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(Epi)genetic regulation of zebrafish intestinal development

ABSTRACT: (Epi)genetic regulation of zebrafish intestinal development

PROVIDER: PRJNA484346 | ENA |

REPOSITORIES: ENA

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(Epi)genetic regulation of zebrafish intestinal development

Project description:The goal of the experiment was to characterize the wild type larval intestine in zebrafish. Tg(cldn15la:GFP) intestine-specific transgene was used to ease dissections. RNAseq was performed at 5, 7, 9 dpf on wild type dissected intestines to characterize the transcriptome. ChIPseq was performed at 5, 7, 9 dpf on wild type dissected intestines to check the intestinal presence of active (H3K4me3) and repressive (H3K27me3) chromatin marks and to correlate their presence with intestinal gene expression.

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Project description:Cyberlindnera jadinii yeast is a potential sustainable novel feed ingredient for aquaculture industries. Yeasts contain bio-active components and proteins such as beta-glucans, mannans, nucleic acids and proteins that can enhance fish immunity against the disease. In our study, we focused on the characterization of intestinal immunoregulatory pathways in zebrafish (Danio rerio) by quantifying the intestine proteins with isobaric tags for relative and absolute quantitation (iTRAQ) and 2D LC-MS/MS approach. Zebrafish were fed either a control diet (C) or a diet supplemented with autolyzed C. jadinii (ACJ). The KEGG pathways analysis revealed that compared with the control diet, the ACJ yeast diet induced an increased abundance of proteins related to arginine and proline metabolism, phagosome, C-lectin receptor signalling pathway, ribosome pathway and PPAR signalling pathway, which can modulate and enhance the innate response of zebrafish. Moreover, fish fed ACJ yeast diet also showed decreased abundance of proteins associated with inflammatory pathways including apoptosis, necroptosis and ferroptosis pathways. These findings support a mobilization of the innate immune response and a control of inflammatory-related pathways in the intestine of zebrafish. Our findings in the well annotated proteome of zebrafish enabled a detailed investigation of intestinal responses and provide insight into the health-beneficial effects of the yeast species C. jadinii relevant for aquaculture species.

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