Saccharomyces cerevisiae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA151043 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Transcriptional derepression uncovers cryptic higher-order genetic interactions
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Project description:Antagonistic pleiotropy conceals molecular adaptations in changing environments
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Project description:Alzheimer’s disease (AD) is hallmarked by progressive neurodegeneration. Aggregation of amyloid-β peptides (Aβ) is thought to play a pivotal role in driving AD pathogenesis, yet the underlying mechanisms remain unclear. Here, we use yeast genome-scale screening to study global synthetic genetic interactions and identify toxicity modifiers of Aβ42. We find that the gene encoding riboflavin kinase (FMN1) and its metabolic product flavin mononucleotide (FMN) are connected to AD. These relationship between Aβ42 and FMN was previously unknown. As a cofactor for flavoenzymes, FMN supplementation appears to attune many cellular processes to ameliorate Aβ42 toxicity. RNA-seq analysis further confirms FMN’s cytoprotective mechanisms. Our findings provide increased understanding of FMN regulated cellular pathways which are associated with potential targets for AD treatment.
2020-02-27 | GSE128905 | GEO
Project description:Pairwise and higher order genetic interactions during the evolution of a tRNA
| PRJNA388412 | ENA
Project description:Effect of either FLO8 or MSS11 deletion and -overexpression on yeast transcript profiles compared to wild type in laboratory yeast strains Σ1278b and S288c - also the effect of FLO11 (MUC1) overexpression in the Σ1278b genetic background The aim of this study was to (1) perform a repeat analysis (to improve statistical analysis of these data sets) similar to data submitted previously (GSE17716) and also (2) study the effect of FLO11 over-expression on the transcriptome. Background: The outer cell wall of the yeast Saccharomyces cerevisiae serves as the interface with the surrounding environment and defines cell-cell and cell-surface interactions. Many of these interactions are facilitated by specific adhesins that belong to the Flo protein family. This family of mannoproteins has been implicated in phenotypes such as flocculation and substrate adhesion as well as pseudohyphal growth. Genetic data strongly suggest that individual Flo proteins are responsible for many specific cellular adhesion phenotypes. However, it remains unclear whether such phenotypes are determined solely by the nature of the expressed FLO genes or rather the result of a combination of FLO gene expression and other cell wall properties and cell wall proteins. Mss11p has been shown to be a central element of FLO1 and FLO11 gene regulation and acts together with the cAMP-PKA-dependent transcription factor Flo8p. We use genome wide transcript analysis to identify genes that are direct ly or indirectly regulated by Mss11p in the genetic backgrounds: Sigma1278b and S288c. Sigma 1278b is the strain historically used for the study of pseudohyphae (FLO11 expression) but we also included S288c as this strain is widely used in the research community and was used to determine the first full genome sequence (Thus correspond with SGD information). We also compare this data with transcriptome data from Sigma 1278b yeast over-expressing FLO8 to compare similarities/differences between these two signalling factors. Finally the effect of FLO11 over-expression in Sigma1278b on global transcription is studied so that we can differentiate between "direct" gene targets of Flo8p or Mss11p, and those regulated as a result by the "indirect" effect caused by modified cell wall Flo11p levels. We used two laboratory yeast strains that behave different with regard to adhesion phenotypes. By comparing yeast deleted in either FLO8 or MSS11 to wild type, or yeast overexpressing these genes, in both genetic backgrounds, we investigate the role of Flo8p and Mss11p on yeast transcription. In addition the effect of the over-expression of the adhesin gene FLO11 was studied in Sigma 1278b. By using similar growth conditions to what we use for adhesion phenotype determination we aim to correlate transcription profile changes to yeast behaviour (phenotypes).
2011-09-20 | E-GEOD-29371 | biostudies-arrayexpress
Project description:Effect of either FLO8 or MSS11 deletion and -overexpression on yeast transcript profiles compared to wild type in laboratory yeast strains Σ1278b and S288c - also the effect of FLO11 (MUC1) overexpression in the Σ1278b genetic background The aim of this study was to (1) perform a repeat analysis (to improve statistical analysis of these data sets) similar to data submitted previously (GSE17716) and also (2) study the effect of FLO11 over-expression on the transcriptome. Background: The outer cell wall of the yeast Saccharomyces cerevisiae serves as the interface with the surrounding environment and defines cell-cell and cell-surface interactions. Many of these interactions are facilitated by specific adhesins that belong to the Flo protein family. This family of mannoproteins has been implicated in phenotypes such as flocculation and substrate adhesion as well as pseudohyphal growth. Genetic data strongly suggest that individual Flo proteins are responsible for many specific cellular adhesion phenotypes. However, it remains unclear whether such phenotypes are determined solely by the nature of the expressed FLO genes or rather the result of a combination of FLO gene expression and other cell wall properties and cell wall proteins. Mss11p has been shown to be a central element of FLO1 and FLO11 gene regulation and acts together with the cAMP-PKA-dependent transcription factor Flo8p. We use genome wide transcript analysis to identify genes that are direct ly or indirectly regulated by Mss11p in the genetic backgrounds: Sigma1278b and S288c. Sigma 1278b is the strain historically used for the study of pseudohyphae (FLO11 expression) but we also included S288c as this strain is widely used in the research community and was used to determine the first full genome sequence (Thus correspond with SGD information). We also compare this data with transcriptome data from Sigma 1278b yeast over-expressing FLO8 to compare similarities/differences between these two signalling factors. Finally the effect of FLO11 over-expression in Sigma1278b on global transcription is studied so that we can differentiate between "direct" gene targets of Flo8p or Mss11p, and those regulated as a result by the "indirect" effect caused by modified cell wall Flo11p levels.
2011-09-21 | GSE29371 | GEO
Project description:In Saccharomyces cerevisiae, specific genes physically relocate from the nucleoplasm to the nuclear periphery concomitant with transcriptional activation, where they associate with the nuclear pore complex (NPC). We took a genomics approach in order to gain insight into the universality and physiological relevance of the interaction between active genes and the NPC. Using synthetic genetic array (SGA) approach, we identified interactions between components of the SAGA histone acetyltransferase complex and the Mlp and Nup60 subunits of the NPC. Cells lacking these SAGA and NPC components display growth defects under optimal growth conditions, in which cells are grown on rich medium containing the preferred sugar glucose as a carbon source and incubated at their optimal temperature. That growth defects were observed under these non-stress conditions suggests that these interactions are indicative of defects in normal cell physiology. These results are consistent with a model where physical interactions between the NPC and SAGA are important for transcription of constitutively expressed genes. To test this hypothesis, we used microarray analysis to assess changes global transcript levels in the absence of Nup60, Ada2, or Nup60 and Ada2. Microarray analysis reveals that the growth defect in these double mutants is correlated with a synthetic reduction in steady-state transcript levels for numerous genes that are strongly expressed in wildtype cells. These results suggest that SAGA and Nup60 cooperate in transcriptional regulation, and are consistent with a model for global regulation of SAGA-dependent transcription at the NPC.
2013-05-13 | GSE21870 | GEO
Project description:A network governing DNA integrity was identified in yeast by a global genetic analysis of synthetic fitness or lethality defect (SFL) interactions. Within this network, multiple functional modules or mini-pathways were defined according to their common patterns of global SFL interactions and available protein-protein interaction information. Modules or genes involved in DNA replication, DNA replication checkpoint signaling, and oxidative stress response were identified as the major guardians against lethal spontaneous DNA damage, efficient repair of which requires the functions of the DNA damage checkpoint signaling and multiple DNA repair pathways. This genome-wide genetic interaction network also revealed potential roles of a number of genes and modules in mitotic DNA replication and maintenance of genomic stability. These include DIA2, NPT1, HST3, HST4, and the CSM1/LRS4 module (CSM1m). Likewise, the CTF18 module (CTF18m), previously implicated in sister chromatid cohesion, was found to participate in the DNA replication checkpoint. Keywords: dose response
2006-02-16 | GSE3574 | GEO
Project description:Parallel quantitative CRISPR interference in yeast identifies chemical-genetic interactions and new rules for guide RNA design
| PRJNA291393 | ENA