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Research breakthrough could lead to new treatment for malaria
Date:1/28/2010

This press release is available in French.

Malaria causes more than two million deaths each year, but an expert multinational team battling the global spread of drug-resistant parasites has made a breakthrough in the search for better treatment. Better understanding of the make-up of these parasites and the way they reproduce has enabled an international team, led by John Dalton, a biochemist in McGill's Institute of Parasitology, to identify a plan of attack for the development of urgently needed new treatments.

Malaria parasites live inside our red blood cells and feed on proteins, breaking them down so that they can use the proceeds (amino acids) as building blocks for their own proteins. When they have reached a sufficient size they divide and burst out of the red cell and enter another, repeating the process until severe disease or death occurs. Dalton and his colleagues found that certain "digestive enzymes" in the parasites enable them to undertake this process. Importantly, the researchers have also now determined the three-dimensional structures of two enzymes and demonstrated how drugs can be designed to disable the enzymes.

"By blocking the action of these critical parasite enzymes, we have shown that the parasites can no longer survive within the human red blood cell," Dalton explains. The discovery will be published in the Proceedings of the National Academy of Sciences, and is the result of collaboration including Australia's Queensland Institute of Medical Research, Monash University and the University of Western Sydney, Wroclaw University of Technology in Poland and the University of Virginia in the U.S. The team is putting their findings into action immediately and is already pursuing anti-malarial drug development.


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Contact: William Raillant-Clark
william.raillant-clark@mcgill.ca
514-398-2189
McGill University
Source:Eurekalert

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