Plant immune responses to pathogen attack involve various defense mechanisms and among them, the Hypersensitive Response (HR), a form of programmed cell death occurring at invasion sites. AtMYB30, a transcription factor acts as a positive regulator of a cell death pathway conditioning the HR.
A MYB transcription factor regulates very-long-chain fatty acid biosynthesis for activation of the hypersensitive cell death response in Arabidopsis.
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View SamplesGene Expression Profiling of Murine Mammary Stem Cells and Differentiated Derivatives.
Purification and unique properties of mammary epithelial stem cells.
Sex
View SamplesPurpose: The aim of this study is to determine the absolute and relative expression levels of mRNA transcripts across multiple flow cytometrically sorted epithelial cell types including freshly isolated CD24+CD29hi mammary stem cell-enriched basal cells (MaSC/basal), CD24+CD29loCD61+ luminal progenitor-enriched (LP) and the CD24+CD29loCD61- mature luminal-enriched (ML) cell populations. Additionally, a comparison between these primary cell types and cultured MaSC/Basal-derived mammosphere cells (mammosphere) and the CommaD-ßGeo (CommaDß) cell line was performed. Methods: Total RNA was extracted and purified from sorted luminal or basal populations from the mammary glands of female virgin 8- to 10-week-old FVB/N mice (3 independent samples per population), MaSC/Basal cells cultured for 1 week under mammosphere conditions and CommaDß cells grown under maintenance conditions (Deugnier et al. 2006). Total RNA (100 ng) was used to generate sequencing libraries for whole transcriptome analysis following Illumina’s TruSeq RNA v2 sample preparation protocol. Completed libraries were sequenced on HiSeq 2000 with TruSeq SBS Kit v3- HS reagents (Illumina) as 100 bp single-end reads at the Australian Genome Research Facility (AGRF), Melbourne. Approximately 30 million 100 bp single-end reads were obtained for each sample. Reads were aligned to the mouse reference genome mm10 and mapped to known genomic features at the gene level using the Rsubread package (version 1.14.1) (Liao et al. 2013). Single reads were then summarized into gene-level counts using FeatureCounts (Liao et al. 2014). Overall design: Total RNA was extracted and purified from sorted luminal or basal populations from the mammary glands of female virgin 8- to 10-week-old FVB/N mice (3 independent samples for population), MaSC/Basal cells cultured for 1 week under mammsophere conditions and CommaDß cells grown under maintenance conditions (Deugnier et al. 2006) and their transcriptomes analysed by RNA-Seq.
A pooled shRNA screen for regulators of primary mammary stem and progenitor cells identifies roles for Asap1 and Prox1.
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View SamplesMammary glands were collected from 8 pubescent (4.7-4.9 week-old) female mice and 8 adult (10 week old) female mice. Freshly sorted epithelial cells were submitted to a Fluidigm C1 System machine for single cell capture and cDNA synthesis. Cells were visualized under the microscope to ensure integrity of the captured single cells prior to cDNA preparation. Libraries were prepared using the Nextera XT kit and sequencing was carried out on an Illumina NextSeq 500 to achieve paired-end 75 bp reads. Overall design: RNA-seq profiling was completed for 221 cells from pubescent mice and 223 cells from adult mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesMammary glands were collected from pre-pubescent (2 weeks old), pubescent (4.7- 4.9 weeks old) and adult (10 week-old) female mice. Freshly sorted epithelial cells were submitted to a Fluidigm C1 System machine for single cell capture and cDNA synthesis. Cells were visualized under a microscope to ensure integrity of the captured single cells prior to cDNA preparation. Libraries were prepared using the Nextera XT kit and sequencing was carried out on an Illumina Hiseq 2000 to achieve 100 bp paired-end reads. Overall design: RNA-seq profiling was completed for 144 cells from 8 pre-puberty (2 week old) mice, 136 cells from 8 pubescent (4.7-4.9 week old) mice and 66 cells from 8 adult (10 week old) mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesMammary glands were collected from 8 pregnant (12.5 day) mice and 8 adult (10 week old) female mice. Basal epithelial cells were FACS sorted. Freshly sorted cells were submitted to a Fluidigm C1 System machine for single cell capture and cDNA synthesis. Cells were visualized under the microscope to ensure integrity of the captured single cells prior to cDNA preparation. Libraries were prepared using the Nextera XT kit and sequencing was carried out on an Illumina NextSeq 500 to achieve paired-end 75 bp reads. Overall design: RNA-seq profiling was completed for 75 cells from pregnant mice and 237 cells from adult mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesMammary glands were collected from 8 pregnant (12.5 day) mice and 8 non-pregnant adult (10 week old) female mice. Epithelial cells were FACS sorted from the pregnant mice. Cells from the adult mice were FACS sorted as basal or luminal. Freshly sorted cells were submitted to a Fluidigm C1 System machine for single cell capture and cDNA synthesis. Cells were visualized under the microscope to ensure integrity of the captured single cells prior to cDNA preparation. Libraries were prepared using the Nextera XT kit and sequencing was carried out on an Illumina NextSeq 500 to achieve 75 bp paired-end reads. Overall design: 112 basal cells and 43 luminal cells were profiled from the adult mice. 123 total epithelial cells were profiled from the pregnant mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesMammary glands of 8 adult (10 week-old) female mice were collected. Freshly sorted basal and luminal epithelial cells were submitted to a Fluidigm C1 System machine for single cell capture and cDNA synthesis. Cells were visualized under the microscope to ensure integrity of the captured single cells prior to cDNA preparation. Libraries were prepared using the Nextera XT kit and sequencing was carried out on an Illumina Hiseq 2000 to achieve 100bp paired-end reads. Overall design: 96 basal and 90 luminal cells were profiled from 8 mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesEpithelial cells were isolated by FACS from the mammary glands of adult (10 week old) female mice. A basal subpopulation of the epithelial cells was also isolated. Freshly sorted cells were submitted to a 10X Genomics Chromium System for single cell capture. cDNA synthesis and library preparation was done according to the protocol supplied by the manufacturer. Sequencing was carried out on an Illumina NextSeq500 sequencer to achieve 75 bp paired-end reads. Overall design: Transcriptional profiling was completed for 4771 basal cells and 3302 total epithelial cells from 8 mice.
Construction of developmental lineage relationships in the mouse mammary gland by single-cell RNA profiling.
Cell line, Subject
View SamplesLong-lived quiescent mammary stem cells (MaSCs) are presumed to coordinate the dramatic expansion of ductal epithelium that occurs through the different phases of postnatal development, but little is known about the molecular regulators that underpin the activation of MaSCs. Here we show that ablation of the transcription factor Foxp1 in the mammary gland profoundly impairs ductal morphogenesis, resulting in a rudimentary tree throughout adult life. Foxp1-deficient glands were highly enriched for quiescent Tspan8hi MaSCs, which failed to become activated, even in competitive transplantation assays, and therefore harbor a cell-intrinsic defect. Luminal cells aberrantly expressed basal genes, suggesting that Foxp1 may also contribute to cell-fate decisions. Notably, Foxp1 was uncovered as a direct repressor of the Tspan8 gene in basal cells and deletion of Tspan8 could rescue the profound defects in ductal morphogenesis elicited by Foxp1 loss. Thus, a single transcriptional regulator, Foxp1, can control the exit of MaSCs from dormancy to orchestrate differentiation and development. Overall design: Basal and luminal epithelial cells were extracted from the mammary glands of floxed Foxp1 control and Foxp1 mammary gland conditional knockout mice. mRNA from three biological replicates of each cell population was profiled by RNA sequencing. All mice were female.
Foxp1 Is Indispensable for Ductal Morphogenesis and Controls the Exit of Mammary Stem Cells from Quiescence.
Specimen part, Cell line, Subject
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