Abstract
Arabinoxylan (AX) extracted from wheat bran has attracted much attention due to its immunomodulatory activity. However, the molecular mechanisms underlying this activity remain unclear. In this study, we conducted a comprehensive transcriptional study to investigate genetic changes related to AX and identified 2325 differentially expressed genes (DEGs). Gene Ontology classification revealed that the DEGs were mainly enriched in a series of immune-related processes. Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed that immune-related pathways were significantly enriched in top 20 pathways, including the nuclear factor-kappa B (NF-κB) signaling pathway and the TNF signaling pathway. Validation using quantitative polymerase chain reaction analysis revealed dynamic changes in the mRNA levels of immune-related Cd40, Csf1, Csf2, Fas, IL-1β, IL-6, IL-5, Irf1, and Tnfaip3, which were significantly up-regulated in the AX-treated group. Moreover, AX treatment led to the up-regulation of the nuclear translocation of NF-κB and its upstream target proteins such as PDK1, Akt, IκB-α, and GSK-3β. The dataset compiled from this study provides valuable information for further research on the complex molecular mechanisms associated with AX and the identification of target genes.
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