Abstract
Extensive epigenetic remodeling occurs during the cell fate determination of stem cells. Previously, we discovered that eudesmin regulates lineage commitment of mesenchymal stem cells through the inhibition of signaling molecules. However, the epigenetic modulations upon eudesmin treatment in genomewide level have not been analyzed. Here, we present a transcriptome profiling data showing the enrichment in PRC2 target genes by eudesmin treatment. Furthermore, gene ontology analysis showed that PRC2 target genes downregulated by eudesmin are closely related to Wnt signaling and pluripotency. We selected DKK1 as an eudesmin-dependent potential top hub gene in the Wnt signaling and pluripotency. Through the ChIP-qPCR and RT-qPCR, we found that eudesmin treatment increased the occupancy of PRC2 components, EZH2 and SUZ12, and H3K27me3 level on the promoter region of DKK1, downregulating its transcription level. According to the analysis of GEO profiles, DEGs by depletion of Oct4 showed an opposite pattern to DEGs by eudesmin treatment. Indeed, the expression of pluripotency markers, Oct4, Sox2, and Nanog, was upregulated upon eudesmin treatment. This finding demonstrates that pharmacological modulation of PRC2 dynamics by eudesmin might control Wnt signaling and maintain pluripotency of stem cells.
Highlights
The maintenance or differentiation of embryonic stem cells (ESCs) or adult stem cells requires exquisite control of gene expression patterns
To investigate genomewide genomewideeffects effects of eudesmin, we evaluated differentially exTo investigate of eudesmin, we evaluated differentially expressed pressed genes (DEGs) in 10T1/2 mesenchymal stemtreated cells treated with eudesmin through genes (DEGs) in 10T1/2 mesenchymal stem cells with eudesmin through
Based on the abundance of polycomb repressive complex2 (PRC2) target genes among DEGs by eudesmin, we investigated the functional ontology by entering the list of Cluster 2 genes to Enrichr
Summary
The maintenance or differentiation of embryonic stem cells (ESCs) or adult stem cells requires exquisite control of gene expression patterns. Polycomb group (PcG) proteins play a critical role during early development by operating the transcriptional modulation of specialized gene sets [1]. Among the two main PcGs, polycomb repressive complex. ESCs deficient in PRC2 core components, including. EZH2, SUZ12, or EED, fail to differentiate properly in vitro [3,4]. Depletion of PRC2 components in mouse induced embryonic lethal disrupting early development [5,6]. How PRC2 mediates fine-tuning of multilineage differentiation has not been completely understood. Pharmacological modulation of PRC2 would provide a useful tool to expand our perspective on its function in developmental processes of mammalian ESCs
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