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Mus musculus

ABSTRACT: Expression profiles of engrafted neural precursor cells in injured spinal cord

PROVIDER: PRJDB2410 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR002195.fastq.gz	Fastqsanger.gz
	DRR002196.fastq.gz	Fastqsanger.gz
	DRR002197.fastq.gz	Fastqsanger.gz
	DRR002198.fastq.gz	Fastqsanger.gz

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Tenascin-C modifies expression levels and territories of key patterning genes during spinal cord astrocyte specification [mus musculus]

Project description:We demonstrate for the first time that the extracellular matrix glycoprotein Tenascin-C regulates the expression of key patterning genes during late embryonic spinal cord development, leading to a timely maturation of gliogenic neural precursor cells. We first show that Tenascin-C is expressed by gliogenic neural precursor cells during late embryonic development. The loss of Tenascin-C leads to a sustained generation and delayed migration of Fibroblast growth factor receptor 3 expressing immature astrocytes in vivo. Furthermore, we could demonstrate an upregulation of Nk2 transcription factor related locus 2 (Nkx2.2) and its downstream target Sulfatase 1 in vivo. A dorsal expansion of Nkx2.2-positive cells within the ventral spinal cord indicates a potential progenitor cell domain shift. Moreover, Sulfatase 1 is known to regulate growth factor signalling by cleaving sulphate residues from heparan sulphate proteoglycans. Consistent with this possibility we observed changes in both Fibroblast growth factor 2 and Epidermal growth factor responsiveness of spinal cord neural precursor cells. Taken together our data clearly show that Tenascin-C promotes the astroglial lineage progression during spinal cord development. in total 6 probes: 3 replica of TNC_wt and 3 replica of TNC_ko

2011-10-19 | E-GEOD-33091 | biostudies-arrayexpress

Tenascin-C modifies expression levels and territories of key patterning genes during spinal cord astrocyte specification [mus musculus]

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Expression data from rat spinal cord injury and mesenchymal stromal cells (MSC) or olfactory ensheathing cells (OEC) transplantation

Project description:We analyzed the changes in the spinal cord transcriptome after a spinal cord contusion injury and MSC or OEC transplantation. The cells were injected immediately or 7 days after the injury. The mRNA of the spinal cord injured segment was extracted and analyzed by microarray at 2 and 7 days after cell grafting. 52 total samples were analyzed in 13 different groups. Each group include 4 samples and each one were analyzed as a biological replica. The intact animals were used as control of injury. The vehicle (VHC) groups were used as control of transplantation procedure. The MSC or OEC graft were injected at the day of injury (acute graft) or seven days after injury (delayed graft). The samples from engrafted animals were obtained at 2 or 7 days after cell transplantation. To determine the effects of MSC or OEC transplantation, the expression value of each engrafted sample were compared with correspondent VHC group.

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Mouse spinal cords transplanted with human iPS cell-derived neural cells with and without chemogenetic stimulations on 14-days and 42-days after spinal cord injury.

Project description:hM3Dq-expressing human iPS cell-derived neural cells were transplanted in the injured mouse spinal cord. Thereafter, transplanted cells were selectively stimulated daily by intraperitoneal injection of CNO. The spinal cord 14-days and 42-days after the injury were eviscerated for analyses.

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