Project description:The objective of this study is to investigate to what extent gene expression data of dietary interventions generated in IPEC-J2 in vitro model overlap with in vivo data. Gene expression was recorded in IPEC-J2 cells upon exposure to three different dietary interventions commonly used in livestock. In a further step, we compared the results with mucosal gene expression responses, as measured in animals exposed to the same compounds via the diet. As compounds we used zinc oxide, rye and the antibiotic amoxicillin. The GEO accession numbers of the in vivo datasets are provided in the paper "Enrichment of in vivo determined transcription data from dietary intervention studies with in vitro data provides improved insight into gene regulation mechanisms" (submitted to "Genes and Nutrition").
Project description:The intestinal epithelial cell lines 1 and J2 (IPEC-1, IPEC-J2) - spontaneously immortalised cell lines from the porcine intestine - are important tools for studying intestinal function. Microarrays (GeneChip Porcine Genome Array) were used to compare the expression pattern at basal in vitro conditions. Expression analyses complemented by morphological, functional and biochemical analyses revealed that IPEC-J2 is a morphologically and functionally more differentiated cell line in comparison to IPEC-1. In addition, IPEC-2 cells are a preferential tool for in vitro studies with the focus on metabolism.
Project description:Deoxynivalenol (DON) frequently detected in a wide range of foods and feeds, inducing cytotoxicity to animals and humans. N6-methyladenosine (m6A) is an important epitranscriptomic marker with high abundance in eukaryotic mammals mRNAs. However, the role of the m6A methylomes in DON damage is still poorly understood. Here, we investigated the m6A transcriptome-wide profile in intestinal porcine epithelial cells (IPEC-J2) with and without 1000 ng/mL DON treatment via m6A sequencing and RNA sequencing. In total, 5406 new m6A peaks appeared with the disappearance of 2615 peaks in DON-induced IPEC-J2. The unique m6A-modified genes in DON-induced IPEC-J2 were associated with TNF signaling pathway. We identified 733 differentially expressed mRNA transcripts with hyper-methylated or hypo-methylated m6A peaks between DON-induced IPEC-J2 and normal IPEC-J2. Protein interaction network analysis and qPCR validation suggested that CSF2 probably acts as a promising new target for combating DON damage in IPEC-J2. Our first report of m6A transcriptome-wide map of IPEC-J2 cells presented here provides a starting roadmap for uncovering m6A functions that may affect DON infection.
Project description:Non-starch soluble polysaccharides (NSPs) produced by yeasts are used in animal nutrition to improve health and performance. However, the magnitude of the effect may be dependent upon the quantity and the composition of the polysaccharides. As seaweeds are attractive sources of NSPs, this study was set up to evaluate their potential to improve intestinal health. The effect of NSP extracts prepared from Saccharomyces cerevisiae containing β-glucan and mannan (PSY1, positive control) or a mixture of mannanoligosaccharides (PSY2, positive control), micro algae containing β-glucan (PSA1), brown macro algae containing fucoidan and laminarin (PSA2), and green macro algae containing ulvan (PSA3) on intestinal porcine epithelial cells J2 (IPEC-J2) was studied in the presence and absence of the enterotoxigenic bacterium Escherichia coli k99 strain (ETEC) as an in vitro challenge. The E.coli-k99 strain with adhesion factor F41 (41/32) was isolated from a mastitis-infected udder. In addition, a mixed extract prepared from vegatal orgin supplemented with phenolic compounds from vegetal origin, zinc and selenium (9631), and ZnO were tested to compare responses to NSP extracts. Gene expression was measured in IPEC-J2 cells after 2 and 6 hours of incubation using “whole genome” porcine microarrays (submission as a conference paper at the SEAGRICULTURE 2017 6th International Seaweed Conference).
Project description:To gain a more complete understanding of how porcine cathelicidin PR-39 influence the porcine intestinal epithelial cells, we profiled gene expression patterns in IPEC-J2 cell line in the presence or the absence of PR-39.
Project description:To understand the immunomodulatory effects of deoxyshikonin (a natural derivative of well-known Chinese medicine shikonin) on porcine intestinal epithelium cells, the transcriptome analysis was performed to explore the transcriptional profile of porcine IPEC-J2 cells after deoxyshikonin treatment.
Project description:To gain a more complete understanding of how porcine cathelicidin PR-39 influence the porcine intestinal epithelial cells, we profiled gene expression patterns in IPEC-J2 cell line in the presence or the absence of PR-39. two groups(control and PR-39),each group has three replicates
Project description:Here we analysed different mechanisms of apical and basolateral deoxynivalenol (DON) toxicity reflected in the gene expression. We used the jejunum derived, polarized intestinal porcine epithelial cell line IPEC‑J2 as an in vitro cell culture model. Luminal and blood stream DON intoxication was mimicked by a DON application from the apical or basolateral compartment of ThinCert® membrane inserts for 72 h.
Project description:Here we analysed different mechanisms of apical and basolateral deoxynivalenol (DON) toxicity reflected in the gene expression. We used the jejunum derived, polarized intestinal porcine epithelial cell line IPECM-bM-^@M-^QJ2 as an in vitro cell culture model. Luminal and blood stream DON intoxication was mimicked by a DON application from the apical or basolateral compartment of ThinCertM-BM-. membrane inserts for 72M-BM- h. We compared the genome wide gene expression of untreated and DON-treated IPEC-J2 cells by the GeneChipM-BM-. Porcine Genome Array of Affymetrix.
