Most human pre-mRNAs are spliced into linear molecules that retain the exon order defined by the genomic sequence. By deep sequencing of RNA from a variety of normal and malignant human cells, we found RNA transcripts from many human genes in which the exons were arranged in a non-canonical order. Statistical estimates and biochemical assays provided strong evidence that a substantial fraction of the spliced transcripts from hundreds of genes are circular RNAs. Our results suggest that a non-canonical mode of RNA splicing, resulting in a circular RNA isoform, is a widespread and perhaps general feature of the gene expression program in human cells. Overall design: 3 samples of non-malignant primary human leukocytes, one replicate each
Circular RNAs are the predominant transcript isoform from hundreds of human genes in diverse cell types.
Specimen part, Subject
View SamplesCirculating cell-free RNA in the blood provides a potential window into the health, phenotype, and developmental programs of a variety of human organs. We used high-throughput methods of RNA analysis such as microarrays and next-generation sequencing to characterize the global landscape of circulating RNA in human subjects. By focusing on tissue-specific genes, we were able to identify the relative contributions of these tissues to circulating RNA and monitor changes during tissue development and neurodegenerative disease states.
Noninvasive in vivo monitoring of tissue-specific global gene expression in humans.
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View SamplesCirculating cell-free RNA in the blood provides a potential window into the health, phenotype, and developmental programs of a variety of human organs. We employed high throughput methods of RNA analysis such as microarrays and next-generation sequencing to characterize the global landscape circulating RNA in a cohort of human subjects. By focusing on genes whose expression is highly specific to certain tissues, we were able to identify the relative contributions of these tissues to circulating RNA, and to monitor changes in tissue development and health.
Noninvasive in vivo monitoring of tissue-specific global gene expression in humans.
Specimen part
View SamplesMutant p53 proteins, resulting from the missense mutations of the TP53 tumor suppressor gene, possess gain-of-function activities and are among the most robust oncoproteins in human tumors. They are potentially important therapeutic targets. No studies to date have distinguished common, therapeutically relevant mutant p53 gain-of-function effects from effects specific to different mutant variants and cell backgrounds. here we performed RNA-seq analysisin MDA-MB-231 (R280K) upon silencing TP53 or the control siRNA. Overall design: MDA-MB-231 (R280K) cell line was transfected with control or p53 siRNA.So The study comprises one experimental cell line,in triplicate.
Proteasome machinery is instrumental in a common gain-of-function program of the p53 missense mutants in cancer.
No sample metadata fields
View SamplesLow back pain is a major cause of disability especially for people between 20 and 50 years of age. As a costly healthcare problem, it imposes a serious socio-economic burden. Current surgical therapies have considerable drawbacks and fail to replace the normal disc in facilitating spinal movements and absorbing load. Therefore, the focus of regenerative medicine is on identifying biomarkers and signalling pathways to improve our understanding about the cascades of disc degeneration and allow for the design of specific therapies. We hypothesized that comparing microarray profiles from degenerative and non-degenerative discs will lead to the identification of dysregulated signalling and pathophysiological targets. Microarray data sets were generated from human annulus fibrosus cells and analysed using IPA ingenuity pathway analysis system. Gene expression values were validated by qRT-PCR, and respective proteins were identified by immunohistochemistry. Microarray analysis revealed 17 dysregulated molecular markers and various dysregulated cellular functions, including cell proliferation and inflammatory response, in the human degenerative annulus fibrosus. The most significant canonical pathway induced in degenerative annulus fibrosus was found to be the interferon signalling pathway. In conclusion, this study indicates interferon-alpha signalling pathway activation with IFIT3 and IGFBP3 up-regulation which may affect cellular function in human degenerative disc.
Gene Expression Profiling Identifies Interferon Signalling Molecules and IGFBP3 in Human Degenerative Annulus Fibrosus.
Specimen part, Subject
View SamplesThe ketogenic diet (KD) is an anticonvulsant treatment that has been used to manage medically-intractable epilepsies. The KD requires 10-12 days to become maximally effective, suggesting that changes in gene expression are involved in its anticonvulsant action. Using the Affymetrix rat arrays (RAE230A), 6 control samples and 5 KD samples were run.
Mitochondrial biogenesis in the anticonvulsant mechanism of the ketogenic diet.
No sample metadata fields
View SamplesPancreatic ductal adenocarcinoma (PDAC) has a characteristically dense stroma comprised predominantly of cancer associated fibroblasts (CAFs). CAFs promote tumor growth, metastasis and treatment resistance. We aimed to investigate the molecular changes and functional consequences associated with chemotherapy treatment of PDAC CAFs.
Chemotherapy-Induced Inflammatory Gene Signature and Protumorigenic Phenotype in Pancreatic CAFs via Stress-Associated MAPK.
Specimen part
View SamplesPTK2 was knocked down by doxycycline-dependent expression of small hairpin RNA against PTK2 in Breast cancer cell lines. Overall design: mRNA expression profiles of the breast cancer of Homo sapiens with or without expressing PTK2 were examined by Illumina Hi-seq 2500.
<i>FAK</i>-Copy-Gain Is a Predictive Marker for Sensitivity to FAK Inhibition in Breast Cancer.
Specimen part, Subject
View SamplesMyogenic differentiation relies on Pax7 function. We used mouse embryonic fibroblasts lacking functional Pax7 to follow its role in terminally differentiated cells.
Cell cycle regulation of embryonic stem cells and mouse embryonic fibroblasts lacking functional Pax7.
Specimen part
View SamplesUsing a human colorectal cancer cell line we incremented its metastatic capacity in a mouse model of liver and lung metastasis. Afterwards, a comparison between the different metastatic derivatives is done.
Colon cancer cells colonize the lung from established liver metastases through p38 MAPK signalling and PTHLH.
Disease, Cell line
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