title: Identification of Gene Expression Signatures in the Chicken Intestinal Intraepithelial Lymphocytes in Response to Herb Additive Supplementations.
abstract: Anethole and garlic have an immune modulatory effects on avian coccidiosis, and these effects are correlated with gene expression changes in intestinal epithelial lymphocytes (IELs). In this study, we integrated gene expression datasets from two independent experiments and investigated gene expression profile changes by anethole and garlic respectively, and identified gene expression signatures, which are common targets of these herbs as they might be used for the evaluation of the effect of plant herbs on immunity toward avian coccidiosis. We identified 4,382 and 371 genes, which were differentially expressed in IELs of chickens supplemented with garlic and anethole respectively. The gene ontology (GO) term of differentially expressed genes (DEGs) from garlic treatment resulted in the biological processes (BPs) related to proteolysis, e.g., "modification-dependent protein catabolic process", "proteolysis involved in cellular protein catabolic process", "cellular protein catabolic process", "protein catabolic process", and "ubiquitin-dependent protein catabolic process". In GO analysis, one BP term, "Proteolysis", was obtained. Among DEGs, 300 genes were differentially regulated in response to both garlic and anethole, and 234 and 59 genes were either up- or down-regulated in supplementation with both herbs. Pathway analysis resulted in enrichment of the pathways related to digestion such as "Starch and sucrose metabolism" and "Insulin signaling pathway". Taken together, the results obtained in the present study could contribute to the effective development of evaluation system of plant herbs based on molecular signatures related with their immunological functions in chicken IELs.
authors.affiliation: Department of Animal Biotechnology, ChonBuk National University, Jeonju 54896, Korea.
authors.forename: Kyeong-Hye
authors.initials: KH
authors.lastname: Won
authors.affiliation: Department of Animal Biotechnology, ChonBuk National University, Jeonju 54896, Korea.
authors.forename: Ki-Duk
authors.initials: KD
authors.lastname: Song
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Jeonju 54896, Korea.
authors.forename: Jong-Eun
authors.initials: JE
authors.lastname: Park
authors.affiliation: C&K Genomics, Seoul 08826, Korea.
authors.forename: Duk-Kyung
authors.initials: DK
authors.lastname: Kim
authors.affiliation: Department of Animal Biotechnology, ChonBuk National University, Jeonju 54896, Korea.
authors.forename: Chong-Sam
authors.initials: CS
authors.lastname: Na
keywords: Chicken; Coccidia; Differentially Expressed Genes; Integrative Analysis; Plant Herbs