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Bulk transcriptomics of Hopx-CreER and Lgr5-CreER marked intestinal epithelial cells.

ABSTRACT: Bulk transcriptomics of Hopx-CreER and Lgr5-CreER marked intestinal epithelial cells.

PROVIDER: PRJNA847998 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19625300.fastq.gz	Fastqsanger.gz
	SRR19625301.fastq.gz	Fastqsanger.gz
	SRR19625302.fastq.gz	Fastqsanger.gz
	SRR19625303.fastq.gz	Fastqsanger.gz
	SRR19625304.fastq.gz	Fastqsanger.gz

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Bulk transcriptomics of Hopx-CreER and Lgr5-CreER marked intestinal epithelial cells.

Project description:The intestinal epithelium exhibits a rapid and efficient regenerative response to injury. Emerging evidence supports a model where plasticity of differentiating(ed) cells, particularly those in the secretory lineages, contributes to epithelial regeneration upon ablation of injury-sensitive stem cells. However, such facultative stem cell activity is rare within secretory populations. Here we ask whether specific functional properties predict facultative stem cell activity. We utilize in vivo labeling combined with ex vivo organoid formation assays to evaluate how cell age and autophagic state contribute to facultative stem cell activity within secretory lineages. Strikingly, we find that cell age (time elapsed since cell cycle exit) does not correlate with secretory cell plasticity. Instead, high autophagic activity predicts plasticity and resistance to DNA damaging injury independently of cell lineage. Our findings indicate that autophagic status prior to injury serves as a lineage-agnostic proxy for the prospective identification of facultative stem cells.

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Persistence of effector memory Th1 cells is regulated by the homeobox only protein Group1 Hopx-/-, Group2 Hopx+/-, Group3 Hopx+/+

Project description:Hopx appears to be needed for persistence of Th1 effector memory cells. IFN-gamma-producing Th cells are significantly reduced in Hopx-deficient mice compared to Hopx-expressing littermates and Hopx-deficient Th1 cells show a defective persistence upon adoptive transfer. Moreover, Hopx protects Th1 cells from Fas-mediated cell death in vitro. To further dissect the role of Hopx and to identify target genes of Hopx, we have performed transcriptome analysis to compare gene expression in Hopx-deficient versus Hopx-competent Th1 cells. In agreement with the role of Hopx in supporting survival of Th1 effector memory cells, anti-apoptotic cells were up-regulated and pro-apoptotic genes were down-regulated in Hopx-competent compared to Hopx-deficient Th1 cells.

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Project description:We generated Hopx conditional knockout mouse (Hopx-/-) and studied the biological effects of Hopx knockout on the hematopoietic system, via whole-transcriptome RNA-seq. The findigns of our studies support crucial roles of Hopx in physiological and malignant hematopoiesis.

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Next generation sequencing for quantitative transcriptomic analysis of subpopulations of BM cells from young Hopx-wildtype and Hopx-knockout mice.

Project description:Hopx conditional knockout mouse (Hopx-/-) was generated. We then studied the biological effects of Hopx knockout on the hematopoietic system of young mice, via whole-transcriptome RNA-seq.

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Project description:Progenitor cells require coordinated expression of lineage-specific genes to regulate differentiation into daughter cell types. Hopx labels cardiac progenitors that are commited to the cardiac myocyte lineage. Hopx-deficiency leads to thin myocardium in approximately mid-gestation lethality in approximately 50% of embryos (secondary to thin myocardium and presumed cardiac rupture). Hopx-/- EBs display impaired myogenesis during cardiac differentiation. ChIP-seq and RNA expression analysis suggests that Hopx down regulates Wnt signaling by directly occupying and repressing wnt ligand genes. Analysis of embryoid bodies on day 8 of cardiac differentiation. RNA was made of from 1. Hopx +/- embryoid bodies, 2. Hopx -/- embryoid bodies, Embryonic stem cell lines were derived from littermate mouse blastocysts. Results provide insight into gene programs regulated by Hopx in cardiac development.

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