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The Role Of Co-signalling Receptors In Cytotoxic Lymphocyte Activity During Infection And Cancer
Funder
National Health and Medical Research Council
Funding Amount
$739,657.00
Summary
Cytotoxic lymphocytes (CLs) are immune cells that detect and kill cancer cells. CLs recognise ‘stress’ proteins on cancer cells through specialised receptors, and this provides the signal for them to kill. However, some cancer cells, such as leukemic cells, can interfere with this recognition to avoid killing by immune cells. This project will investigate the mechanism of recognition and killing of cancer cells by CLs, using both mouse models and cells from patients with acute myeloid leukemia.
Redirecting T-cells For Immunotherapy Of Leukaemia And Lymphoma By The Expression Of A CD19-specific Chimeric Antigen Receptor Using The PiggyBac Transposon Gene Modification System
Funder
National Health and Medical Research Council
Funding Amount
$374,876.00
Summary
Most lymphomas respond to therapy but then relapse. Immune cells can attack and kill virus related lymphomas. However, most lymphomas are NOT virus related. We will create immune cells targeting these virus negative lymphomas by inserting artificial receptors into the immune cells. These receptors attach to the lymphoma and activate the immune cells. The immune cells will home to the lymphoma, kill lymphoma cells and persist in the body for many years, preventing lymphoma relapse.
The Biology Of Events Following Reactivation Of Herpes Simplex Virus.
Funder
National Health and Medical Research Council
Funding Amount
$388,522.00
Summary
Herpes simplex virus causes genital herpes, severe disease in neonates, cold sores and occasionally fatal encephalitis. It lies doemant within nerve cells near the spine and reactivates intermittently, travelling down nerves to cause the characteristic ulcers in the skin, including the genitals. This grant has two major components. In the first we aim to continue studies which are defining the way in which Herpes simplex viruses assemble within nerve cells. These processes have always been the s ....Herpes simplex virus causes genital herpes, severe disease in neonates, cold sores and occasionally fatal encephalitis. It lies doemant within nerve cells near the spine and reactivates intermittently, travelling down nerves to cause the characteristic ulcers in the skin, including the genitals. This grant has two major components. In the first we aim to continue studies which are defining the way in which Herpes simplex viruses assemble within nerve cells. These processes have always been the subject of much debate and have never been properly studied in the nerve cells in which the virus lives. Furthermore the way in which herpes simplex virus enters the processes of nerve cells and moves to the cell body will be studied by similar techniques. Such studies may contribute to the development of herpes simplex virus as a vector for gene therapy for treatment of diseases of the nervous system. The second part of the grant will examine the immune processes that occur in the skin during the early stages of a recurrent herpes simplex lesion. In particular there is a linkage between nerves and the major cells in the skin which present viral antigen to defensive T-cells. This link may provide a route for direct access of herpes simplex virus to these cells. In previous work the viral protein targets in infected skin cells for killer T-cells which infiltrate the skin have been defined. In this grant we also aim to find the stretches of amino acids which are specifically targetted by these cells.Read moreRead less
Novel Approaches For Activation And Expansion Of Genetically Modified T Cells In Vivo
Funder
National Health and Medical Research Council
Funding Amount
$115,660.00
Summary
Killer T lymphocytes can penetrate tumors and their propagation and transfer into cancer patients has demonstrated some encouraging results, but this form of adoptive immunotherapy remains ineffective in most cancer patients. We propose to improve the tumor trafficking and anti-tumor activities of killer cells by genetically engineering them with proteins that will enable them to recognise and destroy cancer cells. Our previous work has indicated that killer T lymphocytes can be genetically engi ....Killer T lymphocytes can penetrate tumors and their propagation and transfer into cancer patients has demonstrated some encouraging results, but this form of adoptive immunotherapy remains ineffective in most cancer patients. We propose to improve the tumor trafficking and anti-tumor activities of killer cells by genetically engineering them with proteins that will enable them to recognise and destroy cancer cells. Our previous work has indicated that killer T lymphocytes can be genetically engineered in culture with tumor recognition receptors. When transferred into mice, these genetically engineered cells can release toxic and inflammatory proteins that cause tumor destruction. In this proposal we wish to further test this approach in mice by enginneering the mouse killer T cells with (i) receptors that provide stronger signals for killing and proliferation; and (ii) with receptors targeting other structures on tumor cells including the tumor vasculature as a means to overcome tumor escape. In addition, we wish to test a novel approach of combining both genetic engineering and vaccination strategies for expanding gene-modified cells after adoptive transfer. These studies will allow the best receptor genes to be transferred to human white blood cells and examined for anti-tumor effects in immune-deficient mice.Read moreRead less
The Role Of Non-classical MHC Class I Molecules In Adaptive Immunity
Funder
National Health and Medical Research Council
Funding Amount
$443,834.00
Summary
Specialised proteins called MHC class Ia molecules (MHC-Ia) stimulate killer T cells to lyse virus infected cells. In contrast, the function of the closely related MHC-Ib is uncertain. Recent findings have demonstrated that MHC-Ib can also be recognised by T cells and this interaction is important in the control of viral infections. However, despite the similarity to MHC-Ia, it is unclear how this interaction occurs. This project aims to investigate how killer T cells recognise MHC-Ib molecules.
The Role Of IL-18 In Proliferative And Crescentic Glomerulonephritis
Funder
National Health and Medical Research Council
Funding Amount
$56,177.00
Summary
Inflammation of the small filters with the kidneys, known as glomerulonephritis, is the commonest cause of kidney failure in Australia. People whose kidneys have failed need either kidney dialysis or a kidney transplant. Our understanding of the immune events that cause glomerulonephritis is patchy. However, it is known that T cells are the directors of immune responses in the body and direct the immune response in glomerulonephritis. Chemical messengers known as cytokines direct the way T cells ....Inflammation of the small filters with the kidneys, known as glomerulonephritis, is the commonest cause of kidney failure in Australia. People whose kidneys have failed need either kidney dialysis or a kidney transplant. Our understanding of the immune events that cause glomerulonephritis is patchy. However, it is known that T cells are the directors of immune responses in the body and direct the immune response in glomerulonephritis. Chemical messengers known as cytokines direct the way T cells behave. One of these cytokines, known as interleukin-18, has been shown to stimulate T cells and other immune cells to induce inflammation that is helpful when the body is fighting infection but is harmful in immune diseases. This project will determine the role of interleukin-18 in glomerulonephritis by studying the way it talks to T cells and the mechanisms by which it incites inflammation in the kidney. Mice with glomerulonephritis will be treated by blocking the actions of interleukin-18 to discover whether interleukin-18 produced by the animal is important in kidney damage induced by glomerulonephritis, to understand the way in which this cytokine works and to assess whether blocking interleukin-18 could be a useful treatment for glomerulonephritis in humans. Current treatments for glomerulonephritis are often ineffective and have unwanted side effects. Knowledge of the way interleukin-18 participates in the immune response in glomerulonephritis may lead directly or indirectly to more effective and more targeted treatments for different forms of glomerulonephritis.Read moreRead less
An Integrated Approach For The Efffective Adoptive Immunotherapy Of Cancer
Funder
National Health and Medical Research Council
Funding Amount
$468,119.00
Summary
Killer T lymphocytes can penetrate tumors and their transfer into cancer patients has demonstrated some encouraging results, but this form of immunotherapy remain ineffective in most cancer patients. We propose to improve the tumor trafficking and anti-tumor activities of killer cells by genetically engineering them with proteins that will enable them to recognise and destroy cancer cells. The outcomes of this project will validate this novel approach for treatment of cancer patients.