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Failure to correctly regulate cell death leads to a number of diseases, including cancers and auto-immune diseases. Viruses have the ability to hijack the host cell death machinery for their own benefit. Viral infections have been linked to a number of cancers. We aim to target the ability of viruses to hijack the process of cell death to develop new treatments against virus-linked cancers including Burkitt's Lymphoma and Nasopharyngeal Carcinoma.
A Prospective Single Arm Trial Of Involved-field Radiotherapy For Stage I-II Low Grade Nongastric Marginal Zone Lymphoma
Funder
National Health and Medical Research Council
Funding Amount
$363,869.00
Summary
This is an international, multicentre study that will, for the first time, prospectively measure the curative potential of radiotherapy in localised marginal zone lymphoma (MZL). Most MZL arises in mucosa-associated lymphoid tissue (MALT), either in the stomach or in a range of other organs such as salivary glands, the tissues around the eye or the thyroid. Many stomach MALT lymphomas are caused by infection with Helicobacter Pylori. This infection can also be associated with non-gastric MALT ly ....This is an international, multicentre study that will, for the first time, prospectively measure the curative potential of radiotherapy in localised marginal zone lymphoma (MZL). Most MZL arises in mucosa-associated lymphoid tissue (MALT), either in the stomach or in a range of other organs such as salivary glands, the tissues around the eye or the thyroid. Many stomach MALT lymphomas are caused by infection with Helicobacter Pylori. This infection can also be associated with non-gastric MALT lymphomas, but the association has never been prospectively studied. Chlamydia Psittaci infection can cause MALT lymphoma in the orbit. The management of localised MZL outside the stomach is controversial and there have been no large prospective studies of any of the commonly-used treatments (radiotherapy, chemotherapy, surgery). No prospective studies have looked at the role of infection with Helicobacter pylori or the role of autoantibodies in these diseases. Radiotherapy is the best-characterised therapy in the literature and appears to have a high cure rate with low toxicity. The disease seems exquisitely radiosensitive. Management of localised MZL in Australia can be ad hoc and we have often seen patients who have undergone unnecessary mutilating surgery or ineffective chemotherapy. It has been reported that localised non-gastric MZL (stage I and II) can be cured with radiotherapy in a high percentage of patients (usually >70%) in retrospective studies from large centres such as Princess Margaret Hospital in Toronto. Workers from that centre will participate in this study. This study will: Prospectively report efficacy and toxicity for radiotherapy in MZL for the first time Definitively document Helicobacter Pylori status in all cases and Chlamydia status in orbital cases Provide a gold standard against which to compare new therapies This study won the award for the most highly supported study in its year at the TROG annual scientific meeting.Read moreRead less
Biomarker-driven Applications Of Immunotherapy In Lymphoma
Funder
National Health and Medical Research Council
Funding Amount
$189,384.00
Summary
Immunotherapy is a new treatment strategy that works in many different lymphoma types but there is no successful method of predicting response or selecting patients. I aim to explore use of immunotherapy in 3 key lymphoma subtypes to identify new techniques for predicting which patients respond to treatment through prospective biomarker research using novel techniques. These aims will be achieved through a series of clinical trials of immunotherapy in lymphoma all with a biomarker research focus
Adult non-Hodgkin?s lymphoma (NHL) is one of the most rapidly increasing cancers of recent times. The rise has occurred worldwide in men and women of all ages. The reason for most of the rise is unknown. It has recently been proposed that part of the upsurge may be due to increases in sun exposure which have occurred during the same period. There is some indirect evidence to support this hypothesis. For example, the rate of occurrence of NHL is higher closer to the equator in Australia than it i ....Adult non-Hodgkin?s lymphoma (NHL) is one of the most rapidly increasing cancers of recent times. The rise has occurred worldwide in men and women of all ages. The reason for most of the rise is unknown. It has recently been proposed that part of the upsurge may be due to increases in sun exposure which have occurred during the same period. There is some indirect evidence to support this hypothesis. For example, the rate of occurrence of NHL is higher closer to the equator in Australia than it is in England and Wales, and NHL is diagnosed more frequently among British migrants to Victoria than it is in their homeland. The sunlight hypothesis will be tested by comparing the pattern of sun exposure in Tasmanians diagnosed with NHL during the years 1998-2001 and in a sample of Tasmanians without the disease. tasmania has been chosen because levels of ultraviolet (UV) radiation are low there in all but the summer months, when it approaches the levels of Brisbane, Sydney and Melbourne. There is therefore a greater difference in UV exposure between the most exposed and the least exposed in Tasmania, making it an ideal location to test the hypothesis. The link between NHL and a measure of melanin pigmentation in the skin will also be studied. The incidence of NHL is higher in lighter-skinned ethnic groups than it is in darker-skinned people living at the same latitude, but it is not known whether risk varies within Caucasian populations. A new measure of melanin in the skin, developed at the Menzies Centre for Population Health Research in Hobart, will better allow the effects of skin colour to be studied.Read moreRead less
The Role Of CD30 Overexpression In CD30-positive Non-Hodgkins Lymphomas
Funder
National Health and Medical Research Council
Funding Amount
$457,242.00
Summary
The CD30 molecule sits on the surface of normal blood cells, but in a type of cancer called Lymphoma, CD30 concentration is high. The level of expression of CD30 may determine if the cancer cell is killed by the normal defense mechanisms or is able to grow uncontrollably. We are studying the control elements of the CD30 gene to understand how control is lost when the cell becomes cancerous. This knowledge may lead to therapeutic strategies to control lymphoma.
Tumour B-cells From Lymphomas Are Resistant To ATP-mediated Apoptosis Due To Non-functional P2X7 Receptors
Funder
National Health and Medical Research Council
Funding Amount
$226,320.00
Summary
Adenosine triphosphate (ATP) is an important constituent normally present inside cells. When added to normal lymphocytes (or released by cells lining the vessel wall or in lymph nodes), ATP acts from outside these cells to open a pore as well as activate an enzyme which digests the lipid envelope of the cell. This loss of lipid covering of the cell produces a leakiness to various constituents of the cell which gradually leads to death of normal lymphocytes. However in the malignant lymphocytes o ....Adenosine triphosphate (ATP) is an important constituent normally present inside cells. When added to normal lymphocytes (or released by cells lining the vessel wall or in lymph nodes), ATP acts from outside these cells to open a pore as well as activate an enzyme which digests the lipid envelope of the cell. This loss of lipid covering of the cell produces a leakiness to various constituents of the cell which gradually leads to death of normal lymphocytes. However in the malignant lymphocytes of human lymphomas this mechanism of cell death does not operate. The loss of function of this 'death receptor' explains why in the lymphomas there is a progressive accumulation of malignant lymphocytes which give enlargement of lymph nodes and spleen and leads to death of the patient. Knowledge of the defect in this pathway of cell death will enable new strategies to be introduced to control this malignant disease.Read moreRead less