As bactérias se comunicam entre si: Bonnie Bassler diz como

segunda-feira, outubro 24, 2011

Fermilab Lecture Series presents:

How Bacteria Talk to Each Other

Dr. Bonnie Bassler, Princeton University

Friday, November 11, 2011 @ 8 p.m.

Tickets - $7

Bacteria communicate with one another using small chemical molecules that they release into the environment. These molecules travel from cell to cell and the bacteria have receptors on their surfaces that allow them to detect and respond to the build up of the molecules. This process of cell-to-cell communication in bacteria is called “Quorum Sensing” and it allows bacteria to synchronize behavior on a population-wide scale. Bacterial behaviors controlled by quorum sensing are usually ones that are unproductive when undertaken by an individual bacterium acting alone but become effective when undertaken in unison by the group. For example, quorum sensing controls virulence, sporulation, and the exchange of DNA. Thus, quorum sensing is a mechanism that allows bacteria to function as multi-cellular organisms. Current biomedical research is focused on the development of novel anti-bacterial therapies aimed at interfering with quorum sensing. Such therapies could be used to control bacterial pathogenicity.

Bonnie Bassler is a member of the National Academy of Sciences and the American Academy of Arts and Sciences. She is a Howard Hughes Medical Institute Investigator and the Squibb Professor of Molecular Biology at Princeton University. Bassler received a B.S. in Biochemistry from the University of California at Davis, and a Ph.D. in Biochemistry from the Johns Hopkins University. She performed postdoctoral work in Genetics at the Agouron Institute, and she joined the Princeton faculty in 1994. The research in her laboratory focuses on the molecular mechanisms that bacteria use for intercellular communication. This process is called quorum sensing. Bassler’s research is paving the way to the development of novel therapies for combating bacteria by disrupting quorum-sensing-mediated communication. At Princeton, Dr. Bassler teaches both undergraduate and graduate courses. Dr. Bassler directed the Molecular Biology Graduate Program from 2002-2008 and she currently chairs Princeton University’s Council on Science and Technology which has revamped the science curriculum for humanists. Bassler is a passionate advocate for diversity in the sciences and she is actively involved in and committed to educating lay people in science. Dr. Bassler was awarded a MacArthur Foundation Fellowship in 2002. She was elected to the American Academy of Microbiology in 2002 and made a fellow of the American Association for the Advancement of Science in 2004. She was given the 2003 Theobald Smith Society Waksman Award and she is the 2006 recipient of the American Society for Microbiology’s Eli Lilly Investigator Award for fundamental contributions to microbiological research. In 2008, Bassler was given Princeton University’s President’s Award for Distinguished Teaching. She is the 2009 recipient of the Wiley Prize in Biomedical Science for her paradigm-changing scientific research. She is the 2011 recipient of the National Academies’ Richard Lounsbery Award. Bassler is the President of the American Society for Microbiology, an editor for Molecular Microbiology, mBio, and Chief Editor of Annual Reviews of Genetics. She is an associate editor for Cell, Proceedings of the National Academy of Sciences, Journal of Bacteriology, and other journals. Among other duties, she serves on the National Academies Board on Life Sciences, the Howard Hughes Medical Institute Science Education Committee, and Discovery Communications’ Science Channel Scientific Advisory Board. She sits on the Scientific Advisory Boards of Cubist Pharmaceuticals and Pfizer Global Research. She serves on oversight, grant, fellowship, and award panels for the National Academies of Sciences, National Institutes of Health, National Science Foundation, American Society for Microbiology, American Academy of Microbiology, Keck Foundation, Burroughs Wellcome Trust, Jane Coffin Childs Fund, MIT Whitehead Institute, and the Max Planck Society.



Pode o mero acaso, a fortuita necessidade explicar a informação complexa especificada desta comunicação bateriana? Repare na linguagem teleológica empregada na comunicação do Fermilab. Ué, mas Darwin não tinha acabado de uma vez por todas com a teleologia em biologia? Nada mais falso! É preciso ser mais céticos com as especulações transformistas de Darwin!!!