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Homo sapiens

ABSTRACT: Genome-wide screening of transcriptional modulation in non-smoking female lung cancer in Taiwan

OTHER RELATED OMICS DATASETS IN: E-GEOD-19804

PROVIDER: PRJNA153899 | ENA |

REPOSITORIES: ENA

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Affymetrix SNP array data for Non-Smoking Female Lung Cancer in Taiwan

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Affymetrix SNP array data for Non-Smoking Female Lung Cancer in Taiwan

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The effect of intermittent versus continuous low dose aspirin on nasal epithelium gene expression in current smokers: a randomized, double-blinded clinical study

Project description:A chemopreventive effect of aspirin (ASA) on lung cancer risk is supported by epidemiologic and preclinical studies. We conducted a randomized, double-blind, placebo controlled study in current heavy smokers to compare modulating effects of intermittent versus continuous low dose ASA on gene signatures of smoking and lung cancer from nasal brushings. Fifty-four participants were randomized to intermittent ASA (ASA 81 mg daily for one week alternating with placebo daily for one week) or continuous ASA (81 mg daily) for 12 weeks. The primary endpoint was modulation of a smoking gene signature in nasal brushings. Other [JB1] endpoints included modulation of nasal and bronchial gene signatures for smoking, lung cancer and chronic obstructive pulmonary disease (COPD) and changes in cyclooxygenase (COX)- and 5-lipoxygenase (LOX)-mediated arachidonic acid (ARA) metabolism. Low dose ASA intervention caused minimal changes in smoking and lung cancer gene signature scores in nasal epithelium of current heavy smokers. The small sample size of the intervention groups may have limited the ability to detect modulation of the gene signatures. Low dose ASA lowered urinary prostaglandin E metabolite, a marker of COX-mediated ARA metabolic pathway with no change in urinary leukotriene E4, a marker of 5-LOX-mediated pathway. Exploratory genomic analysis showed that ASA intervention induced wide-ranging genomic changes in the nasal epithelium, including modulation of the arachidonic acid pathway and wound healing. A companion study is underway using ASA plus zileuton to test dual suppression of COX- and 5-LOX-mediated pathways on these gene signature scores in current heavy smokers.

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