Project description:In this dataset, we include the expression data obtained from rat Schwann cells overepressing GFP (control) or Sox2/GFP to identfiy Sox2 tragets in Schwann cells. An in vitro microarray analysis of GFP (control) and Sox2/GFP overexpressing Schwann cells
Project description:The extracellular matrix is essential for tissue formation and regeneration through the control of cellular behavior. Deregulation of extracellular matrix components is associated to disease, including neurodegeneration. After peripheral nerve injury, Schwann cells guide regrowing axons to their targets. These glial cells migrate collectively and provide an extracellular environment to enable neural repair. How this occurs remains poorly understood. Here, we show that Sox2 controls fibronectin fibrillogenesis in Schwann cells to provide a highly oriented extracellular matrix, which supports their rapid collective migration with a continuous cellular flow. Sox2 directly activates fibronectin expression in Schwann cells, leading to an increase in fibrillogenesis and cellular huddling. Accordingly, loss of fibrillogenesis leads to glial disassembly and disorganized axon regrowth. In vivo, 7 days post nerve injury, we found that pro-regenerative Schwann cells co-express Sox2 and the EIIIA-containing fibronectin splicing isoform. This mechanism is conserved in mammals, including humans, but absent in zebrafish. Taken together, our results demonstrate that Sox2 directly controls fibrillogenesis and provide a novel mechanism for the modification of the environmental architecture by glial cells during neuronal repair.
Project description:We utilized RNA-Seq on rat Schwann (S16) cells to determine global gene expression. This information was generated as part of a larger effort to characterize cis-regulatory elements and global gene expression within Schwann cells. To achieve this, we generated RPKM values across two independent biological replicates. This dataset was also used to predict cis-regulatory element function on genes following CRISPR knockout studies.
Project description:In order to understand the molecular mechanisms of changes seen in the adult mouse intestine in response to Sox2 overexpression, gene expression was analyzed in the ileum upon 2-day Doxycycline (DOX) treatment of mice containing Dox-inducible Sox2 transgene. Repression of Cdx2 and of its intestinal targets was observed and confirmed by Western blotting and immunostaining. This effect of Sox2 was distinct from the effect of overexpression of Oct4. 6-8 week old TetON-Sox2, rtTA controls (no TetOP-Sox2 transgene), TetON-Oct4, and TetON-Sox2 X TetON-Oct4 mice (2 replicates) were treated for 2 days with 2 mg/ml DOX or were left untreated. Intestines (ileum part) were collected and total mRNA was extracted.
Project description:In order to understand the molecular mechanisms of changes seen in the adult mouse intestine in response to Sox2 overexpression, gene expression was analyzed in the ileum upon 2-day Doxycycline (DOX) treatment of mice containing Dox-inducible Sox2 transgene. Repression of Cdx2 and of its intestinal targets was observed and confirmed by Western blotting and immunostaining. This effect of Sox2 was distinct from the effect of overexpression of Oct4.
Project description:Transcriptional profiling of adult forestomach epithelium comparing K5-CreER controsl with K5-CreER;Rosa26Sox2/Sox2 mutants. Two doses of tamoxifen were given and four weeks later the epithelal sheets were harvested for RNA extraction. Goal was to determine the effects of Sox2 overexpression on epithelial phenotypic changes. Two-condition experiment, wildtype Vs Sox2 overexpression mutant. Biological replicates: 3 control replicates, 3 mutant replicates.
Project description:Pou5f1 and Sox2 overexpression experiments with protein synthesis inhibitor were performed to investigate direct transcriptional targets of Pou5f1 and Sox2
Project description:We have identified SOX2 as a new oncogene and a likely driver of recurrent 3q26.3 amplifications in lung Squamous Cell Carcinoma. SOX2 is a crucial transcription factor implicated in Embryonic and Neural Stem Cells, that we found widely activatd in human lung SCC. This part of the study aimed at analyzing the transcriptomic consequences of SOX2 overexpression in a simple in vitro model (human lung squamous immortalized cells). Human lung squamous BEAS-2B cells were transduced for Control or SOX2 expression, and their transcriptomes compared using Affymetrix arrays.
Project description:The aim of this study was to identify differently expressed genes between C3 or C3156-181-peptide treated Isolated primary rat neonatal Schwann Cells. To elucidate the unresolved mechanism behind the promoting effect of C3156-181 on PNR we cultured primary rat neonatal SCs and treated them for up to 72 h with C3 or C3156-181. We then performed gene expression microarray analysis Results from two loops of two different treatment times are summarized in this study. The samples were taken from two C3 or C3156-181-peptide treated Isolated primary rat neonatal Schwann Cell cultures. Microarrays were hybridized in a loop approach. Results from two loops that map to two different sampling times (loop1: after 12 hours, loop2: after 72) are compared in this study. The data in this file represents loop1. The samples were taken from untreated, C3 or C3156-181-peptide treated Isolated primary rat neonatal Schwann Cells.