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Chemical and Biochemical Characterisation of Novel Iron Chelators with Therapeutic Potential. Iron is essential for life, but iron-overload is a potentially fatal condition. There is no natural mechanism to excrete iron in humans, so patients suffering from iron-overload disorders are treated with the chelator Desferal to enable iron excretion typically from an early age. Desferal is orally ineffective and must be given by subcutaneous infusion (12-24h, 5-6 days/week) resulting in poor patient c ....Chemical and Biochemical Characterisation of Novel Iron Chelators with Therapeutic Potential. Iron is essential for life, but iron-overload is a potentially fatal condition. There is no natural mechanism to excrete iron in humans, so patients suffering from iron-overload disorders are treated with the chelator Desferal to enable iron excretion typically from an early age. Desferal is orally ineffective and must be given by subcutaneous infusion (12-24h, 5-6 days/week) resulting in poor patient compliance. We will conduct critical chemical and biological experiments with a new series of potentially orally active iron chelators identified in our lab. The results from this project will be vital for the development of these compounds as pharmaceuticals.Read moreRead less
Transfer ribonucleic acid (tRNA) synthetases as drug targets in Plasmodium falciparum. 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. The Fellow will study a new class of parasite drug targets, the transfer ribonucleic acid (tRNA) synthetase enzymes to find novel inhibitors. Compounds blocking ....Transfer ribonucleic acid (tRNA) synthetases as drug targets in Plasmodium falciparum. 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. The Fellow will study a new class of parasite drug targets, the transfer ribonucleic acid (tRNA) synthetase enzymes to find novel inhibitors. Compounds blocking these enzymes may lead to new drugs to combat malaria.Read moreRead less
Chemical and Biochemical Characterisation of Novel Iron Chelators with Therapeutic Potential. Resistance by cancers to established chemotherapeutics is a growing problem in the community and one that demands the development of new strategies. Chelators that target the essential element iron within cancer cells represent a novel and promising approach to this problem. The Chief Investigators represent a unique combination of expertise in coordination chemistry and the biochemistry of iron chelati ....Chemical and Biochemical Characterisation of Novel Iron Chelators with Therapeutic Potential. Resistance by cancers to established chemotherapeutics is a growing problem in the community and one that demands the development of new strategies. Chelators that target the essential element iron within cancer cells represent a novel and promising approach to this problem. The Chief Investigators represent a unique combination of expertise in coordination chemistry and the biochemistry of iron chelation. They have discovered and characterised new chelators that show marked anticancer activity, and act by a new mechanism that overcomes problems of resistance. In this project they will pursue a course that will lead to a greater understanding of how these compounds work with the outcome that new effective anticancer drugs may emerge.Read moreRead less
Mannosyl transfer processes in leishmania and mycobacteria. The human diseases leishmaniasis and tuberculosis are caused by infectious microorganisms. We will target pathways to the biosynthesis and degradation of parasite-specific mannose containing metabolites that play essential roles in the ability of these pathogens to cause disease. We will develop new ways to study these pathways, and will synthesize novel substrates and inhibitors that will allow the development of antituberculosis and a ....Mannosyl transfer processes in leishmania and mycobacteria. The human diseases leishmaniasis and tuberculosis are caused by infectious microorganisms. We will target pathways to the biosynthesis and degradation of parasite-specific mannose containing metabolites that play essential roles in the ability of these pathogens to cause disease. We will develop new ways to study these pathways, and will synthesize novel substrates and inhibitors that will allow the development of antituberculosis and antileishmanial drugs. This project will contribute to our national competitiveness in the newly emerging area of chemical biology.Read moreRead less
Mannose metabolism in pathogenic microorganisms. Current treatments for tuberculosis and leishmaniasis are failing due to chronic underinvestment by the private sector and public agencies over many decades. The causative agents, the microorganisms Leishmania spp and Mycobacterium tuberculosis, respectively, use sugar processing pathways that differ from humans, and thus represent targets for new drugs. We will study two related sugar-processing biochemical pathways in these organisms. We will de ....Mannose metabolism in pathogenic microorganisms. Current treatments for tuberculosis and leishmaniasis are failing due to chronic underinvestment by the private sector and public agencies over many decades. The causative agents, the microorganisms Leishmania spp and Mycobacterium tuberculosis, respectively, use sugar processing pathways that differ from humans, and thus represent targets for new drugs. We will study two related sugar-processing biochemical pathways in these organisms. We will develop new ways to measure enzyme activity using mass spectrometry, and new reagents to clone several biosynthetic enzymes. Our work will lay a foundation for new antibiotics to combat these insidious diseases, and will foster Australian expertise in chemical biology and innovative basic science.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0561041
Funder
Australian Research Council
Funding Amount
$347,358.00
Summary
A New Generation Biosensor and Fluorescence Facility for Proteomics. The complete DNA sequence (the genome) is now known for many organisms and advances are being made to identify the complement of messenger RNA (the transcriptome) and the resultant collection of proteins (the proteome). The genome is largely fixed while the transcriptome and proteome differ between cell types in an organism and constantly vary to adapt the cell to changing conditions. The mediators of these variations are prote ....A New Generation Biosensor and Fluorescence Facility for Proteomics. The complete DNA sequence (the genome) is now known for many organisms and advances are being made to identify the complement of messenger RNA (the transcriptome) and the resultant collection of proteins (the proteome). The genome is largely fixed while the transcriptome and proteome differ between cell types in an organism and constantly vary to adapt the cell to changing conditions. The mediators of these variations are proteins, interacting with each other and with signal molecules. The next frontier in molecular biology is to identify and quantify these protein interactions. Our two institutions have a very large cohort of biologists whose research on proteins would be greatly facilitated by the Biacore 3000 and the ISS K2.Read moreRead less
Global genetic regulation of carbon metabolism in filamentous fungi. Fungi are of great importance in medicine, agriculture and industry. They are used extensively for food, antibiotic and chemical production and, increasingly, for generating cheap substrates for bioethanol. However many are serious pathogens of plants and humans. Understanding how fungi control their metabolism is of fundamental importance for their more effective use or control. This project takes advantage of a fungus that is ....Global genetic regulation of carbon metabolism in filamentous fungi. Fungi are of great importance in medicine, agriculture and industry. They are used extensively for food, antibiotic and chemical production and, increasingly, for generating cheap substrates for bioethanol. However many are serious pathogens of plants and humans. Understanding how fungi control their metabolism is of fundamental importance for their more effective use or control. This project takes advantage of a fungus that is easily studied in the laboratory by advanced genetic techniques to identify the ways in which genes are turned on and off in response to changes in the nutrients available. By comparing DNA sequences the results are readily applied to fungi of economic importance.Read moreRead less
Chemical tools for the study of mycobacterial glycolipid biosynthesis. Mycobacteria are responsible for human morbidity and mortality on a immense scale. The cell wall structure of these bacteria is extremely complex and offers many novel therapeutic opportunities. In this proposal we will use a synergetic interplay of chemistry, biochemistry and microbiology to study the biosynthesis of essential cell wall molecules conserved across all mycobacteria, the phosphatidylinositol mannosides. Substr ....Chemical tools for the study of mycobacterial glycolipid biosynthesis. Mycobacteria are responsible for human morbidity and mortality on a immense scale. The cell wall structure of these bacteria is extremely complex and offers many novel therapeutic opportunities. In this proposal we will use a synergetic interplay of chemistry, biochemistry and microbiology to study the biosynthesis of essential cell wall molecules conserved across all mycobacteria, the phosphatidylinositol mannosides. Substrates and inhibitors will be prepared and studied using novel biochemical and microbiological methods. This project will enhance our understanding of cell wall synthesis in mycobacteria and will lay the ground work for the discovery of novel antibiotics.Read moreRead less
Characterisation of the oxygen-sensing asparaginyl hydroxylase, FIH-1, and hydroxylase-specific antagonists. This research will provide fundamental information on how cells and whole organisms can sense and respond accordingly to oxygen deficiency. This information is fundamental for our understanding of embryo development and adult life in different environments, and central to the diagnosis and treatment of diseases such as stroke, cardiovascular disease, and cancer. This research will contrib ....Characterisation of the oxygen-sensing asparaginyl hydroxylase, FIH-1, and hydroxylase-specific antagonists. This research will provide fundamental information on how cells and whole organisms can sense and respond accordingly to oxygen deficiency. This information is fundamental for our understanding of embryo development and adult life in different environments, and central to the diagnosis and treatment of diseases such as stroke, cardiovascular disease, and cancer. This research will contribute to our basic knowledge of these processes, provide invaluable information about the specific genes and proteins involved, and provide direct information about the therapeutic potential of specific drugs or inhibitors designed to target this oxygen response in human disease.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0237729
Funder
Australian Research Council
Funding Amount
$735,000.00
Summary
A proteomics facility for Queensland researchers. The successful completion of sequencing of the genomes of many organisms, including man, has thrown emphasis back on the identification of proteins involved in the complex events that sustain cellular life. Our aim is to set up a world-class facility for proteomics research which will allow a large cohort of scientists at several institutions to identify individual proteins in vanishingly small samples of very complex mixtures. This facility wi ....A proteomics facility for Queensland researchers. The successful completion of sequencing of the genomes of many organisms, including man, has thrown emphasis back on the identification of proteins involved in the complex events that sustain cellular life. Our aim is to set up a world-class facility for proteomics research which will allow a large cohort of scientists at several institutions to identify individual proteins in vanishingly small samples of very complex mixtures. This facility will enable investigation of the control of gene expression, the intricate organisation of proteins within cells, and proteins which are potential drug targets. This equipment is an essential resource for Queensland research groups.Read moreRead less