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Endothelial Pd1 orchestrates cerebrovasculature homeostasis and oligodendrogenesis during brain development

ABSTRACT: Endothelial Pd1 orchestrates cerebrovasculature homeostasis and oligodendrogenesis during brain development

PROVIDER: PRJNA1110160 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28987206_1.fastq.gz	Fastqsanger.gz
	SRR28987206_2.fastq.gz	Fastqsanger.gz
	SRR28987207_1.fastq.gz	Fastqsanger.gz
	SRR28987207_2.fastq.gz	Fastqsanger.gz
	SRR28987208_1.fastq.gz	Fastqsanger.gz

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Endothelial Pd1 orchestrates cerebrovasculature homeostasis and oligodendrogenesis during brain development

Project description:Purpose: To explore further into the mechanisms by which endothelial PD1 controls cerebrovascular development and oligodendrogenesis, we employed RNA-seq to examine genome-wide alterations in endothelial cells from P0 conditional PD1 knockout mice, comparing them with their wild-type littermates. Methods: mRNA was extracted from P0 isolated endothelial cells of Pd1fl/fl and Pd1cKO-Tie2 mice, and the quality and quantity were assessed using the Agilent 2100 Bioanalyzer. Subsequently, the mRNA was converted to cDNA and Libraries were prepared. RNA-sequencing was performed on the Illumina HiSeq 2500 platform at Annoroad Genomics. Results: Approximately one thousand transcripts showed differential expression between the Pd11fl/fl and Pd1cKO-Tie2 mice brain endothelial cell, with a fold change ≥2 and p value <0.05.Geneontology analysis of the downregulated genes were enriched in terms related to positive regulation of angiogenesis, positive regulation of vascular endothelial growth factor production and positive regulation of inflammatory response. Concomitantly, upregulated genes were enriched in terms related to endothelial cell migration, sequestering of BMP from receptor via BMP binding and regulation of establishment of blood-brain barrier. These results reflected endothelial PD1 plays vital roles in cortex development. Conclusions: Endothelial PD1 RNA-seq would provide a overall understanding how endothelium-derived PD1regulates vessel development and oligodendrogenesis during brain development

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Endothelial cells mediated by STING signaling regulate oligodendrogenesis and myelination during brain development

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Project description:Little is known about metabolic changes accompanying endothelial cell (EC) quiescence. Nonetheless, when dysfunctional, quiescent ECs (QECs) contribute to multiple cardiovascular diseases. ECs need fatty acid β-oxidation (FAO) for proliferation. Surprisingly, we now report that QECs are not hypo-metabolic, but upregulate FAO >3-fold higher than proliferating ECs (PECs), not to support biomass or energy production, but to sustain the TCA cycle for redox homeostasis through NADPH production. Hence, inhibition of FAO-controlling CPT1A promotes EC dysfunction (anti-fibrinolysis, leukocyte infiltration, barrier disruption) by increasing oxidative stress in CPT1AΔEC mice with endothelial CPT1A loss. Mechanistically, Notch1 orchestrates the use of FAO for redox balance in QECs. Supplementation of acetate (metabolized to acetyl-CoA) induces vasculoprotection against oxidative stress and EC dysfunction in CPT1AΔEC mice, possibly creating therapeutic opportunities. Thus, ECs use FAO for vasculoprotection against their high oxygen (oxidative stress-prone) milieu, and for different metabolic purposes dependent on their proliferation versus quiescence status.

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miRNA expression between CD4+PD1+ and CD4+PD1- T cells

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