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Genomic study of lung adenocarcinoma in young never-smokers

ABSTRACT: Mutational profiling of LUAC in young never-smokers

PROVIDER: PRJEB23833 | ENA |

REPOSITORIES: ENA

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Genomic study of lung adenocarcinoma in young never-smokers

Project description:Genomic study of lung adenocarcinoma in young never-smokers

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Comparative genomic hybridization of human lung adenocarcinoma in never smokers

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2010-12-31 | E-TABM-926 | biostudies-arrayexpress

CIT - Homo sapiens - APUP - Genomic aberrations in Lung Adenocarcinoma in Never Smokers

Project description:41 lung adenocarcinoma from never-smokers hybridized on Illumina SNP arrays on 13 HumanCNV370-Quadv3 chips. High-resolution array comparative genomic hybridization analysis of lung adenocarcinoma in 41 never smokers for identification of new minimal common regions (MCR) of gain or loss. The SNP array analysis validated copy-number aberrations and revealed that RB1 and WRN were altered by recurrent copy-neutral loss of heterozygosity.The present study has uncovered new aberrations containing cancer genes. The oncogene FUS is a candidate gene in the 16p region that is frequently gained in never smokers. Multiple genetic pathways defined by gains of MYC, deletions of RB1 and WRN or gains on 7p and 7q are involved in lung adenocarcinoma in never smokers. A 'Cartes d'Identite des Tumeurs' (CIT) project from the French National League Against Cancer (http://cit.ligue-cancer.net) 41 samples hybridized on Illumina SNP arrays. Submitter : Fabien PETEL petelf@ligue-cancer.net . Project leader : Pr Pierre FOURET pierre.fouret@psl.aphp.fr

2011-07-28 | E-TABM-1169 | biostudies-arrayexpress

Mutational profiling of LUAD in young never-smokers

Project description:NSCLC has been recognized as a highly heterogeneous disease with phenotypic and genotypic diversity in each subgroup. In this study, we conducted whole genome sequencing (WGS) to characterize the genomic alterations of 36 never-smoker Chinese patients with lung adenocarcinomas (LUADs). Our study provides a detailed mutational portrait of LUADs occurring in young never-smokers and gives insights into the molecular pathogenesis of this NSCLC subgroup

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Transcriptomic profiling of lung adenocarcinoma from never-smokers

Project description:Transcriptomic profiling of lung adenocarcinoma from never-smokers

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Project description:Transcriptomic profiling of lung adenocarcinoma from never-smokers

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Expression data from never smokers, smokers, and e-cig users in human bronchial epithelium

Project description:Background: Nicotine-containing electronic cigarette (e-cig) use has become widespread. However, understanding the biological impact of e-cigs compared with smoking on the lung is needed. There are major gaps in knowledge for chronic effects and for an etiology to recent acute lung toxicity leading to death among vapers. Methods: We conducted bronchoscopies in a cross-sectional study of 73 subjects (42 never-smokers, 15 e-cig users, and 16 smokers). Using bronchoalveolar lavage and brushings, we examined lung inflammation by cell counts, cytokines, genome-wide gene expression, and DNA methylation. Results: There were statistically significant differences among never-smokers, e-cig users, and smokers for inflammatory cell counts and cytokines (FDR q < 0.1). The e-cig users had values intermediate between smokers and never-smokers, with levels for most of the biomarkers more similar to never-smokers. For differential gene expression and DNA methylation, e-cig users also more like never-smokers; many of these genes corresponded to smoking-related pathways, including those for xenobiotic metabolism, aryl hydrocarbon receptor signaling, and oxidative stress. Differentially methylated genes were correlated with changes in gene expression, providing evidence for biological effects of the methylation associations. Conclusions: These data indicate that e-cigs are associated with less toxicity than cigarettes for smoking-related pathways. What is unknown may be unique effects for e-cigs not measured herein, and a comparison of smokers completely switching to e-cigs compared with former smokers. Clinical trials for smokers switching to e-cigs who undergo serial bronchoscopy and larger cross-sectional studies of former smokers with and without e-cig use, and for e-cigs who relapse back to smoking, are needed.

2026-07-01 | GSE217217 | GEO

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