Unknown

Dataset Information

0

Genome-wide study of DNA methylation alterations in response to diazinon exposure in vitro.


ABSTRACT: Pesticide exposure has repeatedly been associated with cancers. However, molecular mechanisms are largely undetermined. In this study, we examined whether exposure to diazinon, a common organophosphate that has been associated with cancers, could induce DNA methylation alterations. We conducted genome-wide DNA methylation analyses on DNA samples obtained from human hematopoietic K562 cell exposed to diazinon and ethanol using the Illumina Infinium HumanMethylation27 BeadChip. Bayesian-adjusted t-tests were used to identify differentially methylated gene promoter CpG sites. We identified 1069 CpG sites in 984 genes with significant methylation changes in diazinon-treated cells. Gene ontology analysis demonstrated that some genes are tumor suppressor genes, such as TP53INP1 (3.0-fold, q-value <0.001) and PTEN (2.6-fold, q-value <0.001), some genes are in cancer-related pathways, such as HDAC3 (2.2-fold, q-value=0.002), and some remain functionally unknown. Our results provided direct experimental evidence that diazinon may modify gene promoter DNA methylation levels, which may play a pathological role in cancer development.

SUBMITTER: Zhang X 

PROVIDER: S-EPMC3514648 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature

altmetric image

Publications

Genome-wide study of DNA methylation alterations in response to diazinon exposure in vitro.

Zhang Xiao X   Wallace Andrew D AD   Du Pan P   Lin Simon S   Baccarelli Andrea A AA   Jiang Hongmei H   Jafari Nadereh N   Zheng Yinan Y   Xie Hehuang H   Soares Marcelo Bento MB   Kibbe Warren A WA   Hou Lifang L  

Environmental toxicology and pharmacology 20120801 3


Pesticide exposure has repeatedly been associated with cancers. However, molecular mechanisms are largely undetermined. In this study, we examined whether exposure to diazinon, a common organophosphate that has been associated with cancers, could induce DNA methylation alterations. We conducted genome-wide DNA methylation analyses on DNA samples obtained from human hematopoietic K562 cell exposed to diazinon and ethanol using the Illumina Infinium HumanMethylation27 BeadChip. Bayesian-adjusted t  ...[more]

Similar Datasets

| S-EPMC3753688 | biostudies-literature
2012-06-13 | E-GEOD-38646 | biostudies-arrayexpress
2012-06-14 | GSE38646 | GEO
| S-EPMC6400463 | biostudies-literature
| S-EPMC3514664 | biostudies-literature
| S-EPMC6561812 | biostudies-literature
| S-EPMC2516518 | biostudies-other
| S-EPMC3135506 | biostudies-literature
| S-EPMC6047358 | biostudies-literature
| S-EPMC5960087 | biostudies-other