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Effects of S100A8 inhalation on expression of genes in the lung microenvironment

ABSTRACT: Effects of S100A8 inhalation on expression of genes in the lung microenvironment

PROVIDER: PRJNA788521 | ENA |

REPOSITORIES: ENA

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Effects of S100A8 inhalation on expression of genes in the lung microenvironment

Project description:Because S100A8 inhalation delayed lung tumor growth (LLC) in mice but did not directly affect tumor cell viability, we sought to determine potential changes in the lung microenviornment that contributed to its anti-tumor effects. Effects of S100A8 treatment on the lung microenvironment were assessed using a panel of 98 genes that affect immune regulation, redox, cancer growth, metastasis, hypoxia and angiogenesis.

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Real-time quantitative PCR analysis of mice lung tissue after inhalation of S100A8

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Project description:Recombinant-murine S100A8 were used at 10 mg/50 ml in Hanks Balanced Salt solution (HBSS) or control HBSS administered onto the nares of BALB/C mice. To assess direct effects, mice were sacrificed 1, 4, 6, or 12 h post-inhalation of S100A8. Because S100A8 is reported to initiate proinflammatory responses by ligating TLR4 and/or RAGE, a quantitative PCR array was developed to analyze 49 genes, selected to reflect potential acute inflammatory changes induced by ligation of these receptors. Expression of inflammatory genes was evaluated with the RT-qPCR array. Relative quantities of mRNA in duplicate samples were obtained using the LightCyclerÂ® 480 Software 1.5 and the Efficiency-Method.

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Real-time quantitative PCR analysis of mice lung tissue after inhalation of S100A8, S100A8 dimer, S100A9 or S100A8/A9 complex in acute lung [S100A8S100A9 LPS induced ALI]

Project description:LPS (10 μg/50 μl PBS; E. coli Serotype 055:B5, Sigma-Aldrich) was administered onto the nares. Baseline levels of genes in mice treated with vehicle (Hanks Balanced Salt solution (HBSS) and PBS), Intranasal S100s (10 μg/50 μl HBSS) were given 2 h before LPS; control mice received equal volumes of PBS and HBSS. Mice were sacrificed 4 h post LPS inhalation.

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Real-time quantitative PCR analysis of mice lung tissue after inhalation of S100A8, S100A8 dimer, S100A9 or S100A8/A9 complex in acute lung [S100A8S100A9 LPS induced ALI]

Project description:LPS (10 Î¼g/50 Î¼l PBS; E. coli Serotype 055:B5, Sigma-Aldrich) was administered onto the nares. Baseline levels of genes in mice treated with vehicle (Hanks Balanced Salt solution (HBSS) and PBS), Intranasal S100s (10 Î¼g/50 Î¼l HBSS) were given 2 h before LPS; control mice received equal volumes of PBS and HBSS. Mice were sacrificed 4 h post LPS inhalation. Expression of inflammatory genes was evaluated with the RT-qPCR array. Relative quantities of mRNA in duplicate samples were obtained using the LightCyclerÂ® 480 Software 1.5 and the Efficiency-Method.

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Acute effects of particulate matter (EHC-93) inhalation in mice with chronic lung inflammation

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Real-time quantitative PCR analysis of mice lung tissue (1)

Project description:Recombinant-murine S100A8 and the corresponding Cys42 to Ala42 mutant were used at 10 mg/50 ml HBSS administered onto the nares of BALB/C mice. To assess direct effects, mice were sacrificed 1, 4, 6, 12 or 20 h post-inhalation of S100A8 or 12 and 20 h post-inhalation of Ala42S100A8. For comparison with Dex inhalation (used at 10 mg/50 ml HBSS), lungs were harvested 6 and 12 h post administration. Because S100A8 is reported to initiate proinflammatory responses by ligating TLR4 and/or RAGE, a quantitative PCR array was developed to analyse 63 genes, selected to reflect potential acute inflammatory changes induced by ligation of these receptors. Expression of inflammatory genes was evaluated with the RT-qPCR array. Relative quantities of mRNA in duplicate samples were obtained using the LightCyclerM-BM-. 480 Software 1.5 and the Efficiency-Method.

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Real-time quantitative PCR analysis of mice lung tissue (2)

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