Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Tobacco By2 cells early response to Nacl treatment

ABSTRACT: Time-course analysis of gene expression changes in tobacco By2 cells in response to 250 mM Nacl after 30 min or 90 min treatment, measured with heterologus TOM1 (tomato) cDNA microarrays

ORGANISM(S): Nicotiana tabacum

SUBMITTER: Agnieszka Zmienko

PROVIDER: E-MEXP-3939 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Bone marrow (BM) cells derived from femurs of C57BL/6 mice were used to generate BM-DCs. For this, BM cells (2x106 cells/10 ml) were seeded on 100 mm2 bacterial dishes (Greiner bio-one, Frickenhausen, Germany). DC culture media (IMDM, 5% [v/v] FCS [PAA, Coelbe, Germany], 100 U/ml penicillin, 100 ug/ml streptomycin [both Gibco, Paisly, UK], 50 uM beta-mercaptoethanol [Roth, Karlsruhe, Germany] 5% [v/v] of murine GM-CSF containing cell culture supernatant was replenished on days 3 and 6 of culture. Aliquots of DC cultures were treated with recombinant human 100 ng/ml WNT-1 (Biovision, Milpitas, CA) for 48h on days 7 or 8 of culture. Each 20 ug of total RNA derived from unstimulated BM-DCs treated for 48 h with WNT-1 (100 ng/ml) or left untreated was used for generation of fluorescecne-labeled cDNA probes (Alexa Fluor 555-aha-dUTP for untreated BM-DCs; Alexa Fluor 647-aha-dUTP for WNT-treated BM-DCs). <br><br><br><br>Prehybridized (5X SSPE,0.1% SDS, and 1% BSA) microarrays (Mouse Whole Genome OneArray Microarray v2; Phalanx Biotech, San Diego, U.S.A.) were hybridized with each 20 pmol of either fluorescence-labeled cDNA probe using OneArray Hybridization Buffer with 18% formamide for 16 h (Lucidea SlidePro Hybridizer; GE Healthcare, Munich, Germany) according to the OneArray hybridization protocol. Washed microarrays were analysed using a ScanArray 4000 system equipped with ScanArray 4.0 software (both Perkin-Elmer; Rodgau-Jugesheim, Germany) at 10 pixel size. Laser intensity (90-100%) and photomultiplier tube sensitivity (60-70%) were varied to optimize signal to background ratios. Derived images weere analyzed using the ScanArray 4.0 easyquant software module. Intensity data were normalized (loess normalization; MIDAS-2.19) and subjected to significance analysis (MEV 4.3) using appropriate modules of the TM4 microarray software suite. Changes in gene expression with p < 5% were used for subsequent analyses. Gene ontology annotations were performed with Panther software (Thomas et al., 2003).

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Tobacco By2 cells early response to Nacl treatment

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