein, Eva Morava, Jan Albert Kuivenhoven, Thomas M. Beres, Ruei Shiuan Lin, Jonathan G. Seidman, M. Mahdi Motazacker, Aeilko H. Zwinderman, Timothy A. Fritz, Lawrence A. Tabak, Christine E. Seidman, Adriaan G. Holleboom, Ron A. Wevers, Jeroen A. Sierts, Mats Lindahl, G. Kees Hovingh |
| المساهمون: | Vascular Medicine, Other departments, Amsterdam Cardiovascular Sciences, Amsterdam Gastroenterology Endocrinology Metabolism, Medical Biochemistry, Human Genetics, Amsterdam institute for Infection and Immunity, Experimental Vascular Medicine, Amsterdam Public Health, Epidemiology and Data Science, Cardiovascular Centre (CVC), Lifestyle Medicine (LM), Vascular Ageing Programme (VAP), Center for Liver, Digestive and Metabolic Diseases (CLDM) |
| المصدر: | Cell metabolism, 14(6), 811-818. Cell Press Cell metabolism, 14(6), 811-818. CELL PRESS Cell Metabolism, 14, 6, pp. 811-8 CELL METABOLISM, 14(6), 811-818 Cell Metabolism, 14, 811-8 |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Male, Apolipoprotein B, Physiology, Neuroinformatics [DCN 3], 030204 cardiovascular system & hematology, chemistry.chemical_compound, 0302 clinical medicine, Electrophoresis, Gel, Two-Dimensional, APOLIPOPROTEIN-C-III, 0303 health sciences, Lipoprotein lipase, Middle Aged, Postprandial Period, Cholesterol, Biochemistry, N-Acetylgalactosaminyltransferases, Female, lipids (amino acids, peptides, and proteins), LIPOPROTEIN-LIPASE S447X, Adult, Heterozygote, medicine.medical_specialty, Glycosylation, 2-DIMENSIONAL GEL-ELECTROPHORESIS, METABOLISM, Biology, Models, Biological, Article, Genomic disorders and inherited multi-system disorders [IGMD 3], 03 medical and health sciences, Internal medicine, medicine, Humans, Lipase, Molecular Biology, Aged, 030304 developmental biology, Apolipoprotein C-III, APOPROTEINS, Triglyceride, GLYCOSYLATION, Lipid metabolism, MASS-SPECTROMETRY, Cell Biology, Glycostation disorders [IGMD 4], HEPATIC-UPTAKE, Lipoprotein Lipase, Endocrinology, chemistry, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Mutation, RICH LIPOPROTEINS, biology.protein, ANGIOPOIETIN-LIKE PROTEIN-3, Peptides |
| الوصف: | Item does not contain fulltext Genome-wide association studies have identified GALNT2 as a candidate gene in lipid metabolism, but it is not known how the encoded enzyme ppGalNAc-T2, which contributes to the initiation of mucin-type O-linked glycosylation, mediates this effect. In two probands with elevated plasma high-density lipoprotein cholesterol and reduced triglycerides, we identified a mutation in GALNT2. It is shown that carriers have improved postprandial triglyceride clearance, which is likely attributable to attenuated glycosylation of apolipoprotein (apo) C-III, as observed in their plasma. This protein inhibits lipoprotein lipase (LPL), which hydrolyses plasma triglycerides. We show that an apoC-III-based peptide is a substrate for ppGalNAc-T2 while its glycosylation by the mutant enzyme is impaired. In addition, neuraminidase treatment of apoC-III which removes the sialic acids from its glycan chain decreases its potential to inhibit LPL. Combined, these data suggest that ppGalNAc-T2 can affect lipid metabolism through apoC-III glycosylation, thereby establishing GALNT2 as a lipid-modifying gene. |
| وصف الملف: | application/pdf |
| تدمد: | 1550-4131 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3eee28c011254c8aba1d859939c48feTest https://doi.org/10.1016/j.cmet.2011.11.005Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b3eee28c011254c8aba1d859939c48fe |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15504131 |
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