Differential expression analysis of wildtype and zip-3(gk3164) mutant with next generation sequencing
Ontology highlight
ABSTRACT: ZIP-3 has been shown to repress the mitochondrial-UPR genes and immune response during P. aeruginosa infection. To identify genes repressed by ZIP-3, we compared transcript profiles from wildtype and zip-3(gk3164) worms raised on P. aeruginosa or E. coli.
Project description:ZIP-3 has been shown to repress the mitochondrial-UPR response. To identify genes repressed by ZIP-3, we compared transcript profiles from wildtype, atfs-1(tm4919) and zip-3(gk3164) worms raised on control RNAi or spg-7 RNAi
Project description:(Part 1) Gene expression profiles of C. elegans in response to P. aeruginosa. Synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours. These synchronized young adult (YA) animals were subsequently exposed to P. aeruginosa PA14 for 4 hours. 25dC. (Part 2) Gene expression profiles of C. elegans in response to Neomycin/Streptomycin-mediated recovery after a 4 hour exposure to P. aeruginosa. Synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours. These synchronized young adult (YA) animals were subsequently exposed to P. aeruginosa PA14 for 4 hours and then treated with Neomycin and shifted to E. coli OP50 plus Streptomycin plates for 6, 12, or 24 hours to resolve the infection. As a control for Neomycin/Streptomycin exposure, synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours and either shifted to fresh E. coli OP50 plates for 6 hours or treated with Neomycin and shifted to E. coli OP50 plus Streptomycin plates for 6 hours. 25dC.
Project description:ATFS-1 has been shown to regulate transcription of mitochondrial chaperone genes such as mtHsp70/hsp-6 and hsp-60 in response to mitocondrial stress. To identify the entire ATFS-1-mediated response, we compared the transcript profiles from wild-type and atfs-1(tm4525) worms raised in the absence and presence of mitochondrial stress. We used microarrays to identify genes regulated by ZIP-3
Project description:Very little is known about how animals discriminate pathogens from innocuous microbes. To address this question, we examined infection-response gene induction in the nematode Caenorhabditis elegans. We focused on genes that are induced in C. elegans by infection with the bacterial pathogen Pseudomonas aeruginosa, but are not induced by an isogenic attenuated gacA mutant. Most of these genes are induced independently of known immunity pathways. We generated a GFP reporter for one of these genes, infection response gene 1 (irg-1), which is induced strongly by wild-type P. aeruginosa strain PA14, but not by other C. elegans pathogens or by other wild-type P. aeruginosa strains that are weakly pathogenic to C. elegans. To identify components of the pathway that induces irg-1 in response to infection, we performed an RNA interference screen of C. elegans transcription factors. This screen identified zip-2, a bZIP transcription factor that is required for inducing irg-1, as well as several other genes, and is important for defense against infection by P. aeruginosa. These data indicate that zip-2 is part of a specialized pathogen response pathway that is induced by virulent strains of P. aeruginosa and provides defense against this pathogen. Analysis of differential gene expression in adult N2 C. elegans treated with L4440 control RNAi or zip-2 RNAi, either uninfected (feeding on E. coli) or infected with P. aeruginosa PA14; samples were analyzed after 4 hours of infection
Project description:Very little is known about how animals discriminate pathogens from innocuous microbes. To address this question, we examined infection-response gene induction in the nematode Caenorhabditis elegans. We focused on genes that are induced in C. elegans by infection with the bacterial pathogen Pseudomonas aeruginosa, but are not induced by an isogenic attenuated gacA mutant. Most of these genes are induced independently of known immunity pathways. We generated a GFP reporter for one of these genes, infection response gene 1 (irg-1), which is induced strongly by wild-type P. aeruginosa strain PA14, but not by other C. elegans pathogens or by other wild-type P. aeruginosa strains that are weakly pathogenic to C. elegans. To identify components of the pathway that induces irg-1 in response to infection, we performed an RNA interference screen of C. elegans transcription factors. This screen identified zip-2, a bZIP transcription factor that is required for inducing irg-1, as well as several other genes, and is important for defense against infection by P. aeruginosa. These data indicate that zip-2 is part of a specialized pathogen response pathway that is induced by virulent strains of P. aeruginosa and provides defense against this pathogen.
Project description:To clarify the mechanisms of innate immune responses mediated by epithelial barrier disruption. Reveal the host’s broad transcriptional response to P. aeruginosa infection during disruption of the intestinal barrier. We used RNA-Seq analysis to study the transcriptomic profiles of wt worms were exposed to either P. aeruginosa PA14 or E. coli OP50 for 24 hours, and the transcriptomic profiles of egl-44(MT2247) mutants fed E. coli OP50 for 24 hours. Differential expression analysis was performed by comparing wt worms exposed to PA14 versus wt worms exposed to E. coli OP50, and egl-44(MT2247) mutants fed E. coli OP50 versus WT worms fed E. coli OP50.
Project description:To identify candidate genes whose expressions were regulated by P. aeruginosa PA01, we used RNA-Seq analysis to study the transcriptomic profiles of mid-L4 worms exposed to P. aeruginosa PA01 for 12 hours. Differential expression analysis was performed by comparing WT worms exposed to P. aeruginosa PA01 for 12 hours versus worms fed E. coli OP50.
Project description:Using ChIP-DSL technology from Aviva Systems Biology to find out the whole genome targets for ZIP transcription repressor We analyzed arrays using specific ZIP antibody and negative control to acquire the enriched ratio of each gene