Molecular signatures in IASLC/ATS/ERS classified growth patterns of lung adenocarcinoma

Background The current classification of human lung adenocarcinoma defines five different histological growth patterns within the group of conventional invasive adenocarcinomas. The five growth patterns are characterised by their typical architecture, but also by variable tumor biological behaviour....

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Hauptverfasser: Zabeck, Heike (VerfasserIn) , Dienemann, Hendrik (VerfasserIn) , Hoffmann, Hans (VerfasserIn) , Pfannschmidt, Joachim (VerfasserIn) , Warth, Arne (VerfasserIn) , Schnabel, Philipp Albert (VerfasserIn) , Muley, Thomas (VerfasserIn) , Meister, Michael (VerfasserIn) , Sültmann, Holger (VerfasserIn) , Fröhlich, Holger (VerfasserIn) , Kuner, Ruprecht (VerfasserIn) , Lasitschka, Felix (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: October 23, 2018
In: PLOS ONE
Year: 2018, Jahrgang: 13, Heft: 10
ISSN:1932-6203
DOI:10.1371/journal.pone.0206132
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1371/journal.pone.0206132
Verlag, lizenzpflichtig, Volltext: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0206132
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Verfasserangaben:Heike Zabeck, Hendrik Dienemann, Hans Hoffmann, Joachim Pfannschmidt, Arne Warth, Philipp A. Schnabel, Thomas Muley, Michael Meister, Holger Sültmann, Holger Fröhlich, Ruprecht Kuner, Felix Lasitschka

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245 1 0 |a Molecular signatures in IASLC/ATS/ERS classified growth patterns of lung adenocarcinoma  |c Heike Zabeck, Hendrik Dienemann, Hans Hoffmann, Joachim Pfannschmidt, Arne Warth, Philipp A. Schnabel, Thomas Muley, Michael Meister, Holger Sültmann, Holger Fröhlich, Ruprecht Kuner, Felix Lasitschka 
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520 |a Background The current classification of human lung adenocarcinoma defines five different histological growth patterns within the group of conventional invasive adenocarcinomas. The five growth patterns are characterised by their typical architecture, but also by variable tumor biological behaviour. Aims The aim of this study was to identify specific gene signatures of the five adenocarcinoma growth patterns defined by the joint IASLC/ATS/ERS working group. Methods Total RNA from microdissected adenocarcinoma tissue samples of ten lepidic, ten acinar, ten solid, nine papillary, and nine micropapillary tumor portions was isolated and prepared for gene expression analysis. Differential expression of genes was determined using the R package “LIMMA”. The overall significance of each signature was assessed via global test. Gene ontology statistics were analysed using GOstat. For immunohistochemical validation, tissue specimens from 20 tumors with solid and 20 tumors with lepidic growth pattern were used. Results Microarray analyses between the growth patterns resulted in numerous differentially expressed genes between the solid architecture and other patterns. The comparison of transcriptomic activity in the solid and lepidic patterns revealed 705 up- and 110 downregulated non-redundant genes. The pattern-specific protein expression of Inositol-1,4,5-trisphosphate-kinase-A (ITPKA) and angiogenin by immunohistochemistry confirmed the RNA levels. The strongest differences in protein expression between the two patterns were shown for ITPKA (p = 0.02) and angiogenin (p = 0.113). Conclusions In this study growth pattern-specific gene signatures in pulmonary adenocarcinoma were identified and distinct transcriptomic differences between lung adenocarcinoma growth patterns were defined. The study provides valuable new information about pulmonary adenocarcinoma and allows a better assessment of the five adenocarcinoma subgroups. 
650 4 |a Adenocarcinoma of the lung 
650 4 |a Adenocarcinomas 
650 4 |a Gene expression 
650 4 |a Gene ontologies 
650 4 |a Lung and intrathoracic tumors 
650 4 |a Microarrays 
650 4 |a Secondary lung tumors 
650 4 |a Transcriptome analysis 
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