Clostridium perfringens
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PROVIDER: PRJDB11865 | ENA |
REPOSITORIES: ENA
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Project description:Enterotoxin-producing C. perfringens type A is a common cause of food poisonings. The cpe encoding the enterotoxin can be chromosomal (genotype IS1470) or plasmid-borne (genotypes IS1470-like-cpe or IS1151-cpe). The chromosomal cpe-carrying C. perfringens are a more common cause of food poisonings than plasmid-borne cpe-genotypes. The chromosomal cpe-carrying C. perfringens type A strains are generally more resistant to most food-processing conditions than plasmid-borne cpe-carrying strains. On the other hand, the plasmid-borne cpe-positive genotypes are more commonly found in human feces than chromosomal cpe-positive genotypes, and humans seem to be a reservoir for plasmid-borne cpe-carrying strains. Thus, it is possible that the epidemiology of C. perfringes type A food poisonings caused by plasmid-borne and chromosomal cpe-carrying strains is different. A DNA microarray was designed for analysis of genetic relatedness between the different cpe-positive and cpe-negative genotypes of C. perfringens strains isolated from human, animal, environmental and food samples. The DNA microarray contained two probes for all protein-coding sequences in the three genome-sequenced strains (C. perfringens type A strains 13, ATCC13124, and SM101). The chromosomal and plasmid-borne C. perfringens genotypes were grouped into two distinct clusters, one consisting of the chromosomal cpe-genotypes and the other consisting of plasmid-borne cpe-genotypes. Analysis of the variable gene pool complemented with the growth studies demonstrate different carbohydrate and amine metabolism in the chromosomal and plasmid-borne cpe-carrying strains, suggesting different epidemiology of the cpe-positive C. perfringens strain groups.
2012-03-01 | GSE30954 | GEO
Project description:Enterotoxin-producing C. perfringens type A is a common cause of food poisonings. The cpe encoding the enterotoxin can be chromosomal (genotype IS1470) or plasmid-borne (genotypes IS1470-like-cpe or IS1151-cpe). The chromosomal cpe-carrying C. perfringens are a more common cause of food poisonings than plasmid-borne cpe-genotypes. The chromosomal cpe-carrying C. perfringens type A strains are generally more resistant to most food-processing conditions than plasmid-borne cpe-carrying strains. On the other hand, the plasmid-borne cpe-positive genotypes are more commonly found in human feces than chromosomal cpe-positive genotypes, and humans seem to be a reservoir for plasmid-borne cpe-carrying strains. Thus, it is possible that the epidemiology of C. perfringes type A food poisonings caused by plasmid-borne and chromosomal cpe-carrying strains is different. A DNA microarray was designed for analysis of genetic relatedness between the different cpe-positive and cpe-negative genotypes of C. perfringens strains isolated from human, animal, environmental and food samples. The DNA microarray contained two probes for all protein-coding sequences in the three genome-sequenced strains (C. perfringens type A strains 13, ATCC13124, and SM101). The chromosomal and plasmid-borne C. perfringens genotypes were grouped into two distinct clusters, one consisting of the chromosomal cpe-genotypes and the other consisting of plasmid-borne cpe-genotypes. Analysis of the variable gene pool complemented with the growth studies demonstrate different carbohydrate and amine metabolism in the chromosomal and plasmid-borne cpe-carrying strains, suggesting different epidemiology of the cpe-positive C. perfringens strain groups. Array CGH. Two-color hybridizations on 8x15K Agilent arrays. Eight reference strain hybridizations. Normalization was based on log-ratios against the reference strain. For each sample, 8 normalization factors were calculated, one against each reference hybridization, and the median normalization factor was used. This was repeated for each sample hybridization separately.
2012-03-01 | E-GEOD-30954 | biostudies-arrayexpress
Project description:Clostridium perfringens type A is a common source of food poisoning in humans. Vegetative cells sporulate in the small intestinal tract and produce a major pathogenic factor, C. perfringens enterotoxin (CPE) during sporulation. Although sporulation plays a critical role in the pathogenesis of food poisoning, the mechanisms to induce in vivo sporulation remain unclear. Bile salts had been identified to mediate sporulation, and we have confirmed deoxycholate (DCA)-induced sporulation in C. perfringens strain NCTC8239 co-cultured with human intestinal epithelial Caco-2 cells. In this study, we performed global transcriptome analysis of strain NCTC8239 to elucidate the mechanism to induce sporulation by DCA.
2016-03-13 | GSE69649 | GEO
Project description:Clostridium perfringens type A is a common source of food poisoning in humans. Vegetative cells sporulate in the small intestinal tract and produce a major pathogenic factor, C. perfringens enterotoxin (CPE) during sporulation. Although sporulation plays a critical role in the pathogenesis of food poisoning, the mechanisms to induce in vivo sporulation remain unclear. Bile salts had been identified to mediate sporulation, and we have confirmed deoxycholate (DCA)-induced sporulation in C. perfringens strain NCTC8239 co-cultured with human intestinal epithelial Caco-2 cells. In this study, we performed global transcriptome analysis of strain NCTC8239 to elucidate the mechanism to induce sporulation by DCA. From the 55 contigs of C. perfringens strain NCTC8239, 2778 coding sequences were extracted. We designed a DNA probe by utilizing eArray provided by Agilent Technologies. The custom 8Ã15K oligonucleotide array, containing 60 mer oligonucleotide probes for 2,778 genes in strain NCTC8239, 2 bacterial control genes: 16S rRNA and 23S rRNA, and 3 human control genes: beta-2-microglobulin, glucuronidase beta and 18S rRNA, were ordered to Agilent Technologies. Each probe was spotted in five-fold on each microarray. Each strain was run in triplicate or quadruplicate.
2016-03-13 | E-GEOD-69649 | biostudies-arrayexpress
Project description:Clostridium perfringens is an anaerobic, gram-positive, spore-forming bacterium spread throughout the environment. This bacterium is a common agent in the gastrointestinal tracts of healthy human beings and other mammals. Simultaneously, this agent is one of the most significant producers of toxins among all known bacteria. This expressive toxicity is due to the bacterium’s ability collectively to produce different protein toxins and/or enzymes with diverse modes of action. The present study uses currently developed targeted proteomic methods for the simultaneous detection of selected C. perfringens protein toxins. The method was applied in different kinds of environmental matrices and was used to analyze toxins production in a set of collection strains.
2019-03-25 | PXD012528 | Pride
Project description:Purpose: RNA-Seq has become a powerful tool for investigating transcriptional profiles in gene expression analysis, which would help to reveal the molecular mechanism of Clostridium perfringens type C infecting the piglets. In this study, we analyzed miRNA profiles of the ileum of piglets caused by Clostridium perfringens type C. Methods: 30 normal 7-day-old piglets (Y x L), without infecting Clostridium perfringens type C, Escherichia coli and Salmonella, were selected as experimental subjects. 25 piglets were randomly selected as the experimental group, which were disposed once a day for 5 days. Each piglet was dosed with 1 ml of bouillon culture-medium inoculated Clostridium perfringens type C at 37℃ for 16h, which approximate to 1 x10e9 CFU per ml. Then, 5 piglets were randomly selected as the control group (IC), which were taken the equal volume medium for 5 days.Based on total diarrhea scores, 25 piglets were ranked from high to low. The top and last five piglet were considered as sensitive group (IS) and resistant group (IR), respectively. Finally, ileum were collected and sequenced for miRNA. Result: 53 differentially expressed miRNAs were found. KEGG pathway analysis for target genes revealed that these miRNAs were involved in ErbB signaling pathway, MAPK signaling pathway, Jak-STAT signaling pathway and Wnt signaling pathway. The expression correlation analysis between miRNAs and target genes revealed that the expression of miR-7134-5p had negative correlation with target NFATC4, miR-500 had negative correlation with target ELK1, HSPA2 and IL7R, and miR-92b-3p had negative correlation with target CLCF1 in ileum of IR vs IS group, suggesting that miR-7134-5p targeting to NFATC4, miR-500 targeting to ELK1, HSPA2 and IL7R, and miR-92b-3p targeting to CLCF1 were probably involved in piglet resisting C. perfringens type C. Conclusions: The results will provide value resources for better understanding of the genetic basis of C. perfringens type C resistance in piglet and lays a new foundation for identifying novel markers of C. perfringens type C resistance
2022-04-24 | GSE130471 | GEO
Project description:Purpose: RNA-Seq has become a powerful tool for investigating transcriptional profiles in gene expression analysis, which would help to reveal the molecular mechanism of Clostridium perfringens type C infecting the piglets. In this study, we analyzed miRNA profiles of the spleen of piglets caused by Clostridium perfringens type C. Methods: 30 normal 7-day-old piglets (Y x L), without infecting Clostridium perfringens type C, Escherichia coli and Salmonella, were selected as experimental subjects. 25 piglets were randomly selected as the experimental group, which were disposed once a day for 5 days. Each piglet was dosed with 1 ml of bouillon culture-medium inoculated Clostridium perfringens type C at 37℃ for 16h, which approximate to 1 x109 CFU per ml. Then, 5 piglets were randomly selected as the control group (SC), which were taken the equal volume medium for 5 days.Based on total diarrhea scores, 25 piglets were ranked from high to low. The top and last five piglet were considered as sensitive group (SS) and resistant group (SR), respectively. Finally, spleen were collected and sequenced for miRNA. Result: 88 differentially expressed miRNAs were found. KEGG pathway analysis for target genes revealed that these miRNAs were involved in MAPK signaling pathway, mTOR signaling pathway, FoxO signaling pathway, p53 signaling pathway and ECM-receptor interaction. And 4 miRNAs (miR-133b, miR-532-3p, miR-339-5p and miR-331-3p) of closely related to piglets resistance to C. perfringens type C were obtained. The expression correlation analysis between these miRNAs and target genes revealed that the expression of miR-133b and miR-532-3p had negative correlation with their target NFATC4, miR-339-5p had negative correlation with target HTRA3, and miR-339-5p and miR-331-3p had negative correlation with target TNFAIP8L2 in spleen, suggesting that miR-133b and miR-532-3p targeting to NFATC4, miR-339-5p targeting to HTRA3, and miR-339-5p and miR-331-3p targeting to TNFAIP8L2 were probably involved in piglet resisting C. perfringens type C. Conclusions:The results will provide value resources for better understanding of the genetic basis of C. perfringens type C resistance in piglet and lays a new foundation for identifying novel markers of C. perfringens type C resistance.
2020-06-04 | GSE145302 | GEO
Project description:Purpose: RNA-Seq has become a powerful tool for investigating transcriptional profiles in gene expression analysis, which would help to reveal the molecular mechanism of Clostridium perfringens type C infecting the piglets. In this study, we analyzed the transcriptome profiles of the spleen of piglets caused by Clostridium perfringens type Cens type C. Methods: 30 normal 7-day-old piglets (Y x L), without infecting Clostridium perfringens type C, Escherichia coli and Salmonella, were selected as experimental subjects. 25 piglets were randomly selected as the experimental group, which were disposed once a day for 5 days. Each piglet was dosed with 1 ml of bouillon culture-medium inoculated Clostridium perfringens type C at 37℃ for 16h, which approximate to 1 x109 CFU per ml. Then, 5 piglets were randomly selected as the control group (SC), which were taken the equal volume medium for 5 days.Based on total diarrhea scores, 25 piglets were ranked from high to low. The top and last five piglet were considered as sensitive group (SS) and resistant group (SR), respectively. Finally, spleen were collected and sequenced for lncRNA and mRNA. Results: RNA libraries constructed from spleen of piglets caused by Clostridium perfringens type C were sequenced. A total of 1,450,292,484 clean reads were generated. Among them, 2056 novel lncRNA transcripts corresponding to 1561 lncRNA genes were identified, including 1811 intergenic lncRNAs and 245 anti-sense lncRNAs. The identified spleen lncRNAs shared some characteristics, such as fewer exons and shorter length, with the lncRNAs in other animal. Notably, in pairwise comparisons between the libraries of spleen tissue at the different group, a total of 247 lncRNA and 2170 mRNA were differentially expressed (P < 0.05). Function analyses indicated that these differentially expressed lncRNAs and mRNAs play roles in defensing Clostridium perfringens type C, which were enriched in immune-related biological processes, such as the antigen processing and presentation, TNF signaling pathway, NF-kappa B signaling pathway, B cell receptor signaling pathway and MAPK signaling pathway. Conclusions: This study provides the information of spleen-related lncRNAs in swine diarrhea with Clostridium perfringens type C. We also analyzed all lncRNA’s genomic feature and expression. Bioinformatic analysis indicates that some lncRNAs participated in important biological processes associated with defeasing Clostridium perfringens type C, such as antigen processing and presentation, the MHC protein complex and regulation of autophagy.
2018-11-01 | GSE105797 | GEO
Project description:Identification of Novel toxin homologs of Clostridium perfringens
| PRJNA508810 | ENA
Project description:RevR is a putative orphan response regulator with a high degree of similarity to YycF from Bacilus subtilis and PhoB from Clostridium kluyveri. A revR deletion mutant of C. perfringens strain 13 was generated and the transcriptome analysed using microarrays.
2011-01-17 | GSE26508 | GEO