ABSTRACT: Each strain was grown overnight then diluted in fresh YPD to 10% v/v and grown for 3 hours at 30'C. Total RNA was isolated using an RNeasy mini kit, reverse transcribed, labeled with either Cy3 or Cy5, and hybridized to epoxy-coated slides with 6388, 70mer oligos (Qiagen-Operon). After an overnight hybridization, microarrays were scanned using a ScanArray Express laser scanner.
Project description:Each strain was grown overnight then diluted in fresh YPD to 10% v/v and grown for 3 hours at 30'C. Total RNA was isolated using an RNeasy mini kit, reverse transcribed, labeled with either Cy3 or Cy5, and hybridized to epoxy-coated slides with 6388, 70mer oligos (Qiagen-Operon). After an overnight hybridization, microarrays were scanned using a ScanArray Express laser scanner. Reference, a pool of total RNA from all samples, was used to contrast with each sample. Dye-swap was performed for one of the three replicates of each strain, where Cy3 instead of Cy5 was used to label the reference RNA.
Project description:Each strain was grown overnight then diluted in fresh rich media. After three hours strains were again rediluted into either rich media or rich media supplemented with copper sulfate. After another three hours cultures were sampled, cells lysed and flash frozen using liquid nitrogen. RNA was extrated using hot phenol-chloroform, reverse transcripbed using amino-allyle dUTP and labelled with either Cy3 or Cy5 flourescent dye. Each hybridization is of a single sample compared to a reference pool contructed from all the strains with the same treatment. Labelled probe were hybridized to DNA microarrays spotted with 6144 70 bp oligonucleotides obtained from Qiagen-Operon. After an overnight hybridization, microarrays were scanned using a GenePix 4000A scanner and spot intensities extracted using GenePix 4.0 software. Bad spots were flagged based on the image. Keywords: other
Project description:RNA was isolated from late-log pahse wild-type Borrelia burgdorferi B31 and the bb0647 mutant grown in BSKH media at 37 degree, 5% CO2. cDNA was synthesized, labeled and hybridized to the 70mer oligonucleotide B. burgdorferi array. Slides were scanned using axon scanner and image were analyzed using GenePix 6.0. Dta were further analysed using the professional software Acuity 4.o, based on a ratio-based normalization.
Project description:C. albicans (strain CAI4-CIp10) was grown according to CRISP SOP. An overnight culture was started from a single colony in YPD-Tris,(100mM Tris.HCl) pH 7.4 and incubated overnight at 30C in shaking incubator. The next day, 500 ul culture was inoculated into 50 ml YPD-Tris, pH 7.4. The following day a fresh culture was inoculated in YPD-Tris to an OD600 of 0.2 and grown to OD600 of 0.8 at 30C in a shaking incubator. At this point the culture was split, diluted back to OD600 of 0.2 in fresh medium and stress agents added at time =0 (XS = 5mM H2O2, OS = 1M NaCl or a combination, OSXS). After 10 min the cultures were harvested by centrifugation and cell pellets flash frozen in liquid nitrogen. Three independent cultures were grown for RNA extraction for each isolate at each condition.<br><br>The control sample was obtained from cells with no stress agents added, harvested at time=0. RNA was extracted and transcript profiling carried out by microarray analysis using custom microarrays (Eurogentec).
Project description:To examine the comparative transcription profile of WT and ALL1 mutant cells in in vitro conditions to determine genes resposible for hypervirulent phenotype of ALL1 mutant cells. Using transcriptional profiling, we determined that many genes involved in oxidation reduction processes and iron homeostasis were differentially transcribed between the wild type and the mutant strain For arrays, total RNA was isolated from WT and ALL1 mutant using Qiagen RNeasy Kit. For RNA extraction, Wt and ALL1 mutant were grown in two different culture medium conditions including minimal media and YPD broth. Cells were grown for overnight, diluted 1:100 and then again grown overnight or up to an OD of 0.6-0.7 with agitation (150rpm) at 37°C.
Project description:In this study, we constructed three isogenic strains of S96 yrr1Δ background (its native YRR1 gene was knocked out) carrying three different YRR1 alleles, YRR1_S96, YRR1_YJM789, YRR1_S96-I775E, respectively. We then conducted chromatin immuno-precipitation followed by high-throughput sequencing (ChIP-Seq) for Yrr1 protein on the three strains grown in Yeast Peptone Dextrose medium (YPD) and YPD + 4NQO.
Project description:In this study, we constructed three isogenic strains of S96 yrr1Δ background (its native YRR1 gene was knocked out) carrying three different YRR1 alleles, YRR1_S96, YRR1_YJM789 and YRR1_S96-I775E, respectively. We then conducted RNA deep sequencing (RNA-Seq) on the three strains grown in Yeast Peptone Dextrose medium (YPD), YPD + 4NQO and Yeast Peptone glycerol medium (YPglycerol).
Project description:4 pan-Neisseria arrays examining the gonococcal response to iron availability. Dual channel (Cy3/Cy5) arrays, using random nonamers for cDNA generation. Arrays scanned with ScanArray ExpressHT microarray scanner. Data analyzed using ArrayVision 7.0 and compiled in GeneSpring. Keywords: other
Project description:To undestand the mechanism involved in abitoic stress tolerance of P. Putida (NBAII-RPF 9) the bacterium was grown in liquid LB media overnight and further subjected to saline shock of (1M NaCl) for one hour seperately. The cultures were pelleted with centrifuged for total RNA. The RNA was hybridised in 8X15K Agilent array and image analysis carried out with Agilent Microarray scanner.
Project description:To undestand the mechanism involved in abitoic stress tolerance of P. Putida (NBAII-RPF 9) the bacterium was grown in liquid LB media overnight and further subjected to heat shock at 45 degrees in incubated shaker for one hour seperately. The cultures were pelleted with centrifuged for total RNA. The RNA was hybridised in 8X15K Agilent array and image analysis carried out with Agilent Microarray scanner