Next Generation Sequencing of small non-coding RNAs in the tissue of patients with renal cell carcinoma
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ABSTRACT: Non-coding RNAs play an important role in the pathogenesis of human malignancies. So far, microRNAs have been investigated in detail in clear cell renal cell carcinoma, but the knowledge about other small non-coding RNAs like snoRNA, tRNA and piRNA remains small. There is increasing evidence that these non-coding RNAs are also involved in regulation of gene expression, and we therefore performed small RNA sequencing in a cohort of 18 corresponding normal and malignant tissue samples from patients with clear cell renal cell carcinoma. We observed differential expression of microRNAs, but also some dysregulated tRNA and snoRNA in clear cell renal cell carcinoma tissue
Project description:We sequenced the small RNA transcriptome of prostate cancer at different stages and generated a quantified catalogue of 3927 small non-coding RNAs (sncRNAs) detected in normal and malignant prostate tissue. From these sncRNAs less than half are microRNAs. The remaining sncRNAs represent stable sncRNAs species that originate from snoRNA, tRNA and other sncRNAs.
Project description:MicroRNAs (miRNAs), non-coding RNAs regulating gene expression, are frequently aberrantly expressed in human cancers. Next-generation deep sequencing technology enables genome-wide expression profiling of known miRNAs and discovery of novel miRNAs at unprecedented quantitative and qualitative accuracy. Deep sequencing was performed on 22 fresh frozen clear cell renal cell carcinoma (ccRCC), 11 non-tumoral renal cortex (NRC) samples and 2 ccRCC cell lines (n=35). The 22 ccRCCs patients belonged to 3 prognostic sub-groups, i.e. Those without disease recurrence, with recurrence and with metastatic disease at diagnosis Deep sequencing was performed on 22 fresh frozen clear cell renal cell carcinoma (ccRCC), 11 non-tumoral renal cortex (NRC) samples and 2 ccRCC cell lines (n=35). The 22 ccRCCs patients belonged to 3 prognostic sub-groups, i.e. Those without disease recurrence, with recurrence and with metastatic disease at diagnosis.
Project description:MicroRNAs (miRNAs), non-coding RNAs regulating gene expression, are frequently aberrantly expressed in human cancers. Next-generation deep sequencing technology enables genome-wide expression profiling of known miRNAs and discovery of novel miRNAs at unprecedented quantitative and qualitative accuracy. Deep sequencing was performed on 22 fresh frozen clear cell renal cell carcinoma (ccRCC), 11 non-tumoral renal cortex (NRC) samples and 2 ccRCC cell lines (n=35). The 22 ccRCCs patients belonged to 3 prognostic sub-groups, i.e. Those without disease recurrence, with recurrence and with metastatic disease at diagnosis
Project description:Long non-coding RNAs (lncRNA) play an important role in carcinogenesis, but knowledge of lncRNA expression in renal cell carcinoma is rudimental. We screened 32,183 lncRNA transcripts in malignant and adjacent normal renal tissue and determined dysregulation of approximately 4% of the lncRNA transcripts in clear cell renal cell carcinoma tissue. The distinct changes of lncRNA expression may be used to develop a non-invasive biomarker, because lncRNAs are detectable in bodily fluids.
Project description:Long non-coding RNAs (lncRNA) play an important role in carcinogenesis, but knowledge of lncRNA expression in renal cell carcinoma is rudimental. We screened 32,183 lncRNA transcripts in malignant and adjacent normal renal tissue and determined dysregulation of approximately 4% of the lncRNA transcripts in clear cell renal cell carcinoma tissue. The distinct changes of lncRNA expression may be used to develop a non-invasive biomarker, because lncRNAs are detectable in bodily fluids. Microarray experiments were performed to determine the expression of 32,183 lncRNA transcripts belonging to 17,512 lncRNAs in 15 corresponding normal and malignant renal tissues
Project description:Small RNAs were deep sequenced from the liver and spleen of adult mice in an effort to identify somatic piRNAs. Following sequencing of all small RNAs, known non-coding RNAs were computationally removed from the dataset. The remaining RNAs were then mapped to the genome and analyzed for sequence characteristics (5' base, length) typical of known piRNAs. To determine if any of the identified small RNAs were MIWI2 dependent, we deep sequenced small RNAs from liver and spleen of MIWI2 KO mice and analyzed them as above. We deep sequenced small RNAs from the liver and spleen of one WT mouse and one MIWI2 knock-out mouse. We then trimmed sequencing adapters and removed known ncRNAs (rRNA, tRNA, snoRNA, snRNA, miRNA) from the dataset before aligning reads to the mm9 assembly of the mouse genome.
Project description:Populations of small eukaryotic RNAs, in addition to relatively well recognized molecules (such as miRNAs or siRNAs), also contain fragments derived from all classes of constitutively expressed non-coding RNAs. It has been recently demonstrated that the formation and accumulation of RNA fragments (RFs) is cell-/tissue-specific and depends on internal and external stimuli. Unfortunately, the mechanisms underlying RF biogenesis and function remain unclear. To better understand them, we employed RNA pull-down and mass spectrometry methods to characterize the interaction networks of seven RFs originating from tRNA, snoRNA and snRNA. In addition, we performed an in silico screen of the selected RFs against publicly available cross-linking and immunoprecipitation datasets. We determined that the RF interactome comprises a large number of proteins, which were generally different from those that interact with their parental full length RNAs. Proteins that were differentially bound by the RFs were involved in mRNA splicing, tRNA processing, DNA recombination/replication, protein biosynthesis and carbocyclic acid metabolism. Our data suggest that RFs can be endogenous aptamer-like molecules and potential players in emerging RNA-protein regulatory networks.
Project description:MicroRNAs play a vital role in the process of tumorigenesis. To identify and characterize miRNA Expression in renal cell cancer, we performed microarray based screening of miRNA expression profiles in clear cell, papillary type 1 and papillary type 2 renal cell cancer. We selected cases of confirmed clear cell, papillary type 1 and papillary type 2 renal cell carcinoma and generated pairs of tumor and corresponding normal tissue by manual microdissection.
Project description:Non-coding RNAs are critical players in non-small cell lung cancer (NSCLC). In the present study, we investigate the role of H/ACA box snoRNA and snoRNA-bound ribonucleoproteins (RNP) in the tumorigenesis of NSCLC.
Project description:Non-coding RNAs are critical players in non-small cell lung cancer (NSCLC). In the present study, we investigate the role of H/ACA box snoRNA and snoRNA-bound ribonucleoproteins (RNP) in the tumorigenesis of NSCLC.