1. Unique Gene Expression Signatures in the Intestinal Mucosa and Organoids Derived from Germ-Free and Monoassociated Mice
- Author
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Monika Stastna, Klara Kostovcikova, Nikol Baloghova, Hynek Strnad, Jolana Tureckova, Lucie Janeckova, Helena Tlaskalova-Hogenova, Katerina Galuskova, Jiri Svec, Michal Kolar, Eva Sloncova, Jitka Stancikova, Vladimir Korinek, and Tomas Hudcovic
- Subjects
Colon ,Adipose tissue ,Biology ,Catalysis ,Article ,Inorganic Chemistry ,lcsh:Chemistry ,Intestinal mucosa ,ANGPTL4 ,Gene expression ,Organoid ,medicine ,Escherichia coli ,Animals ,Germ-Free Life ,Physical and Theoretical Chemistry ,Intestinal Mucosa ,Onecut2 ,Molecular Biology ,lcsh:QH301-705.5 ,Immunity, Mucosal ,Spectroscopy ,Enricher tool ,Mice, Inbred BALB C ,Gene Expression Profiling ,Microbiota ,Organic Chemistry ,Lipid metabolism ,General Medicine ,Molecular biology ,Small intestine ,Computer Science Applications ,Gene expression profiling ,Organoids ,medicine.anatomical_structure ,lcsh:Biology (General) ,lcsh:QD1-999 ,Gene Expression Regulation ,expression profiling ,Immune System ,monoassociation ,Biomarkers - Abstract
Commensal microbiota contribute to gut homeostasis by inducing transcription of mucosal genes. Analysis of the impact of various microbiota on intestinal tissue provides an important insight into the function of this organ. We used cDNA microarrays to determine the gene expression signature of mucosa isolated from the small intestine and colon of germ-free (GF) mice and animals monoassociated with two E. coli strains. The results were compared to the expression data obtained in conventionally reared (CR) mice. In addition, we analyzed gene expression in colon organoids derived from CR, GF, and monoassociated animals. The analysis revealed that the complete absence of intestinal microbiota mainly affected the mucosal immune system, which was not restored upon monoassociation. The most important expression changes observed in the colon mucosa indicated alterations in adipose tissue and lipid metabolism. In the comparison of differentially expressed genes in the mucosa or organoids obtained from GF and CR mice, only six genes were common for both types of samples. The results show that the increased expression of the angiopoietin-like 4 (Angptl4) gene encoding a secreted regulator of lipid metabolism indicates the GF status.
- Published
- 2019