Project description:Investigation of whole genome gene expression changes at short (2 hours) and extended (24 hours) timepoints in wild-type Saccharomyces cerevisiae treated with 50 μM menadione during exponential growth compared to an rph1Δ strain Transient treatment with 50 μM menadione elevates mitochondrial ROS and extends chronological lifespan in yeast. Deletion of RPH1, a H3K36me3 histone demethylase, block chronological lifespan extension. This study aimed to identify Rph1p-dependent gene expression changes induced by menadione treatment that may support chronological lifespan extension. Reference: Bonawitz, N.D., Chatenay-Lapointe, M., Wearn, C.M., and Shadel, G.S. (2008). Expression of the rDNA-encoded mitochondrial protein Tar1p is stringently controlled and responds differentially to mitochondrial respiratory demand and dysfunction. Curr Genet 54, 83-94.
Project description:To understand the extent that Heat shock protein 90 (Hsp90) regulated its target proteins at the transcription level, transcriptomic change was profiled in yeast cells upon Hsp90 compromising. We genetically modified the R1158 strain (resulting genotype of mutant strain: TETp-HSC82 hsp82Δ arg4Δ lys5Δ car2Δ::URA3) and then reduced the Hsp90 amount with doxycycline treatment. Fold change of mRNA from untreated to treated cells indicated the transcriptomic change. Totally, we identified 1104 genes mis-regulated with a fold change of no less than 1.5 (P <0.05) upon Hsp90 compromising. Two-condition experiment, treated vs. untreated cells. Biological duplicates, independently grown and harvested. Technical triplicates for RNA isolation.
Project description:To understand the extent that Heat shock protein 90 (Hsp90) regulated its target proteins at the transcription level, transcriptomic change was profiled in yeast cells upon Hsp90 compromising. We genetically modified the R1158 strain (resulting genotype of mutant strain: TETp-HSC82 hsp82Δ arg4Δ lys5Δ car2Δ::URA3) and then reduced the Hsp90 amount with doxycycline treatment. Fold change of mRNA from untreated to treated cells indicated the transcriptomic change. Totally, we identified 1104 genes mis-regulated with a fold change of no less than 1.5 (P <0.05) upon Hsp90 compromising.
Project description:Investigation of whole genome gene expression changes at short (2 hours) and extended (24 hours) timepoints in wild-type Saccharomyces cerevisiae treated with 50 μM menadione during exponential growth compared to an rph1Δ strain Transient treatment with 50 μM menadione elevates mitochondrial ROS and extends chronological lifespan in yeast. Deletion of RPH1, a H3K36me3 histone demethylase, block chronological lifespan extension. This study aimed to identify Rph1p-dependent gene expression changes induced by menadione treatment that may support chronological lifespan extension. Reference: Bonawitz, N.D., Chatenay-Lapointe, M., Wearn, C.M., and Shadel, G.S. (2008). Expression of the rDNA-encoded mitochondrial protein Tar1p is stringently controlled and responds differentially to mitochondrial respiratory demand and dysfunction. Curr Genet 54, 83-94. A 24 chip study using total RNA recovered from two separate cultures each of Saccharomyces cerevisiae wild-type DBY2006 and rph1Δ. Each chip measures expression levels of 5,777 transcripts from NCBI build June 2008 with 8 probes per transcript and 3 replicate probe sets.
