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Scientists take a step towards developing better vaccines for bluetongue
Date:8/1/2011

Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) have taken a step towards producing better vaccines against Bluetongue an important disease of livestock - after successfully assembling the virus outside a cell. This research, published today (1 August 2011) in the journal Proceedings of the National Academy of Sciences, could provide scientists with the tools to develop vaccines with useful new properties.

Professor Polly Roy of London School of Hygiene and Tropical Medicine, who led the team, explains "We've developed the tools and provided the instruction manual for developing new, more effective Bluetongue vaccines. This will not only be useful for combating Bluetongue but will provide insights into fundamental virus assembly that will be useful for producing vaccines for other viruses."

Better vaccines will be important to help combat the threat that Bluetongue poses to livestock farming in the UK and abroad. Bluetongue is a viral disease of cows and sheep that is transmitted by biting midges. Historically it has mainly affected African farms, but since 1998 the disease has been spreading across Europe. In 2007 one strain of the disease reached as far as the east coast of the UK. The disease is economically devastating and kills up to 70% of the sheep it infects.

Professor Roy continues "Bluetongue is an important virus to study because it poses such a threat to livestock farming, but it presents some considerable scientific challenges. By virus standards Bluetongue is quite architecturally complex and it has a relatively difficult genome to work with, so assembling it in a test tube was a significant challenge. No one had been able to get such a complicated virus to assemble outside a cell before."

Professor Roy and her team synthesised each of the virus's gene and protein building blocks separately and then combined them in the right order in order to produce a functiona
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Contact: Mike Davies
mike.davies@bbsrc.ac.uk
44-179-341-4694
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

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