Polysaccharide biosynthesis as a new drug target in Leishmania parasites

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Leishmania are protozoan parasites that cause a number of important diseases in humans, afflicting more than 12 million people worldwide. There are currently few drugs that target infectious disease causing stages of these parasites. We have recently shown that Leishmania parasites accumulate a highly unusual sugar polymer when they infect mammalian cells, which appears to be important for infectivity. In this proposal , we will investigate how this sugar polymer is made, identify enzymes involved in its synthesis and develop new chemical tools for generating highly specific inhibitors of Leishmania sugar biosynthesis. This project will provide new insights into processes that are essential for the survival and infectivity of an improtant group of human pathogens, and lead to the development of new classes of enzyme inhibitors with anti-parasite activity.