Investigation Title Candida glabrata oxidative stress Comment[Submitted Name] Candida glabrata oxidative stress Experimental Design dose_response_design compound_treatment_design co-expression_design in_vitro_design transcript_identification_design transcription profiling by array Experimental Design Term Source REF The MGED Ontology The MGED Ontology EFO Comment[SecondaryAccession] Comment[ArrayExpressReleaseDate] 2011-01-01 Comment[AEMIAMESCORE] 3 Comment[ArrayExpressAccession] E-MEXP-2915 Comment[MAGETAB TimeStamp_Version] 2010-09-22 14:55:34 Last Changed Rev: 13833 Experimental Factor Name COMPOUND DOSE GENOTYPE Experimental Factor Type compound dose genotype Experimental Factor Term Source REF Person Last Name Schuller Person First Name Christoph Person Mid Initials Person Email Christoph.Schueller@univie.ac.at Person Phone +43 1 4277 52815 Person Fax Person Address Department f.r Biochemie, Dr.Bohr-Gasse 9, Vienna, Vienna, A-1030, Austria Person Affiliation University and BioCenter Vienna Person Roles submitter Person Roles Term Source REF The MGED Ontology Quality Control Type dye_swap_quality_control Quality Control Term Source REF The MGED Ontology Replicate Type Replicate Term Source REF Normalization Type Normalization Term Source REF Date of Experiment Public Release Date 2011-01-01 PubMed ID Publication DOI Publication Author List Publication Title Publication Status Publication Status Term Source REF Experiment Description Investigating the oxidative stress response: Candida glabrata strains were stressed with hydrogen peroxide and menadione (causing oxygen radicals) to induce the oxidative stress regulon, which is thought to be upregulated during the oxidative burst inside of phagocytic cells. Protocol Name P-MTAB-17100 P-MTAB-17097 P-MTAB-17096 P-MTAB-17099 P-MTAB-17092 P-MTAB-17102 P-MTAB-17101 P-MTAB-17098 P-MTAB-17095 P-MTAB-17093 Protocol Type specified_biomaterial_action specified_biomaterial_action specified_biomaterial_action nucleic_acid_extraction pool grow labeling labeling hybridization bioassay_data_transformation Protocol Description Cells were grown to OD 1 and harvested. Candida glabrata cells from stationary overnight cultures were diluted in fresh YPD and grown to log phase (form OD600=0.1 to 1). Freshly prepared Menadione solution was added to a final concentration of 0.1mM. All treatments were done at 30°C for 20 minutes. Untreated and treated cells were then harvested by centrifugation at 4°C (2 minutes, 4000g). Cell pellets were washed once with ice cold water, harvested as before and immediately frozen at -20°C. Cells grown in liquid culture in early logarithmic phase (OD =1). Cultures were treated with 0.4mM H2O2 and incubation was continued at 30° for 20 minutes. Treated cells were harvested at 4° for 2 minutes at 4000g. Cell pellets were washed once with ice cold water, harvested at 4° for 2 minutes at 4000g and immediately frozen at -20°C. Cells were grown over night diluted to OD600=0.1 in fresh medium, grown to OD600 of 1 and treated as described. Cells were harvested by centrifugation and frozen immediately. For each RNA extraction 25ml of yeast cells were collected. Frozen pellets were resuspended in RNA isolation buffer (50mM Tris pH7.5 / 5mM EDTA / 5% SDS / 130mM NaCl), 200µl PCI solution (Roth) and glass beads (2/3 of total volume) were added and total RNA was extracted using FastPrep (2 x 12’’, speed 6, Thermo Savant).(Parameters: Extracted product = total_RNA, Amplification = none) RNA was hydrolysed in 50mM NaOH at 65°C for 20 minutes, the solution was neutralized with acetic acid. cDNA was purified using a GFX purification kit (GE Healthcare). Labelled cDNAs were concentrated via SpeedVac to about 5-7µl each and pooled. Candida glabrata from stationary overnight cultures were diluted in fresh YPD medium to A600 of 0.1 and grown until an A600 of 1 to 1.1 was reached. Temperature 30°, Volume 50ml, 190rpm (Parameters: time unit = seconds, temperature unit = C, media = YPD) Labeling protocol description- Labeling protocol description: Protocol from: Microarray Centre Clinical Genomics Centre University Health Network 200 Elizabeth Street MBRC 5R414 Toronto, Ontario, M5G 1L7 Reaction volume is 40 µl. Combine the following on ice: 8.0 µL 5X First Strand reaction buffer (Superscript II, Invitrogen) 1.5 µL AncT mRNA primer (5’-T20VN, 100 pmol/µl) 3.0 µL dNTP (-dCTP) (6.67 mM each of dATP, dGTP, dTTP) 1.0 µL 2 mM dCTP 1.0 µL 1 mM Cyanine 5-dCTP (NEN) 4.0 µL 0.1 M DTT 0.1 – 20 µg RNA (0.1-0.5 µg mRNA or 10-20 µg total RNA) to 40 µL dH20 Incubate the labeling reaction at 65°C for 5 minutes, then at 42°C for 5 minutes. Add 2µL of reverse transcriptase (Superscript III, Invitrogen). Incubate at 42 °C for 2 to 3 hours. Add 4 µL of 50 mM EDTA (pH 8.0), and 2 µL of 10 N NaOH. Incubate at 65°C for 20 minutes. Add 4 µL of 5M acetic acid. cDNA was purified using a GFX purification kit (GE Healthcare). Labelled cDNAs were concentrated in a speed vac to 5µl.(Parameters: Mass unit = Micro gram, Amplification = none) Labeling protocol description- Protocol from: Microarray Centre Clinical Genomics Centre University Health Network 200 Elizabeth Street MBRC 5R414 Toronto, Ontario, M5G 1L7 Reaction volume is 40 µl. Combine the following on ice: 8.0 µL 5X First Strand reaction buffer (Superscript II, Invitrogen) 1.5 µL AncT mRNA primer (5’-T20VN, 100 pmol/µl) 3.0 µL dNTP (-dCTP) (6.67 mM each of dATP, dGTP, dTTP) 1.0 µL 2 mM dCTP 1.0 µL 1 mM Cyanine 3-dCTP (NEN) 4.0 µL 0.1 M DTT 0.1 – 20 µg RNA (0.1-0.5 µg mRNA or 10-20 µg total RNA) to 40 µL dH20 Incubate the labeling reaction at 65°C for 5 minutes, then at 42°C for 5 minutes. Add 2µL of reverse transcriptase (Superscript III, Invitrogen). Incubate at 42 °C for 2 to 3 hours. Add 4 µL of 50 mM EDTA (pH 8.0), and 2 µL of 10 N NaOH. Incubate at 65°C for 20 minutes. Add 4 µL of 5M acetic acid. cDNA was purified using a GFX purification kit (GE Healthcare). Labelled cDNAs were concentrated in a speed vac to 5µl.(Parameters: Mass unit = Micro gram, Amplification = none) To each 100 µL of DIG Easy Hyb solution (Roche), add 75µg sonicated salmon sperm DNA (Sigma). Incubate the mixture at 65°C for 2 minutes and cool to room temperature. Mix the hyb solution with the labeled-cDNA, incubate at 65°C for 2 minutes, and cool to room temperature. Add Mix to Yeast-array, cover with coverslip. Incubate on a level surface in a 37 °C incubator.(Parameters: Chamber type = custom, Quantity of label target used = 20, Mass unit = Micro gram, time = 14, Tiny time unit = hours, Volume = 60, Volume unit = Micro litre, temperature = 37) Normalization protocol description: Normalization protocol description: Features containing control and dubious ORF DNA were excluded. Remaining values were log2-transformed and normalized. Colour inversion experiments were converted. Genes reported have been selected by 2 criteria: >1 present values and a CV <1 for at least one tested condition. Single values have no SD and CV. Mean value, standard deviation and coefficient of variance are included. Protocol Parameters Protocol Hardware Protocol Software Protocol Contact Protocol Term Source REF The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology The MGED Ontology SDRF File E-MEXP-2915.sdrf.txt Term Source Name The MGED Ontology ArrayExpress NCI_thesaurus The MGED Ontology EFO Term Source File http://mged.sourceforge.net/ontologies/MGEDontology.php http://www.ebi.ac.uk/arrayexpress ncithesaurus.obo.alt http://mged.sourceforge.net/ontologies/MGEDontology.php http://www.ebi.ac.uk/efo/ Term Source Version