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Gallus gallus

ABSTRACT: Comparative genomic analysis of Clostridium perfringens strains Cp#4 and Cp#6 isolated from chickens affected by necrotic enteritis

PROVIDER: PRJNA1121483 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29383072.fastq.gz	Fastqsanger.gz
	SRR29383073.fastq.gz	Fastqsanger.gz

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Comprehensive Analysis of Blood Proteome Response to Necrotic Enteritis in Broiler Chicken

Project description:Necrotic enteritis (NE) in broiler chickens, caused by the overgrowth of toxin-producing strains of Clostridium (C.) perfringens, results in the development of necrotic lesions, compromised intestinal health, and significant economic losses in poultry production. This study aims to analyze the blood proteome of broiler chickens affected by NE, providing insights into the host's response to the infection. Using MS/MS-based proteomics, blood plasma samples from broilers with necrotic lesions of different severity were analyzed and compared to healthy controls. A total of 412 proteins were identified, with 63 showing significant differences and (for some of those) correlating with disease severity. Gene Set Enrichment Analysis (GSEA) revealed that proteins affected by NE were predominantly associated with the immune and signaling processes and extracellular matrix (ECM) structures. Notably, regulated proteins were significantly involved in bioprocesses related to complement activation, acute phase reaction, proteolysis and humoral immune response. The findings suggest that the changes in plasma proteins in response to NE are driven by the host's intensified efforts to counteract the infection, demonstrating a.o. a notable reduction in peptides from ECM-related proteins in the blood of NE-affected birds. Overall, proteomics results underscored the attempts of the host to manage tissue damage and inflammation, indicating a coordinated effort to mitigate the pathogenic impact of C. perfringens. This study provides a deeper understanding of the host-pathogen interactions and potential targets for therapeutic intervention.

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Gene expression profiling of Clostridium Perfringens infection in broilers on medicated and non-medicated diets.

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Project description:Genome-wide transcriptional changes in the Clostridium perfringens-afflicted chicken intestine in an avian necrotic enteritis (NE) disease model

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Project description:Clostridium perfringens chitinases, key enzymes during early stages of necrotic enteritis in broiler chickens

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Project description:Purpose: Analyze gene expression during C. perfringens colonization in the chicken Transcriptomic profile of mRNA from C. perfrinegns from in vivo and in vitro conditions were determined in biological duplicates by RNA-Seq using Illumina HiSeq 2500 Comparison of gene expression through RNA sequencing of necrotic enteritis C. perfrinegns type A of in vivo (chicken loops) and in vitro (lab culture)

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Comparison of wildtype and agrB-null mutant Type A Clostridium perfringens strain CP1

Project description:Clostridium perfringens encodes at least two different quorum sensing (QS) systems, the Agr-like and LuxS, and recent studies have highlighted their importance in the regulation of toxin production and virulence. The role of QS in the pathogenesis of necrotic enteritis (NE) in poultry and the regulation of NetB, the key toxin involved, has not yet been investigated. We have generated isogenic agrB-null and complemented strains from parent CP1, and demonstrated that the virulence of the agrB-null mutant was strongly attenuated in a chicken NE model system, and restored by complementation. The production of NetB, a key NE-associated toxin, was dramatically reduced in the agrB mutant at both the transcriptional and protein level, though not in a luxS mutant. Transwell assays confirmed that the Agr-like QS system controls NetB production through a diffusible signal. Global gene expression analysis of the agrB mutant identified additional genes modulated by Agr-like QS, including operons related to phospholipid metabolism and adherence, which may also play a role in NE pathogenesis. This study provides the first evidence that the Agr-like QS system is critical for NE pathogenesis, and identifies a number of Agr-regulated genes, most notably the NetB toxin, that are potentially involved in mediating its effects. The Agr-like QS system thus may serve as a target for developing novel interventions to prevent NE in chickens.

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Project description:Gut microbiota of necrotic enteritis chickens

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