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Transcriptional Control Of Blood Vessel Development By Sox18
Funder
National Health and Medical Research Council
Funding Amount
$468,564.00
Summary
Blood vessels play an essential role in maintaining the supply of nutrients to every organ and tissue in the body. Improper development of blood vessels in the embryo can compromise survival of the embryo, and defects in the ability of blood vessels to grow, regenerate and adapt to change during adult life can be life-threatening. The growth of new blood vessels (angiogenesis) is also an important factor in the ability of solid tumours to grow during the progression of cancer. It is therefore of ....Blood vessels play an essential role in maintaining the supply of nutrients to every organ and tissue in the body. Improper development of blood vessels in the embryo can compromise survival of the embryo, and defects in the ability of blood vessels to grow, regenerate and adapt to change during adult life can be life-threatening. The growth of new blood vessels (angiogenesis) is also an important factor in the ability of solid tumours to grow during the progression of cancer. It is therefore of fundamental importance in the health sciences to gain an understanding of how blood vessels form and regenerate. As a result of our collaborative research efforts, we have discovered a gene, Sox18, that appears to regulate blood vessel development by controlling the formation and-or behaviour of endothelial cells, which line the blood vessels and make them impermeable. Our research so far indicates that MICE WITH DEFECTS IN SOX18 DIE FROM VASCULAR DEFECTS, underlining the importance of this gene. THIS PROJECT IS CONCERNED WITH FINDING OUT HOW SOX18 WORKS - exactly what goes wrong in mice lacking this gene, whether Sox18 can influence endothelial cell behaviour in cell culture, how Sox18 comes to be active in endothelial cells, what genes are switched on by Sox18, and what genes Sox18 co-operates with in its role in endothelial cells. The answers to these questions will not only provide fundamental basic information about how blood vessels development is controlled, but also sow the seeds for possible future therapies in which blood vessel development could be stimulated (eg in wound healing) or suppressed (eg in tumour progression) through pharmaceutical intervention.Read moreRead less
Erythroid Molecular Cascades Involving The Tyrosine Kinase Lyn
Funder
National Health and Medical Research Council
Funding Amount
$496,500.00
Summary
Mature red and white cells develope from hemopoietic stem cells in the adult bone marrow. The production of red blood cells is primarily controlled by the hormone erythropoietin (Epo). The availability of this hormone in a recombinant form has aided in the treatment of numerous forms of anaemia resulting from kidney failure, malignancies, and AIDS. Previously we had identified that the protein Lyn must be present inside primitive red blood cells for Epo to stimulate them to become mature functio ....Mature red and white cells develope from hemopoietic stem cells in the adult bone marrow. The production of red blood cells is primarily controlled by the hormone erythropoietin (Epo). The availability of this hormone in a recombinant form has aided in the treatment of numerous forms of anaemia resulting from kidney failure, malignancies, and AIDS. Previously we had identified that the protein Lyn must be present inside primitive red blood cells for Epo to stimulate them to become mature functional cells. Recently, we have demonstrated that mice lacking the Lyn gene develope major problems with their red blood cells. We have identified several molecules which interact with Lyn in red blood cells. We have shown that a molecule called Cbp is important for Epo function in individual red blood cells and now we plan to investigate its function in whole animals. We have shown that a new molecule called Arp is important for red blood cell development. This protein moves in and out of the nucleus (where DNA is stored) and may be important in the regulation of genes needed for red blood cells. The third gene (AFAPbeta) is also novel and is closely related to another called AFAP-110, which can exert effects on the structure of a cell. Since red blood cells have to shrink considerably during their development, the role of AFAPbeta on red blood cell structure will also be investigated. From these experiments we should develop a much better understanding of how the production of red blood cells is controlled and how diseases of red blood cells (such as anaemia) occur.Read moreRead less
EPIGENETIC REPROGRAMMING OF MALIGNANT BREAST CANCER
Funder
National Health and Medical Research Council
Funding Amount
$863,268.00
Summary
Poorly differentiated breast cancers are aggressive tumors, frequently resistant to chemotherapy and associated with high morbidity. Herein we propose the engineering of more selective therapeutic agents able to target the genes involved in cancer initiation and resistance to treatment. We aim to correct and reprogram the cancer cell genome in state that is similar to normal, not tumorigenic cells. This work will generate novel forms of treatment for cancers that are presently not curable.
Regulation Of Neural Progenitor Cell Self-renewal By The RNA-binding Protein ZFP36L1 During Development And Disease
Funder
National Health and Medical Research Council
Funding Amount
$345,401.00
Summary
The timely differentiation of neural stem cells is critical during development, and the unrestrained proliferation of neural stem cells in the adult can lead to deadly brain cancers such as glioma. At present our understanding of the key molecules that regulate neural stem cell behaviour during these processes remains limited. In this proposal we will investigate the molecular determinants underpinning neural stem cell biology, both within the developing brain, and within glioma.
Do Exposures Before Conception Influence The Risk Of Asthma In Offspring?
Funder
National Health and Medical Research Council
Funding Amount
$688,586.00
Summary
Asthma and poor lung function are major causes of public health issues. Emerging evidence suggests adverse exposures even before the conception of a child may cause these conditions. The proposed project is part of an international study across generations to identify these factors. This study will provide novel evidence to guide interventions and identify studies to advance this area further. These original findings will be of great importance both nationally and internationally.
Understanding And Overcoming Cardiovascular And Diabetes Inequalities In Indigenous Australians
Funder
National Health and Medical Research Council
Funding Amount
$707,370.00
Summary
Aboriginal and Torres Strait Islanders experience the highest rates of heart disease and diabetes of all Australians. The reasons for this large disparity is not yet fully understood. I propose to investigate the patterns, causes, complications and links between heart disease and diabetes in Indigenous populations to identify better ways of managing and preventing chronic disease in high risk communities.
Young Adult Myopia: Genetic And Environmental Associations
Funder
National Health and Medical Research Council
Funding Amount
$809,271.00
Summary
Myopia affects 80% of school leavers in the cities of East Asia, 45% of Asian Australian school leavers and is probably on the rise in European Australian adolescents. Increased levels of education and lack of time outdoors are known to increase the risk of myopia. We will examine 2,000 young adults to find the genes that interact with these risk factors. In addition to confirming when these risk factors are most important, identifying molecular pathways opens the avenue of new treatments.
Identifying Glaucoma Risk Variants In The Norfolk Island Genetic Isolate
Funder
National Health and Medical Research Council
Funding Amount
$658,447.00
Summary
Primary open angle glaucoma is the most common form of glaucoma. In this project we will focus on the identification of functional genetic variants influencing development of this disorder, using a powerful whole exome sequencing approach in a large multigenerational pedigree from the Norfolk Island population isolate. The identification of genes influencing glaucoma development would provide invaluable clues to aid in defining the pathophysiology of this common disease.
One of the current challenges in public health is to translate the progress from the Human Genome Project into reduced morbidity and mortality from disease. Once genetic defects are characterised, knowledge about the variability in severity of disease in mutation carriers, is important from a public health perspective. Hereditary Haemochromatosis (HH) is a common genetic disorder of iron overload that results in a wide spectrum of disease, varying from non-specific symptoms to severe damage to l ....One of the current challenges in public health is to translate the progress from the Human Genome Project into reduced morbidity and mortality from disease. Once genetic defects are characterised, knowledge about the variability in severity of disease in mutation carriers, is important from a public health perspective. Hereditary Haemochromatosis (HH) is a common genetic disorder of iron overload that results in a wide spectrum of disease, varying from non-specific symptoms to severe damage to liver, heart, pancreas and joints from iron deposition. It is easily treatable by regular blood donation, and population-based screening for HH has therefore been advocated. In this study we aim to address gaps in the existing data on HH regarding dietary and lifestyle factors that contribute to the variable clinical picture of HH. The study will be based on the Melbourne Collaborative Cohort Study, a cohort of 31,500 men and women who have been followed for approximately 10 years. Information on dietary and lifestyle factors was collected at initial enrollment, along with a blood specimen. We will test all non-Southern European participants (31,176) for the common HH mutations in the HFE gene and then select a subgroup of 1150 people, including all people with the main genetic defect as well as a comparison group, for further clinical followup. Participants will have genetic counselling and informed consent will be obtained. Participants will complete a short questionnaire and give a blood sample for measurement of iron overload, liver function, and other relevant blood tests, then undergo a brief clinical examination. Results of all tests will be given at a followup visit by genetic counsellor or physician. This study will provide important data on natural history of HH risk factors that influence variability in clinical presentation and the association of HFE mutations with chronic diseases and all cause mortality.Read moreRead less
Developmental Origins Of Adult Cardiovascular Disease: Vascular Health In The Raine Cohort
Funder
National Health and Medical Research Council
Funding Amount
$1,087,427.00
Summary
The Raine study is a unique long term experiment that has collected extensive pre-birth and childhood data in ~3000 young Australians, who are now 27 years old. We plan to measure the artery health of 1200 of these volunteers and to determine what factors, both before and after birth, influence the presence of early atherosclerosis in humans. This study will guide strategies aimed at early prevention of heart attacks and stroke in humans, by defining the major risk factors.