C. elegans’ feeding behavior strongly influences the worm’s aging and longevity. We tested adult worms to quantify how aging affects their feeding behavior. In older adults, pharyngeal pumping was weaker and less regular.
Nemametrix Inc., a life sciences startup that created the innovative ScreenChip System for drug screening, mutant phenotyping, and toxicological assessment, has entered into a marketing partnership with Knudra Transgenics, a genome engineering company specializing in custom built transgenic model organisms for research and drug discovery.
The NemaMetrix ScreenChip system was developed for C. elegans, which is but one of the estimated 1 million members of the highly diverse phylum, Nematoda. To demonstrate the utility of microfluidic EPG recordings from species beyond C. elegans, we adapted the platform to record from several human and animal gastrointestinal parasites, male and female members of a dioecious nematode species, and a carnivorous nematode.
The heavy metal, copper (Cu2+), is toxic to humans and C. elegans. We used the ScreenChip system to detect Cu2+ in aqueous samples at concentrations (≤10 mg/L) within the range found in contaminated home water supplies. EPG recordings provide a powerful new tool for C. elegans toxicology research.
The NemaMetrix ScreenChip System is a microfluidics platform for recording electropharyngeograms (EPGs) from the nematode worm Caenorhabditis elegans and other nematode species. This technical note demonstrates the utility of the ScreenChip system in pharmacology, taking as an example compounds chemically related to Δ9-tetrahydrocannabinol (THC), the primary psychoactive compound in marijuana (Cannabis sativa).