DNA methylation and hydroxymethylation patterns in acute myeloid leukemia patients with mutations in DNMT3A and IDH1/2 and their combinations
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články
PubMed
30988238
DOI
10.3233/cbm-182176
PII: CBM182176
Knihovny.cz E-zdroje
- Klíčová slova
- AML, CHFR, DNMT3A and IDH1/2 mutations, GZMB, hydroxymethylation, methylation,
- MeSH
- akutní myeloidní leukemie genetika metabolismus MeSH
- DNA methyltransferasa 3A MeSH
- DNA-(cytosin-5-)methyltransferasa genetika MeSH
- granzymy genetika MeSH
- isocitrátdehydrogenasa genetika MeSH
- leukocyty mononukleární metabolismus MeSH
- lidé středního věku MeSH
- lidé MeSH
- metylace DNA * MeSH
- mutace MeSH
- prognóza MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- stanovení celkové genové exprese MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- DNA methyltransferasa 3A MeSH
- DNA-(cytosin-5-)methyltransferasa MeSH
- DNMT3A protein, human MeSH Prohlížeč
- granzymy MeSH
- GZMB protein, human MeSH Prohlížeč
- IDH1 protein, human MeSH Prohlížeč
- IDH2 protein, human MeSH Prohlížeč
- isocitrátdehydrogenasa MeSH
BACKGROUND: Aberrant epigenetic patterns are a hallmark of acute myeloid leukemia (AML). Mutations in profound epigenetic regulators DNMT3A and IDH1/2 often occur concurrently in AML. OBJECTIVES: The aim was to analyze DNA methylation, hydroxymethylation and mRNA expression profiles in AML with mutations in DNMT3A and IDH1/2 (individually and in combinations). METHODS: Infinium MethylationEPIC BeadChip (Illumina) covering 850,000 CpGs was utilized. The validation of hydroxy-/methylation data was done by pyrosequencing. HumanHT-12 v4 Expression BeadChip (Illumina) was used for expression examination. RESULTS: Hierarchical clustering analysis of DNA hydroxy-/methylation data revealed clusters corresponding to DNMT3A and IDH1/2 mutations and CD34+ healthy controls. Samples with concurrent presence of DNMT3A and IDH1/2 mutations displayed mixed DNA hydroxy-/methylation profile with preferential clustering to healthy controls. Numbers and levels of DNA hydroxymethylation were low. Uniformly hypermethylated loci in AML patients with IDH1/2 mutations were enriched for immune response and apoptosis related genes, among which hypermethylation of granzyme B (GZMB) was found to be associated with inferior overall survival of AML patients (P= 0.035). CONCLUSIONS: Distinct molecular background results in specific DNA hydroxy-/methylation profiles in AML. Site-specific DNA hydroxymethylation changes are much less frequent in AML pathogenesis compared to DNA methylation. Methylation levels of enhancer located upstream GZMB gene might contribute to AML prognostication models.
Department of Internal Medicine Hematology and Oncology University Hospital Brno Brno Czech Republic
Institute of Hematology and Blood Transfusion Prague Czech Republic
Citace poskytuje Crossref.org
DNA Methylation Validation Methods: a Coherent Review with Practical Comparison
