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Sense and antisense exon profiling across human, mouse, and rat

ABSTRACT: Transcription profiling of sense and antisense transcripts of 10 tissues each from human, mouse, and rat. This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus Rattus norvegicus Homo sapiens

PROVIDER: GSE41409 | GEO | 2012/10/10

SECONDARY ACCESSION(S): PRJNA176887

REPOSITORIES: GEO

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Sense and antisense exon profiling across human, mouse, and rat

Project description:Transcription profiling of sense and antisense transcripts of 10 tissues each from human, mouse, and rat. This SuperSeries is composed of the following subset Series: GSE41462: Antisense exon profiling across human, mouse, and rat GSE41464: Sense exon profiling across human, mouse, and rat We profiled the sense and antisense transcription level of 10 tissues each from human, mouse, and rat. Only Affymetrix core probesets were used. Two technical replicates per sample. Reference for protocol: Ge, X., Rubinstein, W.S., Jung, Y.C., and Wu, Q. (2008). Genome-wide analysis of antisense transcription with Affymetrix exon array. BMC Genomics 9, 27.

2012-10-10 | E-GEOD-41409 | biostudies-arrayexpress

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Antisense exon profiling across human, mouse, and rat

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Sense exon profiling across human, mouse, and rat

Project description:Transcription profiling of sense transcripts of 10 tissues each from human, mouse, and rat. We profiled the sense transcription level of 10 tissues each from human, mouse, and rat. Only Affymetrix core probesets were used. Two technical replicates per sample.

2012-10-10 | E-GEOD-41464 | biostudies-arrayexpress

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Sense-antisense transcript comparison in mouse brain and kidney

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Expression of Mouse and Human Sense-Antisense Transcript

Project description:Increasing numbers of sense–antisense transcripts (SATs), which are transcribed from the same chromosomal location but in opposite directions, have been identified in various eukaryotic species, but the biological meanings of most SATs remain unclear. To improve understanding of natural sense–antisense transcription, we performed comparative expression profiling of SATs conserved among humans and mice. Using custom oligo-arrays loaded with probes that represented SATs with both protein-coding and non-protein–coding transcripts, we showed that 33% of the 291 conserved SATs displayed identical expression patterns in the two species. Among these SATs, expressional balance inversion of sense–antisense genes was mostly observed in testis at a tissue-specific manner. Northern analyses of the individual conserved SAT loci revealed that: (1) a smeary hybridization pattern was present in mice, but not in humans, and (2) small RNAs (about 60 to 80 nt) were detected from the exon-overlapping regions of SAT loci. In addition, further analyses showed marked alteration of sense–antisense expression balance throughout spermatogenesis in testis. These results suggest that conserved SAT loci are rich in potential regulatory roles that will help us understand this new class of transcripts underlying the mammalian genome. Keywords: Expression profile of mouse and human sense-antisense transcript

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Project description:We characterized the expression patterns of sense-antisense transcripts, based on available cDNA sequences, in colon (colorectal) cancer tissues and in normal tissues surrounding the cancer tissues. Although expression balances (ratios) of most of sense and antisense transcript pairs did not change between patients or between normal and cancer tissues, we found 68 sense-antisense transcripts whose expression balances were altered specifically in colon cancer tissues. We conducted DNA microarray analyses by using the same set of probes designed for 2621 sense-antisense pairs to detect transcripts expressed in colon cancer tissues. These probes comprise 2358 pairs for the detection of protein-coding transcripts only, 250 pairs for the detection of protein-coding transcripts paired with non-protein-coding transcripts, and 13 pairs for the detection of non-protein-coding transcripts only.

2011-03-01 | E-GEOD-14398 | biostudies-arrayexpress

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Project description:Comparison of sense (forward probes) and antisense (reverse probes on U74 v1 gene arrays) transcripts in mouse kidney and brain. Positive calls related to antisense transcripts were compared to the cognate signals on the 430 version of mouse genome arrays to obtain genes that co expressed sense and antisense transcripts. This had to be done manually because divergent probe IDs on the two chip generations. Experiment Overall Design: The first Affymetrix U74 mouse gene chips contains reversely oriented probe sets. These probes will hybridize to natural antisense transcripts that overlap with the sense transcript in the cognate area. Affymetrix provided a mask to identify the reverse probes. Positive calls with these reverse probes will give an estimate of the antisense transcriptome in that particular tissue. Comparison of the reversely oriented probes with correctly annotated probes will reveal the expression ratio of sense and antisense transcripts.

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