Autoimmune-based thrombocytopenia can be a life-threatening adverse event associated with viral load, surgery, drug therapies or the use of the anticoagulant, heparin. This grant will define mechanisms of anti-platelet antibody-dependent platelet activation and assess shedding of platelet-specific glycoprotein (GP)VI as an immediate consequence of this activation, provide a new strategy for evaluating risk of thrombosis in HIT.
We have discovered how a rare type of human antibody called IgG4 exerts a major regulatory influence on the body's immune system. We have discovered how IgG4 can "switch" off inflammatory white blood cells which has broad implications for the development of new forms of therapy for switching off allergies and autoimmune diseases and for switching on immunity to infections and cancers.
Importance Of Functional Antibodies Against Infectious Diseases
Funder
National Health and Medical Research Council
Funding Amount
$431,000.00
Summary
Antibodies are highly functional proteins capable of recognizing infectious disease pathogens and instructing surrounding immune cells to attack them. This project aims to identify specific antibody targets on HIV and Mycobacterium Tuberculosis associated with protection/control of disease and to understand the mechanisms behind the most functional antibodies. Ultimately, these studies will guide the development of future vaccines and therapies against these deadly pathogens.
Prevention Of HIV-1 Infection By Adeno Associated Virus Vector-delivered Broadly Neutralizing Antibodies Or Antibody-like Molecules
Funder
National Health and Medical Research Council
Funding Amount
$875,854.00
Summary
A promising neutralizing molecule has boosted hopes of an HIV vaccine. It remains unknown how well this molecule prevents HIV infection under conditions reflecting “real world” exposure, including exposure to HIV in the form of cells carrying virus or free-floating virus in the presence of semen. We will assess this molecule for their ability to inhibit transmission of HIV-like viruses under these conditions. These experiments will define requirements to protect against HIV infection.
Structure And Function Of Receptors For IgG (FcgammaR)
Funder
National Health and Medical Research Council
Funding Amount
$678,492.00
Summary
We are studying one of the most important receptor families of inflammatory white blood cells, so called Fc receptors. These are crucially important in maintaining resistance to infection. Unfortunately they are also instrumental in causing tissue damage in major inflammatory diseases including arthritis, lupus and bleeding disorders. Our studies of how Fc receptors trigger inflammation will provide the basis for the development of new drugs and strategies to treat chronic inflammation.