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CFTR is a tumor suppressor gene in murine and human intestinal cancer.
Age, Specimen part
View SamplesAnalysis of the cystic fibrosis gene Cftr in the colon and small intestine of Cftr-deficient murine model. The hypothesis was loss of Cftr altered expression of genes important in intestinal homeostasis and oncogenic signaling pathways. The results identified potential roles of Cftr in up- or down-regulating major gene clusters that belong to groups of immune response, ion channel, intestinal stem cell and other growth regulators. Overall design: The experiments were designed to analyze the role of Cftr-deficiency in tumorigenesis. The goal of this study was to identify genes and pathways associated with Cftr-deficiency in Apc wildtype and ApcMin mice. Total RNAs were isolated from mice, and subjected to deep sequencing, in duplicates, using Illumina HiSeq 2500. Samples that were sequenced in the same batch were analyzed in pair-wise using Tophat-Cuffdiff pipeline as outlined in Nature Protocol from Trapnell C. et al, 2012. The results indicated that Cftr-deficiency overlapped with genes and pathways involved in immune and inflammatory signaling, stem cell regulation, and Wnt/beta catenin signaling. Total RNA was isolated from multiple colon tumors and multiple small intestine tumors from Apc wildtype Cftr-deficient mice, ApcMin Cftr-deficient mice, and ApcMin Cftr wildtype mice. Total RNA was also obtained from Apc wildtype normal colon (epithelial cells) and normal duodenum (whole duodenum minus villi) from three Cftr wildtype and three Cftr-deficient mice. RNA Seq was then conducted on all samples with at least two replicates for each biological sample. Please note that 1) The 23 mice were processed in several batches, and two sequencing runs were carried out at two different dates. Â To control for the batch effect of sequencing, some samples were included in both runs (run1 and run2). 2) To reach the desired sequencing depth and to keep loading balance, each sample was split into halves, and sequenced on two lanes (L007 and L008 for run1, L006 and L007 for run2). therefore, for 11 samples, there are 4 technical replicates, including the 2-batches and 2-lane sequencing method. For the remaining 12 samples, there are 2 technical replicates, referring to the 2-lane sequencing. 3) some of the mice are heterozygous mutant of CFTR gene (CFTRhet), named as "CFTR knockdown".
CFTR is a tumor suppressor gene in murine and human intestinal cancer.
Age, Specimen part, Subject
View SamplesAnalysis of the cystic fibrosis gene Cftr in the colon and small intestine of Cftr-deficient murine model. The hypothesis was loss of Cftr altered expression of genes important in intestinal homeostasis and oncogenic signaling pathways. The results identified potential roles of Cftr in up- or down-regulating major gene clusters that belong to groups of immune response, ion channel, intestinal stem cell and other growth regulators.
CFTR is a tumor suppressor gene in murine and human intestinal cancer.
Age, Specimen part
View SamplesAdam10, a cell surface protease, cleaving many proteins including TNF-alpha and E-cadherin. Here we investigate the genome wide effects of Adam10 knock out on the transcriptome.
The disintegrin/metalloproteinase Adam10 is essential for epidermal integrity and Notch-mediated signaling.
Specimen part
View SamplesGene expression analysis identified a specific signature of differentially expressed genes discriminating good and poor responders in JMML patients.
Gene expression-based classification as an independent predictor of clinical outcome in juvenile myelomonocytic leukemia.
Specimen part, Disease
View SamplesBackground and Purpose
Upregulated signaling pathways in ruptured human saccular intracranial aneurysm wall: an emerging regulative role of Toll-like receptor signaling and nuclear factor-κB, hypoxia-inducible factor-1A, and ETS transcription factors.
No sample metadata fields
View SamplesCD20 is a clinically validated target for Non-Hodgkins lymphomas and autoimmune diseases. Interactions of CD20 with the B cell receptor (BCR) and components of the BCR signaling cascade have been reported. In this study we show that antibodies against CD20 or activation of the BCR by specific antibodies induce very similar expression patterns of up- or down-regulated genes in NHL cell lines indicating that CD20 may play a role in BCR signaling and vice versa.
Antibodies against CD20 or B-cell receptor induce similar transcription patterns in human lymphoma cell lines.
Cell line, Treatment
View SamplesBackground: Several genetic defects of the nucleotide excision repair (NER) pathway, including deficiency of the Excision Repair Cross-Complementing rodent repair deficiency, complementation group 1 (ERCC1), result in pre-mature aging, impaired growth, microcephaly and delayed development of the cerebellum. Such a phenotype also occurs in ERCC1-knockout mice which survive for up to 4 weeks after birth. Therefore, we analyzed cerebellar and hippocamapal transcriptomes of these animals at 3 weeks of age to identify the candidate mechanisms underlying brain consequences of reduced ERCC1 activity.
Downregulation of cholesterol biosynthesis genes in the forebrain of ERCC1-deficient mice.
No sample metadata fields
View SamplesThe p21 RAS subfamily of small GTPases, including KRAS, HRAS, and NRAS, regulates cell proliferation, cytoskeletal organization and other signaling networks, and is the most frequent target of activating mutations in cancer. Activating germline mutations of KRAS and HRAS cause severe developmental abnormalities leading to Noonan, cardio-facial-cutaneous and Costello syndrome, but activating germline mutations of NRAS have not been reported. Autoimmune lymphoproliferative syndrome (ALPS) is the most common genetic disease of lymphocyte apoptosis and causes autoimmunity as well as excessive lymphocyte accumulation, particularly of CD4-, CD8- ab T cells. Mutations in ALPS typically affect CD95 (Fas/APO-1)-mediated apoptosis, one of the extrinsic death pathways involving tumor necrosis factor receptor (TNFR) superfamily proteins, but certain ALPS individuals have no such mutations. We show here that the salient features of ALPS as well as a predisposition to hematological malignancies can be caused by a heterozygous germline Gly13Asp activating mutation of the NRAS oncogene that does not impair CD95-mediated apoptosis. The increase in active, GTP-bound NRAS augments RAF/MEK/ERK signaling which markedly decreases the pro-apoptotic protein BIM and attenuates intrinsic, nonreceptor-mediated mitochondrial apoptosis. Thus, germline activating mutations in NRAS differ from other p21 Ras oncoproteins by causing selective immune abnormalities without general developmental defects. Our observations on the effects of NRAS activation indicate that RAS-inactivating drugs, such as farnesyl-transferase inhibitors (FTIs) should be examined in human autoimmune and lymphocyte homeostasis disorders.
NRAS mutation causes a human autoimmune lymphoproliferative syndrome.
No sample metadata fields
View SamplesTranscriptomes of mesenchymal stromal cells from bone marrow (bmMSC) were compared to MSC from term placenta (pMSC).
Expression of Desmoglein 2, Desmocollin 3 and Plakophilin 2 in Placenta and Bone Marrow-Derived Mesenchymal Stromal Cells.
Specimen part
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