Project description:Transcriptomics of Ivermectin Response in Caenorhabditis elegans: integrating Abamectin Quantitative Trait Loci and Comparison to the Ivermectin-Exposed DA1316 Strain
Project description:We have investigated the transcriptomic response of the model nematode Caenorhabditis elegans to ivermectin (IVM); an important anthelmintic for human and animal parasite control. The transcriptomic response of the mutant strain DA1316 avr-14(ad1302); avr-15(ad1250); glc-1(pk54), which is highly resistant to ivermectin due to null mutations in three glutamate-gated chloride channel subunits, was examined. Despite the resistant nature of this strain, pharyngeal pumping rate was decreased following 4 hrs exposure to 100ng/ml and 1μg/ml ivermectin resulting in significant change in the expression level of genes associated with a fasting response.
Project description:We have investigated the transcriptomic response of the model nematode Caenorhabditis elegans to ivermectin (IVM); an important anthelmintic for human and animal parasite control. The transcriptomic response of the mutant strain DA1316 avr-14(ad1302); avr-15(ad1250); glc-1(pk54), which is highly resistant to ivermectin due to null mutations in three glutamate-gated chloride channel subunits, was examined. Despite the resistant nature of this strain, pharyngeal pumping rate was decreased following 4 hrs exposure to 100ng/ml and 1?g/ml ivermectin resulting in significant change in the expression level of genes associated with a fasting response. Matched cultures of synchronised C. elegans were grown to L4 stage on standard NGM plates with an OP50 bacterial lawn. The nematodes were then transferred to NGM plates containing 100ng/ml ivermectin, 1?g/ml ivermectin, or DMSO excipient only (control) for 4 hours. RNA was extracted from five biological replicates including controls for both the 100ng/ml ivermectin and 1?g/ml ivermectin experiments and hybridised to Affymetrix arrays.
Project description:Expression profiles of AhR mutant vs N2 wild-type C.elegans, in L1 larval stage compared by using 23232 feature WUSTL microarray 4 ahr-mutant worm samples compared to 3 wild-type samples. Total RNAs purified and reverse transcribed to cDNA and labeled with Cy3-dUTP, and then hybridized on microarray.
Project description:Transcriptional profiling of adult C.elegans exposed to E.coli or to GFP-expressing P. aeruginosa (strain PA14). For P. aeruginosa exposure, worms were separated into 2 groups - fully colonized (green) or non-colonized (dark).
Project description:We used four C. elegans strains: N2(wild type), wdr-5(ok1417) III, rbbp-5(tm3463) II, and ash-2(tm1905) II. By sequence the mRNAs from embryos of these worms we try to assess the effect of these mutations in gene regulation of C.elegans.
Project description:Transcriptional profiling of adult C.elegans exposed to E.coli or to GFP-expressing P. aeruginosa (strain PA14). For P. aeruginosa exposure, worms were separated into 2 groups - fully colonized (green) or non-colonized (dark). Three conditions (E.coli, P. aeurginosa colonized, and P. aeurginosa non-colonized). 2-color arrrays, each sample co-hybridized with the same reference RNA sample from mixed stage C.elegans cultures Each condition includes 3 biological replicates - 2 using the wormsorter (WS) to separate colonized from non-colonized and one hand picked (HP) under a fluorescent stereoscope