Gotowe bibliografie tematyczne / IgG N-glycome

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Gotowa bibliografia na temat „IgG N-glycome”

Autor: Grafiati

Data publikacji: 23 sierpnia 2023

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Artykuły w czasopismach na temat "IgG N-glycome"

Hanić, Maja, Frano Vučković, Helena Deriš, Claire Bewshea, Simeng Lin, James R. Goodhand, Tariq Ahmad, Irena Trbojević-Akmačić, Nicholas A. Kennedy i Gordan Lauc. "Anti-TNF Biologicals Enhance the Anti-Inflammatory Properties of IgG N-Glycome in Crohn’s Disease". Biomolecules 13, nr 6 (7.06.2023): 954. http://dx.doi.org/10.3390/biom13060954.

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Crohn’s disease (CD) is a chronic inflammation of the digestive tract that significantly impairs patients’ quality of life and well-being. Anti-TNF biologicals revolutionised the treatment of CD, yet many patients do not adequately respond to such therapy. Previous studies have demonstrated a pro-inflammatory pattern in the composition of CD patients’ immunoglobulin G (IgG) N-glycome compared to healthy individuals. Here, we utilised the high-throughput UHPLC method for N-glycan analysis to explore the longitudinal effect of the anti-TNF drugs infliximab and adalimumab on N-glycome composition of total serum IgG in 198 patients, as well as the predictive potential of IgG N-glycans at baseline to detect primary non-responders to anti-TNF therapy in 1315 patients. We discovered a significant decrease in IgG agalactosylation and an increase in monogalactosylation, digalactosylation and sialylation during the 14 weeks of anti-TNF treatment, regardless of therapy response, all of which suggested a diminished inflammatory environment in CD patients treated with anti-TNF therapy. Furthermore, we observed that IgG N-glycome might contain certain information regarding the anti-TNF therapy outcome before initiating the treatment. However, it is impossible to predict future primary non-responders to anti-TNF therapy based solely on IgG N-glycome composition at baseline.

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Font, Guillaume, Marie-Laure Walet-Balieu, Marie Petit, Carole Burel, Maud Maho-Vaillant, Vivien Hébert, Philippe Chan i in. "IgG N-Glycosylation from Patients with Pemphigus Treated with Rituximab". Biomedicines 10, nr 8 (22.07.2022): 1774. http://dx.doi.org/10.3390/biomedicines10081774.

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Pemphigus is a life-threatening auto-immune blistering disease of the skin and mucous membrane that is caused by the production of auto-antibodies (auto-Abs) directed against adhesion proteins: desmoglein 1 and 3. We demonstrated in the “Ritux3” trial, the high efficacy of rituximab, an anti-CD20 recombinant monoclonal antibody, as the first-line treatment for pemphigus. However, 25% of patients relapsed during the six-month period after rituximab treatment. These early relapses were associated with a lower decrease in anti-desmoglein auto-Abs after the initial cycle of rituximab. The N-glycosylation of immunoglobulin-G (IgG) can affect their affinity for Fc receptors and their serum half-life. We hypothesized that the extended half-life of Abs could be related to modifications of IgG N-glycans. The IgG N-glycome from pemphigus patients and its evolution under rituximab treatment were analyzed. Pemphigus patients presented a different IgG N-glycome than healthy donors, with less galactosylated, sialylated N-glycans, as well as a lower level of N-glycans bearing an additional N-acetylglucosamine. IgG N-glycome from patients who achieved clinical remission was not different to the one observed at baseline. Moreover, our study did not identify the N-glycans profile as discriminating between relapsing and non-relapsing patients. We report that pemphigus patients present a specific IgG N-glycome. The changes observed in these patients could be a biomarker of autoimmunity susceptibility rather than a sign of inflammation.

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Radovani, Barbara, Frano Vučković, Aldo P. Maggioni, Ele Ferrannini, Gordan Lauc i Ivan Gudelj. "IgG N-Glycosylation Is Altered in Coronary Artery Disease". Biomolecules 13, nr 2 (16.02.2023): 375. http://dx.doi.org/10.3390/biom13020375.

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Coronary artery disease (CAD) is the most common cardiovascular disease (CVD), and previous studies have shown a significant association between N-glycosylation, a highly regulated posttranslational modification, and the development of atherosclerotic plaques. Our aim was to determine whether the N-glycome of immunoglobulin G (IgG) is associated with CAD, as N-glycans are known to alter the effector functions of IgG, which may enhance the inflammatory response in CAD. Therefore, in this study, we isolated IgG from subjects with coronary atherosclerosis (CAD+) and from subjects with clean coronaries (CAD−). The purified IgGs were denatured and enzymatically deglycosylated, and the released and fluorescently labelled N-glycans were analysed by ultra-high performance liquid chromatography based on hydrophilic interactions with fluorescence detection (HILIC-UHPLC-FLR). Sex-stratified analysis of 316 CAD− and 156 CAD+ cases revealed differences in IgG N-glycome composition. The most notable differences were observed in women, where the presence of sialylated N-glycan structures was negatively associated with CAD. The obtained chromatograms provide insight into the IgG N-glycome composition in CAD as well as the biomarker potential of IgG N-glycans in CAD.

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Cvetko, Ana, Domagoj Kifer, Olga Gornik, Lucija Klarić, Elizabeth Visser, Gordan Lauc, James F. Wilson i Tamara Štambuk. "Glycosylation Alterations in Multiple Sclerosis Show Increased Proinflammatory Potential". Biomedicines 8, nr 10 (13.10.2020): 410. http://dx.doi.org/10.3390/biomedicines8100410.

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Multiple sclerosis (MS) is an inflammatory autoimmune disorder affecting the central nervous system (CNS), with unresolved aetiology. Previous studies have implicated N-glycosylation, a highly regulated enzymatic attachment of complex sugars to targeted proteins, in MS pathogenesis. We investigated individual variation in N-glycosylation of the total plasma proteome and of IgG in MS. Both plasma protein and IgG N-glycans were chromatographically profiled and quantified in 83 MS cases and 88 age- and sex-matched controls. Comparing levels of glycosylation features between MS cases and controls revealed that core fucosylation (p = 6.96 × 10−3) and abundance of high-mannose structures (p = 1.48 × 10−2) were the most prominently altered IgG glycosylation traits. Significant changes in plasma protein N-glycome composition were observed for antennary fucosylated, tri- and tetrasialylated, tri- and tetragalactosylated, high-branched N-glycans (p-value range 1.66 × 10−2–4.28 × 10−2). Classification performance of N-glycans was examined by ROC curve analysis, resulting in an AUC of 0.852 for the total plasma N-glycome and 0.798 for IgG N-glycome prediction models. Our results indicate that multiple aspects of protein glycosylation are altered in MS, showing increased proinflammatory potential. N-glycan alterations showed substantial value in classification of the disease status, nonetheless, additional studies are warranted to explore their exact role in MS development and utility as biomarkers.

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Meng, Xiaoni, Manshu Song, Marija Vilaj, Jerko Štambuk, Mamatyusupu Dolikun, Jie Zhang, Di Liu i in. "Glycosylation of IgG Associates with Hypertension and Type 2 Diabetes Mellitus Comorbidity in the Chinese Muslim Ethnic Minorities and the Han Chinese". Journal of Personalized Medicine 11, nr 7 (29.06.2021): 614. http://dx.doi.org/10.3390/jpm11070614.

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Objectives: Hypertension and type 2 diabetes mellitus comorbidity (HDC) is common, which confers a higher risk of cardiovascular disease than the presence of either condition alone. Describing the underlying glycomic changes of immunoglobulin G (IgG) that predispose individuals to HDC may help develop novel protective immune-targeted and anti-inflammatory therapies. Therefore, we investigated glycosylation changes of IgG associated with HDC. Methods: The IgG N-glycan profiles of 883 plasma samples from the three northwestern Chinese Muslim ethnic minorities and the Han Chinese were analyzed by ultra-performance liquid chromatography instrument. Results: We found that 12 and six IgG N-glycan traits showed significant associations with HDC in the Chinese Muslim ethnic minorities and the Han Chinese, respectively, after adjustment for potential confounders and false discovery rate. Adding the IgG N-glycan traits to the baseline models, the area under the receiver operating characteristic curves (AUCs) of the combined models differentiating HDC from hypertension (HTN), type 2 diabetes mellitus (T2DM), and healthy individuals were 0.717, 0.747, and 0.786 in the pooled samples of Chinese Muslim ethnic minorities, and 0.828, 0.689, and 0.901 in the Han Chinese, respectively, showing improved discriminating performance than both the baseline models and the glycan-based models. Conclusion: Altered IgG N-glycan profiles were shown to associate with HDC, suggesting the involvement of inflammatory processes of IgG glycosylation. The alterations of IgG N-glycome, illustrated here for the first time in HDC, demonstrate a biomarker potential, which may shed light on future studies investigating their potential for monitoring or preventing the progression from HTN or T2DM towards HDC.

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Blomme, Bram, Christophe Van Steenkiste, Paola Grassi, Stuart M. Haslam, Anne Dell, Nico Callewaert i Hans Van Vlierberghe. "Alterations of serum protein N-glycosylation in two mouse models of chronic liver disease are hepatocyte and not B cell driven". American Journal of Physiology-Gastrointestinal and Liver Physiology 300, nr 5 (maj 2011): G833—G842. http://dx.doi.org/10.1152/ajpgi.00228.2010.

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N-glycosylation of immunoglobulin G (IgG) has an important impact on the modification of the total serum N-glycome in chronic liver patients. Our aim was to determine the role and magnitude of the alterations in which hepatocytes and B cells are involved in two mouse models of chronic liver disease. Common bile duct ligation (CBDL) and subcutaneous injections with CCl4 were induced in B cell-deficient and wild-type (WT) mice. IgG depletion was performed with beads covered with protein A/G and the depletions were evaluated by SDS-PAGE and Western blot analysis. N-glycan analysis was performed by improved DSA-FACE technology. Structural analysis of the mouse serum N-glycans was performed by exoglycosidase digests and MALDI-TOF mass spectrometry of permethylated glycans. The alterations seen in B cell-deficient mice closely resembled the alterations in WT mice, in both the CBDL and the CCl4 models. N-glycan analysis of the IgG fraction in both mouse models revealed different changes compared with humans. Overall, the impact of IgG glycosylation on total serum glycosylation was marginal. Interestingly, the amount of fibrosis present in CBDL B cell-deficient mice was significantly increased compared with CBDL WT mice, whereas the opposite was true for the CCl4 model as determined by Sirius red staining. However, this had no major effect on the alteration of N-glycosylation of serum proteins. Alterations of total serum N-glycome in mouse models of chronic liver disease are hepatocyte-driven. Undergalactosylation of IgG is not present in mouse models of chronic liver disease.

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Pučić, Maja, Ana Mužinić, Mislav Novokmet, Marijana Škledar, Nela Pivac, Gordan Lauc i Olga Gornik. "Changes in plasma and IgG N-glycome during childhood and adolescence". Glycobiology 22, nr 7 (16.03.2012): 975–82. http://dx.doi.org/10.1093/glycob/cws062.

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Simunovic, Jelena, Marija Vilaj, Irena Trbojevic-Akmacic, Ana Momcilovic, Frano Vuckovic, Ivan Gudelj, Julija Juric, Natali Nakic, Gordan Lauc i Marija Pezer. "Comprehensive N-glycosylation analysis of immunoglobulin G from dried blood spots". Glycobiology 29, nr 12 (30.05.2019): 817–21. http://dx.doi.org/10.1093/glycob/cwz061.

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Abstract Immunoglobulin G (IgG) glycans are emerging as a new putative biomarker for biological age and different diseases, requiring a robust workflow for IgG glycome analysis, ideally beginning with a simple and undemanding sampling procedure. Here, we report the first comprehensive study on total N-glycans of IgG isolated from dried blood spots (DBSs), which was performed in a high-throughput mode. We compared the IgG N-glycan profiles originating from DBS with those originating from plasma, compared different media for DBS collection, evaluated analytical variation and assessed IgG N-glycan profile stability for different storage conditions. In conclusion, we show that DBSs are a good and stable source material for a robust IgG N-glycan analysis by ultra-performance liquid chromatography, suitable for blood sampling in conditions where no trained personnel and necessary laboratory equipment are available.

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Singh, Sunny S., Ralph Heijmans, Claudia K. E. Meulen, Aloysius G. Lieverse, Olga Gornik, Eric J. G. Sijbrands, Gordan Lauc i Mandy van Hoek. "Association of the IgG N-glycome with the course of kidney function in type 2 diabetes". BMJ Open Diabetes Research & Care 8, nr 1 (kwiecień 2020): e001026. http://dx.doi.org/10.1136/bmjdrc-2019-001026.

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IntroductionInflammatory processes are thought to be involved in kidney function decline in individuals with type 2 diabetes. Glycosylation of immunoglobulin G (IgG) is an important post-translation process affecting the inflammatory potential of IgG. We investigated the prospective relationship between IgG N-glycosylation patterns and kidney function in type 2 diabetes.Research design and methodsIn the DiaGene study, an all-lines-of-care case–control study (n=1886) with mean prospective follow-up of 7.0 years, the association between 58 IgG N-glycan profiles and estimated glomerular filtration rate (eGFR) and albumin-to-creatinine ratio (ACR) per year and during total follow-up was analyzed. Models were adjusted for clinical variables and multiple comparisons.ResultsEleven traits were significantly associated with eGFR change per year. Bisecting GlcNAc in fucosylated and fucosylated disialylated structures and monosialylation of fucosylated digalactosylated structures were associated with a faster decrease of eGFR. Fucosylation of neutral and monogalactosylated structures was associated with less eGFR decline per year. No significant associations between IgG glycans and ACR were found.ConclusionsIn type 2 diabetes, we found IgG N-glycosylation patterns associated with a faster decline of kidney function, reflecting a pro-inflammatory state of IgG. eGFR, but not ACR, was associated with IgG glycans, which suggests these associations may represent renal macroangiopathy rather than microvascular disease.

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Plećaš, Doris, Nikol Mraz, Anne Marie Patanaude, Tea Pribić, Ivana Pavlinac Dodig, Renata Pecotić, Gordan Lauc, Ozren Polašek i Zoran Đogaš. "Not-So-Sweet Dreams: Plasma and IgG N-Glycome in the Severe Form of the Obstructive Sleep Apnea". Biomolecules 13, nr 6 (23.05.2023): 880. http://dx.doi.org/10.3390/biom13060880.

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Obstructive sleep apnea (OSA) is a prevalent disease associated with increased risk for cardiovascular and metabolic diseases and shortened lifespan. The aim of this study was to explore the possibility of using N-glycome as a biomarker for the severe form of OSA. Seventy subjects who underwent a whole-night polysomnography/polygraphy and had apnea–hypopnea index (AHI) over 30 were compared to 23 controls (AHI under 5). Plasma samples were used to extract 39 glycan peaks using ultra-high-performance liquid chromatography (UPLC) and 27 IgG peaks using capillary gel electrophoresis (CGE). We also measured glycan age, a molecular proxy for biological aging. Three plasma and one IgG peaks were significant in a multivariate model controlling for the effects of age, sex, and body mass index. These included decreased GP24 (disialylated triantennary glycans as major structure) and GP28 (trigalactosylated, triantennary, disialylated, and trisialylated glycans), and increased GP32 (trisialylated triantennary glycan). Only one IgG glycan peak was significantly increased (P26), which contains biantennary digalactosylated glycans with core fucose. Patients with severe OSA exhibited accelerated biological aging, with a median of 6.9 years more than their chronological age (p < 0.001). Plasma N-glycome can be used as a biomarker for severe OSA.

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Rozprawy doktorskie na temat "IgG N-glycome"

Schwedler, Christian [Verfasser]. "Optimized N-glycome analysis of human IgG- and total serum by capillary electrophoresis laser-induced fluorescence: applications for epithelial ovarian cancer and rheumatoid arthritis / Christian Schwedler". Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1176707175/34.

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Części książek na temat "IgG N-glycome"

Pučić-Baković, Maja. "High-Throughput Analysis of the IgG N-Glycome by UPLC-FLR". W Methods in Molecular Biology, 21–29. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-6493-2_3.

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Schwedler, Christian, i Véronique Blanchard. "Measurement of Neutral and Sialylated IgG n-Glycome at Asn-297 by CE-LIF to Assess Hypogalactosylation in Rheumatoid Arthritis". W Methods in Molecular Biology, 77–93. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9213-3_6.

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