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SRP108766
Mus musculus
23 Downloadable Samples
NextSeq 500
Description
Histological resolution of the murine pancreas occurs within one week after injury. Whether histological resolution constitutes pancreatic recovery at a molecular level is not known. We performed RNA-sequencing on the recovering pancreas to determine the transcriptomic profile within the histologically recovered pancreas. We show that although there is histological resolution one week after injury in mice, compared to baseline (non-injured pancreas), there are still numerous differentially expressed genes (DEGs) at one and even two weeks after injury. Overall, the findings suggest the actual recovery takes longer than initially thought given the differential transcriptomic profile in the pancreas two weeks after injury compared to the baseline pancreas. There is also the possibility of a novel emerging pancreatic transcriptome upon recovery. Overall design: Acute pancreatitis was induced by caerulein hyperstimulation in both male and female C57BL/6 mice. Total RNA was extracted from the head of the murine pancreas in mice at baseline (non-injured; n=8), day 7 (post-injury; n=8), and day 14 (post-injury; n=7). Total stranded RNA libraries (ribo-depleted) were generated and sequenced on the Illumina NextSeq 500 NGS platform. RNA-seq data was analyzed for differentially expressed genes between baseline and day 7 and between baseline and day 14.
Publication Title
Pancreatic gene expression during recovery after pancreatitis reveals unique transcriptome profiles.
Sample Metadata Fields
Sex, Specimen part, Cell line, Subject
View Samples- Drosophila melanogaster
- 8 Downloadable Samples
- Illumina HiSeq 2000
Description
Histone H3 lysine27-to-methionine (H3K27M) gain-of-function mutations occur in highly aggressive pediatric gliomas. Here, we establish a Drosophila animal model for the pathogenic histone H3K27M mutation and show that its overexpression resembles Polycomb repressive complex 2 (PRC2) loss-of-function phenotypes, causing de-repression of PRC2 target genes and developmental perturbations. Similarly, a H3K9M mutant depletes H3K9 methylation levels and suppresses position-effect variegation in various Drosophila tissues. The histone H3K9 demethylase KDM3B/JHDM2 associates with H3K9M nucleosomes and its overexpression in Drosophila results in loss of H3K9 methylation levels and heterochromatic silencing defects. Here we establish histone lysine-to-methionine mutants as robust in vivo tools for inhibiting methylation pathways that also function as biochemical reagents for capturing site-specific histone-modifying enzymes, thus providing molecular insight into chromatin-signaling pathways. Overall design: RNA-seq of wing imaginal discs expressing either H3.3WT-FLAG-HA or H3.3K27M-FLAG-HA.
Publication Title
Histone H3 lysine-to-methionine mutants as a paradigm to study chromatin signaling.
Sample Metadata Fields
Specimen part, Subject
View Samples- Mus musculus, Drosophila melanogaster
- 4 Downloadable Samples
Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
The Eleven-nineteen Lysine-rich Leukemia (ELL)-containing Super Elongation Complex (SEC) containing P-TEFb is a key regulator in the expression of HOX genes in Mixed Lineage Leukemia (MLL)-based leukemia. We have identified an SEC-like complex in Drosophila, as well as a distinct ELL-containing complex that lacks P-TEFb and other components of SEC named the "little elongation complex" (LEC). LEC subunits are highly enriched at RNA Polymerase II (Pol II) transcribed small nuclear RNA (snRNA) genes and the loss of LEC results in decreased snRNA expression in both flies and mammals. The discovery of specificity of SEC and LEC complexes for mRNA and snRNA containing genes, respectively, suggest the presence of specific classes of elongation factors for each class of genes transcribed by RNA polymerase II.
Publication Title
The little elongation complex regulates small nuclear RNA transcription.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Mus musculus
- 5 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
To assess gene expression changes in Irgm1 (Lrg-47) deficient HSCs
Publication Title
Irgm1 protects hematopoietic stem cells by negative regulation of IFN signaling.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 16 Downloadable Samples
- Affymetrix Mouse Gene 2.1 ST Array (mogene21st)
Description
In order to understand differentially regulated gene expression after the different treatments, 4 size matched tumors of each group were analyzed by microarrays.
Publication Title
Regulation of myeloid cells by activated T cells determines the efficacy of PD-1 blockade.
Sample Metadata Fields
Specimen part
View Samples- Drosophila melanogaster
- 377 Downloadable Samples
- Illumina HiSeq 2000
Description
We sequenced mRNA from transverse slices of embryos from a variety of D. melanogaster mutants (bicoid over-expression, bicoid knockdown, hunchback knocdown, and zelda mutant) at the blastoderm stage to determine genome-wide patterns of gene expression. Overall design: mRNA from transverse sections of single D. melanogaster embryos mutant for patterning TFs was sequenced.
Publication Title
Genome-wide measurement of spatial expression in patterning mutants of <i>Drosophila melanogaster</i>.
Sample Metadata Fields
Specimen part, Subject
View Samples- Drosophila melanogaster
- 117 Downloadable Samples
- Illumina HiSeq 2000
Description
We sequenced mRNA from transverse slices of embryos at the blastoderm stage to determine genome-wide patterns of gene expression. Overall design: mRNA from transverse sections of single D. melanogaster embryos was sequenced
Publication Title
Sequencing mRNA from cryo-sliced Drosophila embryos to determine genome-wide spatial patterns of gene expression.
Sample Metadata Fields
Specimen part, Disease, Cell line, Subject
View Samples- Drosophila melanogaster
- 26 Downloadable Samples
- Illumina HiSeq 2000
Description
We sequenced mRNA according to several library prep protocols with known mixtures of two species of Drosophila in order to establish linear response in each protocol. Overall design: For each library prep protocol, mixtures with 0%, 5%, 10%, and 20% D. virilis total RNA was prepared, then libraries prepared according to instructions.
Publication Title
Low-cost, low-input RNA-seq protocols perform nearly as well as high-input protocols.
Sample Metadata Fields
Subject
View Samples- Mus musculus
- 16 Downloadable Samples
- Illumina Genome Analyzer IIx
Description
We report that TAF3, a TBP-associated core promoter factor, is highly enriched in ES cells. In addition to its role in the core promoter recognition complex TFIID, genome-wide binding studies reveal that TAF3 localizes to chromosomal regions bound by CTCF and cohesin. Enrichment for TAF3/CTCF/cohesin bound regions distinguishes TAF3-activated from TAF3-repressed genes. Our findings support a new role of TAF3 in mediating long-range chromatin regulatory interactions to safeguard the finely-balanced transcriptional programs that give rise to pluripotency. Overall design: Comparison of genome-wide expression patterns between TAF3-knockdown and WT embryonic stem cells using mRNA-Seq. Significantly differentially expressed protein-coding genes were identified by comparing control and knock-down samples at each timepoint (ES, embryoid body day 3 (EB3), EB6). Single and paired-end samples were combined at each timepoint, resulting in 3 tests for each gene (based on 8, 4, 4 independent measurements at ES ,EB3, EB6, respectively).
Publication Title
Control of embryonic stem cell lineage commitment by core promoter factor, TAF3.
Sample Metadata Fields
Specimen part, Cell line, Subject, Time
View Samples- Mus musculus
- 12 Downloadable Samples
- Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
Motherhood involves a switch in natural rewards, whereby offspring become highly rewarding. Nucleus accumbens (NAC) is a key CNS region for natural rewards and addictions, but to date no study has evaluated on a large scale the events in NAC that underlie the maternal change in natural rewards. In this study we utilized microarray and bioinformatics approaches to evaluate postpartum NAC gene expression changes in mice. Modular Single-set Enrichment Test (MSET) indicated that postpartum (relative to virgin) NAC gene expression profile was significantly enriched for genes related to addiction and reward in 5 of 5 independently curated databases (e.g., Malacards, Phenopedia). Over 100 addiction/reward related genes were identified and these included: Per1, Per2, Arc, Homer2, Creb1, Grm3, Fosb, Gabrb3, Adra2a, Ntrk2, Cry1, Penk, Cartpt, Adcy1, Npy1r, Htr1a, Drd1a, Gria1, and Pdyn. ToppCluster analysis found maternal NAC expression profile to be significantly enriched for genes related to the drug action of nicotine, ketamine, and dronabinol. Pathway analysis indicated postpartum NAC as enriched for RNA processing, CNS development/differentiation, and transcriptional regulation. Weighted Gene Coexpression Network Analysis identified possible networks for transcription factors, including Nr1d1, Per2, Fosb, Egr1, and Nr4a1. The postpartum state involves increased risk for mental health disorders and MSET analysis indicated postpartum NAC to be enriched for genes related to depression, bipolar disorder, and schizophrenia. Mental health related genes included: Fabp7, Grm3, Penk, and Nr1d1. We confirmed via quantitative PCR Nr1d1, Per2, Grm3, Penk, Drd1a, and Pdyn. This study indicates for the first time that postpartum NAC involves large scale gene expression alterations linked to addiction and reward. Because the postpartum state also involves decreased response to drugs, the findings could provide insights into how to mitigate addictions.
Publication Title
Addiction and reward-related genes show altered expression in the postpartum nucleus accumbens.
Sample Metadata Fields
Specimen part
View Samples