Human bladder cancer cell line high throughput sequencing
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE173132 | GEO | 2022/04/13
REPOSITORIES: GEO
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Project description:Circular RNAs (circRNAs) have been increasingly indicated to be important participants in the development and progression of various malignant tumors. In this study, we re-analyzed circRNA high-throughout sequencing from human bladder cancer tissues and paired adjacent normal tissues. Then, we discover that a circRNA hsa_circ_0000591, named as circMGA, is significantly downregulated in bladder cancer. FISH assay has been proved that hsa_circ_0008399 mainly located in cytoplasm. Transcriptome analysis was performed to find the potential genes that could be regulated by circMGA.
2024-07-31 | GSE182310 | GEO
Project description:Circular RNAs (circRNAs) have been increasingly indicated to be important participants in the development and progression of various malignant tumors. Our previous studies found that hundreds of circRNAs were aberrantly expressed in bladder cancer (BC) by high-throughput sequencing and we have confirmed that the downregulated circRNAs circHIPK3, BCRC3 and circNR3C1 played inhibitory roles in BC progression. However, the role of these upregulated circRNAs remain to be clarified. In this study, we analyzed circRNA high-throughout sequencing from human tissues and focused on the upregulated circRNAs and identified a novel circular RNA, hsa_circ_0001361 (also named bladder cancer upregulated circRNA-1, BCUC-1), as a new candidate circRNA derived from FNDC3B gene. The expression levels of circRNA and miRNAs in BC tissues and cells were detected by qRT-PCR. Transwell migration, Matrigel invasion, CCK-8, EdU, cell cycle and in vivo tumor metastasis assays were preformed to evaluate the effects of circ0001361 on BC cells. Transcriptome analysis was performed to find the potential genes that could be regulated by BCUC-1. Luciferase reporter, RNA pull-down and fluorescence in situ hybridization (FISH) assays were applied to verify the interaction between BCUC-1 and miR-491-5p.
2019-09-06 | GSE136919 | GEO
Project description:Objective: Bladder outlet obstruction (BOO) is a common urologic disease associated with poorly understood molecular mechanisms. This study aimed to investigate the possible involvements of circRNAs (circular RNAs) and circRNA-encoded proteins in BOO development. Methods: The rat BOO model was established by the partial bladder outlet obstruction surgery. Differential expression of circRNA and protein profiles were characterized by deep RNA sequencing and iTRAQ quantitative proteomics respectively. Novel proteins encoded by circRNAs were predicted through ORF (open reading frame) selection using the GETORF software and verified by the mass spectrometry in proteomics, combined with the validation of their expressional alterations by quantitative RT-PCR. Results: Totally 3051 circRNAs were differentially expressed in bladder tissues of rat BOO model with widespread genomic distributions, including 1414 up-regulated and 1637 down-regulated circRNAs. Our following quantitative proteomics revealed significant changes of 85 proteins in rat BOO model, which were enriched in multiple biological processes and signaling pathways such as the PPAR and Wnt pathways. Among them, 21 differentially expressed proteins were predicted to be encoded by circRNAs and showed consistent circRNA and protein levels in rat BOO model. The expression of five protein-encoding circRNA were further validated by quantitative RT-PCR and mass spectrometry. Conclusion: The circRNA and protein profiles were substantially altered in rat BOO model, with great expressional changes of circRNA-encoded novel proteins.
2022-02-22 | PXD029337 | Pride
Project description:In order to find out circular RNAs profiles in human bladder cancer tissues and normal bladder tissues, we characterized circuclar RNA transcripts by performing RNA-Seq on ribosomal RNA-depleted total RNA from three pairs of human bladder cancer tissues and paired normal bladder tissues.A computational pipeline based on the anchor alignment of unmapped reads was used to identify circular RNAs. Collectively, we identified16,535 distict circular RNAs, most of them origined from exons (88.96%), others from introns, linc RNA, intergenic region, 3’UTR and 5’UTR. Among all these circRNAs, 571 circRNAs were differentially expressed between bladder cancer tissues and normal bladder tissues, and 524 circRNAs were downregulated in bladder cancer tissues (91.2%), others were upreguluated. These significantly differential expressed circular RNA might have regulatory function in bladder cancer, and worth to be further explored.
2017-08-04 | GSE97239 | GEO
Project description:To explore circular RNA (circRNA) expression profiling and their biological functions in bladder cancer, we surveyed the circRNA expression signature of 4 pairs of matched bladder cancer and para-cancer tissues from clinical patients using microarray. Hundreds of significantly changed circRNAs were identified. Our findings provide a novel perspective on transcriptional group and lay the foundation for future research of potential roles of circRNAs in bladder carcinoma.
2016-12-22 | GSE92675 | GEO
Project description:Circular RNAs (circRNAs), formed by the atypical head-to-tail splicing of exons, have re-emerged as a potentially interesting RNA species given recent reports of a surprising diversity and abundance of circRNA in organisms ranging from worm to human. Here, using deep RNA sequencing, we profiled different RNA species in mouse and observed that circRNAs are significantly enriched in neural tissue, relative to other tissues. Using PacBio sequencing, we determined, for the first time, the circular structure of this population of circRNAs as well as their full-length sequences. We discovered that a disproportionate fraction of the brain circRNA population is derived from host genes that code for synaptic proteins. Moreover, based on the separate profiling of the RNAs localized in neuronal cell bodies and neuropil (enriched in axons and dendrites), we found that, on average, circular RNAs are more enriched in the neuropil than their host gene mRNA isoforms. Using high resolution in situ hybridization we, for the first time, directly visualized circRNA punctae in the dendrites of neurons. The host gene origin and location of the circRNA in neurons suggest the possibility that circRNAs might participate in the regulation of synaptic function and plasticity. Consistent with this idea, we observed via profiling at different developmental stages, that the abundance of many circular RNAs changes abruptly at a time corresponding to synaptogenesis. In addition, following a homeostatic downscaling of neuronal activity many circRNAs exhibit significant up or down-regulation. These data indicate that brain circRNAs are positioned to respond to and regulate synaptic function. Circular RNA profiling in 13 different samples in mice and four samples in rat, using Illumina sequencing
2015-02-25 | E-GEOD-61991 | biostudies-arrayexpress
Project description:Circular RNAs (circRNAs) are a large class of animal RNAs. To investigate possible circRNA functions, it is important to understand circRNA biogenesis. Besides human Alu repeats, sequence features that promote exon circularization are largely unknown. We experimentally identified new circRNAs in C. elegans. Reverse complementary sequences between introns bracketing circRNAs were significantly enriched compared to linear controls. By scoring the presence of reverse complementary sequences in human introns we predicted and experimentally validated novel circRNAs. We show that introns bracketing circRNAs are highly enriched in RNA editing or hyper-editing events. Knockdown of the double-strand RNA editing ADAR1 enzyme significantly and specifically up-regulated circRNA expression. Together, our data support a model of animal circRNA biogenesis in which competing RNA:RNA interactions of introns form larger structures which promote circularization of embedded exons, while ADAR1 antagonizes circRNA expression by melting stems within these interactions. Thus, we assign a new function to ADAR1. Examination of 12 samples in different stages of C.elegans development.
2015-01-06 | E-GEOD-63823 | biostudies-arrayexpress
Project description:Circular RNAs (circRNA) are special non-coding RNAs. They are widely present, but with unknown functions. Recent studies have shown that many endogenous circRNAs have sponge function to absorb microRNAs. They can regulate target gene mRNA expression and play important roles in many biological processes. However, expression profile and function of circRNAs in human TSCC haven’t been reported. High-throughput sequencing was performed to identify and annotate from three TSCC tissues and adjacent tissues. A separate set (n=20) of human TSCCs and corresponding adjacent tissues were subjected to RT-PCR for validation of circular RNAs expression profile. GO functional analysis, KEGG pathway analysis, and circRNA–microRNA network analysis were also performed to predict the function of circRNA in TSCC.A total of 12,156 circRNAs were identified and annotated, most of the circRNAs were novel (n=6,231) and exonic (62.09%). Statistical analysis revealed 322 differentially expressed (DE) circRNAs. RT-PCR results showed that circRNA expression in TSCC was higher than that in adjacent tissues. GO functional analysis, KEGG pathway analysis, and circRNA–microRNA network analysis all showed that circRNAs correlated with tumor development and progression to a certain extent. The present study is the first to systematically characterize and annotate circRNA expression in TSCC, the majority were novel circRNAs. Some host genes of the DE circRNAs were involved in tumor signaling pathway and had complicated correlations with tumor-relevant microRNAs, indicating that circRNAs might be promoted development and progression of TSCC.
2018-12-31 | GSE118750 | GEO
Project description:Bladder cancer (BCa) is one of the most common genitourinary malignancies worldwide, with approximately 429,800 new cases and 165,100 deaths annually in the world. Recently, circular RNA (circRNA), a class of non-coding RNA generated from pre-mRNA back splicing, has emerged as crucial mediator in various tumor initiation and progression. To identify essential circRNA that involves in the progression of BCa, Next generation sequencing (NSG) was performed in four paired BCa tissues and normal adjacent tissues (NAT).
2022-03-12 | GSE191036 | GEO
Project description:To explore the potential involvement of circular RNAs (circRNAs) in pancreatic ductal adenocarcinoma (PDAC) oncogenesis, we conducted circRNA profiling in six pairs of human PDAC and adjacent normal tissue by microarray. Our results showed that clusters of circRNAs were aberrantly expressed in PDAC compared with normal samples, and provided potential targets for future treatment of PDAC and novel insights into PDAC biology. Analyze circular RNA expression in pancreatic ductal adenocarcinoma (PDAC) by microarray platform.
2015-11-20 | E-GEOD-69362 | biostudies-arrayexpress