Gene Expression Profiling of Low Dose Exposure of Saturated Aliphatic Aldehydes in A549 Human Alveolar Epithelial Cells

Title
Gene Expression Profiling of Low Dose Exposure of Saturated Aliphatic Aldehydes in A549 Human Alveolar Epithelial Cells
Authors
이효선윤지성송미신찬영정학숙류재천
Keywords
Aldehydes; A549; Microarray; Gene ontology
Issue Date
2012-12
Publisher
Toxicology and environmental health sciences
Citation
VOL 4, NO 4, 211-217
Abstract
Low-molecular weight saturated aliphatic aldehydes (LSAAs), which include propanal, butanal, pentanal, hexanal, octanal, nonanal and heptanal, are volatile organic compounds (VOCs). They are ubiquitous in the environment of our daily life. Although LSAAs are harmful, with mutagenic and carcinogenic effects, the mechanisms underlying the toxicity of volatile aldehydes are still unclear. Therefore, in this study, we performed genome-wide expression profile analysis of A549 human alveolar epithelial cells exposed to seven LSSAs. We selected genes whose expression was changed more than 1.5-fold in A549 cells exposed to LSAAs by analysis of gene expression profiles using human oligonucleotide chips. Through gene expression profiling, we showed that LSSAs are related to the key biological processes “defense response”, “inflammatory response” and “immune response” in gene ontology (GO) analysis. In addition, we identified two genes that were up-regulated (GREB1, BC009808) and four that were down-regulated (UCP1, TCP11, FNDC3A, LOC645206) by all the tested LSAAs. Our data suggest that LSAAs exert toxic effects on A549 cells by modulating mRNA expression. Moreover, we suggest that genes expressed in response to LSAAs represent a molecular signature that can be widely used, in combination with more traditional techniques, to assess and predict the toxicity caused by exposure to LSAAs.
URI
http://pubs.kist.re.kr/handle/201004/46480
ISSN
20059752
Appears in Collections:
KIST Publication > Article
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