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A ‘Bionic Nose’ That Knows

Bioengineer by Bioengineer
April 3, 2009
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Using molecular techniques in nanotechnology, Prof. Doron Shabat of TAU's Raymond and Beverly Sackler School of Chemistry has engineered new molecules that have the power to identify targets — such as biomarkers in cancer, materials in explosives, or pollutants in water — even when present in miniscule amounts. Prof. Shabat’s invention, like a bionic nose, can “sniff out” these trace molecules and amplify them tenfold, making them noticeable for doctors and crimefighters.
 
Fights Chemical and Biological Threats In Our Bodies and Environment
Prof. Shabat, a bioorganic chemist, plans to develop the technology so that it amplifies signals millions and billions times stronger than they are. “We are developing a molecular system that amplifies certain events,” says Prof. Shabat. “That way we’ll be able to respond faster to medical, security and environmental threats. In effect, our device can amplify just about any chemical system that has a certain kind of reactivity.”
 
“It has the potential to help doctors diagnose diseases — those with biomarkers, and enzymatic activities that are compatible with our molecular probe,” says Prof. Shabat. “The long list includes a few kinds of cancer, as well, including prostate cancer. But it also has applications for testing for impurities in water. It has both biological and non-biological applications.”
A Track-and-Trace Solution
 
Prof. Shabat’s invention is a molecular sensor that acts in a solution. A chem
ist would add trace amounts of the test material from the field — a spoonful of contaminated drinking water, for example — into the solution and would simply see if the color of the solution changes. If so, the targeted material — the cancer, or explosive, or pollutant — is present.
 
As of now, Prof. Shabat’s is a unique solution. The prototype is ready, and Prof. Shabat plans to use it to “amplify” problems around the world to improve healthcare, safety, and security. Some of the research behind the new invention was done in collaboration with the Scripps Research Institute in San Diego.
 Details of Prof. Shabat's project appeared in a paper published in the journal Chemical Communication in 2008.

Story Source: The above story is reprinted from materials provided by Tel Aviv University.

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