Characterization of New Proteomic Biomarker Candidates in Mucopolysaccharidosis Type IVA
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Title: | Characterization of New Proteomic Biomarker Candidates in Mucopolysaccharidosis Type IVA |
Author: | Álvarez González, José Víctor Bravo López, Susana Belén Chantada Vázquez, María del Pilar Colón Mejeras, Cristóbal Castro López, María José de Morales, Montserrat Vitoria, Isidro Tomatsu, Shunji Otero Espinar, Francisco Javier Couce Pico, María de la Luz |
Affiliation: | Universidade de Santiago de Compostela. Departamento de Ciencias Forenses, Anatomía Patolóxica, Xinecoloxía e Obstetricia, e Pediatría Universidade de Santiago de Compostela. Departamento de Farmacoloxía, Farmacia e Tecnoloxía Farmacéutica |
Subject: | Biomarkers | Enzyme replacement therapy | Lysosomal disorders | Proteomics | |
Date of Issue: | 2021 |
Publisher: | MDPI |
Citation: | Álvarez, V.J.; Bravo, S.B.; Chantada-Vazquez, M.P.; Colón, C.; De Castro, M.J.; Morales, M.; Vitoria, I.; Tomatsu, S.; Otero-Espinar, F.J.; Couce, M.L. Characterization of New Proteomic Biomarker Candidates in Mucopolysaccharidosis Type IVA. Int. J. Mol. Sci. 2021, 22, 226 |
Abstract: | Mucopolysaccharidosis type IVA (MPS IVA) is a lysosomal storage disease caused by mutations in the N-acetylgalactosamine-6-sulfatase (GALNS) gene. Skeletal dysplasia and the related clinical features of MPS IVA are caused by disruption of the cartilage and its extracellular matrix, leading to a growth imbalance. Enzyme replacement therapy (ERT) with recombinant human GALNS has yielded positive results in activity of daily living and endurance tests. However, no data have demonstrated improvements in bone lesions and bone grow thin MPS IVA after ERT, and there is no correlation between therapeutic efficacy and urine levels of keratan sulfate, which accumulates in MPS IVA patients. Using qualitative and quantitative proteomics approaches, we analyzed leukocyte samples from healthy controls (n = 6) and from untreated (n = 5) and ERT-treated (n = 8, sampled before and after treatment) MPS IVA patients to identify potential biomarkers of disease. Out of 690 proteins identified in leukocytes, we selected a group of proteins that were dysregulated in MPS IVA patients with ERT. From these, we identified four potential protein biomarkers, all of which may influence bone and cartilage metabolism: lactotransferrin, coronin 1A, neutral alpha-glucosidase AB, and vitronectin. Further studies of cartilage and bone alterations in MPS IVA will be required to verify the validity of these proteins as potential biomarkers of MPS IVA |
Publisher version: | https://doi.org/10.3390/ijms22010226 |
URI: | http://hdl.handle.net/10347/24188 |
DOI: | 10.3390/ijms22010226 |
E-ISSN: | 1422-0067 |
Rights: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/) Atribución 4.0 Internacional |
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