Molecular Dissection Of Cytokine-mediated Regulation Of Human B-cell Differentiation.
Funder
National Health and Medical Research Council
Funding Amount
$119,314.00
Summary
Interleukin 21 is a molecule which activates B cells. Defects in this pathway cause immunodeficiency where individuals cannot make antibodies, while constant activation has been reported in mouse models of autoimmunity. Examining these pathways will shed light on the causes of human immune disease, and may reveal molecules that could be targeted for the treatment of immunodeficiency and autoimmunity. Amplification of normal immune responses could lead to the development of improved vaccines.
Competition For Polarity Influences Lymphocyte Differentiation And Function
Funder
National Health and Medical Research Council
Funding Amount
$380,558.00
Summary
CD46 is a protein on human cells that viruses and bacteria bind to during infection. Our laboratory has found that binding of CD46 on immune cells impairs their ability to recognize and kill target cells and may explain the immunosuppression caused by measles infection. We aim to investigate the mechanisms behind the effect of CD46 on immune cells. The outcomes of this study will define new paradigms in lymphocyte biology and determine how CD46 influences the immune response to infection.
I am an immunologist-cell biologist investigating the regulation of human immune responses in health and disease. The overall goal of this work is to improve immunity in individuals with immunodeficiencies, or during vaccination, or to attenuate immune re
Activated Protein C As A Promoter Of Wound Healing
Funder
National Health and Medical Research Council
Funding Amount
$391,650.00
Summary
The healing of wounds is a complex process involving a number of stages, including coagulation, inflammation, remodelling and finally development of full strength skin. Impaired wound healing and-or skin ulcers occur in patients with peripheral arterial occlusive disease, deep vein thrombosis, diabetes, pressure sores and burns. Despite intense investigation, the precise mechanisms associated with impaired healing are poorly understood. APC is a serine protease that plays a central role in physi ....The healing of wounds is a complex process involving a number of stages, including coagulation, inflammation, remodelling and finally development of full strength skin. Impaired wound healing and-or skin ulcers occur in patients with peripheral arterial occlusive disease, deep vein thrombosis, diabetes, pressure sores and burns. Despite intense investigation, the precise mechanisms associated with impaired healing are poorly understood. APC is a serine protease that plays a central role in physiological anticoagulation. APC potently activates gelatinase A, an enzyme that plays a prominent role during the remodelling phase of wound healing and angiogenesis. Our preliminary experiments provide very strong evidence that APC accelerates wound healing using both cultured cells and a rat skin wounding model. There are three aims to this study. The first will use cell culture techniques to investigate the mechanisms of action of APC during wound healing. Secondly, we will expand our pilot studies on the effect of APC as a promoter of wound healing in vivo. These studies will examine the exact dosing and timing regime for APC, using a rat wound healing model. In addition, we will test the effect of APC on slow healing wounds, present in diabetic rats. Thirdly, we will determine whether APC is quantitatively or functionally deficient in human wound fluid derived from slow-healing wounds compared to wounds that heal normally. This is the first time that APC has been implicated in wound healing. It is envisaged that this work will ultimately lead to a novel topical treatment of APC to accelerate slow-healing wounds.Read moreRead less
Investigations Into The Architectural And Biophysical Features Of Optimal T Cell Receptor Design
Funder
National Health and Medical Research Council
Funding Amount
$251,877.00
Summary
Humans evolve slowly, pathogens and cancer evolve quickly. Unsurprisingly, our immune systems often lose this arms race and we irreversibly succumb to disease. Catastrophically, >26 million people are lost every year to the these causes. This project will use a new technology to rapidly advance the evolution of human immune receptors to construct a class of super-receptor. These super-receptors may prove decisive weapons in the fight against cancer and infectious disease.
Polarity Regulation In T Cells: Mechanisms And Consequences.
Funder
National Health and Medical Research Council
Funding Amount
$542,462.00
Summary
Advances in our understanding of how the immune system works have led to many breakthroughs in healthcare, including organ transplantation, management of autoimmune diseases and immunodeficiencies such as AIDS. To improve these treatments, we need a better understanding of how the immune system is controlled. This proposal explores the mechanisms by which immune cell signalling is regulated by spatial compartmentalisation within the cell.