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Investigation of gene expression of Pseudomonas putida (NBAII RPF 9) under abiotic stress [salt]

ABSTRACT: 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.

ORGANISM(S): Pseudomonas putida

PROVIDER: GSE103283 | GEO | 2017/08/31

SECONDARY ACCESSION(S): PRJNA401907

REPOSITORIES: GEO

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Project description:RPF-1, a transcription factors encoded by POU6F2 gene, appears to be expressed in the developing nervous system and embryonic kidney. We generated a stable HEK/RPF-1 transfectant expressing the protein in a tetracycline (Tet)-dependent induction and addressed the whole transcriptome regulated by RPF-1. We detected a gross alteration of gene expression that is consistent with its occupancy at proximal promoters, and gel retardation assay and promoter-reporter activity, addressing a few target genes, indicated a dependence by RPF-1 of transcriptional response. GO analysis supports a role for this factor in the genetic programs guiding early differentiation of embryonic kidney and neuronal fate. RPF-1, a transcription factors encoded by POU6F2 gene, appears to be expressed in the developing nervous system and embryonic kidney. We generated a stable HEK/RPF-1 transfectant expressing the protein in a tetracycline (Tet)-dependent induction and addressed the whole transcriptome regulated by RPF-1. We detected a gross alteration of gene expression that is consistent with its occupancy at proximal promoters, and gel retardation assay and promoter-reporter activity, addressing a few target genes, indicated a dependence by RPF-1 of transcriptional response. GO analysis supports a role for this factor in the genetic programs guiding early differentiation of embryonic kidney and neuronal fate. Gene array analysis shows that RPF-1 transcription factor modify the transcriptome of HEK293 cells by regulating a genetic program endowed with developmental programs Comparison of HEK293 cells induced for RPF-1 expression (Tet-) over uninduced control (Tet+) and Mock cells. RPF-1 cDNA was inserted into the pTRE2puro vector to generate stable Tet-inducible KEK293 transfectants. Upon Tet removal from the medium, HEK/RPF-1 transfectants expressed the transcription factor RPF-1. Cells were then seeded in 10 cm dishes, cultured for 48 h either in complete medium supplemented with Tet (+) or in Tet-depleted medium (-), harvested, and spun down before RNA isolation. Comparative analysis between HEK/RPF-1 induced (Tet-) and uninduced (Tet+) transfectants allowed us to identify genes transcriptionally regulated by RPF-1. Residual effects on gene expression due to Tet supplementation into culture media was ruled out by comparison with the Mock transfectant.

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Investigation of gene expression of Pseudomonas putida (NBAII RPF 9) under abiotic stress [salt]

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