Mus musculus
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: MODEL1311110000MODEL1109130000MODEL1311110001MODEL1703310000
PROVIDER: PRJNA12247 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The NIH Mammalian Gene Collection (MGC) program aims to identify, sequence, and provide full-length cDNA clone reagents.
| PRJNA10872 | ENA
Project description:Production of biopharmaceuticals relies on the expression of mammalian cDNAs in host organisms. Here we show that the expression of a human cDNA in the moss Physcomitrium patens generates the expected full-length and four additional transcripts due to unexpected splicing. This mRNA splicing results in non-functional protein isoforms, cellular misallocation of the proteins and low product yields. We integrated these results together with the results of our analysis of all 32,926 protein-encoding Physcomitrella genes and their 87,533 annotated transcripts in a web application, physCO, for automatized optimization. A thus optimized cDNA results in about twelve times more protein, which correctly localizes to the ER. An analysis of codon preferences of different production hosts suggests that similar effects occur also in non-plant hosts. We anticipate that the use of our methodology will prevent so far undetected mRNA heterosplicing resulting in maximized functional protein amounts for basic biology and biotechnology.
2022-01-10 | PXD026651 | Pride
Project description:To identify putative transcripts that might interact with Hang, we performed a cDNA microarray experiment in which we compared transcription levels in the heads of control and hangAE10 mutants. Experimental and control probes were simultaneously hybridized to custom-made glass cDNA microarrays (DGC Drosophila v1 6k array, GEO accession no. GPL22680) that contained 6024 PCR-amplified cDNAs (the DGC 1.0 collection of 5849 non-redundant cDNAs was kindly provided by the Berkeley Drosophila Genome Project) and analysed using a GenePix 4000A Microarray Scanner (Axon Instruments, Union City, CA). Values were further processed as log2-transformed ratios and analysed with Microsoft Excel, Cluster analysis (Eisen et al., 1998), and the Significance Analysis of Microarrays (SAM) software package (Tusher et al., 2001). The ratios were filtered to eliminate all values that did not produce signals above background in at least four out of the five replicate experiments. cDNA spots for which the expression between two hybridized samples of RNA with a log2 value > 0.8 differed in at least two experiments were retained for further analysis.
2016-12-09 | GSE91049 | GEO
Project description:BACKGROUND: In order to contribute to the establishment of a complete map of transcribed regions of the human genome, we constructed a testicular cDNA library for the cynomolgus monkey, and attempted to find novel transcripts for identification of their human homologues. RESULT: The full-insert sequences of 512 cDNA clones were determined. Ultimately we found 302 non-redundant cDNAs carrying open reading frames of 300 bp-length or longer. Among them, 89 cDNAs were found not to be annotated previously in the Ensembl human database. After searching against the Ensembl mouse database, we also found 69 putative coding sequences have no homologous cDNAs in the annotated human and mouse genome sequences in Ensembl.We subsequently designed a DNA microarray including 396 non-redundant cDNAs (with and without open reading frames) to examine the expression of the full-sequenced genes. With the testicular probe and a mixture of probes of 10 other tissues, 316 of 332 effective spots showed intense hybridized signals and 75 cDNAs were shown to be expressed very highly in the cynomolgus monkey testis, but not ubiquitously. CONCLUSIONS: In this report, we determined 302 full-insert sequences of cynomolgus monkey cDNAs with enough length of open reading frames to discover novel transcripts as human homologues. Among 302 cDNA sequences, human homologues of 89 cDNAs have not been predicted in the annotated human genome sequence in the Ensembl. Additionally, we identified 75 dominantly expressed genes in testis among the full-sequenced clones by using a DNA microarray. Our cDNA clones and analytical results will be valuable resources for future functional genomic studies. Keywords: other
2003-07-16 | GSE513 | GEO
Project description:We provide an annotated cDNA clone collection which is particularly suitable for transcriptomic analysis in the mouse brain. Using it on microarrays, we compared the transcriptome of EGFP positive and negative cells in a parvalbumin-egfp transgenic background and showed that more than 30 % of clones are differentially expressed. Our clone collection will be a useful resource for the study of the transcriptome of single cell types. Keywords: Cell type comparison
2008-08-22 | GSE8968 | GEO
Project description:We tried to find the target genes of miR-100 in MGC-803 and SK-BR-3 cells, thus we uesd specific miR-100 inhibitor to knock down the level of miR-100 in the cells, with this condition, we used this mRNA microarray to find the genes whose amount changed. and they may be the target genes that miR-100 mediated. Total of four chips, MGC-AMO, MGC-NC, SK-AMO, SK-NC. MGC and SK represents MGC-803 and SK-BR-3 cells respectively. AMO is the specific miR-100 inhibitor and NC is negative control.
2014-01-09 | E-GEOD-53909 | biostudies-arrayexpress
Project description:Used a DNA tag sequencing and mapping strategy called gene identification signature (GIS) analysis, in which 5' and 3' signatures of full-length cDNAs are accurately extracted into paired-end ditags (PETs) that are concatenated for efficient sequencing and mapped to genome sequences to demarcate the transcription boundaries of every gene. GIS analysis is potentially 30-fold more efficient than standard cDNA sequencing approaches for transcriptome characterization. Keywords: Paired End DiTags
2008-12-01 | GSE6694 | GEO
Project description:The purpose of this microarray experiment was to validate the Del-Mar 14K Chicken Integrated Systems Microarray for different chicken tissues and to determine the utility of this chicken cDNA microarray for other closely related and more distant avian species. The Del-Mar 14 K array was constructed from cDNAs amplified from EST clones sequenced from five normalized chicken cDNA libraries derived from neuroendocrine (5,929), abdominal fat (4,800), liver (2,635), skeletal muscle (2,398), reproductive tract (2,008), 387 long (70mer) oligonucleotides and 72 quality control spots. The array contains 17,770 cDNA clones, where protein matches were found by BlastX analysis for 68% of chicken contigs and 46% of singleton sequences represented on the array. A reference RNA design was used for the hybridization of total RNA from four chicken tissues (liver, abdominal fat, breast muscle and hypothalamus) and the cross-species hybridization (CSH) of total RNA from tissue from birds representing four orders of the Class Aves [Galliformes (chicken, Coturnix quail and domestic turkey), Anseriformes (Peking duck), Falconiformes (American kestrel) and Passeriformes (American tree sparrow)]. A reference RNA pool was made from an equal amount of high-quality total RNA extracted from chicken liver, abdominal fat, breast muscle and hypothalamus. Each of the 43 microarrays was co-hybridized with Cy3-labeled cDNA targets from one of the avian tissue samples and Cy5-labled cDNA targets from the reference chicken RNA pool. Loess-normalized data were used to determine the number of cDNAs expressed in chicken tissues and the number of genes (cDNAs) detectable by cross-hybridization with various avian tissue samples. The Cy5-labeled reference samples were used to determine the coefficient of variation across the 43 microarrays. This study shows a remarkably high level of cross hybridization of Cy3-labeled cDNA targets from a wide range of avian species to the Del-Mar 14K microarray, where 38 to 62% of the cDNA probes on the chicken array (genes) were detectable. Keywords: Transcriptional profiling, Del-Mar 14K Chicken Integrated Systems Microarray validation, multi-tissues, cross-species hybridization, class Aves
2007-11-12 | GSE9500 | GEO
Project description:Aberrant activation of the translation initiation machinery is a common property of malignant cells, and is essential for breast carcinoma cells to manifest a malignant phenotype. How does sustained activation of the rate limiting step in protein synthesis so fundamentally alter a cell? In this report, we test the post transcriptional operon theory as a possible mechanism, employing a model system in which apoptosis resistance is conferred on NIH 3T3 cells by ectopic expression of eIF4E. We show (i) there is a set of 255 transcripts that manifest an increase in translational efficiency during eIF4E-mediated escape from apoptosis; (ii) there is a novel prototype 55 nt RNA consensus hairpin structure that is overrepresented in the 5'-untranslated region of translationally activated transcripts; (iii) the identified consensus hairpin structure is sufficient to target a reporter mRNA for translational activation under pro-apoptotic stress, but only when eIF4E is deregulated; and (iv) that osteopontin, one of the translationally activated transcripts harboring the identified consensus hairpin structure functions as one mediator of the apoptosis resistance seen in our model. Our findings offer genome-wide insights into the mechanism of eIF4E-mediated apoptosis resistance and provide a paradigm for the systematic study of posttranscriptional control in normal biology and disease. To globally address the issue of which transcripts mediate the anti-apoptotic functions of eIF4E, we used a model in which NIH 3T3 cells ectopically overexpress translation initiation factor 4E (eIF4E) resulting in an apoptosis-resistant and tumorigenic phenotype. We performed a comprehensive study of apoptosis resistance in the NIH 3T3/4E model using an array containing 15k cDNAs and ESTs (NIH 15k collection printed at The Ontario Cancer Institute). To facilitate data analysis in the two-color competitive hybridization microarray approach employed, we used a universal standard mRNA [non-stratified poly(A) selected RNA derived from NIH 3T3 cells cultured in full growth medium]. We compared signals generated from this standard to both the light (fractions 4â6, <1 ribosome/transcript) and the heavy (fractions 7â10, >1 ribosomes/transcript) polyribosome fractions of RNA from NIH 3T3 and NIH 3T3/4E cells cultured either in complete growth medium or after 16 h of serum starvation, a time point before any evidence of cytochrome c release from the mitochondria, a signature step at the apex of the cell death program. We selected the 16 h time point in order to identify genes that might govern the decision to enter the apoptotic pathway, and exclude those involved in the actual process of cell execution.
2010-06-10 | E-GEOD-2094 | biostudies-arrayexpress
Project description:To initiate a genomic scale analysis of high altitude maize, we performed expression-profiling experiments using Unigene I cDNA arrays from the Maize Gene Discovery Project that contain 5664 cDNAs printed in triplicate spots; a triplicate set for nearly all cDNAs was printed in at least one additional location on each slide, thus there is a minimum of 6 spots for each cDNA per slide. Four-week-old maize plants grown in the field under the three irradiation regimes no UV-B, solar UV-B or UV-B supplemental were used for the experiments. Samples were collected from adult leaves 9 and 10; samples from 6 plants were pooled for preparation of poly(A)+ RNA. Keywords: parallel sample
2005-01-20 | GSE1807 | GEO