The Role Of The Human RECK Protein In Modifying Human Sarcoma Progression Within In Vitro And In Vivo Models
Funder
National Health and Medical Research Council
Funding Amount
$34,878.00
Summary
The protein “RECK” is known to have a controlling effect on cancers by reducing growth, invasion, and blood supply. RECK is present in normal tissues but in bone and soft-tissue tumours (sarcomas), the protein is reduced. This study aims to; correlate RECK levels in sarcoma with patient survival, use gene technology to increase RECK levels in sarcoma cells, and observe the effects on sarcoma invasion and metastasis.
Identification Of Biomarkers Predictive Of Response To Bevacizumab In Patients With Glioblastoma Multiforme
Funder
National Health and Medical Research Council
Funding Amount
$32,628.00
Summary
Despite multimodality therapy, the median survival for patients diagnosed with high grade malignant brain tumours is only 12 months. Patient response to therapy is highly variable. Our aim is to develop a “genetic signature” that will predict response to bevacuzimab (an agent targeting blood vessel formation). Identifying patients who will respond to bevacuzimab will save many patients from a toxic and costly therapy, from which they will derive little benefit.
The Renin Angiotensin System A Novel Target In The Treatment Of Colorectal Liver Metastases.
Funder
National Health and Medical Research Council
Funding Amount
$152,556.00
Summary
Over 4500 Australians die from colorectal cancer annually primarily from spread (metastasis) to the liver. Blockade of the renin angiotensin system (RAS) can reduce liver metastases. However, the mechanisms by which RAS blockade inhibits tumour development are poorly understood. This research will establish how RAS regulates tumour growth and how manipulation of the RAS suppresses tumours. The prospective use of RAS blockade offers an exciting opportunity in the treatment of this disease.
The Importance Of VEGF-D, An Angiogenic Protein, For Lymphangiogenesis, Tumor Growth And Metastasis.
Funder
National Health and Medical Research Council
Funding Amount
$227,036.00
Summary
Tumors attract blood vessels to obtain the nutrients for growth. Furthermore, the presence of blood vessels in a tumor enables tumor cells to enter the bloodstream and spread to distant parts of the body - a process known as metastatis that is the major cause of death in cancer patients. The growth of blood vessels - angiogenesis - is the mechanism by which tumors attract the vasculature. The capacity to block tumor angiogenesis would be of great benefit in the clinic as it would restrict both t ....Tumors attract blood vessels to obtain the nutrients for growth. Furthermore, the presence of blood vessels in a tumor enables tumor cells to enter the bloodstream and spread to distant parts of the body - a process known as metastatis that is the major cause of death in cancer patients. The growth of blood vessels - angiogenesis - is the mechanism by which tumors attract the vasculature. The capacity to block tumor angiogenesis would be of great benefit in the clinic as it would restrict both the growth and spread of tumors. Tumor cells attract blood vessels by secreting angiogenic growth factors that stimulate the proliferation of endothelial cells - the cells that form the inner lining of blood vessels. These Vascular Endothelial Growth Factors (VEGFs) are proteins. One VEGF, namely VEGF-D, was discovered in our laboratory at the Melbourne Branch of the Ludwig Institute for Cancer Research. VEGF-D stimulates the growth of blood vessels and possibly lymphatic vessels and is present in the most common human cancers including malignant melanoma and cancer of the breast and lung. We hypothesize that angiogenesis in some tumors is dependent on VEGF-D. Moreover, VEGF-D secreted by tumor cells may stimulate growth of lymphatic vessels - lymphangiogenesis. As metastatic spread often occurs via the lymphatic vessels, tumor lymphangiogenesis induced by VEGF-D may contribute to metastasis. The purpose of the research project is to determine the role of VEGF-D in tumor angiogenesis and lymphangiogenesis. Firstly we will thoroughly characterize the localization of VEGF-D in human cancer. Secondly, we will test VEGF-D for lymphangiogenic activity. Thirdly, the growth and metastatic spread in mice of tumors overexpressing VEGF-D will be analysed. Finally, aspects of VEGF-D biochemistry and gene regulation will be studied to develop strategies for inhibition of VEGF-D action in cancer.Read moreRead less
Definition Of The Role Of Senescence In Tumour-associated Endothelial Cells.
Funder
National Health and Medical Research Council
Funding Amount
$583,081.00
Summary
'Cellular senescence' is a mechanism to stop cells growing, and it may protect against tumour growth. However, it may also induce changes in cells leading to 'pro-tumour' effects. We have identified a gene - which we have called SEN1 - which induces senescence in the blood vessels of tumours. This gene may cause alterations in the blood supply to the tumour allowing it to grow and to resist chemotherapy. Understanding this gene may allow us to treat cancer by shutting off its blood supply.
Development And Evaluation Of Biological Reagents Targeting And Inhibiting Function Of The EphA3 Receptor On Tumor Cells
Funder
National Health and Medical Research Council
Funding Amount
$490,500.00
Summary
Eph receptors and their ligands regulate morphogenesis in the embryo; they direct migration and positioning of cells during the formation of tissue layers and organ systems. There is little evidence for a function of Ephs in adult tissues. However, their abundant, un-scheduled occurrence in various malignant tumours, indicates a role in cancer. Human EphA3, the principle subject of this proposal, is not found in adult tissue but is present at high levels in lung, kidney and brain tumours, leukem ....Eph receptors and their ligands regulate morphogenesis in the embryo; they direct migration and positioning of cells during the formation of tissue layers and organ systems. There is little evidence for a function of Ephs in adult tissues. However, their abundant, un-scheduled occurrence in various malignant tumours, indicates a role in cancer. Human EphA3, the principle subject of this proposal, is not found in adult tissue but is present at high levels in lung, kidney and brain tumours, leukemia and malignant melanoma. High levels of EphA3 and corresponding ligands correlate with melanoma progression, and EphA3 stimulation triggers repulsion and detachment of melanoma cells. It is likely that Eph A3 is involved in release and spreading of tumour cells during melanoma progression. We have characterised reagents, the soluble EphA3 ligand and a monoclonal anti-EphA3 antibody, which bind EphA3 with high affinity and specificity. We will use these two proteins, or modified forms containing attached radiochemicals or cytotoxins, to target human tumours that were implanted into into immuno-deficient mice as animal model system. Our studies will determine if the specificity of our reagents, suggested from previous in-vitro studies, will allow imaging of EphA3 containing tumours, and effect their targeted killing. We will also use a tissue culture model, containing artificial epidermal and dermal layers of skin cells, to study if an inhibitory form of the EphA3 ligand will affect the invasiveness of EphA3 positive, metastatic melanoma cells. Furthermore, we will identify essential parts of this ligand to develop inhibitors with improved pharmacological properties. Together, our studies will establish the role for EphA3 in cancer progression and to assess the efficacy of EphA3 targeting for tumor killing and prevention of metastasis. We envision that this will provide the groundwork for Eph-specific reagents with anti-metastatic action in cancer therapy.Read moreRead less