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Life under the laser
Date:8/28/2008

nt drug molecules can be detected as they glow under the laser beam of a highly sensitive microscope. This allows their binding to the receptor to be followed for the first time in real time at the single molecule level.

Leading the project, Professor Steve Hill in the School of Biomedical Sciences said: "These microdomains are so tiny you could fit five million on them on a full stop. There are 10,000 receptors on each cell, and we are able to follow how single drug molecules bind to individual receptors in these specialised microdomains.

"What makes this single molecule laser technique unique is that we are looking at them in real time on a living cell. Other techniques that investigate how drugs bind to their receptors require many millions of cells to get a big enough signal and this normally involves destroying the cells in the process"

The researchers will be using donated blood as a source of A3-receptors in specialised human blood cells (neutrophils) that have important roles during inflammation.

Different types of adenosine receptors are found all over the body and can exist in different areas of the cell membrane and have different properties. Scientists hope that eventually the new technology could also be used to unlock the secrets of the role they play in a whole host of human diseases.

The fluorescent molecules developed as part of the research project will also be useful in drug screening programmes and The University of Nottingham will be making these fluorescent drugs available to the wider scientific community through its links with its spin-out company CellAura Technologies Ltd.


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Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
01-159-515-793
University of Nottingham
Source:Eurekalert

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