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Gene expression profile upon TNF-a stimulation, forced expression of NICD, or TNF-a stimulation under forced expression of NICD, in human colon carcinoma-derived LS174T cells

ABSTRACT: Gene expression profile upon TNF-a stimulation, forced expression of NICD, or TNF-a stimulation under forced expression of NICD, in human colon carcinoma-derived LS174T cells

PROVIDER: PRJNA484183 | ENA |

REPOSITORIES: ENA

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Gene expression profile upon TNF-a stimulation, forced expression of NICD, or TNF-a stimulation under forced expression of NICD, in human colon carcinoma-derived LS174T cells

Project description:A human colon carcinoma-derived cell line LS174T was modified to overexpress NICD, intracellular domain of Notch1, upon doxycycline addition (designated as LS174T-tetON-NICD cells), using the T-rex system (Invitrogen). We have previously shown that these cells can overexpress NICD under the control of CMV promoter (Okamoto R et al, Am J Physiol, 296(1):G23-35, 2009), and the amont of the overexpressed NICD protein reaches to the maximal level in early as 3 hours from doxycycline addition (100ng/ml), which persists for up to 24 hours. In the present experiment, LS174T-tetON-NICD cells were treated with recombinant human TNF-a (50ng/ml) alone, doxycycline alone (100ng/ml), co-treated by both TNF-a and doxycycline, or left untreated (Control) for 24 hours, and subjected for analysis. Experiment was done using a modified sub-line of LS174T cell (LS174T-tetON-NICD cells), in which overexpression of NICD can be induced by a Doxycycline dependent manner.

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Gene expression profile upon IL-22 stimulation, forced expression of Hes1, or IL-22 stimulation under forced expression of Hes1, in human colon carcinoma-derived LS174T cells

Project description:A human colon carcinoma-derived cell line LS174T was modified to overexpress Hes1, a bHLH-type transcription factor, upon doxycycline addition (designated as LS174T-tetON-Hes1 cells), using the T-rex system (Invitrogen). We have previously shown that these cells can overexpress Hes1 under the control of CMV promoter (Zheng et al, Inflamm Bowel Dis, 17;2251-2260, 2011), and the amont of the overexpressed Hes1 protein reaches to the maximal level in early as 3 hours from doxycycline addition (100ng/ml), which persists for up to 24 hours. In the present experiment, LS174T-tetON-Hes1 cells were treated with recombinant human IL-22 (20ng/ml) alone, doxycycline alone (100ng/ml), co-treated by both IL-22 and doxycycline, or left untreated (Control) for 24 hours, and subjected for analysis. Experiment was done using a modified sub-line of LS174T cell (LS174T-tetON-Hes1 cells), in which overexpression of Hes1 can be induced by a Doxycycline dependent manner. Four-condition experiment, Control vs. IL-22 stimulation, Control vs Doxycycline addition (Hes1 overexpression) and Control vs IL22 stimulation+Doxycycline addition (Hes1 overexpression). Biological replicates: One for each condition, independently grown and harvested. One replicate per array.

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Expression analysis of KHR and KHR-NICD oral tumors

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Expression analysis of KHR and KHR-NICD oral tumors

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