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Functional Analysis Of The Ym2 Chitinase-like Lectin In Allergic Airways Disease
Funder
National Health and Medical Research Council
Funding Amount
$283,767.00
Summary
The prevalence of asthma is widespread and nationally affects over two million Australians. Consequently, one of the Country s National Health Priorities is to improve our understanding of this condition. Analyses of the asthmatic lung reveal an airway wall that is thickened, an airway lumen that is obstructed and abnormal spasmogenicity of the airway smooth muscle: processes that collectively contribute to both acute and chronic respiratory dysfunction. Asthmatics develop an immune response tha ....The prevalence of asthma is widespread and nationally affects over two million Australians. Consequently, one of the Country s National Health Priorities is to improve our understanding of this condition. Analyses of the asthmatic lung reveal an airway wall that is thickened, an airway lumen that is obstructed and abnormal spasmogenicity of the airway smooth muscle: processes that collectively contribute to both acute and chronic respiratory dysfunction. Asthmatics develop an immune response that is biased toward production of allergy-related T helper 2 cytokines of which interleukin (IL)-13 is a potent mediator of disease. However, the molecular processes linking IL-13 with abnormal airway wall changes are unclear. To identify previously uncharacterised IL-13-related molecules, we used a protein profiling approach that identified a novel lectin (carbohydrate-binding protein) termed Ym2, which is secreted abundantly into the airway fluid of mice in which allergic airways disease has been induced. Preliminary studies suggest that Ym2 is an intermediary of IL-13 that is involved in respiratory dysfunction. This project aims to work out how Ym2 interacts with the molecules and cells of the respiratory tract to regulate allergic disease. Specific inhibitors of Ym2 will be developed to examine what happens to allergic responses when Ym2 can t function; transgenic mice will be developed to determine if we see features of allergy when Ym2 is over-expressed in the normal lung, and human samples will be screened to identify the human counterpart of Ym2 and whether this counterpart is secreted into the lung fluid of asthmatics. Defining the mechanism by which Ym2 regulates the pathogenesis of allergic disease will not only contribute to our basic understanding of the processes underlying asthma pathology, but also generate new information for better design of therapeutics directed against specific mediators of this debilitating and widespread disease.Read moreRead less
Expression And Function Of Fatty Acid Binding Proteins In Asthmatic Airway Epithelium
Funder
National Health and Medical Research Council
Funding Amount
$226,500.00
Summary
Asthma is an inflammatory disease of the lungs that affects over 10% of all Australians. It ranges in severity from mild to life-threatening. Although a number of drugs are currently available for the treatment of asthma, there are many people whose asthma does not respond very well to treatment. We have recently identified a gene called aP2 that is important in the development of asthma. Drugs targeted against this gene may be very useful in the treatment of asthma. In this project, we aim to u ....Asthma is an inflammatory disease of the lungs that affects over 10% of all Australians. It ranges in severity from mild to life-threatening. Although a number of drugs are currently available for the treatment of asthma, there are many people whose asthma does not respond very well to treatment. We have recently identified a gene called aP2 that is important in the development of asthma. Drugs targeted against this gene may be very useful in the treatment of asthma. In this project, we aim to understand how aP2 is turned on during asthma, and how it contributes to disease development. This information will be essential for designing optimal strategies for drug targeting of the aP2 pathway in asthma.Read moreRead less
Regulatory Roles Of Mast Cells In Cutaneous Dermatitis In Vivo
Funder
National Health and Medical Research Council
Funding Amount
$586,965.00
Summary
Allergic conditions that can affect the skin, such as contact dermatitis or eczema are common amongst Australians. Although not life threatening, these common skin conditions can cause considerable physical diability and be expensive to treat. The major focus of our research is to define how dermal mast cells can be modulated to help limit the tissue changes and damage associated with these skin conditions, and ultimately develop improved treatments in the future.
Mechanism Of Exacerbations In Cystic Fibrosis Lung Disease
Funder
National Health and Medical Research Council
Funding Amount
$254,876.00
Summary
Cystic Fibrosis lung disease is characterised by infeciton with a bug called Pseudomonas aeruginosa. Patients ultimately die in their mid-30's as a result of this infection, but lung decline is accelerated by episodes of exacerbation when patients cough up large volumes of mucky sputum. We are studying the casue of exacerbations by looking at bacterial behaviour and the response of the immune system. We will use this information to try and develop early warning signals and better treatments.