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Genome-wide analysis of mRNA expression differences from various stem cell enriched sub-populations of mouse mammary epithelial cells

ABSTRACT: Microarrays were used to examine gene expression differences in four different sub-populations of mammary epithelial cells obtained through flow cytometry of stem cell markers for H2BGFP, CD24, and CD29. The present study aims to find the specific differences between these populations that influence their ability to repopulate mammary structures in vivo during transplantation assays. H2GFP+/CD24+/CD29lo cells were found to be multipotent and able to give rise to mammary structures capable of lactation, and this ability increased dramatically if the recipient mice were pregnant. Total RNA obtained from sorted sub-populations of mammary epithelial cells.

ORGANISM(S): Mus musculus

SUBMITTER: carl virtanen

PROVIDER: E-GEOD-42055 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide analysis of mRNA expression differences from various stem cell enriched sub-populations of mouse mammary epithelial cells

Project description:Microarrays were used to examine gene expression differences in four different sub-populations of mammary epithelial cells obtained through flow cytometry of stem cell markers for H2BGFP, CD24, and CD29. The present study aims to find the specific differences between these populations that influence their ability to repopulate mammary structures in vivo during transplantation assays. H2GFP+/CD24+/CD29lo cells were found to be multipotent and able to give rise to mammary structures capable of lactation, and this ability increased dramatically if the recipient mice were pregnant.

2013-06-27 | GSE42055 | GEO

The major diversification of VÎ³1.1+ and VÎ³2+ thymocytes in mice occurs after commitment to the Î³Î´ T-cell lineage

Project description:Adult murine gammadelta thymocytes can be divided into two major subsets based on their expression of TCRVgamma1.1 or TCRVgamma2, respectively. gammadelta thymocytes mature through distinct stages characterized by CD24 and CD73 in the following order: immature uncommitted (CD24+CD73-), immature committed (CD24+CD73+) and mature (CD24-CD73+). In this dataset we have sorted gammadelta thymocytes into 6 distinct populations based on subset and developmental stage and analyzed their gene expression. These data were used to identify 3400 differentially expressed genes during gammadelta thymocyte development and to show that the two major adult gammadelta T cells follow a similar path through early development and mainly diversify after commitment to the gammadelta T cell lineage. 22 samples (6 populations 3-4 biological replicates) were analyzed for differential expression to identify genes shared between cells of the different subsets at each developmental stage.

2016-07-28 | E-GEOD-75920 | biostudies-arrayexpress

miRNA expression profiling in human mammary epithelial cell (HMEC) CD24-CD44+ and non-CD24-CD44+ cell populations

2011-02-01 | GSE25036 | GEO

The role of p53 in the regulation of miRNA expression profiling

2011-02-01 | GSE25035 | GEO

p53 regulates epithelial-mesenchymal transition (EMT) and stem cell properties through modulation of miRNAs.

Project description:This SuperSeries is composed of the following subset Series: GSE25035: The role of p53 in the regulation of miRNA expression profiling GSE25036: miRNA expression profiling in human mammary epithelial cell (HMEC) CD24-CD44+ and non-CD24-CD44+ cell populations Refer to individual Series

2011-02-01 | E-GEOD-25037 | biostudies-arrayexpress

miRNA expression profiling in human mammary epithelial cell (HMEC) CD24-CD44+ and non-CD24-CD44+ cell populations

Project description:To understand the role of p53 in regulating stem cell population (CD24-CD44+) and stemness-associated miRNAs, we first compared miRNA expression profiles between human mammary epithelical cells knocked-down p53 and control cells. We then cross-referenced p53-regulated miRNAs with stemness-associated miRNAs analyzed from expression profiling of sorted CD24-CD44+ and non-CD24-CD44+ cell populations. Further biological experiments were performed with the miRNAs that are altered in CD24-CD44+ stem cell populations and also regulated by p53. Total RNAs, including miRNAs, extracted from CD24-CD44+ cells (labeled in Hy3) and non-CD24-CD44+ cells (labeled in Hy5) were hybridized on Exiqon miRCURY LNA arrays according to the manufacturer's protocol.

2011-02-01 | E-GEOD-25036 | biostudies-arrayexpress

Mus musculus

Project description:Sub-populations in the mammary repopulating units

| PRJNA362908 | ENA

Quantification of regenerative potential in primary human mammary epithelial cells

Project description:We present an organoid regeneration assay in which freshly dissociated human mammary epithelial cells from healthy donors are grown in adherent/rigid or floating/compliant collagen I gels. In both conditions, luminal progenitors (CD49f+EpCAM+) form spheres, whereas basal cells (CD49fhiEpCAM-) generate branched ductal structures. However, in compliant but not rigid collagen gels, branching ducts form alveoli at their tips, express basal and luminal markers at correct positions and display contractility, which is required for alveologenesis. Thereby, branched structures generated in compliant collagen gels resemble terminal ductal-lobular units (TDLUs), the functional units of the mammary gland. Moreover, the membrane metallo-endopeptidase CD10 as an additional surface marker enriches for TDLU-formation and reveals the presence of stromal cells within the CD49fhiEpCAM- population. In summary, we describe a defined in vitro assay system to quantify cells with regenerative potential and systematically investigate their interaction with the physical environment at distinct steps of morphogenesis. Comparison of three cell populations derived from FACS-sorted primary human mammary epithelial cells: luminal progenitors, CD10+ basal cells and CD10- basal cells.

2015-07-02 | E-GEOD-64248 | biostudies-arrayexpress

The role of p53 in the regulation of miRNA expression profiling

Project description:To understand the role of p53 in regulating stem cell population (CD24-CD44+) and stemness-associated miRNAs, we first compared miRNA expression profiles between human mammary epithelial cells knocked-down p53 and control cells. We then cross-referenced p53-regulated miRNAs with stemness-associated miRNAs analyzed from expression profiling of sorted CD24-CD44+ and non-CD24-CD44+ cell populations. Further biological experiments were performed with the miRNAs that are altered in CD24-CD44+ stem cell populations and also regulated by p53. Total RNAs, including miRNAs, were extracted from cells infected with retrovirus expressing shp53 (labeled in Hy3) and vector control (labeled in Hy5). miRNAs were hybridized on Exiqon miRCURY LNA arrays according to the manufacturer's protocol.

2011-02-01 | E-GEOD-25035 | biostudies-arrayexpress

Ontogeny of CD24 expression in the human fetal kidney

Project description:CD24, or heat stable antigen, is a cell surface sialoglycoprotein expressed on immature cells that disappears after the cells have reached their final differentiation stage. CD24 may be important in human embryonic kidney epithelial cell differentiation. In mice, CD24 expression is up-regulated in the early metanephros and localized to developing epithelial structures but the role and expression of CD24 in the developing human kidney has not been well described. In normal human fetal kidneys from 8 to 38 weeks gestation, CD24 expression was up-regulated and restricted to the early epithelial aggregates of the metanephric blastema and to the committed proliferating tubular epithelia of the S-shape nephron; however individual CD24+ cells were identified in the interstitium of later gestation and postnatal kidneys. In freshly isolated cells, FACS analysis demonstrated distinct CD24+ and CD24+133+ cell populations, constituting up to 16% and 14% respectively of the total cells analyzed. Isolated and expanded CD24+ clones displayed features of an epithelial progenitor cell line. Early fetal urinary tract obstruction resulted in an upregulation of CD24 expression, both in developing epithelial structures of early gestation kidneys and in the cells of the injured tubular epithelium of the later gestation kidneys. These results highlight the cell specific expression of CD24 in the developing human kidney and dysregulation in fetal urinary tract obstruction. We used microarrays to define the differences in global gene expression between obstructed and normal human fetal kidneys. We analyzed RNA extracted from human fetal kidneys between the gestational ages 8 and 18 weeks gestation. This dataset is part of the TransQST collection.

2009-11-11 | E-GEOD-18969 | biostudies-arrayexpress

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