Deoxynivalenol
(DON) is a type of mycotoxin that is disruptive
to intestinal and immune systems. To better understand the molecular
effects of DON exposure, we performed genome-wide comparisons of DNA
methylation and gene expression from porcine intestinal epithelial
cell IPEC-J2 upon DON exposure using reduced representation bisulfite
sequencing and RNA-seq technologies. We characterized the methylation
pattern changes and found 3030 differentially methylated regions.
Moreover, 3226 genes showing differential expression were enriched
in pathways of protein and nucleic acid synthesis and ribosome biogenesis.
Integrative analysis identified 29 genes showing inverse correlations
between promoter methylation and expression. Altered DNA methylation
and expression of various genes suggested their roles and potential
functional interactions upon DON exposure. Our data provided new insights
into epigenetic and transcriptomic alterations of intestinal epithelial
cells upon DON exposure and may advance the identification of biomarkers
and drug targets for predicting and controlling the toxic effects
of this common mycotoxin.
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