Determining The Clinical Relevance Of Intratumour Heterogeneity In Breast Cancer And Its Relationship To Metastases Formation
Funder
National Health and Medical Research Council
Funding Amount
$314,644.00
Summary
Breast cancer metastasis is generally an incurable disease, yet it is not well-understood. This project aims to understand how cancer metastasises by using a novel and unique approach of analysing multiple regions from matched primary and metastatic tumours from breast cancer patients. Expected outcomes include identifying predictors of treatment resistance and resultant personalised management and therapeutic strategies to improve survival outcomes of breast cancer patients.
Characterisation Of The Role & Biomarker Potential Of The Novel Cell Surface Protein TTYH2 In Renal Cell Carcinoma
Funder
National Health and Medical Research Council
Funding Amount
$489,000.00
Summary
Renal cell carcinoma is the most common cancer of the kidney. One-third of patients upon first diagnosis have secondary tumour sites already within their body as well as new treatment approaches for more advanced disease making them very difficult to cure. An early specific test for this cancer is urgently needed. Our group has identified a new gene called TTYH2 which is highly expressed by renal cell carcinoma tissue samples but not in normal kidney tissues. In this study, we intend to look at ....Renal cell carcinoma is the most common cancer of the kidney. One-third of patients upon first diagnosis have secondary tumour sites already within their body as well as new treatment approaches for more advanced disease making them very difficult to cure. An early specific test for this cancer is urgently needed. Our group has identified a new gene called TTYH2 which is highly expressed by renal cell carcinoma tissue samples but not in normal kidney tissues. In this study, we intend to look at the expression of TTYH2 in more clinical samples to determine if TTYH2 will be a useful bio-marker for this cancer. We are also studying the function of this protein in renal cell carcinoma cells to identify the exact role that TTYH2 performs in cancer development and progression. Finally we will look at what other proteins are interacting with TTYH2 in kidney cancer cells. These latter studies will help us to understand the disease process better and may help us design new treatment methods.Read moreRead less
The Nature And Significance Of Clonal Evolution In Human Melanoma
Funder
National Health and Medical Research Council
Funding Amount
$665,420.00
Summary
Cancers can progress in patients by developing genetic changes that favor the growth, survival and spread of cancer cells. However, the rate at which genetic changes occur in human cancer is not known. This project will determine the degree and biological significance of genetic change in human melanoma by using a novel method of growing tumors from single cells and comparing genetic differences between them.
Elucidating The Function Of Rho-ROCK Signalling In The Regulation Of Cancer Progression
Funder
National Health and Medical Research Council
Funding Amount
$636,568.00
Summary
As cancers progress from benign to more malignant forms, the way in which cancer cells respond to external influences changes dramatically. These cells subvert the normal interactions between proteins which pass signals from outside the cell to the inside, to control cell behaviour and assume a survival advantage. We plan to study a form of cell signalling that is often abnormal in cancer in order to identify technologies for limiting cancer growth and spread by interfering with these signals.
The migration of cancer cells (metastasis) is responsible for most cancer deaths. Central to this is dynamic organisation of the actin cytoskeleton _ an internal structure that provides cell shape and enables movement. We have identified a family of small molecules (called miR-200) that regulates this actin cytoskeleton through specifically downregulating various genes. We are investigating the nature of these genes and their role in cell motility _ an underlying pre-requisite of metastasis.
Linking Breast Development To Bone Metastasis: Role For The Osteogenic Transcription Factor Runx2 During Breast Carcinogenesis
Funder
National Health and Medical Research Council
Funding Amount
$565,145.00
Summary
Bone is the principle metastasis site of breast cancer and represents a major cause of morbidity and mortality. Runx2 is one potential candidate gene mediating breast cancer metastasis. Using mice with altered Runx2 levels and breast cancer models, this study will examine the role of Runx2 in breast cancer bone metastasis. Identification of a single gene that controls both breast and bone would open a new area of breast cancer research and a new gene against which therapies could be developed.
In this project we aim to define the role of the Siah proteins in tumour angiogenesis and inflammatory responses. Hypoxia, a decrease in oxygen tension, places constrains on tumour growth where access to oxygen is yet to be established via new blood vessel formation. In addition hypoxia is common in areas of inflammation and wound healing, where blood vessels have been shut down to help in recovery. With the use of our Siah knockout mice we have a unique model that allows us, for the first time, ....In this project we aim to define the role of the Siah proteins in tumour angiogenesis and inflammatory responses. Hypoxia, a decrease in oxygen tension, places constrains on tumour growth where access to oxygen is yet to be established via new blood vessel formation. In addition hypoxia is common in areas of inflammation and wound healing, where blood vessels have been shut down to help in recovery. With the use of our Siah knockout mice we have a unique model that allows us, for the first time, to investigate the role of Siah in the hypoxia signalling cascade. How cells sense and react to low oxygen levels is complex and involves several proteins. A key protein is called Hypoxia induced factor, Hif-1. It accumulates under hypoxia and is responsible for the expression of genes enabling the cell to tolerate and function under hypoxic conditions. tolerate and function under hypoxic conditions, which is involved in new blood vessel formation. PHD protein directs the degradation of Hif1, while Siah directs the degradation of PHD, when oxygen is limiting. Loss of Siah proteins (eg in our knockout models) leads to an increase in PHD proteins under hypoxia thus no stabilisation of Hif-1 and impaired response to hypoxia. Thus, sitting on the top of a cascade, which controls the trashing of proteins in the cell (focus of this year's Nobel price for medicine), Siah has primary control on the response to oxygen deprivation. The relative immunity of multicellular organisms to acquired defects is through redundancy. Oxygen is a unique case, for which organisms can not bypass the defect via redundancy, making it an attractive target for future therapy. Therefore, understanding the molecular and cellular response to hypoxia may allow us to identify key molecules which could be targeted for the development of novel anti inflammatory and cancer drugs. The scope of this study is to understand the key role of Siah utilising our knockout mice in models of inflammation and cancer.Read moreRead less
Identifying The Targets Of MiRNA Regulation In Cancer
Funder
National Health and Medical Research Council
Funding Amount
$290,600.00
Summary
microRNAs are noncoding RNAs with fundamental functions in biology and significant roles disease. microRNAs control gene expression by destroying RNA or controlling its translation into cellular proteins. To determine how certain microRNAs cause human disease it is essential to know their RNA targets. We are developing methods to identify these targets and aim to apply these methods to identify the targets of microRNAs with known roles in cancer.
The Transcriptional Profile Of A Metastatic Circulating Melanoma Cell
Funder
National Health and Medical Research Council
Funding Amount
$273,630.00
Summary
Melanoma is an aggressive skin cancer, and the leading cause of skin cancer related deaths. Disease spread is difficult to detect and difficult to cure. We previously identified circulating melanoma cells in patient peripheral blood and showed that their presence is associated with disease stage and recurrence. We will now fully characterise the phenotype of actively metastatic circulating melanoma cells for better patient prognosis and routine monitoring.
Mechanistic Basis Of AP-1-regulated Gene Expression During Colorectal Cancer Progression
Funder
National Health and Medical Research Council
Funding Amount
$597,802.00
Summary
The spread of colorectal cancers in the body poses a major clinical problem for which current treatment options are inadequate. This project aims to unravel how a specific DNA-binding protein regulates the expression of genes involved in the spread of these cancers. The research is expected to provide a better mechanistic understanding of how disease progression occurs and to identify novel strategies to treat aggressive tumours.