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Developing Synergisers Of The Antimalarial Drug, Chloroquine, For The Treatment Of Chloroquine-resistant P. Falciparum.
Funder
National Health and Medical Research Council
Funding Amount
$243,000.00
Summary
Malaria is a debilitating parasitic disease that is responsible for the deaths of about two million children each year. As drugs, such as chloroquine, become increasingly useless due to the development of parasite resistance, there is an urgent need to understand the mode of action of and the molecular basis of resistance to existing antimalarials and to design affordable treatments that can replace chloroquine. It is known that some compounds, that have only poor antimalarial activity themselve ....Malaria is a debilitating parasitic disease that is responsible for the deaths of about two million children each year. As drugs, such as chloroquine, become increasingly useless due to the development of parasite resistance, there is an urgent need to understand the mode of action of and the molecular basis of resistance to existing antimalarials and to design affordable treatments that can replace chloroquine. It is known that some compounds, that have only poor antimalarial activity themselves, can synergise the action of chloroquine. This may involve the inhibition of the activity of proteins that directly or indirectly extrude chloroquine from its site of action in the parasite's digestive apparatus. Unfortunately, thechloroquine synergisers examined to date have been too toxic to be useful in vivo. In preliminary studies we have identified some compounds that would be suitable for use in malaria patients, including a widely used antimalarial drug, primaquine, that can synergise the activity of chloroquine against chloroquine-resistant parasites. We will attempt to understand the molecular basis of this interaction. This will allow us to define optimal combinations of chloroquine and a resistance-reversing quinoline for use treating malaria. This could extend the clinical life of this important antimalarial drug. The information obtained may also help to design novel antimalarial drugs.Read moreRead less
Cytosolic And Organellar TRNA Synthetases In Plasmodium Falciparum
Funder
National Health and Medical Research Council
Funding Amount
$424,262.00
Summary
Malaria is a major worldwide infectious disease. The disease kills around 2 million people every year, and current drugs are increasingly failing due to parasite drug resistance, creating an urgent demand for new drugs, that inhibit different targets. I will study a new class of parasite drug targets, the tRNA synthetase enzymes to find novel inhibitors. Compounds blocking these enzymes may lead to new drugs to combat malaria.