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GSE2401
Rattus norvegicus
9 Downloadable Samples
Affymetrix Rat Expression 230A Array (rae230a)
Description
Rat kidney in normo- and hypotensive animals.
Publication Title
A physiogenomic approach to study the regulation of blood pressure.
Sample Metadata Fields
No sample metadata fields
View Samples- Rattus norvegicus
- 17 Downloadable Samples
- Affymetrix Rat Genome U34 Array (rgu34c), Affymetrix Rat Genome U34 Array (rgu34a), Affymetrix Rat Genome U34 Array (rgu34b)
Description
Four male SHR/Ola, BN and SHR-18 rats were fed a normal diet and sacrificed at 9 weeks of age. Four male SHR/Ola and SHR-18 rats at 8 weeks of age were fed 1% NaCl for one week and then sacrificed. Kidneys were removed and frozen in liquid nitrogen for all 20 animals. Total RNA was isolated, labelled cRNA was generated and hybridised to Affymetrix Rat RG-U34ABC arrays.
Publication Title
Dissection of chromosome 18 blood pressure and salt-sensitivity quantitative trait loci in the spontaneously hypertensive rat.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Saccharomyces cerevisiae
- 37 Downloadable Samples
Illumina Genome Analyzer II, Illumina HiSeq 2000
Description
A universal feature of the response to stress and nutrient limitation is transcriptional upregulation of genes encoding proteins important for survival. Interestingly, under many of these conditions overall protein synthesis levels are reduced, thereby dampening the stress response at the level of protein expression. For example, during glucose starvation in yeast, translation is rapidly and reversibly repressed, yet transcription of many stress- and glucose-repressed genes is increased. Using ribosome profiling and microscopy, we found that this transcriptionally upregulated gene set consists of two classes: (1) one producing mRNAs that are preferentially translated during glucose limitation and are diffusely localized in the cytoplasm – this class includes many heat shock protein mRNAs; and (2) another producing mRNAs that are poorly translated during glucose limitation, have high rates of translation initiation, and are concentrated in foci that co-localize with P bodies and stress granules – this class is enriched for glucose metabolism mRNAs. Remarkably, the information specifying differential localization and translation of these two classes of mRNAs is encoded in the promoter sequence – promoter responsiveness to heat shock factor (Hsf1) specifies diffuse cytoplasmic localization and preferential translation upon glucose starvation, whereas different promoter elements upstream of genes encoding poorly translated glucose metabolism mRNAs direct these mRNAs to RNA granules under glucose starvation. Thus, promoter sequences and transcription factor binding can influence not only mRNA levels, but also subcellular localization of mRNAs and the efficiency with which they are translated, enabling cells to tailor protein production to environmental conditions. Overall design: Examination of mRNA translation in S. cerevisiae upon glucose starvation.
Publication Title
Promoter sequences direct cytoplasmic localization and translation of mRNAs during starvation in yeast.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples