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Changes in gene expression upon co-treatment of cells with Dex and E2

ABSTRACT: We report changes in gene expression upon co-treatment with Dex and E2 when compared to Dex or E2 treatments alone.

ORGANISM(S): Mus musculus

PROVIDER: GSE46116 | GEO | 2013/07/01

SECONDARY ACCESSION(S): PRJNA197380

REPOSITORIES: GEO

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Project description:Purpose: The goals of this study are screening the putative target genes regulated by OsNF-YA5 using DEX(dexamethason) inducible system. Methods: 10-day-old GOS2::OsNF-YA5-GR plants grown on MS solid media were treated with 50 μM dexamethasone (DEX) solution containing 0.02% (w/v) Silwet L-77. For mock treatments, 0.02% Silwet L-77 was sprayed into rice plants. To minimize the effect by the treatment, plants were pre-treated with 0.02% Silwet L-77 3 hours before DEX treatment). Total RNAs were extracted using the RNeasy plant mini kit (Qiagen, USA) according to the manufacturer’s instruction. cDNA libraries were prepared using the TruSeq RNA Sample Prep kit (v2) (Macrogen, Korea). Single-end sequences were obtained using IRGSP (v 1.0) and raw sequence reads were trimmed to remove adaptor sequence, and those with a quality lower than Q20 were removed using the Trimmomatic 0.32 software (Bolger et al., 2014). To map the reads to reference genome, all reads were assembled with annotated genes from the Rap-DB database [http://rapdb.dna.affrc.go.jp; IRGSP (v 1.0)] using TopHat software (https://ccb.jhu.edu/software/tophat/index.shtml). After mapping reads to a reference genome, differentially expressed genes (DEGs) were selected using a cut-off change of at least 2-fold change (DEX/mock) and Student’s t-test (P < 0.1). The selected DEGs were grouped by hierarchical clustering analysis (Complete Linkage). Results: RNA sequencing analysis revealed that 81 (3 hr DEX treatment) and 88 (9 hr DEX treatment) genes were up-regulated. In comparison, 61 (3 hr DEX treatment) and 45 (9 hr DEX treatment) genes were down-regulated in GOS2:OsNF-YA5-GR transgenic plants by DEX treatment compared to mock treatment. Among 161 up-regulated genes, 71 genes (44%) were also up-regulated in N starvation conditions. GO term analysis of up-regulated genes revealed that 59-76% of genes were involved in the metabolic process, and 10%-12% were transporter (Extended Data Fig. 4c). These results suggested that OsNF-YA5 regulated the genes involved in the metabolic process. Conclusions: OsNF-YA5 positively regulated the genes involved in the nitrogen metabolic process including amino acid and nitrate/peptide transporters.

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Changes in gene expression upon co-treatment of cells with Dex and E2

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