Expression profile analysis of C. elegans intermediate sized non-coding transcriptome
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ABSTRACT:
ORGANISM(S): Caenorhabditis elegans
PROVIDER: GSE24023 | GEO | 2010/10/01
SECONDARY ACCESSION(S): PRJNA130269
REPOSITORIES: GEO
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Project description:We detected 32230 transfrags by Tiling array Analysis Software, of which 5866 were transfrags with unknown function (TUF). These TUFs exhibited distinct chromosome location, expression and conservation patterns. Six developmental and two conditional stages of C. elegans 70~500nt transcriptome. L1~L4, mature adult (MA), male (ML), dauer (DU), heat shocked (HS). GSM591423_CB2007199-L4-1.CEL is Ce25b_MF, GPL5634 is Ce25b_MR, CEL file is okay using GPL5634's cdf.
2010-09-30 | E-GEOD-24023 | biostudies-arrayexpress
Project description:We utilized high-throughput RNA-seq to uncover the intermediate-sized noncoding RNAs invovled in UV-DNA Damage Responses in C. elegans. 450 novel transfrags were discovered, some of which show dramatic expression change between the UV irradiation and control. This study should lead to a better understanding of the role of is-ncRNAs invovled in UV-DDR.
2012-05-01 | GSE37063 | GEO
Project description:We utilized high-throughput RNA-seq to uncover the intermediate-sized noncoding RNAs invovled in UV-DNA Damage Responses in C. elegans. 450 novel transfrags were discovered, some of which show dramatic expression change between the UV irradiation and control. This study should lead to a better understanding of the role of is-ncRNAs invovled in UV-DDR. Examination of intermediate-sized transcripts (70-500nt) in L4 larvae of C. elegans strains, including wild-type (N2), UV-irradiated (N2-UV100J/m2) and NER-deficient mutant (xpa-1) strains.
2012-05-01 | E-GEOD-37063 | biostudies-arrayexpress
Project description:Accumulating evidence suggests that non-coding RNAs (ncRNAs) are both widespread and functionally important in many eukaryotic organisms. In this study, we employed a special size fractionation and cDNA library construction method followed by 454 deep sequencing to systematically profile rice intermediate-size ncRNAs. Our analysis resulted in the identification of 1349 ncRNAs in total, including 754 novel ncRNAs of an unknown functional category. Chromosome distribution of all identified ncRNAs showed no strand bias, and displayed a pattern similar to that observed in protein-coding genes with few chromosome dependencies. More than half of the ncRNAs were centered around the plus-strand of the 5' and 3' termini of the coding regions. The majority of the novel ncRNAs were rice specific, while 78% of the small nucleolar RNAs (snoRNAs) were conserved. Tandem duplication drove the expansion of over half of the snoRNA gene families. Furthermore, 90% of the snoRNA candidates were shown to produce small RNAs between 20-30 nt, 80% of which were associated with ARGONAUT proteins generally, and AGO1b in particular. Overall, our findings provide a comprehensive view of an intermediate-size non-coding transcriptome in a monocot species, which will serve as a useful platform for an in-depth analysis of ncRNA functions.
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Project description:BackgroundA network of DNA damage response (DDR) mechanisms functions coordinately to maintain genome integrity and prevent disease. The Nucleotide Excision Repair (NER) pathway is known to function in the response to UV-induced DNA damage. Although numbers of coding genes and miRNAs have been identified and reported to participate in UV-induced DNA damage response (UV-DDR), the precise role of non-coding RNAs (ncRNAs) in UV-DDR remains largely unknown.Methodology/principal findingsWe used high-throughput RNA-sequencing (RNA-Seq) to discover intermediate-size (70-500 nt) ncRNAs (is-ncRNAs) in C. elegans, using the strains of L4 larvae of wild-type (N2), UV-irradiated (N2/UV100) and NER-deficient mutant (xpa-1), and 450 novel non-coding transcripts were initially identified. A customized microarray assay was then applied to examine the expression profiles of both novel transcripts and known is-ncRNAs, and 57 UV-DDR-related is-ncRNA candidates showed expression variations at different levels between UV irradiated strains and non- irradiated strains. The top ranked is-ncRNA candidates with expression differences were further validated by qRT-PCR analysis, of them, 8 novel is-ncRNAs were significantly up-regulated after UV irradiation. Knockdown of two novel is-ncRNAs, ncRNA317 and ncRNA415, by RNA interference, resulted in higher UV sensitivity and significantly decreased expression of NER-related genes in C. elegans.Conclusions/significanceThe discovery of above two novel is-ncRNAs in this study indicated the functional roles of is-ncRNAs in the regulation of UV-DDR network, and aided our understanding of the significance of ncRNA involvement in the UV-induced DNA damage response.
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Project description:Whole transcriptome expression analysis of HFF cells on Affymetrix Human Tiling 1.0 array set. Cells were synchronised by serum starvation and transcriptome-wide expression in G1 phase. Expression data were processed with Tiling Array Software (TAS).
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Project description:Whole transcriptome expression analysis of HFF cells on Affymetrix Human Tiling 1.0 array set. Cells were synchronised by serum starvation and transcriptome-wide expression in G0 phase. Expression data were processed with Tiling Array Software (TAS).
2012-12-18 | GSE29833 | GEO