Tuesday, 26 August 2008

Manchester Makes Protein Scanning Breakthrough

�Scientists at The University of Manchester have developed a new and fast method for making biological 'chips' - technology that could track to agile testing for serious diseases, fast detection of MRSA infections and rapid discovery of raw drugs.



Researchers working at the Manchester Interdisciplinary Biocentre (MIB) and The School of Chemistry experience unveiled a new technique for producing functional 'protein chips' in a paper in the Journal of the American Chemical Society (JACS), published online.



Protein chips - or 'protein arrays' as they are more commonly known - ar objects such as slides that have proteins attached to them and countenance important scientific data around the behaviour of proteins to be gathered.



Functional protein arrays could give scientists the ability to consort tests on tens of thousands of different proteins simultaneously, observing how they interact with cells, other proteins, DNA and drugs.



As proteins throne be situated and set precisely on a 'chip', it would be possible to scan large numbers of them at the same clock time but then isolate the data relating to case-by-case proteins.



These french-fried potatoes would allow for large amounts of data to be generated with the minimum use of materials - especially rare proteins that are but available in very small amounts.



The Manchester team of Dr Lu Shin Wong, Dr Jenny Thirlway and Prof Jason Micklefield say the expert challenges of attaching proteins in a reliable way have antecedently held gage the widespread application and development of protein chips.



Existing techniques for attaching proteins often results in them becoming fixed in random orientations, which can causal agency them to become damaged and inactive.



Current methods too require proteins to be purified offset - and this means that creating large and powerful protein arrays would be hugely costly in terms of time, men and money.



Now researchers at The University of Manchester say they have establish a reliable new means of attaching active proteins to a chip.



Biological chemists have engineered modified proteins with a special tag, which makes the protein attach to a control surface in a highly specified way and ensures it remains functional.



The attachment occurs in a single stair in precisely a few hours - unlike with existing techniques - and requires no prior chemical modification of the protein of involvement or extra chemical steps.



Prof Jason Micklefield from the School of Chemistry, said: "DNA french fries have revolutionised biological and medical scientific discipline. For many years scientists have tested to develop similar protein chips but technical difficulties associated with attaching big numbers of proteins to surfaces have prevented their widespread application.



"The method we have highly-developed could get profound applications in the diagnosis of disease, screening of new drugs and in the detection of bacteria, pollutants, toxins and other molecules."



Researchers from The University of Manchester ar currently working as contribution of a consortium of several universities on a �3.1 million project which is aiming to develop supposed 'nanoarrays'.



These would be much smaller than existing 'micro arrays' and would leave thousands more than protein samples to be placed on a single 'chip', reducing cost and vastly increasing the volume of data that could be at the same time collected.





This jut out, which involves the universities of Manchester, Sheffield, Nottingham and Glasgow, is being supported by Research Councils UK (RCUK), the umbrella body for academic research funding in the UK.



Source: Alex Waddington

University of Manchester



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