Network modeling reveals genetic interactions that influence C. elegans defense against infection
Ontology highlight
ABSTRACT:
ORGANISM(S): Caenorhabditis elegans
PROVIDER: GSE98574 | GEO | 2019/01/01
REPOSITORIES: GEO
Similar Datasets
Project description:To understand the molecular mechanism of C. elegans innate immunity, we used RNA sequencing to profile gene expression in wild-type animals with or without P. aeruginosa (PA14) infection. We found that a bZIP transcription factor ZIP-11 is dramatically induced in wild-type worm upon PA14 infection. And ZIP-11 promotes innate immunity through activating PMK-1/p38 pathway and interacting with a CCAAT/enhancer-binding protein CEBP-2.
2022-12-15 | GSE155868 | GEO
Project description:To gain molecular insights on how UNC-49 regulates C. elegans innate immunity, we used RNA sequencing to profile gene expression in unc-49(e407) animals relative to wild-type animals with or without P. aeruginosa(PA14) infection. We found that UNC-49 suppresses the expression of insulin pathway genes, and lack of UNC-49-mediated suppression in unc-49(e407) animals contributes to their improved survival against P. aeruginosa infection.
2023-10-23 | GSE146406 | GEO
Project description:RNAseq was performed on hcar1-4+/+ and hcar1-4-/- zebrafish larvae with (2 h and 4 h) or without (0 h) Pseudomonas aeruginosa (PA) ear infection. The transcriptome profile generated here reveals PA14 infection-induced differential gene expression patterns between hcar1-4-/- and hcar1-4+/+ siblings.
2022-10-31 | GSE201604 | GEO
Project description:Purpose: To gain molecular insights on how UNC-25 regulates C. elegans innate immunity, we used RNA sequencing to profile gene expression in unc-25(e156) animals relative to wild-type animals with or without P. aeruginosa (PA14) infection. Methods: Synchronized L1 worms were placed onto NGM plates seeded with E. coli OP50 and grown at 20 °C until the L4 stage. Worms were washed off the plates, collected with M9 solution and subsequently transferred to modified NGM plates containing E. coli OP50 or P. aeruginosa PA14 for 24 h at 25 °C. Then, the animals were washed off the plates with M9 solution and frozen in TRIzol (Transgen, ER501-01, China) with liquid nitrogen. Total RNA was isolated using a TransZol Up Plus RNA kit (Transgen, ER501-01, China). Results: RNA seq analyses shows enriched and signficant changed immune genes, neuropeptides, transcription factors and pathways that are dependent of GABA signaling. Conclusion: Our studies uncover that GABA signaling enhance the resistence to pathogen induced killing.
2023-06-26 | GSE195835 | GEO
Project description:The nematode Caenorhabditis elegans feeds on microbes in its natural environment. Some of these microbes are pathogenic and thus harmful to C. elegans. To minimize resulting fitness reductions, C. elegans has evolved various defence mechanisms including behavioural responses (e.g. avoidance behaviour) that reduce contact with the infectious microbes. In this study, we characterized the genetic architecture of natural variation in C. elegans avoidance behaviour against the infectious stages of the Gram-positive bacterium Bacillus thuringiensis. We performed an analysis of quantitative trait loci (QTLs) using recombinant inbred lines (RILs) and introgression lines (ILs) generated from a cross of two genetically as well as phenotypically distinct natural isolates N2 and CB4856. The analysis identified several QTLs that underlie variation in the behavioural response to pathogenic and/or non-pathogenic bacteria. One of the candidates is the npr-1 gene. This gene encodes a homolog of the mammalian neuropeptide receptor. Npr-1 was previously indicated to fully contribute to behavioural defence against the Gram-negative bacterium Pseudomonas aeruginosa and food patch-leaving behaviour on Escherichia coli. Interestingly, in our study, npr-1 is not the only gene mediating avoidance behaviour toward Bacillus thuringiensis. Moreover, our functional analyses show that npr-1 alleles appear to influence survival and avoidance behaviour toward Bacillus thuringiensis in exactly the opposite way than toward Pseudomonas aeruginosa. Our findings highlight the role of npr-1 in fine-tuning nematode behaviour in an ecological context depending on the microbe to which C. elegans is exposed. These opposite phenotypes reflect the diversity in innate immunity to pathogens. To understand the mechanism involved in these opposite phenotypes, we carried out a whole-genome transcriptomics study by RNA-Sequencing. This study includes two pathogens: Pseudomonas aeruginosa PA14 and Bacillus thuringiensis B-18247 (BT247), two strains: N2 and npr-1 (ur89), two time points (12 and 24h) and standard lab food E. coli OP50 as control.
2016-03-31 | GSE60063 | GEO
Project description:Pseudomonas aeruginosa PA14 metabolic model
2022-05-09 | MODEL2205060001 | BioModels
Project description:Comparative transcriptome analyses of P. aeruginosa PA14 pyrF mutant with PA14 wild type, and with PA14 pyrF mutant with 1 mM uracil supplement and PA14 wild type with 10 mM uracil in biofilm cells. All samples were cultured in LB with glass wool at 37C for 7h. Keywords: Pseudomonas aeruginosa biofilm pyrF uracil
2008-11-12 | GSE9592 | GEO
Project description:Genomic DNA from Pseudomonas aeruginosa strains PAO1 and PA14
2015-11-15 | GSE67038 | GEO
Project description:The nematode Caenorhabditis elegans feeds on microbes in its natural environment. Some of these microbes are pathogenic and thus harmful to C. elegans. To minimize resulting fitness reductions, C. elegans has evolved various defence mechanisms including behavioural responses (e.g. avoidance behaviour) that reduce contact with the infectious microbes. In this study, we characterized the genetic architecture of natural variation in C. elegans avoidance behaviour against the infectious stages of the Gram-positive bacterium Bacillus thuringiensis. We performed an analysis of quantitative trait loci (QTLs) using recombinant inbred lines (RILs) and introgression lines (ILs) generated from a cross of two genetically as well as phenotypically distinct natural isolates N2 and CB4856. The analysis identified several QTLs that underlie variation in the behavioural response to pathogenic and/or non-pathogenic bacteria. One of the candidates is the npr-1 gene. This gene encodes a homolog of the mammalian neuropeptide receptor. Npr-1 was previously indicated to fully contribute to behavioural defence against the Gram-negative bacterium Pseudomonas aeruginosa and food patch-leaving behaviour on Escherichia coli. Interestingly, in our study, npr-1 is not the only gene mediating avoidance behaviour toward Bacillus thuringiensis. Moreover, our functional analyses show that npr-1 alleles appear to influence survival and avoidance behaviour toward Bacillus thuringiensis in exactly the opposite way than toward Pseudomonas aeruginosa. Our findings highlight the role of npr-1 in fine-tuning nematode behaviour in an ecological context depending on the microbe to which C. elegans is exposed. These opposite phenotypes reflect the diversity in innate immunity to pathogens. To understand the mechanism involved in these opposite phenotypes, we carried out a whole-genome transcriptomics study by RNA-Sequencing. This study includes two pathogens: Pseudomonas aeruginosa PA14 and Bacillus thuringiensis B-18247 (BT247), two strains: N2 and npr-1 (ur89), two time points (12 and 24h) and standard lab food E. coli OP50 as control. mRNA profiles of wild type (WT) and npr-1 (ur89) C.elegans exposed to either Bacillus thuringiensis B-18247, Pseudomonas aeruginosa PA14 or standard lab food E. coli OP50 at 12h or 24h were generated by deep sequencing, in double or triplicate, using Illumina HiSeq2000.
2016-03-31 | E-GEOD-60063 | biostudies-arrayexpress
Project description:To gain insights into the mechanisms by which RC301 compensates for the deficiency in the NPR-1 controlled immune and behavioral responses of strain DA650, we determine the whole-genome expression profile of these two strains upon exposure to Pseudomonas aeruginosa strain PA14
2017-06-10 | GSE86431 | GEO