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Gewählte Publikation:

SHR Neuro Krebs Kardio Lipid Stoffw Microb

Ulz, P; Thallinger, GG; Auer, M; Graf, R; Kashofer, K; Jahn, SW; Abete, L; Pristauz, G; Petru, E; Geigl, JB; Heitzer, E; Speicher, MR.
Inferring expressed genes by whole-genome sequencing of plasma DNA.
Nat Genet. 2016; 48(10):1273-1278 Doi: 10.1038/ng.3648
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Führende Autor*innen der Med Uni Graz
Speicher Michael
Ulz Peter
Co-Autor*innen der Med Uni Graz
Abete Luca
Auer Martina
Geigl Jochen Bernd
Graf Ricarda
Heitzer Ellen
Jahn Stephan
Kashofer Karl
Petru Edgar
Pristauz-Telsnigg Gunda

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The analysis of cell-free DNA (cfDNA) in plasma represents a rapidly advancing field in medicine. cfDNA consists predominantly of nucleosome-protected DNA shed into the bloodstream by cells undergoing apoptosis. We performed whole-genome sequencing of plasma DNA and identified two discrete regions at transcription start sites (TSSs) where nucleosome occupancy results in different read depth coverage patterns for expressed and silent genes. By employing machine learning for gene classification, we found that the plasma DNA read depth patterns from healthy donors reflected the expression signature of hematopoietic cells. In patients with cancer having metastatic disease, we were able to classify expressed cancer driver genes in regions with somatic copy number gains with high accuracy. We were able to determine the expressed isoform of genes with several TSSs, as confirmed by RNA-seq analysis of the matching primary tumor. Our analyses provide functional information about cells releasing their DNA into the circulation.
Find related publications in this database (using NLM MeSH Indexing)
DNA - blood
Female -
Gene Expression -
Genome, Human -
Humans -
Male -
Neoplasms - blood
Neoplasms - genetics
Nucleosomes - genetics
RNA - blood
Sequence Analysis, DNA -
Transcription Initiation Site -

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