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Nucleosome occupancy in yeast BY4741and a strain lacking MSN2 and MSN4 responding to 20 min treatment with 0.4mM H2O2

ABSTRACT: Numerous factors have been implicated in regulating gene expression changes, including changes to nucleosome occupancy. Here we followed dynamic changes to nucleosome occupancy, gene expression and DNA binding of the transcription factor Msn2p genome-wide in yeast cells responding to hydrogen peroxide and reveal new relationships between regulators of stress-dependent gene expression in yeast.

ORGANISM(S): Saccharomyces cerevisiae S288C Saccharomyces cerevisiae

PROVIDER: GSE30897 | GEO | 2012/06/18

SECONDARY ACCESSION(S): PRJNA154577

REPOSITORIES: GEO

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Nucleosome occupancy in yeast BY4741and a strain lacking MSN2 and MSN4 responding to 20 min treatment with 0.4mM H2O2

Project description:Numerous factors have been implicated in regulating gene expression changes, including changes to nucleosome occupancy. Here we followed dynamic changes to nucleosome occupancy, gene expression and DNA binding of the transcription factor Msn2p genome-wide in yeast cells responding to hydrogen peroxide and reveal new relationships between regulators of stress-dependent gene expression in yeast. Nucleosome occupancy was measured in the S288c derivative BY4741 and a strain lacking MSN2 and MSN4. Nucleosomes were isolated from unstressed yeast and yeast treated for 20 min with 0.4mM H2O2. Nucleosomal samples were compared in a 2-color, competitive hybridization to sheared genomic DNA.

2012-06-17 | E-GEOD-30897 | biostudies-arrayexpress

Gene expression dynamics in yeast BY4741 and a strain lacking MSN2 and MSN4 responding to 0.4mM H2O2 over time (0-60min)

2012-06-18 | GSE30899 | GEO

Msn2p occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min)

2012-06-18 | GSE30898 | GEO

Msn2p occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min)

Project description:Numerous factors have been implicated in regulating gene expression changes, including changes to nucleosome occupancy. Here we followed dynamic changes to nucleosome occupancy, gene expression and DNA binding of the transcription factor Msn2p genome-wide in yeast cells responding to hydrogen peroxide. and reveal new relationships between regulators of stress-dependent gene expression in yeast. Msn2p occupancy was measured in response to 0.4mM H2O2 in the S288c derivative BY4741 with an integrated myc-tagged Msn2p. A single replicate of the time course was performed with time points at 0, 4, 12, 20, 40 and 60 minutes after treatment.

2012-06-17 | E-GEOD-30898 | biostudies-arrayexpress

Nucleosome occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min)

2012-06-18 | GSE30900 | GEO

Gene expression dynamics in yeast BY4741 and a strain lacking MSN2 and MSN4 responding to 0.4mM H2O2 over time (0-60min)

Project description:Numerous factors have been implicated in regulating gene expression changes, including changes to nucleosome occupancy. Here we followed dynamic changes to nucleosome occupancy, gene expression and DNA binding of the transcription factor Msn2p genome-wide in yeast cells responding to hydrogen peroxide and reveal new relationships between regulators of stress-dependent gene expression in yeast. Gene expression was measured in response to 0.4mM H2O2 in the S288c derivative BY4741 in wild-type cells and cells lacking MSN2 and MSN4. A single replicate of a time course spanning from 4 to 60 minutes after treatment in each cell type. An additional 3 repliactes were collected from cells 30 minutes after treatment.

2012-06-17 | E-GEOD-30899 | biostudies-arrayexpress

Nucleosome occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min)

Project description:Numerous factors have been implicated in regulating gene expression changes, including changes to nucleosome occupancy. Here we followed dynamic changes to nucleosome occupancy, gene expression and DNA binding of the transcription factor Msn2p genome-wide in yeast cells responding to hydrogen peroxide to reveal new relationships between regulators of stress-dependent gene expression. Nucleosome occupancy was measured by MNase-Seq in response to .4mM H2O2 in the S288c yeast derivative BY4741. A single replicate was performed for the time-course experiment with time points at 0, 4, 12, 20, 40 and 60 minutes after treatment.

2012-06-18 | E-GEOD-30900 | biostudies-arrayexpress

Dynamic changes to nucleosome occupancy and genomic expression in yeast responding to oxidative stress

Project description:This SuperSeries is composed of the following subset Series: GSE30897: Nucleosome occupancy in yeast BY4741and a strain lacking MSN2 and MSN4 responding to 20 min treatment with 0.4mM H2O2 GSE30898: Msn2p occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min) GSE30899: Gene expression dynamics in yeast BY4741 and a strain lacking MSN2 and MSN4 responding to 0.4mM H2O2 over time (0-60min) GSE30900: Nucleosome occupancy dynamics in yeast BY4741 responding to 0.4mM H2O2 over time (0-60 min) Refer to individual Series

2012-06-17 | E-GEOD-30901 | biostudies-arrayexpress

Dynamic changes to nucleosome occupancy and genomic expression in yeast responding to oxidative stress

Project description:Dynamic changes to nucleosome occupancy and genomic expression in yeast responding to oxidative stress

| PRJNA144239 | ENA

MSN2 and MSN4 link calorie restriction and TOR to sirtuin-mediated lifespan extension in Saccharomyces cerevisiae.

Project description:Calorie restriction (CR) robustly extends the lifespan of numerous species. In the yeast Saccharomyces cerevisiae, CR has been proposed to extend lifespan by boosting the activity of sirtuin deacetylases, thereby suppressing the formation of toxic repetitive ribosomal DNA (rDNA) circles. An alternative theory is that CR works by suppressing the TOR (target of rapamycin) signaling pathway, which extends lifespan via mechanisms that are unknown but thought to be independent of sirtuins. Here we show that TOR inhibition extends lifespan by the same mechanism as CR: by increasing Sir2p activity and stabilizing the rDNA locus. Further, we show that rDNA stabilization and lifespan extension by both CR and TOR signaling is due to the relocalization of the transcription factors Msn2p and Msn4p from the cytoplasm to the nucleus, where they increase expression of the nicotinamidase gene PNC1. These findings suggest that TOR and sirtuins may be part of the same longevity pathway in higher organisms, and that they may promote genomic stability during aging.

| S-EPMC1994990 | biostudies-literature

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