Consecutive caerulein injections induce an acute pancreatitis in mice. Here, we recorded gene expression levels at different stages of pancreatic regeneration in wild-type mice as well as
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Specimen part, Time
View SamplesPancreas organogenesis is a highly dynamic process where neighbouring tissue interactions lead to dynamic changes in gene regulatory networks that orchestrates endocrine, exocrine and ductal lineage formation. To understand the spatio-temporal regulatory logic we have used the Forkhead transcription factor Foxa2-Venus fusion (FVF) knock-in reporter mouse to separate the FVF+ pancreatic epithelium from the FVF- surrounding mesenchyme and blood vessels to perform a whole genome-wide mRNA expression profiling at embryonic day (E)12.5-15.5. This allowed us to annotate genes and molecular processes differentially regulated in these cell types and compartments of the pancreas to generate a dynamic transcriptional landscape.
The global gene expression profile of the secondary transition during pancreatic development.
Specimen part
View SamplesLMP2A of Epstein-Barr virus is a receptor that mimics an activated B cell receptor, BCR. K1 and K15, related receptors of Kaposi sarcoma-associated herpes virus, KSHV, are expressed in virus-associated tumors but their functions are less obvious. We addressed this uncertainty with mutant EBVs encoding the KSHV genes K1 or K15 in lieu of LMP2A and infected primary human B cells with them. K1 and K15 encoded proteins appear to have noncomplementing redundant functions in this model but our findings suggest that both KSHV proteins can replace LMP2As key activities contributing to the survival, activation and proliferation of B cells.
K1 and K15 of Kaposi's Sarcoma-Associated Herpesvirus Are Partial Functional Homologues of Latent Membrane Protein 2A of Epstein-Barr Virus.
Specimen part, Subject
View SamplesThis dataset was created to study M-CSF dependent in vitro differentiation of human monocytes to macrophages as a model process to demonstrate that independent component analysis (ICA) is a useful tool to support and extend knowledge-based strategies and to identify complex regulatory networks or novel regulatory candidate genes.
Analyzing M-CSF dependent monocyte/macrophage differentiation: expression modes and meta-modes derived from an independent component analysis.
Specimen part
View SamplesThe objective of this experiment was to test the effect, at a transcrptomic level, of lymphotoxin-beta receptor activation in HBV-infected differentiated HepaRG cells
Specific and nonhepatotoxic degradation of nuclear hepatitis B virus cccDNA.
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View SamplesAg recognition via the TCR is necessary for the expansion of specific T cells that then contribute to adaptive immunity as effector and memory cells. Because CD4+ and CD8+ T cells differ in terms of their priming APCs and MHC ligands we compared their requirements of Ag persistence during their expansion phase side by side. Proliferation and effector differentiation of TCR transgenic and polyclonal mouse T cells were thus analyzed after transient and continuous TCR signals. Following equally strong stimulation, CD4+ T cell proliferation depended on prolonged Ag presence, whereas CD8+ T cells were able to divide and differentiate into effector cells despite discontinued Ag presentation. CD4+ T cell proliferation was neither affected by Th lineage or memory differentiation nor blocked by coinhibitory signals or missing inflammatory stimuli. Continued CD8+ T cell proliferation was truly independent of self-peptide/MHC-derived signals. The subset divergence was also illustrated by surprisingly broad transcriptional differences supporting a stronger propensity of CD8+ T cells to programmed expansion. These T cell data indicate an intrinsic difference between CD4+ and CD8+ T cells regarding the processing of TCR signals for proliferation. We also found that the presentation of a MHC class IIrestricted peptide is more efficiently prolonged by dendritic cell activation in vivo than a class I bound one. In summary, our data demonstrate that CD4+ T cells require continuous stimulation for clonal expansion, whereas CD8+ T cells can divide following a much shorter TCR signal.
Differential kinetics of antigen dependency of CD4+ and CD8+ T cells.
Specimen part, Treatment
View SamplesIncreased levels of blood plasma urea were used as phenotypic parameter for establishing novel mouse models for kidney diseases on the genetic background of C3H inbred mice in the phenotype-driven Munich ENU mouse mutagenesis project. The phenotypically mutant line HST014 was established and further analyzed. The causative mutation was detected in the gene Kctd1 which leads to the amino acid exchange Kctd1I27N thereby affecting the functional BTB domain of the protein. This line is the first mouse model harbouring a Kctd1 mutation. Kctd1I27N homozygous mutant mice die perinatally. Standardized, systemic phenotypic analysis of heterozygous mutants was carried out in the German Mouse Clinic. Systematic morphological investigation of the external physical appearance found no mutation-specific differences. Main phenotypic changes were kidney dysfunction, minor cardiovascular and neurological alterations as well as low plasma corticosterone levels. Genome-wide RNA expression analysis at the age of 4 months revealed few regulated genes in brain and heart, and over 100 significantly regulated genes in kidneys of heterozygous mutants.
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Age
View SamplesHuman velocardiofacial syndrom/DiGeorg (VCFS/DGS) syndrom is a complex developmental disease with various expression of a large number of phenotypes. Craniofacial, cardiac, behavioural and endocrinological phenotypes are cardinal symptoms liked to the 22Q11.2 deletion occuring in 1/4.000 births. Several genes located within the 1.5 to 3 Mb deletion resemble a number of phenotypes demonstrated in mouse models for these genes including the endothelin receptor A (Ednra) gene. This is the first report on gene dosage effects observed in a dominant mouse model carrying an EdnraY129F point-mutation. EdnraY129F/+ mice are viable despite a strong cardiac phenotype alike to Fallot's tetralogy concomitant with cardiofacial, otolaryngeal phenotypes and deafness.
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Sex, Age, Specimen part
View SamplesLysosomal storage diseases are congenital lipid metabolism disorders, often accompaning by male infertility. Sms1, the enzyme, that generates sphingomyelin from ceramides seems to be involved in spermatogeneis and spermiogenesis. Therefore, testis but also muscle and brain of a mouse line carrying an insertional mutation in Sms1 were analysed.
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Age, Specimen part
View SamplesPRDM family members encode for progeins functionally associated with the control of cell proliferation, differentiation as well as apoptosis action in cell and tissue-specific menner. As important factors in maintenance and differentiation of human and mouse ES cells several PRDM family members were identified. Prdm11 has and outsider position within the PRDM family due to the lack of zinc-finger domains. However, a zic-finger binding motive i present and likely assue the function of protein-protein interactionl. Prdm11 was described as a candidate for tumor suppresser. However, the function of this gene is still unknown. Our study give evidence a new functional association of Prdm11 in allergic disease and asthma.
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Sex, Age, Treatment
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