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Identify gene expression signatures in the niche cells (CD45 negative) during proliferation of Hematopoietic stem cells (LSK)

ABSTRACT: To further identify gene expression signatures in the niche cells (CD45 negative) during proliferation of Hematopoietic stem cells (LSK), we employed mice whole genome (60K) microarray expression profiling as a discovery platform to identify the up-regulated and down-regulated genes of the niche.

ORGANISM(S): Mus musculus

PROVIDER: GSE75294 | GEO | 2016/01/01

SECONDARY ACCESSION(S): PRJNA303142

REPOSITORIES: GEO

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Identify gene expression signatures in the niche cells (CD45 negative) during proliferation of Hematopoietic stem cells (LSK)

Project description:To further identify gene expression signatures in the niche cells (CD45 negative) during proliferation of Hematopoietic stem cells (LSK), we employed mice whole genome (60K) microarray expression profiling as a discovery platform to identify the up-regulated and down-regulated genes of the niche. [Samples A-D] In this experiment a physiological stress model was created where the recipient mice were subjected to sub lethal radiation (700 CGy) following a transplantation of 30,000 LSK cells (HSCs). Bone marrow cells were isolated on day 0 (before transplantation) and day 10 (post transplantation of 30,000 LSK cells when maximum proliferation of HSCs was observed). Donor HSCs was sorted by FACS following RNA isolation and cDNA synthesis followed by single color global gene expression analysis. Agilent one-color experiment,Organism:Mouse, Agilent Whole Genome Mouse 8x60k (AMADID: 26986) , Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442)

2016-07-03 | E-GEOD-75294 | biostudies-arrayexpress

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Project description:We found PAD4, which is one of the transcriptional co-regulator by histone modification, was highly expressed in lineage-, Sca-1+, c-kit+ (termed as LSK) cells of mouse bone marrow. To find the target genes which are regulated by PAD4 in LSK cells, we analyzed gene expression in PAD4-deficient mouse as compared with wild-type mouse.

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Single-cell transcriptomic profiles of CD45-negative cells from Mx1Cre-Rbpjf/f mice

Project description:Induced abltion of Adam10 in Mx1-Cre x Adam10f/f mice results in T cell-independent Inflammatory alopecia. To determine if the Notch signaling pathway was downstream of Adam10, Mx1-Cre x Rbpjf/f mice were generated. After poly(I:C) injection, mouse skin was dissociated and were sorted for CD45-negative cells which were subjected to single-cell RNA sequencing analysis.We found that the ADAM10-Notch signaling axis in type I/III interferon-responsive upper hair follicles (HF) was crucial for the expression of genes that regulated skin microbiota and protected HFs and its stem cell niche from inflammatory destruction.

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Project description:Side population (SP) cells are highly enriched in stem and progenitor cells. CD45+and CD45- SP cells were found at all developmental lung stages with the highest frequency of cells present at embryonic day 17.5 (E17.5), In order to clarify the role of these cells in lung development, we used oligonucleotide microarrays to evaluate their gene expression profiles. To do this, oligonucleotide gene arrays were performed in triplicate on RNA derived from CD45+ and CD45-SP cells, and CD45+ and CD45- non-SP populations (main population; MP) isolated from the E17.5 lung.

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