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Cytochrome P450-mediated Epoxides Of Polyunsaturated Fatty Acids That Regulate Cell Death And Survival
Funder
National Health and Medical Research Council
Funding Amount
$495,710.00
Summary
Omega-3 polyunsaturated fatty acids (PUFAs) decrease cancer risk in man whereas omega-6 PUFA, which are common in western diets, increase risk. In cells cytochrome P450 converts PUFAs to epoxides. Omega-6 epoxides stimulate growth of cells and tumours but we have found that epoxides of the omega-3 eicosapentaenoic acid inhibit cell growth. We will now evaluate the mechanisms of these effects, which could lead to new anticancer treatments, perhaps based on altered diet.
The Molecular Mechanism Of Ion-coupled Transport In The Brain
Funder
National Health and Medical Research Council
Funding Amount
$441,407.00
Summary
Cells in the brain communicate through chemical signals called neurotransmitters. Neurotransmitter transporters reside in the membranes of cells and are responsible for regulating levels of these chemicals in the brain. They play an important role in the normal function of the human brain but their dysfunction is responsible for many diseases including Alzheimer's disease and motor neuron disease. It is crucial to understand how these proteins work in both normal and disease states.
Astrocytic Glutamate Transporters: Molecular Characteristics Of Their Activity-dependent Localization And Targeting
Funder
National Health and Medical Research Council
Funding Amount
$558,189.00
Summary
Dysfunction of glutamate transport is implicated in the pathology of neurodegenerative conditions. Our aim is to understand how the molecules responsible for glutamate transport are organized on the cell surface and how their movement within cells regulates transporter activity. Advances of this type will indicate new pharmacological and molecular biological strategies for the management of brain disorders.
Metabotropic Glutamate Receptors: Pharmacological Studies Of Receptor Subtypes In Neuronal Injury.
Funder
National Health and Medical Research Council
Funding Amount
$145,770.00
Summary
Glutamate is the major transmitter of excitatory information in the mammalian brain. Disruption of glutamate-mediated signaling between brain cells results in high extracellular levels of glutamate which is toxic to neurones. A recently discovered family of signal transducers, the metabotropic glutamate receptors, has been found to be localized on neurones and is switched on by these toxic glutamate levels. The roles of these metabotropic glutamate receptors in neurotoxicity is essentially unexp ....Glutamate is the major transmitter of excitatory information in the mammalian brain. Disruption of glutamate-mediated signaling between brain cells results in high extracellular levels of glutamate which is toxic to neurones. A recently discovered family of signal transducers, the metabotropic glutamate receptors, has been found to be localized on neurones and is switched on by these toxic glutamate levels. The roles of these metabotropic glutamate receptors in neurotoxicity is essentially unexplored and is the topic under investigation in this project. How their activation affects cellular signaling switch on will be investigated to gain an understanding of the roles metabotropic glutamate receptors play in acute brain injury (eg stroke) and chronic neurodegenerative conditions (eg Huntington's chorea and Alzheimer's disease).Read moreRead less
Molecular Mechanism And Novel Activators Of Amino Acid And Calcium-sensing Class 3 G-protein Coupled Receptors
Funder
National Health and Medical Research Council
Funding Amount
$519,715.00
Summary
When we eat protein-containing foods, our bodies extract twenty different amino acids for growth and tissue regeneration. Broad-spectrum amino acid sensing receptors detect the increases in blood amino acid levels and respond by triggering the release of biochemical signals. This project will establish the molecular rules by which these receptors work and identify novel activators with potential therapeutic application for the control of growth, tissue regeneration and calcium metabolism.