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Home BIOENGINEERING VIDEO

Bonnie Bassler: How bacteria "talk"

Bioengineer by Bioengineer
August 30, 2013
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In 2002, bearing her microscope on a microbe that lives in the gut of fish, Bonnie Bassler isolated an elusive molecule called AI-2, and uncovered the mechanism behind mysterious behavior called quorum sensing — or bacterial communication. She showed that bacterial chatter is hardly exceptional or anomolous behavior, as was once thought — and in fact, most bacteria do it, and most do it all the time. (She calls the signaling molecules “bacterial Esperanto.”)

The discovery shows how cell populations use chemical powwows to stage attacks, evade immune systems and forge slimy defenses called biofilms. For that, she’s won a MacArthur “genius” grant — and is giving new hope to frustrated pharmacos seeking new weapons against drug-resistant superbugs.
Bassler teaches molecular biology at Princeton, where she continues her years-long study of V. harveyi, one such social microbe that is mainly responsible for glow-in-the-dark sushi. She also teaches aerobics at the YMCA.
“She’s really the one who’s shown that this is something that all these bacteria are doing all the time. And if we want to understand them, we have to understand quorum sensing.”
Ned Wingreen, Princeton, on Nova ScienceNOW
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