Team:Cooper Union/Outreach
From 2014.igem.org
Programmable Lifespan Timer
The Programmable Lifespan Timer project aims to create a “kill switch" for cells used in production. In the case that these cells leave the lab environment, they will die after a set amount of time, preventing the release of unwanted chemicals into the environment, or mating with wild type organisms.In our presentation to the Cooper Union Summer STEM students, we explained the significance of telomeres and telomerase in yeast, as well as our experimentation in gene deletion. Our activity incorporated Twizzlers, which represented various telomere lengths. The "telomeres" had different lengths due to different gene knockouts. The intention of the activity was to convey the idea that chromatids with longer telomeres would live longer in comparison to those with shorter telomeres.
We also discussed senescence in yeast cells in the absence of telomerase, and described how the cells could recover with a backup mechanism called homologous recombination. A growth curve showing the cell density of yeast as it underwent senescence over time was displayed. We wrapped up the presentation with a fun word search that reinforced main ideas. You can download our presentation here.