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Biomarkers And EGFR Inhibitor Treatment Of Lung Cancer
Funder
National Health and Medical Research Council
Funding Amount
$286,328.00
Summary
Non-Small Cell Lung Cancer (NSCLC) remains the most frequent cause of cancer death in the Australian population. This laboratory research will involve researchers across a number of centres in Australia. The research is focused on the effects of a new targeted cancer drug called cetuximab. The Epidermal Growth Factor Receptor (EGFR) pathway is an important cause of NSCLC in many patients, and this is blocked by cetuximab. The advent of new targeted cancer therapies, which block specific cancer p ....Non-Small Cell Lung Cancer (NSCLC) remains the most frequent cause of cancer death in the Australian population. This laboratory research will involve researchers across a number of centres in Australia. The research is focused on the effects of a new targeted cancer drug called cetuximab. The Epidermal Growth Factor Receptor (EGFR) pathway is an important cause of NSCLC in many patients, and this is blocked by cetuximab. The advent of new targeted cancer therapies, which block specific cancer pathways in the cell, has highlighted the need for detailed knowledge about how these therapies work at the molecular level, so that we can make best use of them. The laboratory studies will be on tissues taken from patients with NSCLC who are receiving chemotherapy then going on to surgery to have the cancers removed. Tumour samples will be taken prior to treatment, and then the surgical resection will also be analysed. Sequential blood samples will also be taken. Prior to surgery, patients will receive a 9 week course of chemotherapy with cisplatin and docetaxel to shrink the cancer. In addition, some patients will be randomised to receive cetuximab along with chemotherapy. In the laboratory, we will investigate whether various measures of activation of the EGFR pathway in the cancer and in blood predict for response to cetuximab. We will also investigate how the changes in tumour with cetuximab treatment differ from tumours not treated with the drug. We will be examining the genes and proteins of EGFR and those of a number of related pathways. a number of related receptor, along with From this we will attempt to understand which patients benefit most from the drug and also in what specific ways the cancer cells are affected by the treatment.Read moreRead less
Signalling Networks As Targets For Antibody Therapy In Glioma.
Funder
National Health and Medical Research Council
Funding Amount
$526,683.00
Summary
Antibodies are a major component of the bodies immune system that bind (i.e. stick) to foreign substances such as viruses. Once bound, these antibodies can activate other parts of the immune system, which help destroy the foreign substance. Analogous to the situation above, a number of institutions are testing antibodies that bind to cancer cells, in order to determine if they are able to destroy these cells. It is also possible to generate antibodies that bind to receptors on the surface of can ....Antibodies are a major component of the bodies immune system that bind (i.e. stick) to foreign substances such as viruses. Once bound, these antibodies can activate other parts of the immune system, which help destroy the foreign substance. Analogous to the situation above, a number of institutions are testing antibodies that bind to cancer cells, in order to determine if they are able to destroy these cells. It is also possible to generate antibodies that bind to receptors on the surface of cancer cells and block their function. If you target a receptor critical to the growth or survival of a cancer cell in this way, then swtiching-off this signal may inhibit tumor growth. In this proposal we plan to test a panel antibodies that recognize receptors important to the growth of brain cancer. Two of these antibodies have been generated and the other two will be made as part of this proposal. A key aspect of this proposal will be testing these antibodies in combination to determine how many receptors need to be targeted in order to get complete tumor regressions in animal models. Overall this work will help us identify new therapeutic strategies for the treatment of brain cancer. Finally, we will also analyze the way different receptors interact together in brain cancer cells.Read moreRead less
EphA3-modulated Cell Positioning In Tumour Invasion And Neovascularisation.
Funder
National Health and Medical Research Council
Funding Amount
$647,232.00
Summary
During the progression of human cancers, tumor cells increasingly lose their ability to communicate and co-exist in a regulated fashion with normal cells to maintain the status quo. Because they multiply uncontrollably, tumour cells spread into surrounding tissue and can invade other organs of the body. The Ephs and interacting ephrins are proteins on the cell surface, and their communication controls the position of cells within the body tissues and organs, but also in tumours. Together with co ....During the progression of human cancers, tumor cells increasingly lose their ability to communicate and co-exist in a regulated fashion with normal cells to maintain the status quo. Because they multiply uncontrollably, tumour cells spread into surrounding tissue and can invade other organs of the body. The Ephs and interacting ephrins are proteins on the cell surface, and their communication controls the position of cells within the body tissues and organs, but also in tumours. Together with collaborators at the Ludwig Institute for Cancer Research and the Queensland Institute for Medical Research we produced two proteins, an antibody and a recombinant ephrin that bind one of the Eph proteins on tumour cells. The antibody allowed us to locate Eph in tumours, where it appears surprisingly not only on tumour cells but also on tumour blood vessels. When attached to a redioactive compund it selectively targets the cancer cells and in an animal study prolonged the survival of mice with leukemia significantly. We will now investigate the exact role of this Eph protein in tumour blood vessels. We will then study what happens in tumours when a toxic antibody-drug compound targets this tumour and starts to kill tumour cells. Finally, we will devise a novel reagent that combines the properties of the antibody with the properties of the ephrin into a single protein, which can deliver a cell-killing drug exclusively and most efficiently to tumour cells containing the Eph protein on its surface.Read moreRead less
Inhibition Of Breast Cancer Metastasis Through Targeting Of Laminin-10 Function
Funder
National Health and Medical Research Council
Funding Amount
$391,241.00
Summary
Breast cancer affects 1 in 11 women in Australia. Whilst breast cancer is highly curable when detected early, current treatments are ineffective when the disease has spread to other organs such as bone and lungs. Thus, novel therapies for the treatment of advance disease are urgently needed. We have found that laminin-10, a protein present in the breast and thought to control normal breast development and maturation, is particularly abundant in aggressive tumours as well as in those that have sp ....Breast cancer affects 1 in 11 women in Australia. Whilst breast cancer is highly curable when detected early, current treatments are ineffective when the disease has spread to other organs such as bone and lungs. Thus, novel therapies for the treatment of advance disease are urgently needed. We have found that laminin-10, a protein present in the breast and thought to control normal breast development and maturation, is particularly abundant in aggressive tumours as well as in those that have spread to bone and lungs suggesting that this protein may play a role in the dissemination of breast cancer cells to other organs. Consistent with this, we have found that laminin-10 stimulates breast tumour cell adhesion and movement in culture, two activities required for successful metastasis of tumour cells. The overall objective of the projects is to demonstrate that breast cancer metastasis can be inhibited by interefering with the function of laminin-10. To this end, we will measure the effect of blocking the production of LN-10 in breast tumour cells on their ability to metastasise. Alternatively, we will test fragments of laminin-10 for their ability to block laminin-10-induced tumour cell growth and movement (required for their escape from the breast) and viability (required for their establishment in distant organs). We will generate antibodies against the most inhibitory fragments and test their effect on spontaneous metastasis in a clinically relevant mouse model of breast cancer metastasis in an attempt to stop-reverse the progression of the disease. If successful, this project will provide the foundation for the development novel inhibitors targeting laminin-10 for the treatment of patients with advanced breast cancer.Read moreRead less
The critical role of the class III histone deacetylase SIRT2 in stabilizing N-Myc oncoprotein. Cancer is the commonest cause of death from disease in children. Neuroblastoma is the commonest solid tumor in early childhood. This project will investigate the critical roles of SIRT2 protein in increasing the expression of N-Myc oncoprotein and consequently inducing neuroblastoma, and SIRT2 inhibitors as anticancer agents.
Mitochondrially targeted anti-cancer drugs modulate the mitochondrial genome. Successful cancer management requires novel therapeutical approaches. This project will test the effect of a new class of compounds that target mitochondria, the powerhouse of the cells, where they suppress expression of mitochondrial genes. By this mechanism, cancers that are resistant to apoptosis induction can be inhibited.
Molecular hallmarks of androgen receptor targeting in prostate cancer. There is a critical need in oncology drug development for better biomarkers of response to prostate cancer therapies, clinically to assist with treatment decision making, and pre-clinically to facilitate translation of emerging agents into clinical practice. Using a unique explant culture model, this project will identify protein and lipid markers that can be used to accurately and reliably assess response to androgen recepto ....Molecular hallmarks of androgen receptor targeting in prostate cancer. There is a critical need in oncology drug development for better biomarkers of response to prostate cancer therapies, clinically to assist with treatment decision making, and pre-clinically to facilitate translation of emerging agents into clinical practice. Using a unique explant culture model, this project will identify protein and lipid markers that can be used to accurately and reliably assess response to androgen receptor (AR)-targeting therapies in human prostate tumours. The identification and functional assessment of these biomarkers will identify those that can be used as surrogate endpoints in clinical trials, facilitate earlier approval of investigational agents and lead to improved options for therapeutic management of prostate cancer.Read moreRead less
Novel platinum(IV) complexes that are targeted to and trapped by tumours and tumour cells. Platinum complexes continue to be a mainstay in the treatment of solid tumours and their combination with molecularly targeted agents selected for the type of tumour and the mutations identified is expected to lead to continued growth in their use. However, their toxicity remains a major impediment to their use and effectiveness and therefore, this project aims to develop less toxic analogues that are as l ....Novel platinum(IV) complexes that are targeted to and trapped by tumours and tumour cells. Platinum complexes continue to be a mainstay in the treatment of solid tumours and their combination with molecularly targeted agents selected for the type of tumour and the mutations identified is expected to lead to continued growth in their use. However, their toxicity remains a major impediment to their use and effectiveness and therefore, this project aims to develop less toxic analogues that are as least as effective as current drugs. This project will combine recent developments in stabilisation and cellular trapping of platinum(IV) pro-drugs with a range of strategies designed to limit activation of these pro-drugs to the tumour environment.Read moreRead less
Genome-wide SNP Analysis Of Fibroblasts Juxtaposed Or Distant From Epithelial Breast And Ovarian Tumours
Funder
National Health and Medical Research Council
Funding Amount
$401,763.00
Summary
In the past it was believed that the driving factor in the process of cancer devlopment was the cancer tissue itself. More recently however, it has become clear that the process is far more complex and that many aspects of human biology can profoundly influence both an individuals presiposition to cancer and the severity of disease. Many laboratories, including our own, have shown that gene mutations frequently occur in cancer tissue but recent studies have suggested that the apparently normal t ....In the past it was believed that the driving factor in the process of cancer devlopment was the cancer tissue itself. More recently however, it has become clear that the process is far more complex and that many aspects of human biology can profoundly influence both an individuals presiposition to cancer and the severity of disease. Many laboratories, including our own, have shown that gene mutations frequently occur in cancer tissue but recent studies have suggested that the apparently normal tissue surrounding the cancer (often referred to stroma) may also contain mutations. This so called 'cancer associated stroma'(CAS) is also thought to harbour genetic mutations and some studies have shown that without these mutations the cancer cannot survive. At present we have only had glimpses of the genetic alterations that may occur in CAS and there is an urgent need to fully understand the interplay between CAS and frankly cancerous tissue. Our laboratory will utilise high density, genome-wide screening technologies to search for novel mutations in CAS from breast and ovarian cancers. A complete understanding of the role stroma plays in cancer development is likely to lead to novel ways of treating and preventing cancer. Consequently, the identification of the full repertoire of stroma-derived cancer promoting genes is emerging as one of the most important areas in cancer research. The identification of these genes could lead to the development of novel diagnostic markers for use in cancer detection, diagnosis and-or prognosis.Read moreRead less
Caged lanthanides for use in photo-dynamic therapy and near infra-red imaging. The early detection and effective treatment of cancer are two critical factors which determine survivability. This project will provide improved drugs for photo-dynamic therapy and develop emissive probes for near infra-red imaging to allow better discrimination between healthy and diseased tissue and improve subsequent treatment.