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Home Biosecurity

Genetic Safety Switches Curb Bioterror Risk

by Global Biodefense Staff
January 28, 2015
Genomic Sequencing Standards USAMRIID

Image credit: Shutterstock

Genomic Sequencing Standards USAMRIIDSynthetic biologists have devised a way of containing their products to help ensure that they work only as intended.

Researchers have developed a set of genetic switches that can be built into engineered organisms, to control the function of genes they need to survive. The switches are controlled by the addition of a mixture of naturally occurring chemicals, which can be customized for a variety of products.

These could prevent potential harm from either the theft or misuse of these substances, which are used in biofuels, food, and medicines.

Researchers at the Universities of Edinburgh and NYU Langone Medical Center have developed two types of molecular switch that work in yeast, a commonly used model organism. The team inserted a second set of on and off switches to target another vital gene, to mitigate the risk that changes in the live yeast might enable it to circumvent chemical control.

“Synthetic biology is a fast-developing field with huge potential to benefit society, but we need to be mindful about its potential risks and take active steps to limit them in our biological designs, said Dr. Yihzi Patrick Cai of the School of Biological Sciences at the University of Edinburgh. “With these genetic safety switches, we can contain engineered organisms with a special combination of small molecules.”

The study, published in Proceedings of the National Academy of Sciences, was funded by the US Defense Advanced Research Projects Agency (DARPA) and the Biotechnology and Biological Sciences Research Council.

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Tags: BioterrorismDual Use Research of Concern (DURC)Synthetic Biology

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