Összesen 4 találat.


001-es BibID:BIBFORM094352
035-os BibID:(cikkazonosító)5058 (scopus)85105433955 (wos)000662004700001
Első szerző:Géczi Dóra (biotechnológus)
Cím:Analysis of Circulating miRNA Profile in Plasma Samples of Glioblastoma Patients / Dóra Géczi, Bálint Nagy, Melinda Szilágyi, András Penyige, Álmos Klekner, Adrienn Jenei, József Virga, Zsuzsanna Birkó
ISSN:1661-6596 1422-0067
Megjegyzések:Background: Glioblastoma multiforme (GBM) is among the most aggressive cancers with a poor prognosis. Treatment options are limited, clinicians lack efficient prognostic and predictive markers. Circulating miRNAs?besides being important regulators of cancer development?may have potential as diagnostic biomarkers of GBM. (2) Methods: In this study, profiling of 798 human miRNAs was performed on blood plasma samples from 6 healthy individuals and 6 patients with GBM, using a NanoString nCounter Analysis System. To validate our results, five miRNAs (hsa-miR-433-3p, hsa-miR-362-3p, hsa-miR-195-5p, hsa-miR-133a-3p, and hsa-miR-29a-3p) were randomly chosen for RT-qPCR detection. (3) Results: In all, 53 miRNAs were significantly differentially expressed in plasma samples of GBM patients when data were filtered for FC 1 and FDR 0.1. Target genes of the top 39 differentially expressed miRNAs were identified, and we carried out functional annotation and pathway enrichment analysis of target genes via GO and KEGG-based tools. General and cortex-specific protein?protein interaction networks were constructed from the target genes of top miRNAs to assess their functional connections. (4) Conclusions: We demonstrated that plasma microRNA profiles are promising diagnostic and prognostic molecular biomarkers that may find an actual application in the clinical practice of GBM, although more studies are needed to validate our results.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
circulating miRNA
blood plasma
network analysis
Megjelenés:International Journal Of Molecular Sciences. - 22 : 10 (2021), p. 1-20. -
További szerzők:Nagy Bálint (1956-) (molekuláris genetikus) Szilágyi Melinda (1984-) (biológus) Penyige András (1954-) (molekuláris genetikus) Klekner Álmos (1970-) (idegsebész) Jenei Adrienn (1978-) (biológus, kémikus) Virga József (1989-) Hádáné Birkó Zsuzsanna (1971-) (molekuláris genetikus)
Pályázati támogatás:2017-1.2.1-NKP-2017-00002
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001-es BibID:BIBFORM009630
Első szerző:Hádáné Birkó Zsuzsanna (molekuláris genetikus)
Cím:Lack of A-factor production induces the expression of nutrient scavenging and stress-related proteins in Streptomyces griseus / Birkó Zsuzsanna, Swiatek Magdalena, Szájli Emília, Medzihradszky F. Katalin, Vijgenboom Erik, Penyige András, Keserű Judit, van Wezel Gilles P., Biró Sándor
ISSN:1535-9476 (Print)
Megjegyzések:The small gamma-butyrolactone A-factor is an important autoregulatory signaling molecule for the soil-inhabiting streptomycetes. Starvation is a major trigger for development,and nutrients are provided by degradation of the vegetative mycelium via a process of programmed cell death, reusing proteins, nucleic acids, and cell wall material. The A-factor regulon includes many extracellular hydrolases. Here we show via proteomics analysis that many nutrientscavenging and stress-related proteins were overexpressed in an A-factor non-producing mutant of Streptomyces griseus B-2682. Transcript analysis showed that this is primarily due to differential transcription of the target genes during early development. The targets include proteins relating to nutrient stress and environmental stress and an orthologue of the Bacillus sporulation control protein Spo0M. The enhanced expression of these proteins underlines the stress that is generated by the absence of A-factor. Wild-type developmental gene expression was restored to the A-factor non-producing mutant by the signaling protein Factor C in line with our earlier observation that Factor C triggers A-factor production.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Streptomyces griseus
Megjelenés:Molecular and Cellular Proteomics : MCP - 8 : 10 (2009), p. 2396-2403. -
További szerzők:Swiatek, Magdalena Szájli Emília Medzihradszky-Fölkl Katalin Vijgenboom, Erik Penyige András (1954-) (molekuláris genetikus) Keserű Judit (1976-) (molekuláris genetikus) Wezel, Gilles P., van Biró Sándor (1949-) (molekuláris genetikus)
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001-es BibID:BIBFORM001540
Első szerző:Hádáné Birkó Zsuzsanna (molekuláris genetikus)
Cím:The secreted signaling protein factor C triggers the A-factor response regulon in streptomyces griseus : overlapping signaling routes / Birkó Z., Bialek S., Buzás K., Szájli E., Traag B. A., Medzihradszky K. F., Rigali S., Vijgenboom E., Penyige A., Kele Z., van Wezel G. P., Bíró S.
Megjegyzések:Members of the prokaryotic genus Streptomyces produce over 60% of all known antibiotics and a wide range of industrial enzymes. A leading theme in microbiology is which signals are received and transmitted by these organisms to trigger the onset of morphological differentiation and antibiotic production. The small -butyrolactone A-factor is an important autoregulatory signaling molecule in streptomycetes, and A-factor mutants are blocked in development and antibiotic production. In this study we showed that heterologous expression of the 324-amino acid secreted regulatory protein Factor C resulted in restoration of development and enhanced antibiotic production of an A-factor-deficient bald mutant of Streptomyces griseus, although the parental strain lacks an facC gene. Proteome analysis showed that in the facC transformant the production of several secreted proteins that belong to the A-factor regulon was restored. HPLC-MS/MS analysis indicated that this was due to restoration of A-factor production to wild-type levels in the transformant. This indicates a connection between two highly divergent types of signaling molecules and possible interplay between their regulatory networks.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Streptomyces szignalizáció
Megjelenés:Molecular and Cellular Proteomics : MCP - 6 : 7 (2007), p. 1248-1256. -
További szerzők:Bialek, Sylwia Buzás Krisztina Szájli Emília Traag, Bjorn A. Medzihradszky-Fölkl Katalin Rigali, Sebastien Vijgenboom, Erik Kele Zoltán Wezel, Gilles P., van Biró Sándor (1949-) (molekuláris genetikus) Penyige András (1954-) (molekuláris genetikus)
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001-es BibID:BIBFORM073381
035-os BibID:(cikkazonosító)E-P18.36 (WoS)000489312608202
Első szerző:Keserű Judit (molekuláris genetikus)
Cím:Determination of miR-196a Single Nucleotide Polymorphism (SNP) with melting-curve analysis in the population of patients with ovarian cancer / J. S. Keserű, J. Lukács, B. Soltész, K. Szirák, Z. Birkó, A. Penyige, B. Nagy, R. Póka
ISSN:1018-4813 1476-5438
Megjegyzések:Introduction: miRNA molecules are short, non-coding sequences regulating gene expression after transcription. They are important in the development, progression and treatability of tumours. Single Nucleotide Polymorphism (SNP) is the most frequent type of genetic polymorphism. That is true also for miRNAs and their polymorphisms can cause alterations in the gene expression profile. miR-196a was also linked to the genesis of different tumours.Aim: Search for correlation between miR-196a polymorphism and development of ovarian cancer.Materials and Methods: 75 patients with ovarian cancer and 75 healthy persons were investigated. 15-16 mL blood anticoagulated with EDTA was drawn. DNA was isolated with silica absorption method and the melting curve of PCR products generated with LightSnip kit (TibMolbiol, Berlin, Germany) developed for miR-196a (rs11614913) SNP was determined by LightCycler 96 equipment. Allele and genotype frequencies were specified and Student t-test was applied for statistical analysis of data.Results: The Tm of PCR products were 55.5?C for T allele and 62.6?C for C allele with melting-curve analysis. T allele occurred in 32.66% in population of patients and in 40.66% in control group. Genotypes among control persons were 18.66% for TT, 44.0% for TC, and 37.33% CC, while in case of patients these frequencies were 12.0%, 41.33%, and 46.66%, respectively (p=0.3815).Conclusion: miR-196a influences the expression of 684 genes, it requires further complex investigation, whether it is involved in the development of ovarian cancer.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idézhető absztrakt
ovarian cancer
Megjelenés:European Journal of Human Genetics. - 26 : Suppl. (2018), p. 1. -
További szerzők:Lukács János (1975-) (szülész-nőgyógyász, genetikus) Soltész Beáta (1987-) (molekuláris biológus) Szirák Krisztina (1973-) (molekuláris genetikus) Hádáné Birkó Zsuzsanna (1971-) (molekuláris genetikus) Penyige András (1954-) (molekuláris genetikus) Nagy Bálint (1956-) (molekuláris genetikus) Póka Róbert (1960-) (szülész-nőgyógyász, klinikai onkológus)
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