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SRP135818
Mus musculus
6 Downloadable Samples
Illumina HiSeq 2500
Description
Protoplasmic astrocytes in layers II to VI of the mammalian neocortex have historically been thought to comprise a homogeneous population. Given that layer-specific neuronal subtypes play essential roles in cortical circuitry, astrocytes might also be expected to support and modify this circuitry in a layer-specific manner. In order to investigate whether protoplasmic astrocytes exhibit layer-specific heterogeneity, we compared the gene expression profiles of astrocytes between upper layers (layers II to IV) and deep layers (layers V and VI). Although most genes known to be preferentially expressed in astrocytes (astrocyte-enriched genes) were equally expressed between upper-layer astrocytes and deep-layer astrocytes, some such genes (astrocyte-enriched genes or genes with known function in astrocytes) were significantly enriched in upper-layer astrocytes or deep-layer astrocytes. Overall design: With the use of fluorescence-activated cell sorting (FACS), we prepared upper-layer astrocytes and deep-layer astrocytes from the corresponding dissected layers of the somatosensory cortex of Aldh1l1-eGFP mice, in which all astrocytes are expected to be labeled with GFP. The meninges, layer I, and the corpus callosum were removed from upper- and deep-layer tissue samples. In addition, parts of layers IV and V were lost during separation of these layers in such a way as to prevent cross-contamination between the upper- and deep-layer samples. Total RNA from upper-layer astrocytes and deep-layer astrocytes (n = 3 brains from 4-week-old male mice) was isolated from sorted cells with TRIzol (Invitrogen) or RNAiso Plus (Takara) and was then subjected to reverse transcription with the use of a SMART-Seq v4 Ultra Low Input RNA Kit for Sequencing (Clontech). Bar-coded libraries were prepared with a Nextera XT DNA Library Preparation Kit (Illumina), and single-end 36-bp sequencing was performed with a HiSeq 2500 instrument (Illumina).
Publication Title
Layer-specific morphological and molecular differences in neocortical astrocytes and their dependence on neuronal layers.
Sample Metadata Fields
Specimen part, Subject
View Samples- Caenorhabditis elegans
- 10 Downloadable Samples
- NextSeq 500
Description
We profiled how animals RNA expression changes in response to osmotic stress, how lin-45 mutants have an altered response to osmotic stress, and how maternal preconditioning at 300 mM NaCl modifies progeny response to 500 mM NaCl Overall design: Examination of total RNAseq at 50 mM NaCl, 500 mM NaCl, and 500 mM NaCl from maternally preconditioned animals
Publication Title
Insulin-like signalling to the maternal germline controls progeny response to osmotic stress.
Sample Metadata Fields
Subject, Time
View Samples- Arabidopsis thaliana
- 19 Downloadable Samples
Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Analysis of calli derived from the wild type (Ler), the ckh1 and ckh2 mutants cultured on media in the absence of cytokinin (control), in the presence of low (25 ng/ml kinetin) or high (200 ng/ml kinetin) levels of cytokinin, or in the presence of Trichostatin A (TSA). In these conditions, a constant 2,4-dichlorophenoxyacetic acid (2,4-D) was included as an auxin.
Publication Title
The CKH2/PKL chromatin remodeling factor negatively regulates cytokinin responses in Arabidopsis calli.
Sample Metadata Fields
Disease, Treatment
View Samples- Homo sapiens
- 8 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Removal of BRCA1/CtIP/ZBRK1 repressor complex on ANG1 promoter leads to accelerated mammary tumor growth contributed by prominent vasculature.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 4 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
BRCA1 exerts transcriptional repression through interaction with CtIP in the C-terminal BRCT domain and ZBRK1 in the central domain. A dozen of genes including angiopoietin-1 (ANG1), a secreted angiogenic factor, are co-repressed by BRCA1 and CtIP based on microarray analysis of mammary epithelial cells in 3-D culture. BRCA1, CtIP and ZBRK1 form a complex that coordinately represses ANG1 expression via a ZBRK1 recognition site in ANG1 promoter. Impairment of this complex upregulates ANG1, which stabilizes endothelial cells forming capillary-like network structure. Consistently, Brca1-deficient mouse mammary tumors exhibit accelerated growth, pronounced vascularization and overexpressed ANG1. These results suggest, besides its role in maintaining genomic stability, BRCA1 directly regulates the expression of angiogenic factors to modulate the tumor microenvironment.
Publication Title
Removal of BRCA1/CtIP/ZBRK1 repressor complex on ANG1 promoter leads to accelerated mammary tumor growth contributed by prominent vasculature.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 4 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
BRCA1 exerts transcriptional repression through interaction with CtIP in the C-terminal BRCT domain and ZBRK1 in the central domain. A dozen of genes including angiopoietin-1 (ANG1), a secreted angiogenic factor, are co-repressed by BRCA1 and CtIP based on microarray analysis of mammary epithelial cells in 3-D culture. BRCA1, CtIP and ZBRK1 form a complex that coordinately represses ANG1 expression via a ZBRK1 recognition site in ANG1 promoter. Impairment of this complex upregulates ANG1, which stabilizes endothelial cells forming capillary-like network structure. Consistently, Brca1-deficient mouse mammary tumors exhibit accelerated growth, pronounced vascularization and overexpressed ANG1. These results suggest, besides its role in maintaining genomic stability, BRCA1 directly regulates the expression of angiogenic factors to modulate the tumor microenvironment.
Publication Title
Removal of BRCA1/CtIP/ZBRK1 repressor complex on ANG1 promoter leads to accelerated mammary tumor growth contributed by prominent vasculature.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 6 Downloadable Samples
- Illumina Genome Analyzer IIx
Description
To explore functionally crucial tumor-suppressive (TS)-miRNAs in hepatocellular carcinoma (HCC), we performed integrative function- and expression-based screenings of TS-miRNAs in six HCC cell lines. The screenings identified seven miRNAs, which showed growth-suppressive activities through the overexpression of each miRNA and were endogenously downregulated in HCC cell lines. Further expression analyses using a large panel of HCC cell lines and primary tumors demonstrated four miRNAs, miR-101, -195, -378 and -497, as candidate TS-miRNAs frequently silenced in HCCs. Among them, two clustered miRNAs miR-195 and miR-497 showed significant growth-suppressive activity with induction of G1 arrest. Comprehensive exploration of their targets using Argonute2-immunoprecipitation-deep-sequencing (Ago2-IP-seq) and genome-wide expression profiling after their overexpression, successfully identified a set of cell-cycle regulators, including CCNE1, CDC25A, CCND3, CDK4, and BTRC. Our results suggest the molecular pathway regulating cell cycle progression to be integrally altered by downregulation of miR-195 and miR-497 expression, leading to aberrant cell proliferation in hepatocarcinogenesis. Identification of miR-195 and miR-497 target genes by sequencing Ago2-binding mRNAs and total mRNAs of miR-195 or miR-497 overexpressed, or non-treated Hep G2 cell. Overall design: Deep sequencing of RNAs in Ago2-IP fraction and mRNAs extracted from miR-195 or miR-497 overexpressed, or non-treated Hep G2 cell.
Publication Title
The tumor-suppressive miR-497-195 cluster targets multiple cell-cycle regulators in hepatocellular carcinoma.
Sample Metadata Fields
Cell line, Treatment, Subject, Time
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Mice that are mutant for both Fgfr1 and Fgfr2 specifically in the developing retina develop coloboma. To analyze the transcripts that are affected by defective FGF signaling, we micro-dissected the optic fissure region from the control and FGFR condtional mutant mice and did microarray analysis.
Publication Title
Defective FGF signaling causes coloboma formation and disrupts retinal neurogenesis.
Sample Metadata Fields
Specimen part
View Samples- Arabidopsis thaliana
- 6 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
We profiled transcripts from sorted phloem cells of wild-type and apl mutants to identify the genes regulated by APL in phloem.
Publication Title
Plant development. Arabidopsis NAC45/86 direct sieve element morphogenesis culminating in enucleation.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 230 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Identification of genes up-regulated in ALK-positive and EGFR/KRAS/ALK-negative lung adenocarcinomas.
Publication Title
Identification of genes upregulated in ALK-positive and EGFR/KRAS/ALK-negative lung adenocarcinomas.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples