Comment[ArrayExpressAccession] E-MTAB-1816 MAGE-TAB Version 1.1 Investigation Title MAZR and mast cells Comment[Submitted Name] MAZR and mast cells Experiment Description Mast cells are known to be the key players in type I hypersensitivity reactions in humans and mice. They are critically involved in the development of allergic rhinitis, allergic asthma and systemic anaphylaxis. In this study we investigated the role of the transcriptional regulator MAZR in mast cells by comparing the expression profile of mast cells generated from wild-type (MazrF/F) and MAZR-deficient (MazrF/F x Vav-iCre) bone marrow cells. Our results from the array data demonstrate that MAZR acts preferentially as a transcriptional repressor in mast cells. Experimental Design development or differentiation design in_vitro_design co-expression_design genotype design Comment[AEExperimentType] transcription profiling by array Comment[AEExperimentDisplayName] Transcription profiling by array of mast cells generated from Mus musculus wild-type (MazrF/F) and MAZR-deficient (MazrF/F x Vav-iCre) bone marrow cells Experimental Factor Name genotype treatment Experimental Factor Type genotype treatment Quality Control Type biological replicate Quality Control Term Source REF EFO Public Release Date 2013-10-18 Person Last Name Ellmeier Person First Name Wilfried Person Mid Initials Person Email wilfried.ellmeier@meduniwien.ac.at Person Phone Person Address Latarettgasse 19, 1090 Vienna, Austria Person Affiliation Medical University of Vienna, Center for Pathophysiology, Infectiology and Immunology, Institute of Immunology Person Roles submitter PubMed ID Publication Author List Anastasia Abramova, Shinya Sakaguchi, Alexandra Schebesta, Hammad Hassan, Nicole Boucheron, Peter Valent, Axel Roers, Wilfried Ellmeier Publication Title The Transcription Factor MAZR Preferentially Acts as a Transcriptional Repressor in Mast Cells and Plays a Minor Role in the Regulation of Effector Functions in Response to FcεRI Stimulation Publication Status in preparation Protocol Name P-MTAB-34136 P-MTAB-34137 P-MTAB-34138 P-MTAB-34139 P-MTAB-34140 P-MTAB-34141 Protocol Type growth protocol treatment protocol nucleic acid extraction protocol nucleic acid labeling protocol nucleic acid hybridization to array protocol array scanning protocol Protocol Description Bone marrow cells were cultured at a concentration of 0.5x106/ml in medium [RPMI (Sigma), 10% heat-inactivated FBS (PAA), 5uM B-mercaptoethanol (Gibco), penicillin/streptomycin (Gibco), 2 mM Glutamin (Gibco)] supplemented with 5 ng/ml of recombinant murine IL-3 (Peprotech, UK). Once per week, in the course of 4-5 weeks, cells were spun down, counted and re-seeded at the density of 0.5x106/ml. The purity of the BMMC population was monitored by FACS and cells were only used for assays if the c-kit+Fc_RI+ mature BMMC constituted >95% of the total cultured cells. Priming and activation of mast cells: Mature BMMC (>95% c-kit+Fc_RI+) were primed (sensitized) in the following way: cells were spun down, counted and re-suspended at the concentration of 1x106/ml in full mast cell medium containing 1ug/ml of anti-TNP IgE mAb (#557079, BD Pharmingen) overnight. 6 well plates were coated overnight at 4C with 5 ml of 500 ng/ml of TNP-BSA in PBS, or just PBS for non-activated samples. TNP-BSA-coated plates were washed 3x in PBS, then blocked for 2 hours in 3% detoxified BSA at RT followed by 3 more washes in PBS. IgE-primed BMMCs (20x106 in 5 ml medium) were incubated on PBS or TNP-BSA coated plates for 4 hours at 37C incubator. For non-activated conditions we generated 3 (WT) and 4 (KO) independent biological replicas. For activated conditions we generated 4 (WT) and 3 (KO) independent biological replicas. RNA was isolated from IgE-primed or activated mast cells using 1 ml Triazol. Agilents Low Input Quick Amp Labeling Kit (Cy3) The amplified cyanine 3-labeled cRNA samples were then purified using Promegas SV Total RNA Isolation System and hybridized to Agilent Whole Mouse Genome Microarrays, 8x60K according to the standard protocol of the manufacturer. Microarray slides were washed and scanned with an Agilent Scanner, according to the standard protocol of the manufacturer. Protocol Term Source REF EFO EFO EFO EFO EFO EFO Term Source Name EFO Term Source File http://www.ebi.ac.uk/efo SDRF File E-MTAB-1816.sdrf.txt Publication DOI 10.1371/journal.pone.0077677