| Citation | Laing ST, Ivens A, Butler V, Ravikumar SP, Laing R, Woods DJ, Gilleard JS. The transcriptional response of Caenorhabditis elegans to Ivermectin exposure identifies novel genes involved in the response to reduced food intake. PLoS One, 2012. |
| PubMed ID | 22348077 |
| Short Description | The transcriptional response of Caenorhabditis elegans to Ivermectin exposure identifies novel genes involved in the response to reduced food intake. GEO Record: GSE22660 Platform: GPL200 Download gene-centric, log2 transformed data: WBPaper00040808.ce.mr.csv |
| # of Conditions | 20 |
Full Description
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We have examined the transcriptional response of Caenorhabditis elegans following exposure to the anthelmintic drug ivermectin (IVM) using whole genome microarrays and real-time QPCR. Our original aim was to identify candidate molecules involved in IVM metabolism and/or excretion. For this reason the IVM tolerant strain, DA1316, was used to minimise transcriptomic changes related to the phenotype of drug exposure. However, unlike equivalent work with benzimidazole drugs, very few of the induced genes were members of xenobiotic metabolising enzyme families. Instead, the transcriptional response was dominated by genes associated with fat mobilization and fatty acid metabolism including catalase, esterase, and fatty acid CoA synthetase genes. This is consistent with the reduction in pharyngeal pumping, and consequential reduction in food intake, upon exposure of DA1316 worms to IVM. Genes with the highest fold change in response to IVM exposure, cyp-37B1, mtl-1 and scl-2, were comparably up-regulated in response to short-term food withdrawal (4 hr) independent of IVM exposure, and GFP reporter constructs confirm their expression in tissues associated with fat storage (intestine and hypodermis). These experiments have serendipitously identified novel genes involved in an early response of C. elegans to reduced food intake and may provide insight into similar processes in higher organisms. Experimental Details: WBPaper00040808:0.1uM_ivermectin_exposure_rep1 WBPaper00040808:0.1uM_ivermectin_exposure_rep2 WBPaper00040808:0.1uM_ivermectin_exposure_rep3 WBPaper00040808:0.1uM_ivermectin_exposure_rep4 WBPaper00040808:0.1uM_ivermectin_exposure_rep5 WBPaper00040808:0.1uM_DMSO_control_rep1 WBPaper00040808:0.1uM_DMSO_control_rep2 WBPaper00040808:0.1uM_DMSO_control_rep3 WBPaper00040808:0.1uM_DMSO_control_rep4 WBPaper00040808:0.1uM_DMSO_control_rep5 WBPaper00040808:1.1uM_ivermectin_exposure_rep1 WBPaper00040808:1.1uM_ivermectin_exposure_rep2 WBPaper00040808:1.1uM_ivermectin_exposure_rep3 WBPaper00040808:1.1uM_ivermectin_exposure_rep4 WBPaper00040808:1.1uM_ivermectin_exposure_rep5 WBPaper00040808:1.1uM_DMSO_control_rep1 WBPaper00040808:1.1uM_DMSO_control_rep2 WBPaper00040808:1.1uM_DMSO_control_rep3 WBPaper00040808:1.1uM_DMSO_control_rep4 WBPaper00040808:1.1uM_DMSO_control_rep5. |
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