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Regulation Of Gastric Tumour Invasion And Growth By Gp130 Activating Cytokines.
Funder
National Health and Medical Research Council
Funding Amount
$625,642.00
Summary
Gastric cancer is a major cause of morbidity and death worldwide. We have previously established a very informative animal model of this disease which has facilitated a new understanding of the diverse role of the IL-6 family of cytokines in regulating gastric tumour growth and dissemination to distant organs. This proposal will focus on how the main members of this cytokine family, namely IL-6 and IL-11, inhibit gastric tumour invasion to other organs, and promote tumour growth respectively . A ....Gastric cancer is a major cause of morbidity and death worldwide. We have previously established a very informative animal model of this disease which has facilitated a new understanding of the diverse role of the IL-6 family of cytokines in regulating gastric tumour growth and dissemination to distant organs. This proposal will focus on how the main members of this cytokine family, namely IL-6 and IL-11, inhibit gastric tumour invasion to other organs, and promote tumour growth respectively . An understanding of these processes will aid in designing therapeutic interventions specific for each cytokine and which may lead to drugs aimed at limiting or reversing this disease.Read moreRead less
The Function Of Histidine-rich Glycoprotein In Inflammation And Cancer
Funder
National Health and Medical Research Council
Funding Amount
$455,670.00
Summary
This research proposal investiagtes the role of a molecule known as histidine-rich glycoprotein (HRG) in the important diseases of cancer and inflammation. Inflammatory diseases can occur when the the normal checks on the immune system breakdown resulting in attacks on the body leading to tissue damage (e.g rheumatoid arthritis) and are significant contributors to morbidity and health costs in Australia. Cancer is the leading cause of death in Australia (28.4% of deaths in 2003). HRG has been im ....This research proposal investiagtes the role of a molecule known as histidine-rich glycoprotein (HRG) in the important diseases of cancer and inflammation. Inflammatory diseases can occur when the the normal checks on the immune system breakdown resulting in attacks on the body leading to tissue damage (e.g rheumatoid arthritis) and are significant contributors to morbidity and health costs in Australia. Cancer is the leading cause of death in Australia (28.4% of deaths in 2003). HRG has been implicated in controlling important aspects of inflammatory and cancer disease progression. Namely, HRG appears to regulate the formation and clearance of substances known as immune complexes - the primary cause of tissue damage in this disease. Furthermore, HRG may also control the process of cell invasion which is crucial for the migration of white blood cells of the immune system (leukocytes) to sites of inflammation to combat infections, and is also an important mechanism by which malignant tumour cells escape from primary tumour sites and spread throughout the circulation to other sites in the body. It is this process that makes cancer such a deadly disease. This study aims to define how HRG contributes to these important processes. This information may allow the development of new therapeutic approaches for the treatment of inflammatory diseases and cancer.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.
A Lineage Specific Pathway For Progression Of Melanoma
Funder
National Health and Medical Research Council
Funding Amount
$485,746.00
Summary
Melanoma is an insidious cancer, and its incidence has increased dramatically over the past four decades. Melanoma has an almost universally poor prognosis once metastasis has occurred. There are currently no treatment regimens that have a significant impact on prolonging survival or decreasing mortality from metastatic melanoma. Our preliminary data has shown the importance of a factor found in normal melanocytes in control over expression of a separate factor required for invasion and metastas ....Melanoma is an insidious cancer, and its incidence has increased dramatically over the past four decades. Melanoma has an almost universally poor prognosis once metastasis has occurred. There are currently no treatment regimens that have a significant impact on prolonging survival or decreasing mortality from metastatic melanoma. Our preliminary data has shown the importance of a factor found in normal melanocytes in control over expression of a separate factor required for invasion and metastasis of melanoma. These markers could serve as an important diagnostic marker for melanoma. Further, they may be suitable drug targets for the prevention and treatment of metastatic melanoma, and will advance our understanding of how melanoma spreads.Read moreRead less
Role Of A Novel Tks5-Nck Signaling Pathway In Cancer Invasion
Funder
National Health and Medical Research Council
Funding Amount
$560,434.00
Summary
Invasion and metastasis are major causes of death in cancer patients. Our research has uncovered a pathway that increases the invasive potential of tumour cells in vitro. We now aim to determine if the pathway is relevant in invasion and metastasis in clinically relevant models; how a drug targeting the pathway affects invasion and; the extent to which the pathway is active in human tumours. These studies may identify a new molecular target for anti-invasive drugs.
The majority of deaths from cancer are due to metastasis, which is the formation of secondary tumours at sites remote from the primary tumour. Metastasis involves conversion of some tumour cells to an invasive, migratory form in a process that is controlled by small genetic regulators known as microRNAs. In this project we will conduct experiments aimed to provide a proof of principle demonstration in mice that microRNAs can be used to block the formation of metastases.
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
Normally cells only divide when they receive a stimulus from a hormone or growth factor. The PI3-kinase pathway responds to these stimuli and has been implicated in cellular immunity as well as cancer which occurs when cells divide uncontrollably and invade surrounding tissues. We have identified a putative oncogene (cancer causing gene) called MTMR4 that appears to regulate cell growth-invasion and pathogen invasion of immune cells. We aim to characterise the role of MTMR4 in these systems.
The Pez-TGFbeta-miR200-ZEB1-2 Axis In Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$533,541.00
Summary
A feature of late-stage cancer is metastasis - the dissemination of cancer cells to other tissues. Despite advances in treatment of primary cancers, metastatic disease remains the major cause of death in cancer patients. In metastatic cancers, the cells undergo a change that enables them to initially invade the surrounding tissues. We have discovered a novel regulator of the invasive process in tissue culture and this study aims to substantiate its role in breast cancer.
How Does Fra-1 Regulate The Invasive Properties Of Tumour Cells?
Funder
National Health and Medical Research Council
Funding Amount
$468,119.00
Summary
Most cancer deaths occur when tumours spread and destroy vital body functions. The invasion of tumour cells into surrounding tissue is a critical step during the spread of cancer. This project aims to unravel the molecular mechanisms that control the ability of tumour cells to invade into surrounding tissue and subsequently spread to other sites in the body. We expect to identify potential targets to better diagnose and treat the spread of cancer.