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NP-18 vs. NP-18AR transcriptional profile upon treatment with TK/GCV

ABSTRACT: Pancreatic cancer-derived cells NP-18 underwent four rounds of treatment with increasing doses of an adenoviral vector encoding TK enzyme and GCV. Surviving cells were termed NP-18AR and displayed decreased sensitivity to treatment. This experiment analyses the transcriptomic effect of TK/GCV treatment on NP-18AR as compared to that of NP-18 cells.

ORGANISM(S): Homo sapiens

PROVIDER: GSE17137 | GEO | 2010/07/16

SECONDARY ACCESSION(S): PRJNA119817

REPOSITORIES: GEO

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NP-18 vs. NP-18AR transcriptional profile upon treatment with TK/GCV

Project description:Pancreatic cancer-derived cells NP-18 underwent four rounds of treatment with increasing doses of an adenoviral vector encoding TK enzyme and GCV. Surviving cells were termed NP-18AR and displayed decreased sensitivity to treatment. This experiment analyses the transcriptomic effect of TK/GCV treatment on NP-18AR as compared to that of NP-18 cells. Two-condition experiment, where response to treatment in naïve cells (NP-18) was compared to response to treatment in previously treated resistant cells (NP-18AR). Biological replicates: samples from 3 independently generated and independently treated NP-18AR lines (NP-18AR1, NP-18AR2 and NP-18AR3) were hibridized with 3 independently treated samples of NP-18 cells. A total of 9 hybridizations were performed, 2 for NP-18AR1 (including 1 dye-swap), 4 for NP-18AR2 (including 2 dye swaps) and 3 for NP-18AR3 (including 1 dye-swap).

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Quantitative proteomic analysis of gastric cancer cells treated by bifidobacterium infantis-mediated herpes simplex virus-TK/ganciclovir.

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Homo sapiens

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Methylome analysis of 18 wild-type and mutant mouse ES, NP and MEF cells

Project description:The analysis of the 18 methylomes comprise 3 biological replicates of TDG+/- ES cells, 3 biological replicates of TDG-/- ES cells, 3 biological replicates of TDG+/- NP cells, 3 biological replicates of TDG-/- NP cells, 3 biological replicates of TDG+/+ MEF cells and 3 biological replicates of TDG-/- MEF cells.

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Project description:Tachykinins (TKs) and their receptors have been shown to be expressed in the mammalian ovary. However, the biological roles for ovarian TKs have yet to be verified. Ci-TK and Ci-TK-R, characterized from the protochordate (ascidian), Ciona intestinalis, are prototypes of vertebrate TKs and their receptors. In the present study, we show a novel biological function of TKs as an inducible factor for oocyte growth using C. intestinalis as a model animal. Immunostaining demonstrated the specific expression of Ci-TK-R in test cells residing in oocytes at the vitellogenic stage. DNA microarray and real-time PCR substantiated that Ci-TK induced gene expression of several proteases including cathepsin D, chymotrypsin, and carboxypeptidase B2 and functionally unidentified lectins or glycosidases in the ovary. The enzymatic activities of the above proteases in the ovary were also shown to be enhanced by Ci-TK. Of particular significance is that treatment of Ciona oocytes with Ci-TK resulted in progression of growth from the vitellogenic stage to the post-vitellogenic stage, which was completely blocked by a TK antagonist or protease inhibitors. These results led to the conclusion that Ci-TK enhances growth of the vitellogenic oocytes via up-regulation of gene expression and enzymatic activities of the proteases. Keywords: tachykinins, ovary

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