Project description:Characterization of the tumor border microenvironment is critical for improving prognosis in patients with GBM. Here, we compared microRNA (miRNA) expression in samples from the tumor, tumor border, and peripheral region far from tumor mass by miRNA microarray. The top three of miRNAs showing higher expression in the tumor border were related to oligodendrocyte differentiation, and pathologically oligodendrocyte lineage cells were increased in the border, where numbers of macrophages and microglia also colocalized. Medium cultured with oligodendrocyte progenitor cells (OPCs) and macrophages induced stemness and chemo-radioresistance in GBM cells. Thus, OPCs and macrophages/microglia may form a glioma stem cell niche at the tumor border, representing a novel promising target for prevention of recurrence.
Project description:Here we investigate a functional role for SoxB1 transcription factors, Sox2 and Sox3, on the transient embryonic cell population, the neural plate border. We find through gain/loss-of-function studies necessary for neural plate border cells to become neural crest cells. and genomics experiments (ChIP-seq and RNA-seq) that SoxB1 transcription factors directly promote neural plate border formation. and that down-regulation of SoxB1 expression is
