1
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Ding SW, Wang JJ. Diagnostic value and clinical significance of lncRNA LINC01123 combined with fibrinogen in acute cerebral infarction. Clin Neurol Neurosurg 2024; 241:108309. [PMID: 38713963 DOI: 10.1016/j.clineuro.2024.108309] [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: 11/24/2023] [Revised: 03/04/2024] [Accepted: 04/27/2024] [Indexed: 05/09/2024]
Abstract
OBJECTIVE To explore the diagnostic value and clinical significance of lncRNA LINC01123 (LINC01123) binding fibrinogen in acute cerebral infarction (ACI) by evaluating the expression and potential molecular mechanism of LINC01123 in patients with acute cerebral infarction. METHODS The clinical data of all the volunteers were collected. The level of serum LINC01123 in ACI patients was detected by RT-qPCR. The relationship between LINC01123 and fibrinogen was studied via Pearson's correlation analysis. ROC curve was used to evaluate the diagnostic value of LINC01123 and fibrinogen for ACI. The risk factors of ACI were investigated by Binary Logistic regression analysis. And the targeting relationship between LINC01123 and downstream miR-361-3p was verified through luciferase activity assay. RESULTS Serum LINC01123 and fibrinogen levels were upregulated in ACI patients compared with healthy controls (P < 0.001), and there was a positive correlation between them (r = 0.6537, P < 0.001). In predicting the occurrence of ACI, LINC01123 and fibrinogen have high diagnostic value, and the AUC of combined diagnosis was 0.961, and the sensitivity and specificity (92.54%, 85.82%) were more significant. Meanwhile, LINC01123 and fibrinogen were confirmed to be independent risk factors for ACI (P < 0.0001). Mechanistically, miR-361-3p is the target of LINC01123. The expression of miR-361-3p was low in the serum of ACI patients, which was negatively correlated with the LINC01123 expression (r = -0.6885, P < 0.0001). CONCLUSION LINC01123 combined with fibrinogen may have important reference value in the diagnosis of ACI as serum markers, which may become clinical indicators to predict the occurrence of ACI.
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Affiliation(s)
- Shao-Wei Ding
- Department of Medical Laboratory, Hefei BOE Hospital, Hefei, Anhui 230011, China.
| | - Juan-Juan Wang
- Department of Medical Laboratory, Hefei BOE Hospital, Hefei, Anhui 230011, China
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2
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Heat shock protein Hspa13 regulates endoplasmic reticulum and cytosolic proteostasis through modulation of protein translocation. J Biol Chem 2022; 298:102597. [PMID: 36244454 PMCID: PMC9691929 DOI: 10.1016/j.jbc.2022.102597] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 11/06/2022] Open
Abstract
Most eukaryotic secretory proteins are cotranslationally translocated through Sec61 into the endoplasmic reticulum (ER). Because these proteins have evolved to fold in the ER, their mistargeting is associated with toxicity. Genetic experiments have implicated the ER heat shock protein 70 (Hsp70) Hspa13/STCH as involved in processing of nascent secretory proteins. Herein, we evaluate the role of Hspa13 in protein import and the maintenance of cellular proteostasis in human cells, primarily using the human embryonic kidney 293T cell line. We find that Hspa13 interacts primarily with the Sec61 translocon and its associated factors. Hspa13 overexpression inhibits translocation of the secreted protein transthyretin, leading to accumulation and aggregation of immature transthyretin in the cytosol. ATPase-inactive mutants of Hspa13 further inhibit translocation and maturation of secretory proteins. While Hspa13 overexpression inhibits cell growth and ER quality control, we demonstrate that HSPA13 knockout destabilizes proteostasis and increases sensitivity to ER disruption. Thus, we propose that Hspa13 regulates import through the translocon to maintain both ER and cytosolic protein homeostasis. The raw mass spectrometry data associated with this article have been deposited in the PRIDE archive and can be accessed at PXD033498.
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3
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Bona AB, Calcagno DQ, Ribeiro HF, Muniz JAPC, Pinto GR, Rocha CAM, Lacreta Junior ACC, de Assumpção PP, Herranz JAR, Burbano RR. Menadione reduces CDC25B expression and promotes tumor shrinkage in gastric cancer. Therap Adv Gastroenterol 2020; 13:1756284819895435. [PMID: 35392297 PMCID: PMC8981514 DOI: 10.1177/1756284819895435] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/26/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Gastric cancer is one of the most incident types of cancer worldwide and presents high mortality rates and poor prognosis. MYC oncogene overexpression is a key event in gastric carcinogenesis and it is known that its protein positively regulates CDC25B expression which, in turn, plays an essential role in the cell division cycle progression. Menadione is a synthetic form of vitamin K that acts as a specific inhibitor of the CDC25 family of phosphatases. METHODS To better understand the menadione mechanism of action in gastric cancer, we evaluated its molecular and cellular effects in cell lines and in Sapajus apella, nonhuman primates from the new world which had gastric carcinogenesis induced by N-Methyl-N-nitrosourea. We tested CDC25B expression by western blot and RT-qPCR. In-vitro assays include proliferation, migration, invasion and flow cytometry to analyze cell cycle arrest. In in-vivo experiments, in addition to the expression analyses, we followed the preneoplastic lesions and the tumor progression by ultrasonography, endoscopy, biopsies, histopathology and immunohistochemistry. RESULTS Our tests demonstrated menadione reducing CDC25B expression in vivo and in vitro. It was able to reduce migration, invasion and proliferation rates, and induce cell cycle arrest in gastric cancer cell lines. Moreover, our in-vivo experiments demonstrated menadione inhibiting tumor development and progression. CONCLUSIONS We suggest this compound may be an important ally of chemotherapeutics in the treatment of gastric cancer. In addition, CDC25B has proven to be an effective target for investigation and development of new therapeutic strategies for this malignancy.
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Affiliation(s)
| | - Danielle Queiroz Calcagno
- Oncology Research Nucleus, University Hospital
João de Barros Barreto, Federal University of Pará, Belém, Brazil
| | - Helem Ferreira Ribeiro
- Center of Biological and Health Sciences,
Department of Biomedicine, University of Amazon, Belém, Brazil
| | | | | | | | | | - Paulo Pimentel de Assumpção
- Oncology Research Nucleus, University Hospital
João de Barros Barreto, Federal University of Pará, Belém, Brazil
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4
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Yamamoto N, Akai T, Inoue R, Sugiyama M, Tamura A, Chatani E. Structural Insights into the Inhibition of Amyloid Fibril Formation by Fibrinogen via Interaction with Prefibrillar Intermediates. Biochemistry 2019; 58:2769-2781. [DOI: 10.1021/acs.biochem.9b00439] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Naoki Yamamoto
- Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Taiki Akai
- Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Rintaro Inoue
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Masaaki Sugiyama
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Atsuo Tamura
- Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Eri Chatani
- Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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5
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Hood JE, Yesudasan S, Averett RD. Glucose Concentration Affects Fibrin Clot Structure and Morphology as Evidenced by Fluorescence Imaging and Molecular Simulations. Clin Appl Thromb Hemost 2018; 24:104S-116S. [PMID: 30114949 PMCID: PMC6714860 DOI: 10.1177/1076029618792304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Although in vivo studies have been conducted in the past to determine hyperglycemic effects and influence on clotting risk in patients with diabetes, the true extent of hyperglycemia on unstable and spontaneous clot formation remains highly debated. Factors such as increased glycation, elevated fibrinogen concentration, elevated prothrombin levels, and decreased plasminogen are known to influence fibrin conversion, clot morphology, and thrombus formation in these individuals. In this regard, the isolated effects of hyperglycemia on irregular fibrin clot formation were investigated in a controlled fibrinogen system. In this study, fibrin clot characteristic differences at 3 glucose concentrations were analyzed to determine the effects of glucose concentration on fibrinogen glycation and fibrin clot morphology using confocal microscopy, glycation quantification, molecular simulations, and image processing methods. Algorithms coupled with statistical analysis support in vivo findings that hyperglycemia increases fibrinogen glycation, with ensuing altered fibrin clot structure characteristics. Our experimental and molecular simulation results consistently show an increased glucose adsorption by fibrinogen with increased glucose concentration. Significant differences in clot structure characteristics were observed, and the results of this work can be used to further develop diagnostic tools for evaluating clotting risk in individuals with hypercoagulable and hyperglycemic conditions.
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Affiliation(s)
- Jacob E Hood
- School of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Sumith Yesudasan
- School of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Rodney D Averett
- School of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
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6
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Niemietz C, Fleischhauer L, Sandfort V, Guttmann S, Zibert A, Schmidt HHJ. Hepatocyte-like cells reveal novel role of SerpinA1 in transthyretin amyloidosis. J Cell Sci 2018; 131:jcs.219824. [DOI: 10.1242/jcs.219824] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 09/18/2018] [Indexed: 01/07/2023] Open
Abstract
Transthyretin (TTR)-related familial amyloid polyneuropathy (ATTR) results from aggregation and extracellular disposition of misfolded TTR variants. Growing evidence suggests the importance of hepatic chaperones for modulation of pathogenesis. We took advantage of iPSC-derived hepatocyte-like cells (HLCs) derived from ATTR patients (ATTR-HLCs) to compare chaperone gene expression to healthy individuals (H-HLCs). From the set of genes analyzed, chaperones that are predominantly located extracellularly were differently expressed. Expression of the chaperones showed a high correlation with TTR in both ATTR-HLCs and H-HLCs. In contrast, after TTR knockdown, the correlation was mainly affected in ATTR-HLCs suggesting that variant TTR expression triggers abberant chaperone expression. Serpin peptidase inhibitor clade A member 1 (SERPINA1/alpha-1 antitrypsin) was the only extracellular chaperone that was markedly upregulated after TTR knockdown in ATTR-HLCs. Co-immunoprecipitation revealed that SerpinA1 physically interacts with TTR. In vitro assays indicated that SerpinA1 can interfere with TTR aggregation. Taken together, our results suggest that extracellular chaperones play a crucial role in ATTR pathogenesis, in particular SerpinA1, which may affect amyloid formation.
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Affiliation(s)
- Christoph Niemietz
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
| | - Lutz Fleischhauer
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
- Present address: Fakultät für angewandte Naturwissenschaften und Mechatronik, Hochschule München, München, Germany
| | - Vanessa Sandfort
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
| | - Sarah Guttmann
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
| | - Andree Zibert
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
| | - Hartmut H.-J. Schmidt
- Medizinische Klinik B für Gastroenterologie und Hepatologie, Universitätsklinikum Münster, Münster, Germany
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7
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Soboleva A, Schmidt R, Vikhnina M, Grishina T, Frolov A. Maillard Proteomics: Opening New Pages. Int J Mol Sci 2017; 18:E2677. [PMID: 29231845 PMCID: PMC5751279 DOI: 10.3390/ijms18122677] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/29/2017] [Accepted: 12/05/2017] [Indexed: 12/12/2022] Open
Abstract
Protein glycation is a ubiquitous non-enzymatic post-translational modification, formed by reaction of protein amino and guanidino groups with carbonyl compounds, presumably reducing sugars and α-dicarbonyls. Resulting advanced glycation end products (AGEs) represent a highly heterogeneous group of compounds, deleterious in mammals due to their pro-inflammatory effect, and impact in pathogenesis of diabetes mellitus, Alzheimer's disease and ageing. The body of information on the mechanisms and pathways of AGE formation, acquired during the last decades, clearly indicates a certain site-specificity of glycation. It makes characterization of individual glycation sites a critical pre-requisite for understanding in vivo mechanisms of AGE formation and developing adequate nutritional and therapeutic approaches to reduce it in humans. In this context, proteomics is the methodology of choice to address site-specific molecular changes related to protein glycation. Therefore, here we summarize the methods of Maillard proteomics, specifically focusing on the techniques providing comprehensive structural and quantitative characterization of glycated proteome. Further, we address the novel break-through areas, recently established in the field of Maillard research, i.e., in vitro models based on synthetic peptides, site-based diagnostics of metabolism-related diseases (e.g., diabetes mellitus), proteomics of anti-glycative defense, and dynamics of plant glycated proteome during ageing and response to environmental stress.
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Affiliation(s)
- Alena Soboleva
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, 06120 Halle, Germany.
| | - Rico Schmidt
- Department of Pharmaceutical Chemistry and Bioanalytics, Institute of Pharmacy, Martin-Luther Universität Halle-Wittenberg, 06108 Halle, Germany.
| | - Maria Vikhnina
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, 06120 Halle, Germany.
| | - Tatiana Grishina
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
| | - Andrej Frolov
- Department of Biochemistry, St. Petersburg State University, Saint Petersburg 199034, Russia.
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, 06120 Halle, Germany.
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8
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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9
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Mariño L, Maya-Aguirre CA, Pauwels K, Vilanova B, Ortega-Castro J, Frau J, Donoso J, Adrover M. Glycation of Lysozyme by Glycolaldehyde Provides New Mechanistic Insights in Diabetes-Related Protein Aggregation. ACS Chem Biol 2017; 12:1152-1162. [PMID: 28257177 DOI: 10.1021/acschembio.6b01103] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Glycation occurs in vivo as a result of the nonenzymatic reaction of carbohydrates (and/or their autoxidation products) with proteins, DNA, or lipids. Protein glycation causes loss-of-function and, consequently, the development of diabetic-related diseases. Glycation also boosts protein aggregation, which can be directly related with the higher prevalence of aggregating diseases in diabetic people. However, the molecular mechanism connecting glycation with aggregation still remains unclear. Previously we described mechanistically how glycation of hen egg-white lysozyme (HEWL) with ribose induced its aggregation. Here we address the question of whether the ribose-induced aggregation is a general process or it depends on the chemical nature of the glycating agent. Glycation of HEWL with glycolaldehyde occurs through two different scenarios depending on the HEWL concentration regime (both within the micromolar range). At low HEWL concentration, non-cross-linking fluorescent advanced glycation end-products (AGEs) are formed on Lys side chains, which do not change the protein structure but inhibit its enzymatic activity. These AGEs have little impact on HEWL surface hydrophobicity and, therefore, a negligible effect on its aggregation propensity. Upon increasing HEWL concentration, the glycation mechanism shifts toward the formation of intermolecular cross-links, which triggers a polymerization cascade involving the formation of insoluble spherical-like aggregates. These results notably differ with the aggregation-modulation mechanism of ribosylated HEWL directed by hydrophobic interactions. Additionally, their comparison constitutes the first experimental evidence showing that the mechanism underlying the aggregation of a glycated protein depends on the chemical nature of the glycating agent.
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Affiliation(s)
- Laura Mariño
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Carlos Andrés Maya-Aguirre
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Kris Pauwels
- Structural
Biology Brussels, Vrije Universiteit Brussels, Pleinlaan 2, 1050 Brussels, Belgium
- VIB
Structural Biology Research Centre, Vlaams Instituut voor Biotechnologie, Pleinlaan 2, 1050 Brussels, Belgium
| | - Bartolomé Vilanova
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Joaquin Ortega-Castro
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Juan Frau
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Josefa Donoso
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
| | - Miquel Adrover
- University Institute of Health Sciences (UNICS-IdisPa), Ctra. Valldemossa 79, E-07010, Palma de Mallorca, Spain
- Departament
de Química, Universitat de les Illes Balears, Ctra. Valldemossa
km 7.5, E-07122, Palma de Mallorca, Spain
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10
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Toxicity of Protein and DNA-AGEs in Neurodegenerative Diseases (NDDs) with Decisive Approaches to Stop the Deadly Consequences. PERSPECTIVES IN ENVIRONMENTAL TOXICOLOGY 2017. [DOI: 10.1007/978-3-319-46248-6_5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Wieczorek E, Kędracka–Krok S, Sołtys K, Jankowska U, Hołubowicz R, Seliga J, Ożyhar A. Is Transthyretin a Regulator of Ubc9 SUMOylation? PLoS One 2016; 11:e0160536. [PMID: 27501389 PMCID: PMC4976990 DOI: 10.1371/journal.pone.0160536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 07/20/2016] [Indexed: 12/21/2022] Open
Abstract
Ageing and mutations of transthyretin (TTR), the thyroid hormones and retinol transporting protein lead to amyloidosis by destabilizing the structure of TTR. Because protein structure is regulated through posttranslational modifications, we investigated the Small Ubiquitin-like Modifier (SUMO)ylation of TTR. We chose the widely used Ubc9 fusion-directed SUMOylation system, which is based on a fusion of the SUMOylation substrate of interest with Ubc9, a sole SUMO conjugating enzyme. Surprisingly, despite our presumptions, we found that Ubc9 fused to TTR was SUMOylated at a unique set of lysine residues. Three unknown SUMOylation sites of Ubc9-K154, K18 and K65-were revealed by mass spectrometry (MS). The previously reported SUMOylation at K49 of Ubc9 was also observed. SUMOylation of the lysine residues of TTR fused to Ubc9 was hardly detectable. However, non-fused TTR was SUMOylated via trans-SUMOylation by Ubc9 fused to TTR. Interestingly, mutating the catalytic residue of Ubc9 fused to TTR did not result in complete loss of the SUMOylation signal, suggesting that Ubc9 linked to TTR is directly cross-SUMOylated by the SUMO-activating enzyme E1. Ubc9, TTR or fusion proteins composed of TTR and Ubc9 specifically affected the global SUMOylation of cellular proteins. TTR or Ubc9 alone increased global SUMOylation, whereas concomitant presence of TTR and Ubc9 did not further increase the amount of high-molecular weight (HMW) SUMO conjugates. Our data suggest that TTR may influence the SUMOylation of Ubc9, thereby altering signalling pathways in the cell.
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Affiliation(s)
- Elżbieta Wieczorek
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
- * E-mail:
| | - Sylwia Kędracka–Krok
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Katarzyna Sołtys
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Urszula Jankowska
- Department of Structural Biology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Rafał Hołubowicz
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Justyna Seliga
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
| | - Andrzej Ożyhar
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, Wrocław, Poland
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12
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The role of fibrinogen glycation in ATTR: evidence for chaperone activity loss in disease. Biochem J 2016; 473:2225-37. [DOI: 10.1042/bcj20160290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 05/12/2016] [Indexed: 12/14/2022]
Abstract
Transthyretin amyloidosis (ATTR) belongs to a class of disorders caused by protein misfolding and aggregation. ATTR is a disabling disorder of autosomal dominant trait, where transthyretin (TTR) forms amyloid deposits in different organs, causing dysfunction of the peripheral nervous system. We previously discovered that amyloid fibrils from ATTR patients are glycated by methylglyoxal. Even though no consensus has been reached about the actual role of methylglyoxal-derived advanced glycation end-products in amyloid diseases, evidence collected so far points to a role for protein glycation in conformational abnormalities, being ubiquitously found in amyloid deposits in Alzheimer's disease, dialysis-related amyloidosis and Parkinson's diseases. Human fibrinogen, an extracellular chaperone, was reported to specifically interact with a wide spectrum of stressed proteins and suppress their aggregation, being an interacting protein with TTR. Fibrinogen is differentially glycated in ATTR, leading to its chaperone activity loss. Here we show the existence of a proteostasis imbalance in ATTR linked to fibrinogen glycation by methylglyoxal.
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Awasthi S, Sankaranarayanan K, Saraswathi NT. Advanced glycation end products induce differential structural modifications and fibrillation of albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 163:60-67. [PMID: 27037764 DOI: 10.1016/j.saa.2016.03.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 03/11/2016] [Accepted: 03/20/2016] [Indexed: 06/05/2023]
Abstract
Glycation induced amyloid fibrillation is fundamental to the development of many neurodegenerative and cardiovascular complications. Excessive non-enzymatic glycation in conditions such as hyperglycaemia results in the increased accumulation of advanced glycation end products (AGEs). AGEs are highly reactive pro-oxidants, which can lead to the activation of inflammatory pathways and development of oxidative stress. Recently, the effect of non-enzymatic glycation on protein structure has been the major research area, but the role of specific AGEs in such structural alteration and induction of fibrillation remains undefined. In this study, we determined the specific AGEs mediated structural modifications in albumin mainly considering carboxymethyllysine (CML), carboxyethyllysine (CEL), and argpyrimidine (Arg-P) which are the major AGEs formed in the body. We studied the secondary structural changes based on circular dichroism (CD) and spectroscopic analysis. The AGEs induced fibrillation was determined by Congo red binding and examination of scanning and transmission electron micrographs. The amyloidogenic regions in the sequence of BSA were determined using FoldAmyloid. It was observed that CEL modification of BSA leads to the development of fibrillar structures, which was evident from both secondary structure changes and TEM analysis.
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Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India
| | - Kamatchi Sankaranarayanan
- DST-INSPIRE Faculty, Department of Energy and Environment, National Institute of Technology, Tiruchirappalli 620015, Tamilnadu, India
| | - N T Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, Tamilnadu, India.
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Lebesgue N, da Costa G, Ribeiro RM, Ribeiro-Silva C, Martins GG, Matranga V, Scholten A, Cordeiro C, Heck AJR, Santos R. Deciphering the molecular mechanisms underlying sea urchin reversible adhesion: A quantitative proteomics approach. J Proteomics 2016; 138:61-71. [PMID: 26926440 DOI: 10.1016/j.jprot.2016.02.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 01/24/2023]
Abstract
UNLABELLED Marine bioadhesives have unmatched performances in wet environments, being an inspiration for biomedical applications. In sea urchins specialized adhesive organs, tube feet, mediate reversible adhesion, being composed by a disc, producing adhesive and de-adhesive secretions, and a motile stem. After tube foot detachment, the secreted adhesive remains bound to the substratum as a footprint. Sea urchin adhesive is composed by proteins and sugars, but so far only one protein, Nectin, was shown to be over-expressed as a transcript in tube feet discs, suggesting its involvement in sea urchin adhesion. Here we use high-resolution quantitative mass-spectrometry to perform the first study combining the analysis of the differential proteome of an adhesive organ, with the proteome of its secreted adhesive. This strategy allowed us to identify 163 highly over-expressed disc proteins, specifically involved in sea urchin reversible adhesion; to find that 70% of the secreted adhesive components fall within five protein groups, involved in exocytosis and microbial protection; and to provide evidences that Nectin is not only highly expressed in tube feet discs but is an actual component of the adhesive. These results give an unprecedented insight into the molecular mechanisms underlying sea urchin adhesion, and opening new doors to develop wet-reliable, reversible, and ecological biomimetic adhesives. SIGNIFICANCE Sea urchins attach strongly but in a reversible manner to substratum, being a valuable source of inspiration for industrial and biomedical applications. Yet, the molecular mechanisms governing reversible adhesion are still poorly studied delaying the engineering of biomimetic adhesives. We used the latest mass spectrometry techniques to analyze the differential proteome of an adhesive organ and the proteome of its secreted adhesive, allowing us to uncover the key players in sea urchin reversible adhesion. We demonstrate, that Nectin, a protein previously pointed out as potentially involved in sea urchin adhesion, is not only highly expressed in tube feet discs, but is a genuine component of the secreted adhesive.
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Affiliation(s)
- Nicolas Lebesgue
- Netherlands Proteomics Center, Padualaan 8, 3584, CH, Utrecht, Netherlands; Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, Netherlands
| | - Gonçalo da Costa
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Campo Grande, 1749-016, Lisboa, Portugal; Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal; Laboratório de FTICR e espectrometria de massa estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Raquel Mesquita Ribeiro
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Campo Grande, 1749-016, Lisboa, Portugal; Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Cristina Ribeiro-Silva
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Campo Grande, 1749-016, Lisboa, Portugal; Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Gabriel G Martins
- Instituto Gulbenkian de Ciência, R. da Quinta Grande 6, 2780-156 Oeiras, Portugal; Centro de Ecologia, Evolução e Alterações Ambientais, Faculdade de Ciências da Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Valeria Matranga
- Consiglio Nazionale delle Ricerche, Istituto di Biomedicina e Immunologia Molecolare, 'Alberto Monroy', Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - Arjen Scholten
- Netherlands Proteomics Center, Padualaan 8, 3584, CH, Utrecht, Netherlands; Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, Netherlands
| | - Carlos Cordeiro
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Campo Grande, 1749-016, Lisboa, Portugal; Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal; Laboratório de FTICR e espectrometria de massa estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Albert J R Heck
- Netherlands Proteomics Center, Padualaan 8, 3584, CH, Utrecht, Netherlands; Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584, CH, Utrecht, Netherlands
| | - Romana Santos
- Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Campo Grande, 1749-016, Lisboa, Portugal; MARE - Centro de Ciências do Mar e do Ambiente, Faculdade de Ciências da Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal.
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15
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da Costa G, Ribeiro-Silva C, Ribeiro R, Gilberto S, Gomes RA, Ferreira A, Mateus É, Barroso E, Coelho AV, Freire AP, Cordeiro C. Transthyretin Amyloidosis: Chaperone Concentration Changes and Increased Proteolysis in the Pathway to Disease. PLoS One 2015; 10:e0125392. [PMID: 26147092 PMCID: PMC4492746 DOI: 10.1371/journal.pone.0125392] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 03/24/2015] [Indexed: 11/18/2022] Open
Abstract
Transthyretin amyloidosis is a conformational pathology characterized by the extracellular formation of amyloid deposits and the progressive impairment of the peripheral nervous system. Point mutations in this tetrameric plasma protein decrease its stability and are linked to disease onset and progression. Since non-mutated transthyretin also forms amyloid in systemic senile amyloidosis and some mutation bearers are asymptomatic throughout their lives, non-genetic factors must also be involved in transthyretin amyloidosis. We discovered, using a differential proteomics approach, that extracellular chaperones such as fibrinogen, clusterin, haptoglobin, alpha-1-anti-trypsin and 2-macroglobulin are overrepresented in transthyretin amyloidosis. Our data shows that a complex network of extracellular chaperones are over represented in human plasma and we speculate that they act synergistically to cope with amyloid prone proteins. Proteostasis may thus be as important as point mutations in transthyretin amyloidosis.
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Affiliation(s)
- Gonçalo da Costa
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
| | | | - Raquel Ribeiro
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
| | - Samuel Gilberto
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
| | - Ricardo A Gomes
- Instituto de Tecnologia Química e Biológica, Av. da República Estação Agronómica Nacional, Oeiras, Portugal
| | - António Ferreira
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
| | - Élia Mateus
- Unidade de Transplantação, Hospital Curry Cabral, Lisboa, Portugal
| | - Eduardo Barroso
- Unidade de Transplantação, Hospital Curry Cabral, Lisboa, Portugal
| | - Ana V Coelho
- Instituto de Tecnologia Química e Biológica, Av. da República Estação Agronómica Nacional, Oeiras, Portugal
| | - Ana Ponces Freire
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
| | - Carlos Cordeiro
- Centro de Química e Bioquímica, FCUL, Campo Grande, Lisboa, Portugal
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16
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Awasthi S, Saraswathi NT. Silybin, a flavonolignan from milk thistle seeds, restrains the early and advanced glycation end product modification of albumin. RSC Adv 2015. [DOI: 10.1039/c5ra15550a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Silybin exhibited a protective effect towards the non-enzymatic glycation mediated structure functional changes in albumin.
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Affiliation(s)
- Saurabh Awasthi
- Molecular Biophysics Lab. School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | - N. T. Saraswathi
- Molecular Biophysics Lab. School of Chemical and Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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17
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Salahuddin P, Rabbani G, Khan RH. The role of advanced glycation end products in various types of neurodegenerative disease: a therapeutic approach. Cell Mol Biol Lett 2014; 19:407-37. [PMID: 25141979 PMCID: PMC6275793 DOI: 10.2478/s11658-014-0205-5] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 07/28/2014] [Indexed: 12/12/2022] Open
Abstract
Protein glycation is initiated by a nucleophilic addition reaction between the free amino group from a protein, lipid or nucleic acid and the carbonyl group of a reducing sugar. This reaction forms a reversible Schiff base, which rearranges over a period of days to produce ketoamine or Amadori products. The Amadori products undergo dehydration and rearrangements and develop a cross-link between adjacent proteins, giving rise to protein aggregation or advanced glycation end products (AGEs). A number of studies have shown that glycation induces the formation of the β-sheet structure in β-amyloid protein, α-synuclein, transthyretin (TTR), copper-zinc superoxide dismutase 1 (Cu, Zn-SOD-1), and prion protein. Aggregation of the β-sheet structure in each case creates fibrillar structures, respectively causing Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, familial amyloid polyneuropathy, and prion disease. It has been suggested that oligomeric species of glycated α-synuclein and prion are more toxic than fibrils. This review focuses on the pathway of AGE formation, the synthesis of different types of AGE, and the molecular mechanisms by which glycation causes various types of neurodegenerative disease. It discusses several new therapeutic approaches that have been applied to treat these devastating disorders, including the use of various synthetic and naturally occurring inhibitors. Modulation of the AGE-RAGE axis is now considered promising in the prevention of neurodegenerative diseases. Additionally, the review covers several defense enzymes and proteins in the human body that are important anti-glycating systems acting to prevent the development of neurodegenerative diseases.
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Affiliation(s)
- Parveen Salahuddin
- Distributed Information Sub Center Unit, Aligarh Muslim University, Aligarh, 202 002 India
| | - Gulam Rabbani
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202 002 India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202 002 India
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18
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Adrover M, Mariño L, Sanchis P, Pauwels K, Kraan Y, Lebrun P, Vilanova B, Muñoz F, Broersen K, Donoso J. Mechanistic insights in glycation-induced protein aggregation. Biomacromolecules 2014; 15:3449-62. [PMID: 25057908 DOI: 10.1021/bm501077j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Protein glycation causes loss-of-function through a process that has been associated with several diabetic-related diseases. Additionally, glycation has been hypothesized as a promoter of protein aggregation, which could explain the observed link between hyperglycaemia and the development of several aggregating diseases. Despite its relevance in a range of diseases, the mechanism through which glycation induces aggregation remains unknown. Here we describe the molecular basis of how glycation is linked to aggregation by applying a variety of complementary techniques to study the nonenzymatic glycation of hen lysozyme with ribose (ribosylation) as the reducing carbohydrate. Ribosylation involves a chemical multistep conversion that induces chemical modifications on lysine side chains without altering the protein structure, but changing the protein charge and enlarging its hydrophobic surface. These features trigger lysozyme native-like aggregation by forming small oligomers that evolve into bigger insoluble particles. Moreover, lysozyme incubated with ribose reduces the viability of SH-SY5Y neuroblastoma cells. Our new insights contribute toward a better understanding of the link between glycation and aggregation.
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Affiliation(s)
- Miquel Adrover
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears , Carretera de Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain
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19
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Utrobičić I, Novak I, Marinović-Terzić I, Matić K, Lessel D, Salamunić I, Babić MS, Kunac N, Mešin AK, Kubisch C, Maček B, Terzić J. Carpal tunnel syndrome is associated with high fibrinogen and fibrinogen deposits. Neurosurgery 2014; 75:276-85; discussion 285. [PMID: 24867207 DOI: 10.1227/neu.0000000000000422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Idiopathic carpal tunnel syndrome (ICTS) is a common entrapment neuropathy. Some cases of ICTS are linked to mutations of the transthyretin gene, whereas others are associated with systemic amyloidosis. The majority of ICTS cases are of unknown etiology. OBJECTIVE To study molecular mechanisms of ICTS development. METHODS A total of 71 ICTS patients and 68 control subjects were included in the study. The fibrinogen level was determined before surgery and its deposition in the transversal carpal ligament (TCL) was detected by immunohistochemistry, Western blot, and mass spectrometry. Fibrinogen interaction with other proteins was studied by immunoprecipitation assay. RESULTS Plasma levels of the proinflammatory and hemostatic protein fibrinogen are elevated in ICTS patients. Other measured systemic inflammatory markers were not affected, and local inflammatory responses in TCL were absent. ICTS patients have shorter bleeding times, probably because of the elevated plasma levels of fibrinogen. Polymorphisms of the fibrinogen B promoter region were previously associated with increased plasma fibrinogen, but this association was not observed among patients with ICTS. Interestingly, we detected fibrinogen deposits in the TCL, whereas transcriptional activity of the fibrinogen genes was low. Amyloidogenic proteins, including transthyretin and α-synuclein, were also found in the TCL, whereas their local transcriptional activity was rather high. Finally, we demonstrated that fibrinogen interacts with transthyretin and α-synuclein in TCL lysates. CONCLUSION Our data indicate that fibrinogen and other aggregation-prone proteins have potentially important roles in the pathogenesis of ICTS.
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Affiliation(s)
- Ivan Utrobičić
- ‡Department of Plastic Surgery, University Hospital Split, and University of Split School of Medicine, Split, Croatia; §University of Split School of Medicine, Split, Croatia; ¶Proteome Center Tübingen, Tübingen, Germany; ‖Institute of Human Genetics, University of Ulm, Ulm, Germany; #Department of Laboratory Diagnostics, University Hospital Split, and University of Split School of Medicine, Split, Croatia; **Department of Anatomy and Histology, University Hospital Split, and University of Split School of Medicine, Split, Croatia; ‡‡Department of Pathology, University Hospital Split, Split, Croatia; §§Unit for Family Practice, Split, Croatia
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20
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Arena S, Salzano AM, Renzone G, D'Ambrosio C, Scaloni A. Non-enzymatic glycation and glycoxidation protein products in foods and diseases: an interconnected, complex scenario fully open to innovative proteomic studies. MASS SPECTROMETRY REVIEWS 2014; 33:49-77. [PMID: 24114996 DOI: 10.1002/mas.21378] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 03/09/2013] [Accepted: 03/09/2013] [Indexed: 06/02/2023]
Abstract
The Maillard reaction includes a complex network of processes affecting food and biopharmaceutical products; it also occurs in living organisms and has been strictly related to cell aging, to the pathogenesis of several (chronic) diseases, such as diabetes, uremia, cataract, liver cirrhosis and various neurodegenerative pathologies, as well as to peritoneal dialysis treatment. Dozens of compounds are involved in this process, among which a number of protein-adducted derivatives that have been simplistically defined as early, intermediate and advanced glycation end-products. In the last decade, various bottom-up proteomic approaches have been successfully used for the identification of glycation/glycoxidation protein targets as well as for the characterization of the corresponding adducts, including assignment of the modified amino acids. This article provides an updated overview of the mass spectrometry-based procedures developed to this purpose, emphasizing their partial limits with respect to current proteomic approaches for the analysis of other post-translational modifications. These limitations are mainly related to the concomitant sheer diversity, chemical complexity, and variable abundance of the various derivatives to be characterized. Some challenges to scientists are finally proposed for future proteomic investigations to solve main drawbacks in this research field.
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Affiliation(s)
- Simona Arena
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147, Naples, Italy
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21
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Fagiuoli S, Daina E, D'Antiga L, Colledan M, Remuzzi G. Monogenic diseases that can be cured by liver transplantation. J Hepatol 2013; 59:595-612. [PMID: 23578885 DOI: 10.1016/j.jhep.2013.04.004] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 04/02/2013] [Accepted: 04/02/2013] [Indexed: 02/08/2023]
Abstract
While the prevalence of most diseases caused by single-gene mutations is low and defines them as rare conditions, all together, monogenic diseases account for approximately 10 in every 1000 births according to the World Health Organisation. Orthotopic liver transplantation (LT) could offer a therapeutic option in monogenic diseases in two ways: by substituting for an injured liver or by supplying a tissue that can replace a mutant protein. In this respect, LT may be regarded as the correction of a disease at the level of the dysfunctional protein. Monogenic diseases that involve the liver represent a heterogeneous group of disorders. In conditions associated with predominant liver parenchymal damage (i.e., genetic cholestatic disorders, Wilson's disease, hereditary hemochromatosis, tyrosinemia, α1 antitrypsin deficiency), hepatic complications are the major source of morbidity and LT not only replaces a dysfunctional liver but also corrects the genetic defect and effectively cures the disease. A second group includes liver-based genetic disorders characterised by an architecturally near-normal liver (urea cycle disorders, Crigler-Najjar syndrome, familial amyloid polyneuropathy, primary hyperoxaluria type 1, atypical haemolytic uremic syndrome-1). In these defects, extrahepatic complications are the main source of morbidity and mortality while liver function is relatively preserved. Combined transplantation of other organs may be required, and other surgical techniques, such as domino and auxiliary liver transplantation, have been attempted. In a third group of monogenic diseases, the underlying genetic defect is expressed at a systemic level and liver involvement is just one of the clinical manifestations. In these conditions, LT might only be partially curative since the abnormal phenotype is maintained by extrahepatic synthesis of the toxic metabolites (i.e., methylmalonic acidemia, propionic acidemia). This review focuses on principles of diagnosis, management and LT results in both paediatric and adult populations of selected liver-based monogenic diseases, which represent examples of different transplantation strategies, driven by the understanding of the expression of the underlying genetic defect.
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Affiliation(s)
- Stefano Fagiuoli
- Gastroenterology and Transplant Hepatology, Ospedale Papa Giovanni XXIII, Bergamo, Italy.
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22
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Abstract
The discovery of the enzymatic formation of lactic acid from methylglyoxal dates back to 1913 and was believed to be associated with one enzyme termed ketonaldehydemutase or glyoxalase, the latter designation prevailed. However, in 1951 it was shown that two enzymes were needed and that glutathione was the required catalytic co-factor. The concept of a metabolic pathway defined by two enzymes emerged at this time. Its association to detoxification and anti-glycation defence are its presently accepted roles, since methylglyoxal exerts irreversible effects on protein structure and function, associated with misfolding. This functional defence role has been the rationale behind the possible use of the glyoxalase pathway as a therapeutic target, since its inhibition might lead to an increased methylglyoxal concentration and cellular damage. However, metabolic pathway analysis showed that glyoxalase effects on methylglyoxal concentration are likely to be negligible and several organisms, from mammals to yeast and protozoan parasites, show no phenotype in the absence of one or both glyoxalase enzymes. The aim of the present review is to show the evolution of thought regarding the glyoxalase pathway since its discovery 100 years ago, the current knowledge on the glyoxalase enzymes and their recognized role in the control of glycation processes.
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Zhang F, Hu C, Dong Y, Lin MS, Liu J, Jiang X, Ge Y, Guo Y. The impact of V30A mutation on transthyretin protein structural stability and cytotoxicity against neuroblastoma cells. Arch Biochem Biophys 2013; 535:120-7. [DOI: 10.1016/j.abb.2013.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/16/2022]
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Gomes RA, Franco C, Da Costa G, Planchon S, Renaut J, Ribeiro RM, Pinto F, Silva MS, Coelho AV, Freire AP, Cordeiro C. The proteome response to amyloid protein expression in vivo. PLoS One 2012. [PMID: 23185553 PMCID: PMC3503758 DOI: 10.1371/journal.pone.0050123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Protein misfolding disorders such as Alzheimer, Parkinson and transthyretin amyloidosis are characterized by the formation of protein amyloid deposits. Although the nature and location of the aggregated proteins varies between different diseases, they all share similar molecular pathways of protein unfolding, aggregation and amyloid deposition. Most effects of these proteins are likely to occur at the proteome level, a virtually unexplored reality. To investigate the effects of an amyloid protein expression on the cellular proteome, we created a yeast expression system using human transthyretin (TTR) as a model amyloidogenic protein. We used Saccharomyces cerevisiae, a living test tube, to express native TTR (non-amyloidogenic) and the amyloidogenic TTR variant L55P, the later forming aggregates when expressed in yeast. Differential proteome changes were quantitatively analyzed by 2D-differential in gel electrophoresis (2D-DIGE). We show that the expression of the amyloidogenic TTR-L55P causes a metabolic shift towards energy production, increased superoxide dismutase expression as well as of several molecular chaperones involved in protein refolding. Among these chaperones, members of the HSP70 family and the peptidyl-prolyl-cis-trans isomerase (PPIase) were identified. The latter is highly relevant considering that it was previously found to be a TTR interacting partner in the plasma of ATTR patients but not in healthy or asymptomatic subjects. The small ubiquitin-like modifier (SUMO) expression is also increased. Our findings suggest that refolding and degradation pathways are activated, causing an increased demand of energetic resources, thus the metabolic shift. Additionally, oxidative stress appears to be a consequence of the amyloidogenic process, posing an enhanced threat to cell survival.
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Affiliation(s)
- Ricardo A Gomes
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal
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Optimization of time-course experiments for kinetic model discrimination. PLoS One 2012; 7:e32749. [PMID: 22403703 PMCID: PMC3293846 DOI: 10.1371/journal.pone.0032749] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Accepted: 02/03/2012] [Indexed: 11/19/2022] Open
Abstract
Systems biology relies heavily on the construction of quantitative models of biochemical networks. These models must have predictive power to help unveiling the underlying molecular mechanisms of cellular physiology, but it is also paramount that they are consistent with the data resulting from key experiments. Often, it is possible to find several models that describe the data equally well, but provide significantly different quantitative predictions regarding particular variables of the network. In those cases, one is faced with a problem of model discrimination, the procedure of rejecting inappropriate models from a set of candidates in order to elect one as the best model to use for prediction. In this work, a method is proposed to optimize the design of enzyme kinetic assays with the goal of selecting a model among a set of candidates. We focus on models with systems of ordinary differential equations as the underlying mathematical description. The method provides a design where an extension of the Kullback-Leibler distance, computed over the time courses predicted by the models, is maximized. Given the asymmetric nature this measure, a generalized differential evolution algorithm for multi-objective optimization problems was used. The kinetics of yeast glyoxalase I (EC 4.4.1.5) was chosen as a difficult test case to evaluate the method. Although a single-substrate kinetic model is usually considered, a two-substrate mechanism has also been proposed for this enzyme. We designed an experiment capable of discriminating between the two models by optimizing the initial substrate concentrations of glyoxalase I, in the presence of the subsequent pathway enzyme, glyoxalase II (EC 3.1.2.6). This discriminatory experiment was conducted in the laboratory and the results indicate a two-substrate mechanism for the kinetics of yeast glyoxalase I.
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Abstract
There has been much progress in our understanding of transthyretin (TTR)-related amyloidosis including familial amyloidotic polyneuropathy (FAP), senile systemic amyloidosis and its related disorders from many clinical and experimental aspects. FAP is an inherited severe systemic amyloidosis caused by mutated TTR, and characterized by amyloid deposition mainly in the peripheral nervous system and the heart. Liver transplantation is the only available treatment for the disease. FAP is now recognized not to be a rare disease, and to have many variations based on genetical and biochemical variations of TTR. This chapter covers the recent advances in the clinical and pathological aspects of, and therapeutic approaches to FAP, and the trend as to the molecular pathogenesis of TTR.
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Affiliation(s)
- Takamura Nagasaka
- Department of Neurology, University of Yamanashi, 1110 Shimokato, 409-3898, Chuou-city, Yamanashi, Japan,
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