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Regulation Of Adult Colonic Crypt Homeostasis And Activation Of Colon Cancer Metastasis Genes By C-Myb
Funder
National Health and Medical Research Council
Funding Amount
$666,116.00
Summary
Regulation of normal colon biology and activation of genes involved colon cancer The c-myb gene is essential for the normal biology of the blood system and the colon. This gene is involved in regulating the balance between the production of new cells and their timely removal once they have completed their assigned tasks. There is a large body of evidence that supports the role of c-myb in the regulation of the blood system. We believe that the rules that govern the production of the huge number ....Regulation of normal colon biology and activation of genes involved colon cancer The c-myb gene is essential for the normal biology of the blood system and the colon. This gene is involved in regulating the balance between the production of new cells and their timely removal once they have completed their assigned tasks. There is a large body of evidence that supports the role of c-myb in the regulation of the blood system. We believe that the rules that govern the production of the huge number of cells needed to have a healthy blood system are similar if not identical to the rules used by the colon. This is because the colon also produces a massive number of cells each with special tasks and a defined life span of a few days. It is this rapid expansion of cell numbers and the programmed short life span of cells that necessitates multiple controls and very tight regulation. Furthermore if this process is hijacked by genetic changes that undermine these controls then there are numerous opportunities to initiate and potentiate malignant change or cancer. This project examines the role of the same genes in two contexts. Firstly when the genes are expressed at normal, highly regulated levels associated with the normal biology of the colon. The second context is when these genes are permitted to be over-expressed and thus drive processes for longer or in inappropriate situations leading to malignant growth.Read moreRead less
A Comprehensive Analysis Of Myb Target Genes Involved In Myelopoiesis And Myeloid Transformation
Funder
National Health and Medical Research Council
Funding Amount
$511,294.00
Summary
The MYB gene is essential for both normal blood cell formation and the growth of leukaemia cells. It acts by switching other genes (target genes) on and off. This project aims to advance our understanding of how MYB functions, by carrying out a comprehensive search for MYB target genes. In particular it will focus on target genes that help explain MYB's ability to control cellular growth and maturation. Some of these target genes may provide leads for future anti-cancer drug development.
Molecular analysis of photosynthetically-linked, active CO2 uptake and CO2 signal transduction by cyanobacteria (blue-green algae). Cyanobacteria (blue-green algae) have evolved a very efficient means of capturing and concentrating CO2 for photosynthetic fixation into sugars, the basic building blocks for cell growth. This process is dependent on the operation of several unique, active uptake systems for CO2 and HCO3-, with their genetic expression regulated by CO2 supply. This proposal will cap ....Molecular analysis of photosynthetically-linked, active CO2 uptake and CO2 signal transduction by cyanobacteria (blue-green algae). Cyanobacteria (blue-green algae) have evolved a very efficient means of capturing and concentrating CO2 for photosynthetic fixation into sugars, the basic building blocks for cell growth. This process is dependent on the operation of several unique, active uptake systems for CO2 and HCO3-, with their genetic expression regulated by CO2 supply. This proposal will capitalize on our progress in describing the functional genetics of this process and aims to elucidate the mechanism of active CO2 uptake and the way that cells sense the ambient CO2 concentration. The information gained is likely to be useful for designing improved crops.Read moreRead less
Combinatorial controlled gene expression delivering crops resistant to nematodes. Root-knot nematodes cause US$130 billion crop losses worldwide pa, and at least AUS$ 450 pa in Australia. Current control methods involve fumigation, chemicals (mainly carbamates and organophosphates), natural plant resistance and biological control. The fumigants (eg methyl bromide) are being phased out because they damage the ozone layer, most of the non-fumigants are being banned because of environmental damag ....Combinatorial controlled gene expression delivering crops resistant to nematodes. Root-knot nematodes cause US$130 billion crop losses worldwide pa, and at least AUS$ 450 pa in Australia. Current control methods involve fumigation, chemicals (mainly carbamates and organophosphates), natural plant resistance and biological control. The fumigants (eg methyl bromide) are being phased out because they damage the ozone layer, most of the non-fumigants are being banned because of environmental damage and persistence in groundwater, and biological control has had limited success. These problems are addressed in this project with development of synthetic plant resistance to nematodes, which will benefit horticultural and broadacre farming by reducing pathogen losses and improving quality.Read moreRead less
Osteoporosis is a pathological loss of bone that affects many Australians. It occurs because of an excessive release of calcium from bone that is caused by the overactivity of the cells that break down bone, osteoclasts. We have studied two genes that are involved in the way these cells work and by a close examination of the the way they are regulated we hope to understand how osteoclasts are derived and how their activity is controlled. In particular we will look at two newly dicovered osteocla ....Osteoporosis is a pathological loss of bone that affects many Australians. It occurs because of an excessive release of calcium from bone that is caused by the overactivity of the cells that break down bone, osteoclasts. We have studied two genes that are involved in the way these cells work and by a close examination of the the way they are regulated we hope to understand how osteoclasts are derived and how their activity is controlled. In particular we will look at two newly dicovered osteoclast regulators called PPAR-gamma and PPAR-delta. These offer the opportunity for the development in the future of new, alternative drugs for the treatment of osteoporosis.Read moreRead less
In this grant we aim to study the moecular basis of cancer. The promoter regions of tumour suppressor genes are often modified in cancer by a chemical process called methylation. Methylation of DNA is associated with gene silencing. Therefore DNA methylation is commonly regarded as causing the silencing of genes in cancer. In this grant, we aim to determine if methylation is causal in triggering gene silencing in cancer, or if methylation is a consequence of gene silencing. This is a critical di ....In this grant we aim to study the moecular basis of cancer. The promoter regions of tumour suppressor genes are often modified in cancer by a chemical process called methylation. Methylation of DNA is associated with gene silencing. Therefore DNA methylation is commonly regarded as causing the silencing of genes in cancer. In this grant, we aim to determine if methylation is causal in triggering gene silencing in cancer, or if methylation is a consequence of gene silencing. This is a critical distinction in understanding the role of methylation in cancer development.Read moreRead less
The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will ....The link between environmental stress and disease onset in prawn aquaculture. The federal government has set a target for prawn aquaculture production to increase fourfold by 2010. A major barrier is disease: losses of 20% of production to viral diseases are not uncommon. To be internationally competitive, Australia needs to develop high health production systems. Most prawn stock carry chronic viral infections, but only exhibit disease symptoms following environmental stress. This project will identify environmental stressors that activate viral disease in Penaeus monodon. Outcomes will be incorporated into on-farm managerial regimes to minimize risk of crop loss to disease. Development of biomarkers as indicators of stress related risks may be commercialized.Read moreRead less
Inferring Global Regulatory Architecture Of Human Gene Expression In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$47,427.00
Summary
Our genome encodes ~25,000 genes that shape out an individual from head to toe. Malfunction of a particular gene could cause fatal health problem or disease. Nonetheless, the mis-regulation of functioning genes can also result in serious diseases. In this study, we are going to use large-scale gene regulation information and advanced computing techniques to clarify the regulation network of human genome on a global level. Hence, helping us to understand more about diseases of gene transcription.
PKC-zeta-dependent Sp1 Phosphorylation: Regulatory Insights using Novel Phospho-Specific Sp1 Antibodies and Peptide Decoys. This project will demonstrate the value of novel phospho-specific Sp1 antibodies and phospho-Sp1 peptide decoys as new molecular tools to provide invaluable insights into the regulatory roles of phosphorylated Sp1 in the control of gene expression, an area poorly defined at the present time. These agents will be used to increase our fundamental understanding of Sp1 activity ....PKC-zeta-dependent Sp1 Phosphorylation: Regulatory Insights using Novel Phospho-Specific Sp1 Antibodies and Peptide Decoys. This project will demonstrate the value of novel phospho-specific Sp1 antibodies and phospho-Sp1 peptide decoys as new molecular tools to provide invaluable insights into the regulatory roles of phosphorylated Sp1 in the control of gene expression, an area poorly defined at the present time. These agents will be used to increase our fundamental understanding of Sp1 activity by identifying physiologic agonists of the PKC-zeta-phospho-Sp1 axis and FasL-dependent apoptosis, interactions of phospho-Sp1 with the authentic FasL promoter and its recruitment of collaborative factors. The commercial exploitation of phospho-specific Sp1 antibodies and phospho-Sp1 peptide decoys will generate economic returns to Australia.Read moreRead less