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New insight in nerve cell communication
Date:12/22/2009

Communication between nerve cells is vital for our bodies to function. Part of this communication happens through vesicles containing signalling molecules called neurotransmitters. The vesicle fuses with the nerve cell membrane; the neurotransmitters are released and quickly recorded by the next nerve cell. It is crucial that new vesicles constantly are produced for the nerve cell communication continuously to take place. If parts of this communication do not work, it leads to nerve pain like phantom pain following amputation.

New discoveries on a nanoscale

- In patients with nerve pain, part of the pathological picture is a defect in a protein domain we call BAR. We have studied how BAR binds to small membrane vesicles of different size. We expect that the new knowledge can be used to combat nerve pain in the future, explains Associate Professor Dimitrios Stamou, Bio-Nanotechnology Laboratory, Nano-Science Center and the Department of Neuroscience and Pharmacology. Dimitrios Stamou has led the work.

- We have used nanotechnology techniques, which give us the unique opportunity to study the binding of proteins to individual vesicles. Earlier studies have been performed in solutions where you measure a large number of vesicles and proteins at a time. This gives an average value of binding and "masks out" a large number of important information that we can retrieve by measurements on single vesicles, says Dimitrios Stamou.

Error in communication

More and more studies this study included, show that the curvature of the membrane is absolutely central to the binding of proteins to cell membranes the greater the curvature, the greater the binding. This also applies to nerve cells in the brain. It therefore provides an important insight for the overall understanding of how nerve cells communicate with each other and for treating diseases where the communication has failed.

- To our great surpri
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Contact: Dimitrios Stamou
stamou@nano.ku.dk
454-116-0468
University of Copenhagen
Source:Eurekalert  

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