Modern chemotherapies are designed to exert maximal effect on tumour cells while having minimal side-effects on normal cells. Remarkable advances in our understanding of the molecular biology of cancer has provided possible avenues for more successful targeted cancer treatments. Several crucial interactions between cancer-specific proteins called oncoproteins , occur largely in tumour cells and thus provide ideal targets for intervention. The proposed project is to develop a model system for a t ....Modern chemotherapies are designed to exert maximal effect on tumour cells while having minimal side-effects on normal cells. Remarkable advances in our understanding of the molecular biology of cancer has provided possible avenues for more successful targeted cancer treatments. Several crucial interactions between cancer-specific proteins called oncoproteins , occur largely in tumour cells and thus provide ideal targets for intervention. The proposed project is to develop a model system for a target specific therapy of leukaemia cells by blocking the interactions between oncoproteins. Moreover, the ability to isolate specific blockers of particular protein-protein interactions provides an opportunity to unravel complex genetic pathways in mammalian systems, which are relatively intractable by other analyses. The dissection of pathways using specific blockers may also provide a useful avenue for identifying new drug targets. We have chosen to target particular interactions involving one known oncoprotein in the search for specific inhibitors. A genetic selection will be used to identify random, constrained peptide sequences which are capable of blocking these interactions and which do not interfere with other interactions involving the oncoprotein. This technique allows one to select for or against specific blockers of known interactions from a library containing millions of candidate drug leads in baker's yeast cells. This procedure will be most suitable for high through-put drug screening projects. The validity of this approach to the identification of new peptide drug leads will be finally established in vivo using transgenic models of oncoprotein-dependent cancer in mice.Read moreRead less
A-Prof Roberst is a clinical haematologist caring for patients with blood cancers, who is committed to developing new therapies for currently incurable diseases through laboratory and clinical trial research.
In Australia seventeen persons are diagnosed with leukemia or a related blood disorder each day. An understanding of the way the body controls blood cell production has widespread relevance to diseases like leukemia and the way that they are treated. The burden of this disease on the Australian health budget will continue to increase dramatically as our population ages in coming years. Moreover, an understanding of blood cell production has wider relevance to similar control mechanisms in other ....In Australia seventeen persons are diagnosed with leukemia or a related blood disorder each day. An understanding of the way the body controls blood cell production has widespread relevance to diseases like leukemia and the way that they are treated. The burden of this disease on the Australian health budget will continue to increase dramatically as our population ages in coming years. Moreover, an understanding of blood cell production has wider relevance to similar control mechanisms in other organs, as nature reuses its best inventions. Australia has had an enviable international record in discoveries related to factors controlling blood cells and we wish to continue that tradition by examining an exciting new development involving microRNAs. These molecules are found in all normal cells but they have been ignored until recently. Although the field is in its infancy, we now know that these microRNAs are likely to be involved in many cellular processes. In this project we will study the importance of this new class of regulatory molecule in order to discover previously-hidden functions in normal blood cells and their malignant counterparts (leukemias) in humans. The team comprises two laboratories which have collaborated for many years and already a number of exciting molecular methods have been developed. Ultimately this project may lead to novel treatments involving gene therapy, bone marrow transplantation and blood hormones.Read moreRead less
Is Hypoxia Inducible Factor 2 The Trigger Of The Angiogenic Switch And A Driver Of Disease Progression In Myeloma?
Funder
National Health and Medical Research Council
Funding Amount
$605,096.00
Summary
Multiple myeloma (MM) is a fatal cancer of plasma cells (PC). PC migrate to the bone marrow, which compared with other organs is low in oxygen (hypoxic). In response to this hypoxia, the cancer cells turn on the expression of genes called hypoxia-inducible factors (HIF). HIFs activate the expression of genes that encourage blood vessel formation, which in turn stimulates greater tumour growth and disease progression. This proposal will investigate the role of HIFs in the progression of MM.
A Phase I Study Of Autologous CD19 Specific Chimeric Antigen Receptor T-cells For Therapy Of Relapsed And Refractory B-cell Leukaemia And Lymphoma (The Auto-CAR19 Trial).
Funder
National Health and Medical Research Council
Funding Amount
$584,666.00
Summary
Most people with leukaemia and lymphoma who relapse early after chemotherapy die of their disease. Inserting special genes into immune cells can enable them to kill leukaemia and lymphoma and has led to dramatic cures, but the cost of the viral vectors used to make these cells is prohibitively expensive. We will make leukaemia and lymphoma specific immune cells from patients using an inexpensive non-viral system, then administer the immune cells to patients to assess their safety and efficacy.
A Phase I Study Of PiggyBac CD19 Specific Chimeric Antigen Receptor T-cells For Therapy Of Persistent And Relapsed B-cell Leukaemia And Lymphoma Post Allogeneic Stem Cell Transplantation (The CARTELL Study).
Funder
National Health and Medical Research Council
Funding Amount
$357,590.00
Summary
Most people with relapsed leukaemia and lymphoma after bone marrow transplant die of their disease. Inserting special genes into immune cells can enable them to kill leukaemia and lymphoma and has led to dramatic cures, but there is little experience in bone marrow transplant patients. We will make leukaemia and lymphoma specific immune cells from normal bone marrow transplant donors, then administer the immune cells to transplant patients to assess their safety and effectiveness.
Proof-of-concept Studies For A Novel Anti-thrombotic Agent
Funder
National Health and Medical Research Council
Funding Amount
$632,352.00
Summary
Blood clots cause most heart attacks and strokes, and platelets are the blood cells that form these clots. Drugs that block platelet function, such as aspirin, are used to prevent heart attack and stroke but are frequently ineffective. Here, we will develop a new drug that prevents platelet incorporation into blood clots, that will be suitable for the prevention of heart attack and stroke in humans, and that may improve on existing therapies.
A Clinical Trial Of Partially HLA-matched Unrelated Donor Microtransplantation For Prevention Of Relapse In Patients With Acute Myeloid Leukaemia Ineligible For Standard Haemopoietic Stem Cell Transplantation
Funder
National Health and Medical Research Council
Funding Amount
$154,828.00
Summary
Acute myeloid leukaemia has a poor prognosis in patients unable to undergo bone marrow transplant, in particular in the elderly. No proven therapy improves their poor outcome. There is an urgent need to identify clinically applicable, non-toxic therapies for this group of patients. We will perform a clinical trial of "microtransplantation" using unrelated stem cell donors in combination with chemotherapy to try to reduce the relapse rate in these patients without the toxic effects of standard st ....Acute myeloid leukaemia has a poor prognosis in patients unable to undergo bone marrow transplant, in particular in the elderly. No proven therapy improves their poor outcome. There is an urgent need to identify clinically applicable, non-toxic therapies for this group of patients. We will perform a clinical trial of "microtransplantation" using unrelated stem cell donors in combination with chemotherapy to try to reduce the relapse rate in these patients without the toxic effects of standard stem cell transplantation.Read moreRead less
The Role Of CXCL12 (SDF-1)/CXCR4 In Pathological Angiogenesis And Osteolytic Bone Disease In Multiple Myeloma
Funder
National Health and Medical Research Council
Funding Amount
$665,896.00
Summary
Multiple myeloma (MM) is the second most common haematological (or blood) cancer in western countries and is unique amongst blood cancers in its capacity to destroy the skeleton. MM is a cancer of plasma cells, which in their normal non-cancerous form, reside in lymph nodes and produce antibodies against infectious agents. When they become cancerous, they migrate or home to congenial sites within the bone marrow (BM). This directed movement or homing occurs under the influence of a chemokine mol ....Multiple myeloma (MM) is the second most common haematological (or blood) cancer in western countries and is unique amongst blood cancers in its capacity to destroy the skeleton. MM is a cancer of plasma cells, which in their normal non-cancerous form, reside in lymph nodes and produce antibodies against infectious agents. When they become cancerous, they migrate or home to congenial sites within the bone marrow (BM). This directed movement or homing occurs under the influence of a chemokine molecule called CXCL12 which acts as a calling card for plasma cells to leave the lymph node and migrate to the BM. Once within the BM, the cells rapidly grow in response to BM-derived growth factors. This rapid growth causes a depletion in oxygen availability within the tumour and it becomes hypoxic. In response to this hypoxia, the tumour expresses a gene called hypoxia-inducible factor-1 (HIF-1) which regulates the expression of many proteins, including the chemokine CXCL12. Our studies show that the abnormal expression of CXCL12 by the plasma cells acts to promote blood vessel formation within the tumour, which in turn leads to greater tumour growth. In addition, our studies suggest that abnormal CXCL12 expression also promotes the recruitment and activation of large numbers of osteoclast (OC) precursors form the peripheral blood. OC are cells which normally remove unwanted or damaged bone. This proposal will study the interplay between HIF and CXCL12 in the establishment and development of MM and the associated bone destruction.Read moreRead less