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Kallikrein Gene Variants In Prostate Cancer: Analysis Of Gene Regulation And Diagnostic/Prognostic Use
Funder
National Health and Medical Research Council
Funding Amount
$486,801.00
Summary
Prostate cancer is the most common male cancer in Australia. However, early detection through screening programs has proven challenging, and about 30% of the 10,000 new cases diagnosed annually already have advanced disease. Hence, there is a fundamental need for increased basic research in prostate cancer etiology (cause) and tumour biology, and a critical requirement for methods that will assist in earlier detection of the disease and predict progression. A family of proteins called kallikrein ....Prostate cancer is the most common male cancer in Australia. However, early detection through screening programs has proven challenging, and about 30% of the 10,000 new cases diagnosed annually already have advanced disease. Hence, there is a fundamental need for increased basic research in prostate cancer etiology (cause) and tumour biology, and a critical requirement for methods that will assist in earlier detection of the disease and predict progression. A family of proteins called kallikreins (including prostate specific antigen, PSA) are often associated with clinical features of prostate cancer. We will characterise genetic variants (polymorphisms) in kallikrein genes that are consistently over-produced in prostate cancer, and determine whether they cause more protein to be produced in cells grown in the laboratory and in tumour tissue, and-or give rise to different expression products or splice variants. We will use bioinformatics (computer programs) to characterise published kallikrein gene sequences and to examine them for genetic variants that might be related to changes in gene expression or to splice variants. We will then use a case-control study, involving 1200 men with prostate cancer and 1200 healthy men, to determine whether these gene variants are associated with an increased risk of prostate cancer or with clinical aspects of the disease. Finally, we will examine the functional significance of the gene variants. This project represents an important and novel combination of molecular biology with the study of clinical disease at the population level, in the relatively new field of molecular epidemiology. It will clarify the role of kallikrein gene variants in prostate cancer risk and progression. The technologies may ultimately prove useful clinically for diagnosis of prostate cancer or for monitoring of treatment and prognosis, and hopefully will assist in clinical decision-making.Read moreRead less
Identification Of Novel Genes Influencing Development Of Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$558,920.00
Summary
Type 2 diabetes is usually associated with obesity and is often part of a wider disturbance affecting an individual's energy metabolism. The number of affected people with type 2 diabetes has trebled since 1981 in Australia and is still increasing. Apart from individual suffering, this presents a major public health burden for the country (approx $3 billion annually). Currently available lifestyle based and pharmaceutical therapies are inadequate to control the increasing numbers of affected ind ....Type 2 diabetes is usually associated with obesity and is often part of a wider disturbance affecting an individual's energy metabolism. The number of affected people with type 2 diabetes has trebled since 1981 in Australia and is still increasing. Apart from individual suffering, this presents a major public health burden for the country (approx $3 billion annually). Currently available lifestyle based and pharmaceutical therapies are inadequate to control the increasing numbers of affected individuals. Unfortunately the cause of disease is poorly understood, although genetic factors are known to be important, in other words it runs in the family. This project proposes to identify some of these factors (genes) and how they contribute to the disease. Using molecular flags on the DNA (like DNA fingerprinting) we have previously found that a small region on chromosome 12 is likely to carry one or more of these disease genes. But there are over 100 genes in the region. To help choose the most likely candidates first for testing, we have developed an automated computer database searching program ranked the genes based on what is already known about them. We have also taken a large number of physiological measures in a large group of people. Some of these measures are controlled by the same chromosome 12 region - thus to improve our chances of finding the genes quickly we will look at those that change the most between people with diabetes and people without diabetes. In this project we shall investigate the 20 genes most likely affect diabetes based on changes in physiological measures and what is already known about them. A successful finding means we will know more about the mechanism of disease development and be able to better develop new therapies for treatment and prevention. If none of these genes are the culprit, we would continue examination of the next set of genes likely to be involved and so on until we are successful.Read moreRead less
Gestational diabetes is an important medical condition. We plan to investigate two subgroups of women with gestational diabetes. Firstly, women who have diabetes antibodies in pregnancy. Secondly, women who have a mild form of diabetes caused by a single gene mutation, who may be first identified during pregnancy. Correct identification of these subgroups of women is important for immediate and long-term management of both the mother and her fetus.
I am a nutritional scientist with a research focus on gastrointestinal function and energy intake regulation in humans. The aim of my research is to understand (1) how any changes in gut function in obesity derail the appetite-regulatory and, thus, reinforce weight gain, ans (2) the role of gut function in the pathophysiology of digestive symptoms in patients with functional dyspepsia.
Elucidating Genetic Mechanisms Responsible For Familial Hyperaldosteronism Type II
Funder
National Health and Medical Research Council
Funding Amount
$424,812.00
Summary
Primary aldosteronism (PAL) is the commonest specifically treatable and potentially curable form of hypertension (high blood pressure), a common disease, expensive to treat, with serious morbidity and mortality. This project will use cutting edge technology to gain new knowledge concerning how genes regulate the body's production of aldosterone (salt hormone), which will help us understand how PAL develops and how common it is, and could lead to better approaches to diagnosis and treatment.
A Solution To The Parathyroid Gland Secretion Problem
Funder
National Health and Medical Research Council
Funding Amount
$508,003.00
Summary
Parathyroid hormone is the master hormone regulator of whole body calcium metabolism and a powerful new treatment for osteoporosis but the mechanism by which its natural secretion is controlled has never been solved. In this project we will apply new insights and advanced technical approaches to resolve this most fundamental question of calcium homeostasis, namely how parathyroid hormone secretion is controlled.
The steroid hormone aldosterone controls salt balance and hence, blood pressure. It also has been shown to have a significant role in cardiac failure. Although drugs that block the aldosterone receptor are beneficial in the treatment of heart failure, they are limited by potassium retention in the kidney. In order to develop tissue-specific blockers of the aldosterone receptor, it is necessary to identify mechanisms by which the receptor can be activated and/or blocked in these tissues.
Development Of A Multi-faceted Diagnostic And Predictive Tool To Characterise Type Of Diabetes, Therapeutic Progression And Outcome
Funder
National Health and Medical Research Council
Funding Amount
$352,550.00
Summary
Diabetes is diagnosed using clinical assessment complemented by a few selected basic conventional laboratory tests. We plan to determine, in a representative community-based sample of Australian with diabetes, whether additional knowledge of genetic markers, diabetes-related antibody levels and tests of insulin secretory capacity adds to diagnosis of diabetes type, prediction of therapeutic progression over time, complications and death.