Unknown,Transcriptomics,Genomics,Proteomics

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Improved resistance to Eimeria acervulina infection in chickens due to dietary supplementation with garlic metabolites

ABSTRACT: This study utilized comparative global gene expression microarray analysis to evaluate the effects of a compound including garlic-derived secondary metabolites on intestinal immunity of chicken. Two-condition experiment, Garlic metabolites-fed chickens vs. Non-treated control chickens. Biological replicates: 2 control replicates, 2 Garlic metabolites-fed replicates with dye-switching.

ORGANISM(S): Gallus gallus

SUBMITTER: Duk Kyung Kim

PROVIDER: E-GEOD-36302 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:The suppression of sprout growth is critical for the long-term storage of potato tubers. 1,4-dimethylenapthlene (DMN) is a new class of sprout control agent but the metabolic mode of action for this compound has yet to be elucidated. Changes in transcriptional profiles of meristems isolated from potato tubers treated with the DMN were investigated using an Agilent 44K 60-mer-oligo microarray. RNA was isolated from nondormant Russet Burbank meristems isolated from tubers treated with DMN for three days or activated charcoal as a control. RNA was used to develop probes that were hybridized against a microarray developed by the Potato Oligo Chip Initiative (POCI). Analysis of the array data was conducted in two stages: total array data was examined using a linear model and the software limma and pathway analysis was conducted by linking the potato sequences to the Arabidopsis thaliana. DMN elicited a change in a number of transcripts associated with cold responses, water regulation, salt stress and osmotic adjustment. Additionally, repression of auxin signaling and transport were observed in DMN-treated tubers, and connections between DMN treatment and repression of FT through mi156 regulation were indicated. DMN also resulted in a repression of cyclin or cyclin-like transcripts. DMN also resulted in a 50% decrease in thymidine incorporation suggesting a repression of the S-phase of the cell cycle. QT-PCR analysis demonstrated that DMN increased transcripts for the cell cycle inhibitors KRP1 and KRP2. We conclude the DMN results in alteration of genes associated with cold responses and water regulation and maintenance of a G1/S-phase block possibly through the induction of the cell cycle inhibitors KRP1 andKRP2. Twelve samples, four treatments, three biological replicates Non dormant meristems as control (Control-rep), meristems isolated from tubers treated with water for three days (Control3Days-rep), meristems treated with DMN for three days (DMN3Days-rep), meristems treated with DMN for three days and then vented to the air for two days (DMN3Days-2Out-rep).

Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goals of this study are to compare transcriptome profiling of control of C. albicans ATCC 10231 (RNA-seq) to transcriptome profiling of garlic oil-treated C. albicans ATCC 10231 and to evaluate protocols for optimal high-throughput data analysis Methods:SDB medium, C. albicans cells and garlic oil were added to two separate 50 mL conical flasks. The initial cell concentrations in culture were both 105 CFU/mL. The cultures were incubated in a water bath shaker at 28 ºC with shaking at 150 rpm for 12 h. Garlic oil or PBS buffer were then added to the cultures to make the concentrations of garlic oil arrived at 0 (control) and 1.25 ?l/mL, respectively. The cultures were continuously incubated at the same conditions for 5 h. The cells were then sampled and centrifuged. The cell precipitates in the control and 1.25 ?l/mL garlic oil groups were quickly separately frozen at -80 ºC. Then total RNA were repared from the cell pellets. Results:The RNA sequencing results showed that many genes in C. albicans exposed to garlic oil were differentially expressed. Nearly three thousand genes were differentially expressed, with either an increase or decrease of more than twofold. Most of them were down regulated while a small number were upregulated. Conclusions: Our study indicated that garlic oil induced differential expression of some critical genes, such as genes for cellular response to drugs, oxidation-reduction processes, pathogenesis, and the cellular response to starvation. Moreover, the differentially expressed genes were mainly clustered in 19 KEGG pathways, such as oxidative phosphorylation, spliceosome, cell cycle, protein processing in endoplasmic reticulum, pyrimidine metabolism, meiosis, RNA transport, ribosome biogenesis, and RNA degradation. The mRNA profiles of C. albicans ATCC 10231 (ck) and garlic oil-treated C. albicans ATCC 10231 (sample1) were generated by deep sequencing, in one time, using Illumina Higseq 2500.

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Improved resistance to Eimeria acervulina infection in chickens due to dietary supplementation with garlic metabolites

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