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Team:UCSF/Project/Background1
From 2013.igem.org
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Revision as of 18:37, 27 October 2013
Operation CRISPR: Deploying precision guided tools to target unique species in a complex microbiome
Rarely in nature do bacterial strains exist in isolation; they form complex microbial communities that interact with various organisms. We ourselves contain a major microbial community in our digestive tract that has shown to directly affect our health and well-being. As shown on the left, to improve and maintain healthly living it would be useful to have the ability to change the microbial community. For example, if a large of amount of a certain sugar was present in your gut ("signal #1") you might want to slow the growth of a certain bacterial populations . In another scenario ("signal #2") it might be useful to increase the growth of other specific bacteria in your gut. But targeting precise bacterial community strains and controlling their growth, activity, and outputs is difficult and requires many new tools.
At the beginning of this summer, we asked ourselves a question: “What could we introduce to a microbiome which would allow targeting and eventual gene expression changes in a specific bacteria?” The difficulty faced with this situation is in
- Introduce a targeting system into a defined mixture of bacteria such that you can select and introduce manipulations without negatively affecting other bacteria.
- Creating easy to transfer pathways or circuits that can produce a multitude of outcomes (killing, repressing, upregulating)
