Examination Of The Molecular Pharmacology Of Anthracyclines Induced Via Their Interaction With Iron
Funder
National Health and Medical Research Council
Funding Amount
$618,401.00
Summary
Anthracyclines are highly effective anti-cancer drugs, but their use is limited by toxic effects on the heart. This is thought to be due to these drugs directly binding iron (Fe). Indeed, we showed that anthracyclines induced marked changes in the way heart cells utilise Fe (DR1-3, 38; Mol. Pharmacol. 2002, 2003, 2004, 2005). We were the first to show that anthracyclines prevent Fe release from the criticial Fe storage protein ferritin. This prevents the use of Fe for vital processes eg. DNA and ....Anthracyclines are highly effective anti-cancer drugs, but their use is limited by toxic effects on the heart. This is thought to be due to these drugs directly binding iron (Fe). Indeed, we showed that anthracyclines induced marked changes in the way heart cells utilise Fe (DR1-3, 38; Mol. Pharmacol. 2002, 2003, 2004, 2005). We were the first to show that anthracyclines prevent Fe release from the criticial Fe storage protein ferritin. This prevents the use of Fe for vital processes eg. DNA and haem synthesis. Hence, this effect probably contributes to the cytotoxic activity of anthracyclines on the heart. We showed that novel drugs developed in my lab that bind Fe called chelators show high activity in animals (DR4) and prevent anthracycline-mediated Fe accumulation in ferritin. Importantly, Fe chelators have been shown to inhibit anthracycline-mediated cardiotoxicity. Indeed, the clinically used cardioprotective agent, ICRF-187, is actually an Fe chelator (5, DR6). However, ICRF-187 is not totally successful in terms of its cardioprotective effects and can cause myelosuppression (5, DR6). While the clinically used chelator, desferrioxamine (DFO), can prevent anthracycline-mediated cardiotoxicity, its poor membrane permeability limits its effectiveness. Our chelators are highly permeable and overcome the disadvantages of DFO (DR4). Thus, they are vital to examine for preventing anthracycline-mediated cardiotoxicity. In this proposal we will examine the changes in Fe metabolism induced by anthracyclines and test the hypothesis that novel Fe chelators may prevent the cardiotoxicity of these agents. We also aim to be the first to assess if preparation of anthracyclines which cannot bind iron prevents their cardiotoxicity. This will be done by preparing metal complexes of these drugs which prevent Fe-binding eg. anthracycline-zinc complexes. These studies are important for the development of less cardiotoxic forms of these very useful anti-tumour agents.Read moreRead less
Efficacy profiling innovation in novel pain therapeutics discovery. The purpose of this project is to bring innovation into the methods used for selecting novel compounds with high potential for progression into development as highly effective pain-killers for improving the relief of chronic pain. This will result in new pain-killers that are highly effective without producing unpleasant side-effects.
Pharmacology Of Potential Anti-Tumour Agents: Iron Chelators Of The BpT Class
Funder
National Health and Medical Research Council
Funding Amount
$585,455.00
Summary
Pharmacology of Potential Anti-Tumour Agents: Iron Chelators of the BpT Class Cancer cells have a high iron requirement for DNA synthesis and many clinical trials showed Fe chelators are effective anti-cancer drugs. Their potential to act as anti-tumour agents has been confirmed by the entrance of Triapine into widespread NCI clinical trials. In this NHMRC Renewal, we will perform pharmacological and preclinical studies to promote the development of BpT chelators as novel anti-tumour agents.
Industrial Transformation Research Hubs - Grant ID: IH220100017
Funder
Australian Research Council
Funding Amount
$4,808,669.00
Summary
ARC Research Hub for Advanced Manufacture of Targeted Radiopharmaceuticals. Radiopharmaceuticals are emerging as next generation medical technologies for addressing complex health challenges, and their manufacture offers significant economic benefit to Australia. The ARC Research Hub for Advanced Manufacture of Targeted Radiopharmaceuticals (AMTAR) aims to establish a manufacturing platform for new medical technologies combining innovations in biotechnology and pharmaceutical science. The progra ....ARC Research Hub for Advanced Manufacture of Targeted Radiopharmaceuticals. Radiopharmaceuticals are emerging as next generation medical technologies for addressing complex health challenges, and their manufacture offers significant economic benefit to Australia. The ARC Research Hub for Advanced Manufacture of Targeted Radiopharmaceuticals (AMTAR) aims to establish a manufacturing platform for new medical technologies combining innovations in biotechnology and pharmaceutical science. The program addresses industry-led challenges for translation of biologics as molecular radiopharmaceuticals, building capacity in biomanufacturing, radiobiology and radiochemistry. The program establishes a dedicated manufacturing pipeline, future-proofing production and securing supply chain of next generation medical technologies.Read moreRead less
Discovery and characterisation of novel spider-venom peptides targeting the human sodium ion channel Nav1.7. Drugs that selectively block the human sodium ion channel Nav1.7 are likely to be powerful analgesics for treating a wide variety of pain conditions. However, it has proved difficult to obtain selective blockers of this channel. The aim of this project is to determine whether spider-venoms might provide a source of highly selective Nav1.7 blockers.
Industrial Transformation Training Centres - Grant ID: IC180100021
Funder
Australian Research Council
Funding Amount
$4,163,359.00
Summary
ARC Training Centre for the Development of Tools for Fragment Based Design. The ARC Training Centre for the Development of Tools for Fragment Based Design aims to inspire the next generation of drug discovery research leaders. It plans to provide direct experience with industry partners, training and master classes in early stage drug-discovery from industry experts. The Centre is expected to accelerate research translation and industry engagement by providing an efficient strategy for the scree ....ARC Training Centre for the Development of Tools for Fragment Based Design. The ARC Training Centre for the Development of Tools for Fragment Based Design aims to inspire the next generation of drug discovery research leaders. It plans to provide direct experience with industry partners, training and master classes in early stage drug-discovery from industry experts. The Centre is expected to accelerate research translation and industry engagement by providing an efficient strategy for the screening of a biological target and early medicinal chemistry for optimisation. The expected outcome of the Centre is to equip the trainees with the skills to make key contributions to the sustainability and growth of the sector and to provide significant capacity to address global challenges for 21st century pharmaceutical innovation.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140101770
Funder
Australian Research Council
Funding Amount
$327,841.00
Summary
Secularism and Philosophy: The Challenge of Spinozism. With the resurgence of religious conflict throughout the world, the question of secularism has acquired renewed importance. Nowhere has the plausibility of a secular worldview been more rigorously debated than within the history of philosophy, and no philosopher has aroused more controversy on this subject than Benedict de Spinoza (1632-1677). This project will result in the first history of Spinozism's pivotal role in the history of secular ....Secularism and Philosophy: The Challenge of Spinozism. With the resurgence of religious conflict throughout the world, the question of secularism has acquired renewed importance. Nowhere has the plausibility of a secular worldview been more rigorously debated than within the history of philosophy, and no philosopher has aroused more controversy on this subject than Benedict de Spinoza (1632-1677). This project will result in the first history of Spinozism's pivotal role in the history of secularism, focusing on three distinct episodes of philosophical conflict generated by Spinoza's thought from the late eighteenth century to the present. The study will make clear that secularism is not simply a social and political phenomenon, but a philosophical conundrum, thus far irresolvable.Read moreRead less
Plant use at the dawn of agriculture in central Anatolia. The project will increase collaboration with researchers in the UK, and Turkish archaeological authorities. It will refine our understanding of the process, rate and direction of agricultural origins in Western Asia and improve Australia's profile in origins of agriculture research. It will increase Australia's knowledge base about other regions and help to consolidate and promote archaeobotany/archaeological science in Australia's resear ....Plant use at the dawn of agriculture in central Anatolia. The project will increase collaboration with researchers in the UK, and Turkish archaeological authorities. It will refine our understanding of the process, rate and direction of agricultural origins in Western Asia and improve Australia's profile in origins of agriculture research. It will increase Australia's knowledge base about other regions and help to consolidate and promote archaeobotany/archaeological science in Australia's research community.Read moreRead less
Pro-Fluorescent Aryl Nitroxides: New Probes for Polymer Lifetime and Kinetics Research. Internal aryl rings present in novel probes developed for this project impart fluorescence which is efficiently and internally quenched by the presence of a paramagnetic nitroxide group. Scavenging of radicals by the nitroxide however "switches on" the fluorescence and this enables powerful new fluorescence-based detection levels for the technique of nitroxide free radical scavenging. Such sensitivity is a ....Pro-Fluorescent Aryl Nitroxides: New Probes for Polymer Lifetime and Kinetics Research. Internal aryl rings present in novel probes developed for this project impart fluorescence which is efficiently and internally quenched by the presence of a paramagnetic nitroxide group. Scavenging of radicals by the nitroxide however "switches on" the fluorescence and this enables powerful new fluorescence-based detection levels for the technique of nitroxide free radical scavenging. Such sensitivity is applicable to polymerization kinetics studies, as well as providing new means for the determination of materials lifetimes. The development of pro-fluorescent markers as indicators for polymer degradation would be a significant outcome for materials where component failure has a major negative impact.Read moreRead less