Összesen 3 találat.


001-es BibID:BIBFORM083028
Első szerző:Elek Zsuzsanna
Cím:High Throughput Multiplex SNP-analysis In Chronic Obstructive Pulmonary Disease and Lung Cancer / Zsuzsanna Elek, Zsuzsanna Kovács, Gergely Keszler, Miklós Szabó, Eszter Csanky, Jane Luo, András Guttman, Zsolt Rónai
Megjegyzések:Background: A number of human inflammatory diseases and tumors have been shown to cause alterations in the glycosylation pattern of plasma proteins in a specific manner. These highly variable and versatile post-translational modifications finetune protein functions by influencing sorting, folding, enzyme activity and subcellular localization. However, relatively little is known about regulatory factors of this procedure and about the accurate causative connection between glycosylation and disease. Objective: The aim of the present study was to investigate whether certain single nucleotide polymorphisms (SNPs) in genes encoding glycosyltransferases and glycosidases could be associated with elevated risk for chronic obstructive pulmonary disease (COPD) and lung adenocarcinoma. Methods: A total of 32 SNPs localized in genes related to N-glycosylation were selected for the association analysis. Polymorphisms with putative biological functions (missense or regulatory variants) were recruited. SNPs were genotyped by a TaqMan OpenArray platform. A single base extension-based method in combination with capillary gel electrophoresis was used for verification. Results: The TaqMan OpenArray approach provided accurate and reliable genotype data (global call rate: 94.9%, accuracy: 99.6%). No significant discrepancy was detected between the obtained and expected genotype frequency values (Hardy?Weinberg equilibrium) in the healthy control sample group in case of any SNP confirming reliable sampling and genotyping. Allele frequencies of the rs3944508 polymorphism localized in the 3' UTR of the MGAT5 gene significantly differed in the sample groups compared. Conclusion: Our results suggest that the rs34944508 SNP might modulate the risk for lung cancer by influencing the expression of MGAT5. This enzyme catalyzes the addition of N-acetylglucosamine (GlcNAc) in beta 1-6 linkage to the alpha-linked mannose of biantennary N-linked oligosaccharides, thus, increasing branching that is the characteristic of invasive malignancies.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
single-base primer extension
capillary gel electrophoresis
TaqMan OpenArray
lung adenocarcinoma
genetic association
Megjelenés:Current Molecular Medicine. - 20 : 3 (2020), p. 185-193. -
További szerzők:Kovács Zsuzsanna (1989-) Keszler Gergely Szabó Miklós (vegyészmérnök) Csánky Eszter (1959-) (tüdőgyógyász, klinikai immunológus, allergológus) Luo, Jane Guttman András (1954-) (vegyészmérnök) Rónai Zsolt
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001-es BibID:BIBFORM070391
035-os BibID:(Scopus)85013468469 (WOS)000408987300003
Első szerző:Kovács Zsuzsanna
Cím:Capillary electrophoresis analysis of N-glycosylation changes of serum paraproteins in multiple myeloma / Zsuzsanna Kovacs, Adam Simon, Zoltan Szabo, Zsolt Nagy, Laszlo Varoczy, Ildiko Pal, Eszter Csanky, Andras Guttman
Megjegyzések:AbstractMultiple myeloma (MM) is an immedicable malignancy of the human plasma cells producing abnormal antibodies (also referred to as paraproteins) leading to kidney problems and hyperviscosity syndrome. In this paper, we report on the N-glycosylation analysis of paraproteins from total human serum as well as the fragment crystallizable region (Fc) and fragment antigen binding (Fab) ?/? light chain fractions of papain digested immunoglobulins from multiple myeloma patients. CE-LIF detection was used for the analysis of the N-glycans after endoglycosidase (PNGase F) mediated sugar release and fluorophore labeling (APTS). While characteristic N-glycosylation pattern differences were found between normal control and untreated, treated and remission stage multiple myeloma patient samples at the global serum level, less distinctive changes were observed at the immunoglobulin level. Principal component analysis adequately differentiated the four groups (control and three patient groups) on the basis of total serum N-glycosylation analysis. 12 N-glycan features showed statistically significant differences (p <0.05) among various stages of the disease in comparison to the control at the serum level, while only six features were identified with similar significance at the immunoglobulin level, including the analysis of the partitioned Fc fragment as well as the Fab? and Fab? chains.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Electrophoresis. - 38 : 17 (2017), p. 2115-2123. -
További szerzők:Simon Ádám (1990-) (molekuláris biológus) Szabó Zoltán Nagy Zsolt Váróczy László (1974-) (belgyógyász, haematológus) Pál Ildikó (1989-) (belgyógyász szakorvos) Csánky Eszter (1959-) (tüdőgyógyász, klinikai immunológus, allergológus) Guttman András (1954-) (vegyészmérnök)
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001-es BibID:BIBFORM083098
Első szerző:Mészáros Brigitta (vegyészmérnök)
Cím:Comparative analysis of the human serum N-glycome in lung cancer, COPD and their comorbidity using capillary electrophoresis / Brigitta Mészáros, Gábor Járvás, Anna Farkas, Márton Szigeti, Zsuzsanna Kovács, Renáta Kun, Miklós Szabó, Eszter Csánky, András Guttman
Megjegyzések:Lung cancer (LC) and chronic obstructive pulmonary disease (COPD) are prevalent ailments with a great challenge to distinguish them based on symptoms only. Since they require different treatments, it is important to find non-invasive methods capable to readily diagnose them. Moreover, COPD increases the risk of lung cancer development, leading to their comorbidity. In this pilot study the N-glycosylation profile of pooled human serum samples (90 patients each) from lung cancer, COPD and comorbidity (LC with COPD) patients were investigated in comparison to healthy individuals (control) by capillary gel electrophoresis with high sensitivity laser-induced fluorescence detection. Sample preparation was optimized for human serum samples introducing a new temperature adjusted denaturation protocol to prevent precipitation and increased endoglycosidase digestion time to assure complete removal of the N-linked carbohydrates. The reproducibility of the optimized method was<3.5%. Sixty-one N-glycan structures were identified in the pooled control human serum sample and the profile was compared to pooled lung cancer, COPD and comorbidity of COPD with lung cancer patient samples. One important finding was that no other sugar structures were detected in any of the patient groups, only quantitative differences were observed. Based on this comparative exercise, a panel of 13 N-glycan structures were identified as potential glycobiomarkers to reveal significant changes (> 33% in relative peak areas) between the pathological and control samples. In addition to N-glycan profile changes, alterations in the individual N-glycan subclasses, such as total fucosylation, degree of sialylation and branching may also hold important glycobiomarker values.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Chromatography B-Analytical Technologies In The Biomedical And Life Sciences. - 1137 (2020), p. 1-7. -
További szerzők:Járvás Gábor (1982-) (vegyészmérnök) Farkas Anna (1988-) (molekuláris biológus) Szigeti Márton (1986-) (környezetmérnök) Kovács Zsuzsanna (1989-) Kun Renáta (1986-) (biotechnológus) Szabó Miklós (vegyészmérnök) Csánky Eszter (1959-) (tüdőgyógyász, klinikai immunológus, allergológus) Guttman András (1954-) (vegyészmérnök)
Pályázati támogatás:K 116263
NN 127062
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