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.
Tumour-associated Macrophages (TAMs) And Their Role In Breast Cancer Metastasis
Funder
National Health and Medical Research Council
Funding Amount
$72,537.00
Summary
Tumour-associated macrophages (TAMs) have been implicated in breast cancer spread. Tumour cell behaviour is influenced by the surrounding environment. This study will determine the relationship of TAMs to other cell populations, if the expression of the enzyme, u-PA, in non-tumour cells within the tumour environment is important for breast cancer spread, and whether TAM precursor white blood cells home to the primary tumour and-or to the site of tumour spread before the arrival of tumour cells.
Investigating Tumour Development And Metastasis Using A Novel Drosophila Cancer Model.
Funder
National Health and Medical Research Council
Funding Amount
$505,500.00
Summary
The majority of cancers are derived from epithelial cells. The primary cause of cancer related deaths is due to the ability of these epithelial cancer cells to migrate and invade other tissues within the body away from their primary tissue of origin (metastasise). This proposal seeks to understand the pathways that are important in regulating the processes of epithelial cell migration and invasion that are instrumental in promoting the metastatic spread of tumour cells. As controls usually opera ....The majority of cancers are derived from epithelial cells. The primary cause of cancer related deaths is due to the ability of these epithelial cancer cells to migrate and invade other tissues within the body away from their primary tissue of origin (metastasise). This proposal seeks to understand the pathways that are important in regulating the processes of epithelial cell migration and invasion that are instrumental in promoting the metastatic spread of tumour cells. As controls usually operate to induce cell death in any cell that attempts to break away and invade other tissues, this proposal also seeks to understand some of the pathways that are responsible for causing these cells to die. To carry out these investigations we have developed a novel Drosophila model of epithelial cancer development. We use this model because of the ease with which it is possible to carry out complex genetic analyses and so dissect the roles of the many different signalling pathways involved in these processes. The strength of the model is that it is dependent upon genetic alterations that are also implicated in the development and metastatic spread of many mammalian cancers, namely activating mutations in two genes, Ras and Notch. It is expected, therefore, to offer considerable insight into why these activated genes also cause the spread of cancer cells in humans.Read moreRead less
A Fluorescent Zebrafish Model Of Endodermal Cell Migration.
Funder
National Health and Medical Research Council
Funding Amount
$535,333.00
Summary
The most catastrophic event in cancer progression is when individual cancer cells move to other areas of the body and develop into secondary tumours. This very complex process shows striking similarities to cell movements during embryogenesis. In this project, we use a model system, the zebrafish, to analyse how cells move during embryogenesis. We will determine the genes required for cell movements in the zebrafish embryo, so we can find the corresponding genes in human cancers.
Identification Of New Therapeutic Targets In Neuroblastoma Through ABCC Transporter Associated Pathways.
Funder
National Health and Medical Research Council
Funding Amount
$591,436.00
Summary
Neuroblastoma accounts for 15% of childhood cancer deaths. Children diagnosed over 1 year have survival rates below 40%. New research shows that certain genes previously implicated in drug resistance contribute to neuroblastoma development. We will investigate their role using a new neuroblastoma model and a range of biochemical and cell biology techniques. This research will improve our understanding of neuroblastoma biology and identify new therapeutic targets in this and other cancers.
Although the immune system has the ability to reject tumours, this sometimes does not occur, leading to cancer. There are many different types of cells that make up the immune system, including some which respond very early, called natural killer (NK) and NKT cells. These cells are the first line of defence against some tumours, although we do not understand how they recognise and respond to tumour cells. The aim of this project is to investigate the functional importance of both NK and NKT cell ....Although the immune system has the ability to reject tumours, this sometimes does not occur, leading to cancer. There are many different types of cells that make up the immune system, including some which respond very early, called natural killer (NK) and NKT cells. These cells are the first line of defence against some tumours, although we do not understand how they recognise and respond to tumour cells. The aim of this project is to investigate the functional importance of both NK and NKT cells in response to a range of different tumour types, including melanoma (skin cancer), lung carcinoma, breast carcinoma and sarcoma (connective tissue tumour). We will test the importance of each of these subsets by injecting these tumours into mice that have specific deficiencies in NK and-or NKT cells. If the NK or NKT cells are important, the tumours should grow more effectively when these immune cells are absent. We will also be able to put NK and-or NKT cells back into the mice to show directly that they are responsible for tumour rejection. Using a modification of this cell transfer approach, we will be able to inhibit special molecules that are normally produced by these cells that help them interact with other cells, and also help them attack the tumour cells. Collectively, the approaches outlined in this application allow us to determine which types of cells are important in response to a broad range of different tumour types, and also should tell us how these cells are able to attack the tumours. This information will be invaluable for the development of new strategies to use the patients immune system to attack cancer (known as immuno-therapy).Read moreRead less
Genetic Engineering Of Tumor-infiltrating Monocytes To Inhibit Primary And Metastatic Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$792,470.00
Summary
The immunosuppressive environment within a tumour is the major impediment to the successful application of cancer immunotherapy. To address this, we developed a cell- and gene-based strategy for targeted delivery of a potent immune-stimulatory molecule, IFN-?, which activates the immune response at the site of the tumour. We now propose to combine this strategy with promising cancer immunotherapies for the treatment of advanced breast cancer and breast cancer metastasis.