Date |
Do, 26.09.2013 - Do, 26.09.2013 |
Time |
10.15 |
Speaker |
Giovanni Longo, Laboratory of the Physics of Living Matter LPMV, EPFL, Lausanne |
Location |
Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern |
Program |
The importance of the characterization of movement in biological samples ranges from the fields of biology and microbiology to pharmaceuticals and drug development. For instance, the movement of living systems can deliver useful information regarding the metabolism of the specimen under investigation and can be used to define their response to external stimuli. In this presentation I will show how nanomechanical sensors can be used to characterize the nano-sized fluctuations of biologically-interesting specimens. I will discuss the metabolism-related movements of different bacterial species, of yeasts and fungi and of plant and mammalian cells when exposed to various external stimuli. For instance I will show how bacteria react to antibiotics and how nanomechanical sensors can be used as extremely fast tools (minutes, compared to hours or days) to characterize bacterial resistances. Furthermore I will discuss how this system can be applied to the study of conformational changes in proteins and protein complexes. These studies have defined how this new diagnostic tool can be used to characterize biological samples and how this information can be used to understand better their metabolic pathways. The speed and sensitivity of the technique will have a massive impact, with applications in general and molecular biology, microbiology, drug development and medicine. Its versatility allows also foreseeing its possible future use to identify and characterize life in hostile environments. |
Download |
(75 KB) |
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(75 KB) |
Link |
www.iap.unibe.ch |
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