As bactérias 'falam' entre si: sinal de design inteligente???

sábado, abril 11, 2009

TED Talks

Bonnie Bassler studies how bacteria can communicate with one another, through chemical signals, to act as a unit. Her work could pave the way for new, more potent medicine.

Why you should listen to her:

Molecular Biologist

In 2002, bearing her microscope on a microbe that lives in the gut of fish, Bonnie Bassler uncovered an elusive molecule called AI-2. Doing so, she vindicated the long-ridiculed idea that bacteria communicate -- through a process called quorum sensing. (Bassler calls the signals "bacterial Esperanto," and they’re the secret behind some fascinating behavior.)

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

Video em inglês aqui.


Página de Bonnie Bassler - Universidade Princeton.



Já destacamos aqui neste blog que a Biologia do século 21 é uma ciência de informação complexa especificada. É preciso explicar isso teoricamente. O neodarwinismo não explica e cientificamente é uma teoria morta desde anos 1970s.

Bactéria se 'comunicando entre si'? Acaso, necessidade ou sinal de Design Inteligente???