Many approaches to the prevention and treatment of allergy and associated asthma are dependent on the identification of the allergens producing the inflammation. This applies to new methods of determining the exposure to allergens and measuring the effectiveness of procedures which minimise allergen exposure. Diagnostic and immunotherapeutic measures require reliable preparations of allergens. The presence of important allergens in extracts however can be variable and often low so it important t ....Many approaches to the prevention and treatment of allergy and associated asthma are dependent on the identification of the allergens producing the inflammation. This applies to new methods of determining the exposure to allergens and measuring the effectiveness of procedures which minimise allergen exposure. Diagnostic and immunotherapeutic measures require reliable preparations of allergens. The presence of important allergens in extracts however can be variable and often low so it important that the allergens be identified and monitored. It is also important that new forms of immunotherapy being developed consider the responses to all allergens. Allergy to the cat is, behind house dust mite, the second most frequent allergy associated with asthma in most developed countries and brief exposure to a cat frequently induces life-threatening attacks. Almost all of the study of cat allergens have concentrated on a single allergen called Fel d 1. Although it importance is undisputed critical reading of the literature show it is only responsible for 50% of the IgE binding in cat extracts and recent work on cross allergy to cat and dogs and experimental therapy based on Fel d 1 point to the importance of other allergens. Experience with other source of allergens has shown that at least several allergens are usually important. It is also apparent from other studies that some allergens which are difficult to detect in extracts, and cannot be readily studied by immunochemistry are important. This project will use both cDNA cloning and immunochemistry to identify and characterize the other cat allergens and determine there relative importance. In particular it intended that they can be used, along with Fel d 1, to develop new types of immunotherapy.Read moreRead less
Identifying The Molecular Basis Of Memory B Cell Function And Human Immunoglobulin E Memory Via Hyper Immunoglobulin E Syndromes
Funder
National Health and Medical Research Council
Funding Amount
$96,009.00
Summary
Memory B cells generate rapid and potent antibody responses to known threats. The molecular basis for this is unknown, but defects increase the risk of infection, autoimmunity, and allergy. Autoimmunity and allergy are often mediated by a poorly understood antibody subclass, immunoglobulin E (IgE). My project will use emerging single-cell technologies to reveal the molecular mechanisms of antibody memory and IgE regulation, enabling the design of superior vaccines and immunomodulatory therapy.
Development Of Clinical Algorithms To Diagnose And Predict Prognosis Of Food Allergy
Funder
National Health and Medical Research Council
Funding Amount
$136,636.00
Summary
Australia has the highest rate of food allergy internationally. Despite ongoing research into the area, there is currently no cure, with patient avoidance the most effective mode for the prevention of food allergy. A food challenge still the gold standard for food allergy diagnosis, and although definitive, is associated with a risk of anaphylaxis. My research aims to identify the biological differences between active disease and being healthy to develop novel diagnostic methods for food allergy
Effects Of Allergens On Dendritic Cell Function In Allergic Asthma
Funder
National Health and Medical Research Council
Funding Amount
$254,250.00
Summary
In recent decades, there has been a nearly three-fold increase in the prevalence of allergic diseases such as asthma. Although the reason these diseases have increased in prevalence remains unknown, we suspect the way in which the immune system responds to foreign proteins in the environment may be very important in determining whether an individual develops allergic disease or not. How and why individuals with allergic asthma respond excessively and inappropriately to inhalation of a small rang ....In recent decades, there has been a nearly three-fold increase in the prevalence of allergic diseases such as asthma. Although the reason these diseases have increased in prevalence remains unknown, we suspect the way in which the immune system responds to foreign proteins in the environment may be very important in determining whether an individual develops allergic disease or not. How and why individuals with allergic asthma respond excessively and inappropriately to inhalation of a small range of seemingly innocuous proteins (allergens) is a central question in respiratory medicine and allergy. We propose that investigating the way that antigen presenting dendritic cells (DC) respond directly to allergens will shed important light on this issue, as DC are fundamental to our ability to deal with foreign antigens and to generate an appropriate immune response. The overall hypothesis underpinning this proposal is that allergens induce specific responses in DC from individuals with allergic asthma, and that this contributes to the maintenance and amplification of allergic tissue inflammation in this disease. Understanding the ways in which DC respond to clinically relevant allergens will lead to significant progress in understanding the pathogenesis of allergic asthma. This project was recommended for funding last year, but was relinquished when one of the previous co-investigators on last year's grant was awarded a Program grant.Read moreRead less