Identification of calcineurin-dependent, Crz1-independent gene expression changes in response to chronic KCl stress
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ABSTRACT:
ORGANISM(S): Saccharomyces cerevisiae
PROVIDER: GSE254554 | GEO | 2024/03/19
REPOSITORIES: GEO
Similar Datasets
Project description:Gene expression was quantified in S. cerevisae cells over a time course of three days of CaCl2 treatment to activate calcineurin. crz1 and crz1 cnb1 mutant strains were compared to allow the identification of calcineurin-dependent gene expression changes that are independent of the downstream transcription factor Crz1. We show that mitochondrial genes are downregulated in both geneotypes over time. Additionally, genes that promote glutathione biosynthesis are upregulated in cells that express calcineurin.
2024-03-19 | GSE254552 | GEO
Project description:Gene expression was quantified in crz1 hog1 delete S. cerevisae cells over a time course following calcineurin activation by CaCl2. Cells were pretreated with buffer or the calcineurin inhibitor FK506 to allow the identification of calcineurin-regulated genes. We show that calcineurin-dependent downregulation of G1/S genes is partly dependent on the osmostress-activated kinase Hog1.
2020-01-14 | GSE115014 | GEO
Project description:Gene expression was quantified in S. cerevisae cells over a time course of three days of CaCl2 treatment to activate calcineurin. Wild type (WT) and cnb1 mutant strains were compared to allow the identification of calcineurin-dependent gene expression changes. We show that mitochondrial genes are downregulated, and ribosome biogenesis genes are upregulated, in both geneotypes over time.
2024-03-19 | GSE254551 | GEO
Project description:Gene expression was quantified in crz1 delete S. cerevisae cells over a time course following calcineurin activation by CaCl2. Cells were pretreated with buffer or the calcineurin inhibitor FK506 to allow the identification of calcineurin-regulated genes. A strain with a calcineurin-resistant mutation in the transcription factor Hcm1 was also examined. We show that calcineurin activation leads to downregulation of a many clusters of cell cycle-regulated genes, including those expressed at the G1/S and G2/M transitions.
2020-01-14 | GSE115013 | GEO
Project description:Calcineurin is a highly conserved Ca2+/calmodulin-dependent serine/threonine-specific protein phosphatase that orchestrates cellular Ca2+ signaling responses. In Cryptococcus neoformans, calcineurin is activated by multiple stresses including high temperature, and is essential for stress adaptation and virulence. The transcription factor Crz1 is a major calcineurin effector in Saccharomyces cerevisiae and other fungi. Calcineurin dephosphorylates Crz1, thereby enabling Crz1 nuclear translocation and transcription of target genes. Here we show that Crz1 is dephosphorylated by calcineurin, and crz1Δ mutants display phenotypes intermediate between wild-type and calcineurin mutants. RNA-sequencing revealed 102 genes that are regulated in a calcineurin/Crz1-dependent manner at 37°C. 99 genes were down-regulated in cna1Δ and crz1Δ mutants, indicating these genes are normally activated by the calcineurin/Crz1 pathway at high temperature. About 58% of calcineurin-Crz1 target genes have unknown functions, while genes with known or predicted functions are involved in cell wall remodeling, calcium transport, and pheromone production. Surprisingly, only five genes have orthologs known to be calcineurin/Crz1-dependent in S. cerevisiae. 393 genes are independently regulated by calcineurin, and Crz1 regulates 59 genes independently of calcineurin. Taken together, these results indicate that the calcineurin/Crz1-dependent pathway controls a transcriptional circuit that has been extensively rewired in C. neoformans compared to S. cerevisiae. Given the intermediate crz1Δ mutant phenotype, and our recent evidence for a calcineurin regulatory network impacting mRNA in P-bodies and stress granules independently of Crz1, calcineurin likely acts on factors beyond Crz1 that govern mRNA expression/stability to operate a branched transcriptional/post-transcriptional stress response network necessary for fungal virulence. Taken together, our findings reveal the core calcineurin-Crz1 stress response cascade is maintained from ascomycetes to a pathogenic basidiomycete fungus, but its output has been extensively rewired to promote fungal virulence.
2017-04-07 | GSE93005 | GEO
Project description:The Ca2+/calcineurin signaling pathway is a central conduit regulating growth, development, and virulence of fungal pathogens infecting plants and human. We have analyzed global gene expression profiles during Ca2+ treatment in the rice blast fungus, Magnaporthe oryzae. An immunosuppressive drug, FK506, and the knock-out mutant of a transcription factor, MoCRZ1, were included to analyze calcineurin- and/or CRZ1-dependent gene expression, respectively. About 1,400 genes were up or down regulated by Ca2+ treatment, while about 200 genes seemed to be up-regulated in a calcineurin/CRZ1-dependent manner.
2010-09-17 | GSE18185 | GEO
Project description:In order to identify calcineurin pathway-regulated genes, we compared the genome-wide expression profile of wild-type with FK506-treated wild-type, cna1, and crz1 mutants. We expect that FK506-treated wild-type will have similar expression profile with that of the cna1 mutant. In response to calcineurin inhibitor FK506, the up- and down-regulated by FK506 were 113 and 87 genes, respectively (cutoff q < 0.001). The genes regulated by FK506 are largely overlapped (90%, 180/200) with those of cna1 mutant. Interestingly, FK506 induced 20 distinct genes other than that of the cna1 mutant. These genes encode proteins involved in plasma membrane ATP-bindding cassette (ABC) multidrug transporters (PDR15, PDR5, and YOR1), amino acid transporters (ALP1 and YBT1), and transcription factors (CUP2 and INO2). We also identified 34 genes regulated by calcineurin and Crz1. These genes encode proteins involved in cell wall biosynthesis (YPS5, YPS1, YSR3, YPC1, PIR1, HOR7, and NTE1), heat shock protein responses (SBA1 and GRE2), regulator of calcineurin (RCN2), and other functions.
2011-09-01 | GSE31167 | GEO
Project description:The Ca2+/calcineurin signaling pathway is a central conduit regulating growth, development, and virulence of fungal pathogens infecting plants and human. We have analyzed global gene expression profiles during Ca2+ treatment in the rice blast fungus, Magnaporthe oryzae. An immunosuppressive drug, FK506, and the knock-out mutant of a transcription factor, MoCRZ1, were included to analyze calcineurin- and/or CRZ1-dependent gene expression, respectively. About 1,400 genes were up or down regulated by Ca2+ treatment, while about 200 genes seemed to be up-regulated in a calcineurin/CRZ1-dependent manner. This study analyzes global gene expression dynamics during Ca2+ treatment in the rice blast fungus. We have used Agilent M. grisea 2.0 4×44K Microarrays using a single channel hybridization design. An immunosuppressive drug, FK506, and the knock out mutant of a transcription factor, MoCRZ1, were included to analyze calcineurin- and/or CRZ1-dependent gene expression, respectively. To know the time point at which the gene expression fluctuates most significantly, we treated mycelia with CaCl2 for 0, 15, 30, and 60 min. PMC1 expression level was checked by RT-PCR with the highest expression at 30 min time point. Four biological replicates of wild type and mutant mycelia were harvested after 30 min treatment with chemicals. Pairwise comparisons between Ca2+ treated vs. control and Ca2+ vs. Ca2+/FK506 in wild type (WT), and Ca2+ treated in WT vs. in mutant were conducted.
2010-09-17 | E-GEOD-18185 | biostudies-arrayexpress
Project description:In order to identify calcineurin pathway-regulated genes, we compared the genome-wide expression profile of wild-type with FK506-treated wild-type, cna1, and crz1 mutants. We expect that FK506-treated wild-type will have similar expression profile with that of the cna1 mutant. In response to calcineurin inhibitor FK506, the up- and down-regulated by FK506 were 113 and 87 genes, respectively (cutoff q < 0.001). The genes regulated by FK506 are largely overlapped (90%, 180/200) with those of cna1 mutant. Interestingly, FK506 induced 20 distinct genes other than that of the cna1 mutant. These genes encode proteins involved in plasma membrane ATP-bindding cassette (ABC) multidrug transporters (PDR15, PDR5, and YOR1), amino acid transporters (ALP1 and YBT1), and transcription factors (CUP2 and INO2). We also identified 34 genes regulated by calcineurin and Crz1. These genes encode proteins involved in cell wall biosynthesis (YPS5, YPS1, YSR3, YPC1, PIR1, HOR7, and NTE1), heat shock protein responses (SBA1 and GRE2), regulator of calcineurin (RCN2), and other functions. 5 sample wheel hybridization design with dye swaps totaling 10 arrays replicated 2 times to include an additional set of biological replicates. 20 arrays total.
2011-08-31 | E-GEOD-31167 | biostudies-arrayexpress
Project description:Exposure of the budding Saccharomyces cerevisiae to an alkaline environment produces a robust transcriptional response involving hundreds of genes. Part of this response is triggered by an almost immediate burst of calcium that activates the Ser/Thr protein phosphatase calcineurin. Activated calcineurin dephosphorylates the transcription factor Crz1, which moves to the nucleus and binds to calcineurin/Crz1 responsive gene promoters. In this work we present a genome-wide study of the binding of Crz1 to gene promoters in response to high pH stress. Environmental alkalinization promoted a time-dependent recruitment of Crz1 to 152 intergenic regions, the vast majority between 1 to 5 min upon stress onset. Positional evaluation of the genomic coordinates combined with existing transcriptional studies allowed identifying 139 genes likely responsive to Crz1 regulation. Gene Ontology analysis confirmed the relevant impact of calcineurin/Crz1 on a set of genes involved in glucose utilization, and uncovered novel targets, such as genes responsible for trehalose metabolism. We also identified over a dozen of genes encoding transcription factors that are likely under the control of Crz1, suggesting a possible mechanism for amplification of the signal at the transcription level. Further analysis of the binding sites allowed refining the consensus sequence for Crz1 binding to gene promoters and the effect of chromatin accessibility in the timing of Crz1 recruitment to promoters. The present work defines at the genomic-wide level the kinetics of binding of Crz1 to gene promoters in response to alkaline stress, confirms diverse previously known Crz1 targets and identifies many putative novel ones. Because the relevance of calcineurin/Crz1 in signaling diverse stress conditions, our data will contribute to understand the transcriptional response in other circumstances that also involves calcium signaling, such as exposition to sexual pheromones or saline stress.
2016-06-27 | GSE79342 | GEO