Similar Datasets
Project description:Circular RNAs (circRNAs) are a new class of endogenous and regulatory non-coding RNAs, but their expressions in tumor and plasma are largely unknown. Here, our study firstly suggested that microarray should be more efficient than RNA sequencing for circRNA profiling. Then, we detected ~80,000 circRNAs expressed in cervical tumors and matched normal tissues by microarray, and ~23,000 of them are differently expressed. The numbers of up- and down-regulated circRNAs during tumorigenesis are almost equal. In addition, we discovered that the expression of different circRNA isoforms from the same linear RNA also different. Strikingly, as much as ~18,000 circRNAs could be robustly detected in plasmas, and ~8,000 circRNAs show different expression after surgery of tumor removal. Altogether, taking advantage of the huge number of circRNAs detected in tumor and plasma, we provide strong evidence for circRNA expression, regulation and potential clinical application as non-invasive biomarkers.
2018-03-01 | GSE90737 | GEO
Project description:Circular RNAs (circRNAs) are a new class of endogenous and regulatory non-coding RNAs, but their expressions in tumor and plasma are largely unknown. Here, our study firstly suggested that microarray should be more efficient than RNA sequencing for circRNA profiling. Then, we detected ~80,000 circRNAs expressed in cervical tumors and matched normal tissues by microarray, and ~23,000 of them are differently expressed. The numbers of up- and down-regulated circRNAs during tumorigenesis are almost equal. In addition, we discovered that the expression of different circRNA isoforms from the same linear RNA also different. Strikingly, as much as ~18,000 circRNAs could be robustly detected in plasmas, and ~8,000 circRNAs show different expression after surgery of tumor removal. Altogether, taking advantage of the huge number of circRNAs detected in tumor and plasma, we provide strong evidence for circRNA expression, regulation and potential clinical application as non-invasive biomarkers.
2018-03-01 | GSE90740 | GEO
Project description:Circular RNAs (circRNAs) are a new class of endogenous and regulatory non-coding RNAs, but their expressions in tumor and plasma are largely unknown. Here, our study firstly suggested that microarray should be more efficient than RNA sequencing for circRNA profiling. Then, we detected ~80,000 circRNAs expressed in cervical tumors and matched normal tissues by microarray, and ~23,000 of them are differently expressed. The numbers of up- and down-regulated circRNAs during tumorigenesis are almost equal. In addition, we discovered that the expression of different circRNA isoforms from the same linear RNA also different. Strikingly, as much as ~18,000 circRNAs could be robustly detected in plasmas, and ~8,000 circRNAs show different expression after surgery of tumor removal. Altogether, taking advantage of the huge number of circRNAs detected in tumor and plasma, we provide strong evidence for circRNA expression, regulation and potential clinical application as non-invasive biomarkers.
2018-03-01 | GSE90739 | GEO
Project description:Circular RNAs (circRNAs) are a new class of endogenous and regulatory non-coding RNAs, but their expressions in tumor and plasma are largely unknown. Here, our study firstly suggested that microarray should be more efficient than RNA sequencing for circRNA profiling. Then, we detected ~80,000 circRNAs expressed in cervical tumors and matched normal tissues by microarray, and ~23,000 of them are differently expressed. The numbers of up- and down-regulated circRNAs during tumorigenesis are almost equal. In addition, we discovered that the expression of different circRNA isoforms from the same linear RNA also different. Strikingly, as much as ~18,000 circRNAs could be robustly detected in plasmas, and ~8,000 circRNAs show different expression after surgery of tumor removal. Altogether, taking advantage of the huge number of circRNAs detected in tumor and plasma, we provide strong evidence for circRNA expression, regulation and potential clinical application as non-invasive biomarkers.
2018-03-01 | GSE90738 | GEO
Project description:Circular RNAs (circRNAs) are a new class of endogenous and regulatory non-coding RNAs, but their expressions in tumor and plasma are largely unknown. Here, our study firstly suggested that microarray should be more efficient than RNA sequencing for circRNA profiling. Then, we detected ~80,000 circRNAs expressed in cervical tumors and matched normal tissues by microarray, and ~23,000 of them are differently expressed. The numbers of up- and down-regulated circRNAs during tumorigenesis are almost equal. In addition, we discovered that the expression of different circRNA isoforms from the same linear RNA also different. Strikingly, as much as ~18,000 circRNAs could be robustly detected in plasmas, and ~8,000 circRNAs show different expression after surgery of tumor removal. Altogether, taking advantage of the huge number of circRNAs detected in tumor and plasma, we provide strong evidence for circRNA expression, regulation and potential clinical application as non-invasive biomarkers.
2018-03-01 | GSE107472 | GEO
Project description:Circular RNAs are super abundant in cervical tumor and plasma detected by high throughput microarray
| PRJNA355644 | ENA
Project description:Circular RNAs are super abundant in cervical tumor and plasma detected by high throughput microarray [RNA-Seq]
| PRJNA420201 | ENA
Project description:Human immortal cervical cell line H8, human cervical cancer cell line SiHa and SiHa transfected with Wnt11-overexpression vector were included in the study. We identified circRNAs differentially expressed between H8 and SiHa or between SiHa and SiHa transfected with OV-Wnt11.
2020-03-25 | GSE147483 | GEO
Project description:BACKGROUND:Circulating RNA (circRNA) regulates various bioactivities in cells. A better understanding of the exosomal circRNA can provide novel insights into the pathogenesis and treatment of Graves' disease (GD). We aimed to profile the differentially expressed circRNAs (DEcRs) in plasma exosomes of patients with GD and speculate and probe the functions of the DEcR by comprehensive bioinformatics analyses. METHODS:Serum exosomes were isolated from five primary GD patients and five healthy controls via ultracentrifugation. After verification with transmission electron microscopy, exosome samples were subjected to microarray profiling using human circRNA microarrays. Two up-regulated and two down-regulated DEcRs were selected for validation in plasma exosomes from 20 GD and 20 healthy control participants using reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR). The circRNA/microRNA/mRNA interaction network was then assembled and the analysis of the Gene Ontology and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways was utilized to predict the potential functions of the DEcR associated genes. RESULTS:There were 15 DEcRs revealed in primary GD cases. The intronic circRNA hsa_circRNA_000102 was confirmed as an up-regulated component in plasma exosomes from patients with GD. The circRNA/microRNA/mRNA interaction network unveiled the most potential targeting microRNAs of hsa_circRNA_000102 and its associated genes. The functional analyses predicted involvement of hsa_circRNA_000102 associated genes in pathways of immune system activation, such as viral infection and interferon-beta signaling. CONCLUSIONS:hsa_circRNA_000102 is a differentially up-regulated plasma exosomal circRNA in patients with GD. Our study highlights multiple pathways, particularly virus infection and interferon-beta signaling, for mediating immune activation in Graves' disease.
| S-EPMC7388456 | biostudies-literature
Project description:Circular RNAs composed of exonic sequence have been described in a small number of genes. Thought to result from splicing errors, circular RNA species possess no known function. To delineate the universe of endogenous circular RNAs, we performed high-throughput sequencing (RNA-seq) of libraries prepared from ribosome-depleted RNA with or without digestion with the RNA exonuclease, RNase R. We identified >25,000 distinct RNA species in human fibroblasts that contained non-colinear exons (a "backsplice") and were reproducibly enriched by exonuclease degradation of linear RNA. These RNAs were validated as circular RNA (ecircRNA), rather than linear RNA, and were more stable than associated linear mRNAs in vivo. In some cases, the abundance of circular molecules exceeded that of associated linear mRNA by >10-fold. By conservative estimate, we identified ecircRNAs from 14.4% of actively transcribed genes in human fibroblasts. Application of this method to murine testis RNA identified 69 ecircRNAs in precisely orthologous locations to human circular RNAs. Of note, paralogous kinases HIPK2 and HIPK3 produce abundant ecircRNA from their second exon in both humans and mice. Though HIPK3 circular RNAs contain an AUG translation start, it and other ecircRNAs were not bound to ribosomes. Circular RNAs could be degraded by siRNAs and, therefore, may act as competing endogenous RNAs. Bioinformatic analysis revealed shared features of circularized exons, including long bordering introns that contained complementary ALU repeats. These data show that ecircRNAs are abundant, stable, conserved and nonrandom products of RNA splicing that could be involved in control of gene expression.
| S-EPMC3543092 | biostudies-literature