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GSE8906
Mus musculus
8 Downloadable Samples
Affymetrix Murine Genome U74A Version 2 Array (mgu74av2)
Description
Selection of B cells subjected to hypermutation in germinal centres (GC) during T-dependent (TD) antibody responses yields memory cells and long-lived plasma cells that produce high affinity antibodies biased to foreign antigens rather than self-antigens. GC also form in T-independent (TI) responses to polysaccharide antigens but failed selection results in GC involution and memory cells are not generated. To date there are no markers that allow phenotypic distinction of T-dependent and T-independent germinal centre B cells. We have now compared the global gene expression of GC B cells purified from mice immunized with either TD or TI antigens and identified eighty genes that are differentially expressed in TD GC.
Publication Title
Axon growth and guidance genes identify T-dependent germinal centre B cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 7 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
The skin is a protective barrier against external insults and any lesion must be rapidly and efficiently repaired. Dermal fibroblasts are the major source of extracellular connective tissue matrix and play an important role in wound healing. Vitamin C is an important water-soluble free radical scavenger and an essential cofactor for collagen synthesis by dermal fibroblasts and, consequently, may contribute to the maintenance of healthy skin. Using microarray analysis, we investigated the effects of long-term exposure to a stable vitamin C derivative, ascorbic acid 2-phosphate (AA2P), in contact-inhibited populations of primary human dermal fibroblasts. Compared with "scorbutic" cells, cells exposed to AA2P increased the expression of genes associated with DNA replication and repair and with the G(2)/M phase of the cell cycle. Consistent with the gene expression changes, AA2P increased the mitogenic stimulation of quiescent fibroblasts by serum factors and cell motility in the context of wound healing. Furthermore, AA2P-treated fibroblasts showed faster repair of oxidatively damaged DNA bases. We propose that vitamin C may protect the skin by promoting fibroblast proliferation, migration, and replication-associated base excision repair of potentially mutagenic DNA lesions, and we discuss the putative involvement of hypoxia-inducible transcription factor-1 and collagen receptor-related signaling pathways.
Publication Title
Gene expression profiling reveals new protective roles for vitamin C in human skin cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Gallus gallus
- 12 Downloadable Samples
Illumina Genome Analyzer
Description
Background: Heat stress triggers an evolutionarily conserved set of responses in cells. The transcriptome responds to hyperthermia by altering expression of genes to adapt the cell or organism to survive the heat challenge. RNA-seq technology allows rapid identification of environmentally responsive genes on a large scale. In this study, we have used RNA -seq to identify heat stress responsive genes in the chicken male white-leghorn hepat ocellular (LMH) cell line. Result: The transcripts of 812 genes were responsive to heat stress (p <0.01) with 235 genes up- regulated and 577 down-regulated following 2.5 hours of heat stress. Among the up- regulated were genes whose products function as chaperones, along with genes aff ecting collagen synthesis and deposition, transcription factors, chromatin remodelers and genes modulating the WNT and TGF-beta pathways. Predominant among the down-regulated genes were ones that affect DNA replication and repair along with chromosom al segregation. Many of the genes identified in this study have not been previously implicated in the heat stress response. Conclusion: These data extend our understanding of the transcriptome response to heat stress. Many of the identified biological processes and pathways likely function in adapting cells and organisms to hyperthermic stress. This study may provide important guides to future efforts attempting to improve species abilities to withstand heat stress through genome wide association studies and breeding. In addition, the genes down regulated by heat stress may provide important targets for improving hyperthemic treatment in cancer patients. Overall design: Cells were grown at either control ( 37oC) or heat stress (43oC) temperatures for 2.5 hours.
Publication Title
Transcriptome response to heat stress in a chicken hepatocellular carcinoma cell line.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Homo sapiens
- 3 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Integrated epigenome profiling of repressive histone modifications, DNA methylation and gene expression in normal and malignant urothelial cells.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 3 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
To gain a more depth knowledge of repressive epigenetic gene regulation in UCC, we have profiled H3K9m3 and H3K27m3 in normal and malignant urothelial cells. We matched these profiles to those 5-methylcytosine and gene expression. We hypothesized that differences represent pro-carcinogenic events within the urothelium.
Publication Title
Integrated epigenome profiling of repressive histone modifications, DNA methylation and gene expression in normal and malignant urothelial cells.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Binding loci of RelA-containing nuclear factor-kappaB dimers in promoter regions of PHM1-31 myometrial smooth muscle cells.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
A study to define the binding loci of RelA-containing NF-kappaB dimers and subsequent correlation with gene expression in a human myometrial smooth muscle cell line after exposure to TNF.
Publication Title
Binding loci of RelA-containing nuclear factor-kappaB dimers in promoter regions of PHM1-31 myometrial smooth muscle cells.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 13 Downloadable Samples
- Illumina MouseRef-8 v2.0 expression beadchip
Description
Analysis of the gene expression level of 4T1 orthotopic tumors in mice with and without pericyte depletion.
Publication Title
Targeting vascular pericytes in hypoxic tumors increases lung metastasis via angiopoietin-2.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Human ES or iPS Cells were differentiated into endothelial cells (ECs) defined by expression of CD31 (PECAM1) and CD144 (VE-Cadherin) on the cell surface. All ES or iPS derived ECs were greater than 90% double positive for these two markers.
Publication Title
Limited gene expression variation in human embryonic stem cell and induced pluripotent stem cell-derived endothelial cells.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 8 Downloadable Samples
- Illumina HiSeq 4000
Description
TRAP-seq gene expression profiling. GFP-L10a is expressed in BDNF+ or PACAP+ in preoptic area. Bdnf+ or Pacap+ cells in the preoptic area are labelled with GFP-L10a fusion protein expression to study cell-type specific gene expression. We used adult BDNF-Cre (custom generated, discussed in submitted paper) and Pacap-Cre mice (Allen Brain Institute, gift Hongkui Zeng) and injected Cre-depndent adenoassociated virus (AAV2-EF1a-DIO-EGFP-L10a, custom made) into the ventromedial preoptic area. Overall design: Comparison of Immunoprecipitation and Input fraction mRNA
Publication Title
Warm-Sensitive Neurons that Control Body Temperature.
Sample Metadata Fields
Specimen part, Cell line, Subject
View Samples