RNA-Seq of FEX1, FEX2 deleted S. cerevisiae (yeast) treated with sodium fluoride against untreated control
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB33061 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR3376917_1.fastq.gz | Fastqsanger.gz | |||
| ERR3376917_2.fastq.gz | Fastqsanger.gz | |||
| ERR3376918_1.fastq.gz | Fastqsanger.gz | |||
| ERR3376918_2.fastq.gz | Fastqsanger.gz |
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Project description:Fluoride is a highly abundant, naturally occurring toxicant that causes oxidative stress, cell cycle arrest, and apoptosis at high concentrations. Our lab has created a fluoride-sensitized yeast model lacking fluoride exporters, FEX1 and FEX2. These yeast undergo cell cycle arrest and apoptosis at over 1000-fold less fluoride concentration than in wild type, and oxidative stress within four hours. To determine the mechanism by which fluoride triggers oxidative stress, we grew cells in 25 mL YPD media at starting O.D. 0.1 in +/- 50 uM NaF. After four hours, the cells were washed twice with sterile water, and RNA was harvested and treated with DNAse. RNA was then sent to the the Yale Center for Genome Analysis for quality analysis with a Bioanalyzer and subsequent poly-A sequencing.
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Project description:Although an appropriate range of fluoride is thought to be safe and effective, excessive fluoride intake results in toxic effects in either hard tissues of teeth and skeleton or soft tissues of kidney, lung and brain. It is also well known that fluoride at a millimolar range elicits the complex cellular responses such as enzyme activity, signal transduction and apoptosis in many kinds of cells. However, its toxic effects are still unclear. In this study, to identify genes involved in cell death induced by sodium fluoride (NaF) in rat oral epithelial ROE2 cells, global-scale gene expression analysis was carried out using a GeneChip® system.
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Project description:Fluorosis is caused due to excess of fluoride intake over a long period of time. Aberrant change in RUNX2-mediated signaling cascade is one of the decisive steps during the pathogenesis of fluorosis. Till date, role of fluoride on the epigenetic alterations is not studied. In the present study, global expression profiling ofshort non-coding RNAs, in particular miRNAs and snoRNAs was carried out in NaF treated HOS cells to understand their possible role in the development of fluorosis. RT-PCR and insilico hybridization revealed that miR-124 and miR-155 can be directly involved in the transcriptional regulation of RUNX2 and RANKL genes. Compare to control, C/D box analysis revealed mark elevation in the number of UG dinucleotides and D-box sequences in NaF exposed HOS cells. Herein, we report miR-124 and miR-155 as the new possible players involved in the development of fluorosis. We also state that the alterations in UG dinucleotides and D-box sequences of snoRNAs could be due to NaF exposure. HOS cells grown on MEM media were treated with sodium fluoride and total RNA was isolated from cells after one month of chronic exposure; Cells grown on six 25mm flask. two replicates of control and two different concentration of exposed samples; two replicate are served as control
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Project description:Although an appropriate range of fluoride is thought to be safe and effective, excessive fluoride intake results in toxic effects in either hard tissues of teeth and skeleton or soft tissues of kidney, lung and brain. It is also well known that fluoride at a millimolar range elicits the complex cellular responses such as enzyme activity, signal transduction and apoptosis in many kinds of cells. However, its toxic effects are still unclear. In this study, to identify genes involved in apoptosis induced by sodium fluoride (NaF) in rat oral epithelial ROE2 cells, global-scale gene expression analysis was carried out using a GeneChipM-BM-. system. NaF (2 mM) significantly induced apoptosis accompaning chromatin condensation and caspase-3 activation. Total RNA samples were prepared from the NaF-treated cells, and quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was monitored by an Affymetrix GeneChipM-BM-. system with a Rat Genome 230 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturerM-bM-^@M-^Ys instructions.
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