Project description:This SuperSeries is composed of the following subset Series: GSE20401: Mammary epithelial cell subpopulations from control and ovariectomized mice GSE20402: Mouse mammary epithelial cell subpopulations from pregnant and virgin mice Refer to individual Series
Project description:To study the effect of pregnancy on mouse mammary epithelial subpopulations, epthelial cells derived from virgin or pregnant (12.5 day pregnant) mice were isolated using fluorescence-activated cell sorting. After elimination of haematopoietic and endothelial cells, two distinct epithelial subpopulations were sorted using antibodies against CD29 and CD24. Based on the immunohistochemical phenotype, and in vivo and in vitro functional assays, these subpopulations were identified as mammary stem cell enriched (CD29hiCD24+) and luminal (CD29loCD24+) respectively (ref: Shackleton et al, Nature 2006). Microarray profiling was used to compare gene expression profiles of the two subpopulations in 12.5 day pregnant and virgin mice. For each biological replicate, mammary gland from virgin or 12.5 day pregnant FVB/NJ mice were collected and digested to obtain a single cell suspension. CD45-CD31-TER119- cells were then sorted based on the expression of cell surface markers CD24 and CD29. There were 4 pools of pregant mice and 3 pools of virgin mice.
Project description:To study the effect of pregnancy on mouse mammary epithelial subpopulations, epthelial cells derived from virgin or pregnant (12.5 day pregnant) mice were isolated using fluorescence-activated cell sorting. After elimination of haematopoietic and endothelial cells, two distinct epithelial subpopulations were sorted using antibodies against CD29 and CD24. Based on the immunohistochemical phenotype, and in vivo and in vitro functional assays, these subpopulations were identified as mammary stem cell enriched (CD29hiCD24+) and luminal (CD29loCD24+) respectively (ref: Shackleton et al, Nature 2006). Microarray profiling was used to compare gene expression profiles of the two subpopulations in 12.5 day pregnant and virgin mice.
Project description:This study examined the effect of early pregnancy on the gene expression profiles of stromal and various epithelial mammary cell subpopulations in mice. Mammary cell subpopulations were isolated from parous and age-matched virgin control mice. Three independent replicates were assessed per cell subpopulation and treatment group, resulting in a total of 35 samples.
Project description:MaSC, Luminal progenitor enriched subpopulations were sorted based on CD24/CD29 expression from mammary epithelial cells of virgin female mice . (Tiede BJ et al., 2009, PLoS ONE 4(11): e8035. doi:10.1371/journal.pone.0008035), and the transcirptome profiles were determined and compared.
Project description:In this study we mapped H3K27me3, H3K4me3 and H3K9me2 marks in three mammary epithelial subsets: MaSC/basal (MS), luminal progenitor (LP) and mature luminal (ML) in the steady-state. In addition, profiles were generated for H3K4me3 and H3K27me3 marks in the MaSC/basal and luminal populations from the glands of ovariectomized or mid-pregnant (12.5 days) mice as well as from control virgin mice. We used ChIPseq analysis to determine histone modification marks in the MS, LP and ML subsets in the steady-state. We then determined the histone modification profiles of MS and sorted luminal (Lum) cells from pregnant (12.5 dP) or ovariectomized (OVX) mice and compared these with the profiles of control virgin mice in order to study the effect of hormones on the mammary epigenomes.
Project description:MaSC and luminal enriched subpopulations were sorted based on CD24/CD29 expression from mammary epithelial cells of virgin female mice . (Tiede BJ et al., 2009, PLoS ONE 4(11): e8035. doi:10.1371/journal.pone.0008035), and the microRNA profiles were determined using microRNA array and compared.
Project description:This study was performed to identify transcripts that are differentially expressed in the mammary gland at 4 stages of developmental (virgin, pregnant, lactating and involution) in wild type C57BL/6J mice. Experiment Overall Design: Whole mammary glands No4 (inguinal) were obtained from female mice at 4 stages of development: Virgin (puberty, 6 wks of age), Pregnant (14 days of pregnancy), Lactating (day 10 postpartum) and Involution (4 days post weaning of pups). Three biological replicates were obtained from Virgin females and two biological replicates for the three other stages. mice
