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A High-Throughput In Situ Method for Estimation of Hepatocyte Nuclear Ploidy in Mice
Published on: April 19, 2020
DNA microarray analysis of the liver of mice treated with cobalt chloride
Kanako Matsumoto1, Hitomi Fujishiro, Masahiko Satoh
1Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan.
Abstract:
To investigate the in vivo effects of cobalt chloride on gene expression at early time points, DNA microarray analysis was performed on the liver of mice injected subcutaneously with cobalt chloride. The liver tissue samples were taken 0.5, 1, and 3 hr after injection. Of the 14 genes up-regulated at 0.5 hr after injection, 7 are related to immunological responses, and 4 of the 7 were found to be involved in the activation of interferon.
Insights
Cobalt chloride exposure rapidly affects mouse liver gene expression. Early immunological responses, including interferon activation, were observed within 30 minutes of injection.
Area of Science:
- Toxicology
- Molecular Biology
- Immunology
Background:
- Cobalt chloride is a chemical compound with known biological effects.
- Understanding its impact on gene expression is crucial for assessing toxicity.
- Early cellular responses to xenobiotics are not fully elucidated.
Purpose of the Study:
- To investigate the in vivo effects of cobalt chloride on gene expression.
- To identify early molecular changes in the liver following cobalt chloride administration.
- To explore the role of immunological pathways in response to cobalt chloride.
Main Methods:
- Gene expression analysis using DNA microarray.
- Subcutaneous injection of cobalt chloride in mice.
- Liver tissue sampling at 0.5, 1, and 3 hours post-injection.
Main Results:
- Significant gene expression changes were observed at early time points (0.5 hr).
- Out of 14 upregulated genes at 0.5 hr, 7 were linked to immunological responses.
- Four of these immunological genes were associated with interferon activation.
Conclusions:
- Cobalt chloride induces rapid and significant changes in liver gene expression.
- Early responses involve the activation of immunological pathways, particularly interferon signaling.
- These findings provide insights into the acute toxicological mechanisms of cobalt chloride.
