Project description:Furfural is a key inhibitor in S. cerevisiae fermentation causing serious economic loss. To understand the toxic mechanisms of furfural-induced genomic instability and phenotypic evolution, we mapped chromosomal alterations in 21 furfural-treated yeast strains by whole genome SNP microarrays at a resolution about 1kb.
Project description:Primary objectives: The primary objective is to investigate circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
Primary endpoints: circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
Project description:The accompanying dataset is the result of a systematic study to identify the RNA cargoes associated with the cytoskeletal motor proteins of Saccharomyces cerevisiae. We immunopurified, via the use of integrated, C-terminal GFP and 9Myc tags, the five actomyosin motors, Myo1, Myo2, Myo3, Myo4, and Myo5; the kinesin-like proteins Kar3, Kip1, Kip2, Kip3, and Smy1; and the dynein, Dyn1, from S. cerevisiae. Cells were either treated with formaldehyde or with the small molecule latrunculin B. We used formaldehyde crosslinking to stabilize associations between motors proteins and interacting RNAs before IP. Yeast cells growing exponentially in rich medium were treated with formaldehyde, lysed and sonicated, then incubated with magnetic beads coupled to monoclonal antibodies against either 9Myc or GFP to isolate the tagged motor proteins along with any associated RNAs. After IP, the formaldehyde crosslinks were reversed and the enriched RNAs and RNAs purified from the corresponding total lysate were amplified and labeled respectively with Cy5 and Cy3, then jointly hybridized to custom-made, S. cerevisiae oligonucleotide microarrays (Hogan et al., PLoS Biology, 2008). Alternatively, the addition of a low concentration of latrunculin B (2 ug/ml) to live cells to partially solubilize the actin cytoskeleton allowed for successful IP of the motor proteins and associated mRNAs without the need for a chemical crosslinker. In both the case of latrunculin B and formaldehyde treatment, we also performed IPs in which the untagged parent yeast strains were processed for IP and microarray analysis in a manner identical to that of the tagged strains (labeled as mock).
Project description:Formaldehyde (FA) is a commercially important chemical with numerous and diverse uses. In this study, a functional toxicogenomics approach was utilized in the model eukaryotic yeast Saccharomyces cerevisiae to identify genes and cellular processes modulating the cellular toxicity of FA. Our results demonstrate mutant strains deficient in multiple DNA repair pathways were sensitive to FA. The SKI complex and its associated factors, which regulate mRNA degradation by the exosome, were also required for FA tolerance..
2016-11-09 | GSE83398 | GEO
Project description:Whole genome sequencing of wildtype and glo1-deleted mutant yeast strains treated with methylglyoxal
| PRJNA1195887 | ENA
Project description:Whole genome sequencing of wildtype and DNA-repair mutant yeast strains treated with acetaldehyde
| PRJNA1065299 | ENA
Project description:Whole genome sequencing of yeast treated with acetaldehyde
Project description:The accompanying dataset is the result of a systematic study to identify the RNA cargoes associated with the cytoskeletal motor proteins of Saccharomyces cerevisiae. We immunopurified, via the use of integrated, C-terminal GFP and 9Myc tags, the five actomyosin motors, Myo1, Myo2, Myo3, Myo4, and Myo5; the kinesin-like proteins Kar3, Kip1, Kip2, Kip3, and Smy1; and the dynein, Dyn1, from S. cerevisiae. Cells were either treated with formaldehyde or with the small molecule latrunculin B. We used formaldehyde crosslinking to stabilize associations between motors proteins and interacting RNAs before IP. Yeast cells growing exponentially in rich medium were treated with formaldehyde, lysed and sonicated, then incubated with magnetic beads coupled to monoclonal antibodies against either 9Myc or GFP to isolate the tagged motor proteins along with any associated RNAs. After IP, the formaldehyde crosslinks were reversed and the enriched RNAs and RNAs purified from the corresponding total lysate were amplified and labeled respectively with Cy5 and Cy3, then jointly hybridized to custom-made, S. cerevisiae oligonucleotide microarrays (Hogan et al., PLoS Biology, 2008). Alternatively, the addition of a low concentration of latrunculin B (2 ug/ml) to live cells to partially solubilize the actin cytoskeleton allowed for successful IP of the motor proteins and associated mRNAs without the need for a chemical crosslinker. In both the case of latrunculin B and formaldehyde treatment, we also performed IPs in which the untagged parent yeast strains were processed for IP and microarray analysis in a manner identical to that of the tagged strains (labeled as mock). transcription profiling
Project description:ChIP-on chip assays to measure the change in histone H3 K56 acetylation over the yeast genome in wild-type YBL574 yeast strains compared to H3K36A mutant strains.
Project description:Transposable genetic elements are ubiquitous, yet their presence or absence at any given position within a genome can vary between individual cells, tissues, or strains. Transposable elements have profound impacts on host genomes by altering gene expression, assisting in genomic rearrangements, causing insertional mutations, and serving as sources of phenotypic variation. Characterizing a genome?s full complement of transposons requires whole genome sequencing, precluding simple studies of the impact of transposition on interindividual variation. Here, we describe a global mapping approach for identifying transposon locations in any genome, using a combination of transposon-specific DNA extraction and microarray- based comparative hybridization analysis. We use this approach to map the repertoire of endogenous transposons in different laboratory strains of Saccharomyces cerevisiae and demonstrate that transposons are a source of extensive genomic variation. We also apply this method to mapping bacterial transposon insertion sites in a yeast genomic library. This unique whole genome view of transposon location will facilitate our exploration of transposon dynamics, as well as defining bases for individual differences and adaptive potential. Keywords: transposon mapping