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Determination of mRNA transcripts in HeLa cells that are regulated by RENT1

ABSTRACT: HeLa cells were treated with siRNA directed against Luciferase or RENT1 in duplicate (as described in Mendell et al., Science, 2002; PubMed ID:12228722). Transcripts that are differentially expressed between the two experimental conditions are putatively regulated by RENT1. Keywords: repeat sample

ORGANISM(S): Homo sapiens

PROVIDER: GSE1703 | GEO | 2004/08/25

SECONDARY ACCESSION(S): PRJNA90639

REPOSITORIES: GEO

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siRNA of human HeLa cells with RENT1 knockdown

Project description:HeLa cells were treated with siRNA directed against Luciferase or RENT1 in duplicate (as described in Mendell et al., Science, 2002; PubMed ID:12228722). Transcripts that are differentially expressed between the two experimental conditions are putatively regulated by RENT1.

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Poly A- transcripts expressed in HeLa cells.

Project description:Transcripts expressed in eukaryotes are classified as poly A+ transcripts or poly A- transcripts based on the presence or absence of the 3' poly A tail. Most transcripts identified so far are poly A+ transcripts, whereas the poly A- transcripts remain largely unknown.We developed the TRD (Total RNA Detection) system for transcript identification. The system detects the transcripts through the following steps: 1) depleting the abundant ribosomal and small-size transcripts; 2) synthesizing cDNA without regard to the status of the 3' poly A tail; 3) applying the 454 sequencing technology for massive 3' EST collection from the cDNA; and 4) determining the genome origins of the detected transcripts by mapping the sequences to the human genome reference sequences. Using this system, we characterized the cytoplasmic transcripts from HeLa cells. Of the 13,467 distinct 3' ESTs analyzed, 24% are poly A-, 36% are poly A+, and 40% are bimorphic with poly A+ features but without the 3' poly A tail. Most of the poly A- 3' ESTs do not match known transcript sequences; they have a similar distribution pattern in the genome as the poly A+ and bimorphic 3' ESTs, and their mapped intergenic regions are evolutionarily conserved. Experiments confirmed the authenticity of the detected poly A- transcripts.Our study provides the first large-scale sequence evidence for the presence of poly A- transcripts in eukaryotes. The abundance of the poly A- transcripts highlights the need for comprehensive identification of these transcripts for decoding the transcriptome, annotating the genome and studying biological relevance of the poly A- transcripts.

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Tissue gene expression of Xenopus laevis J strain [tissue]

Project description:Comprehensive RNA-seq experiments to measure the expression of homoeologs across different tissues, as a part of the Xenopus laevis genome project. This work is funded by Agency Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT; "Genome Science" Grant ID 221S0002).

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Smoking-mediated Up-regulation of GAD67 Expression in the Human Airway Epithelium

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Effect of facioscapulohumeral dystrophy (FSHD) on skeletal muscle gene expression

Project description:Muscle biopsies taken from vastus lateralis muscle of 30 normal subjects and 19 FSHD subjects (see PubMed ID 17151338) Affymetrix U133A and U133B arrays were scanned both before (S1) and after (S2) antibody enhancement. Effects of age and sex in normal subjects reported previously under GSE362, GSE674, and GSE9676. Keywords: facioscapulohumeral dystrophy, skeletal muscle

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