The team has been at the forefront of research on type 1 diabetes for over a decade. This form of diabetes is a major chronic disease from childhood, as well as accounting for at least 10% of adult-onset diabetes. It occurs when the body�s immune system attacks and destroys the beta cells in the pancreas that make insulin, the hormone that controls the level of glucose in the blood. The team was one of the first in the world, and is the only one in Australia, to develop screening programs to tes ....The team has been at the forefront of research on type 1 diabetes for over a decade. This form of diabetes is a major chronic disease from childhood, as well as accounting for at least 10% of adult-onset diabetes. It occurs when the body�s immune system attacks and destroys the beta cells in the pancreas that make insulin, the hormone that controls the level of glucose in the blood. The team was one of the first in the world, and is the only one in Australia, to develop screening programs to test and identify people at risk for type 1 diabetes. They showed that the underlying disease could start years before symptoms occurred and discovered genes that determine the rate at which the underlying disease progresses. They have also found evidence that the disease may be triggered by gut viruses called rotaviruses in genetically-susceptible individuals. They showed that type 1 diabetes could be prevented in a mouse model by getting the immune system to make a protective response to insulin, and then went on to apply this in at-risk humans in a controlled trial of intranasal insulin, the first of its kind. They have used genetic techniques not only to pinpoint the mechanisms responsible for killing the beta cells but also to modify the beta cells to make them resistant to attack by these mechanisms. The multidisciplinary approach of the team will be directed to further understanding the genetic and environmental factors underlying type 1 diabetes and the immune mechanisms, particularly involving special white blood cells called T cells, that kill beta cells. A molecular target of the immune attack, the parent of insulin called proinsulin, will be used, paradoxically, as a tool to regulate the immune system and avert the attack. This will be achieved by giving proinsulin via the mucosa of the naso-respiratory tract or via the bone marrow-derived stem cells, initiallyin the mouse model as a test of feasibility for human application. In parallel with these approaches to prevention, specially constructed viruses will be used to transfer several new genes into beta cells to improve their resistance to immune attack, so that they can be transplanted into people with established diabetes without the need for potentially toxic drugs that suppress the immune system overall. The integrated research of the team is helping to provide a sound, rational base for the eventual prevention and cure of type 1 diabetes.Read moreRead less
Regulation Of Bone Resorption And Formation In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$5,596,183.00
Summary
Bone is continually being formed and broken down, and these two processes are critical forthe maintenance of a normal skeleton. These processes are dependent upon communication between the bone building and degrading cells, and the hormones growth factors and cytokines that are present in the circulation or produced in bone. The tightly regulated processes of bone formation and degradation need to remain equal, and are essential for the achievement and maintenance of skeletal strength and form. ....Bone is continually being formed and broken down, and these two processes are critical forthe maintenance of a normal skeleton. These processes are dependent upon communication between the bone building and degrading cells, and the hormones growth factors and cytokines that are present in the circulation or produced in bone. The tightly regulated processes of bone formation and degradation need to remain equal, and are essential for the achievement and maintenance of skeletal strength and form. Osteoporosis results from an excess of bone breakdown over formation, and our Program aims to identify the factors that regulate these processes, and develop new therapies that can modify them. We will also determine what it is about bone cell properties that make some cancers, especially those of breast and prostate, particularly prone to spread to bone.Read moreRead less