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Regulation Of Normal And Malignant Haematopoiesis By The Bone Marrow Environment
Funder
National Health and Medical Research Council
Funding Amount
$621,458.00
Summary
This project will identify factors within the bone marrow that regulate blood and immune cell formation. These include oxygenation and novel proteins identified in the applicant’s laboratory. How these factors from the bone marrow influence the behaviour of normal blood forming cells (called haematopoietic stem cells), and the progression of leukaemia and the response of leukaemia to chemotherapy treatments will be investigated. New drugs that interfere with these new factors will be tested for ....This project will identify factors within the bone marrow that regulate blood and immune cell formation. These include oxygenation and novel proteins identified in the applicant’s laboratory. How these factors from the bone marrow influence the behaviour of normal blood forming cells (called haematopoietic stem cells), and the progression of leukaemia and the response of leukaemia to chemotherapy treatments will be investigated. New drugs that interfere with these new factors will be tested for their potential to treat leukaemia.Read moreRead less
Identification Of The Molecular Genetic Basis Of The Hepatic Veno-occlusive Disease With Immunodeficiency Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$224,250.00
Summary
One of the most serious complications of bone marrow transplantation is veno-occlusive disease (VOD), also termed sinusoidal obstruction syndrome (SOS). This condition occurs in 10% of transplanted patients and is characterised by abnormalities of liver function, enlargement of the liver, clotting abnormalities, fluid retention and finally failure of multiple organs and death in 30-50% of cases. The cause of VOD is unknown, and its occurrence cannot be predicted in individual patients. Eight fam ....One of the most serious complications of bone marrow transplantation is veno-occlusive disease (VOD), also termed sinusoidal obstruction syndrome (SOS). This condition occurs in 10% of transplanted patients and is characterised by abnormalities of liver function, enlargement of the liver, clotting abnormalities, fluid retention and finally failure of multiple organs and death in 30-50% of cases. The cause of VOD is unknown, and its occurrence cannot be predicted in individual patients. Eight families have been described in whom a number of individuals have succumbed to a condition which is clinically and histologically indistinguishable from VOD. Affected individuals also have a form of immunodeficiency (hence termed VODI), and the abnormalities are inherited in an autosomal recessive pattern. All eight are of Lebanese origin, suggesting that a single genetic ancestral mutation was responsible for the disorder in all families, who are distantly related. We have access to genetic material from three of these families, and are on the way to identifying the causative genetic abnormality. We hypothesise that understanding this abnormality will lead to an understanding of VOD which occurs after bone marrow transplantation. We have used 800 polymorphic genetic markers scattered throughout the genome to identify the location of the genetic abnormality, and have localised the defect to a region of chromosome 2 which contains approximately 37 known and predicted genes. We now aim to determine which of the gene(s) in the candidate region is responsible for VODI, and plan to examine DNA from individuals who have had VOD after transplantation to determine if they have a related abnormality. Finding the VODI gene will benefit these families through the availability of carrier detection and may also lead to an understanding of the veno-occlusive disease that occurs after bone marrow transplantation.Read moreRead less
Manipulation Of Haematopoietic Stem Cell Niches To Improve Their Clinical Use
Funder
National Health and Medical Research Council
Funding Amount
$434,883.00
Summary
Haematopoietic stem cells (HSC) reside in adult bone marrow (BM) and make all blood and immune cells. HSCs can be damaged by chemotherapy leading to blood and BM failure. We have identified an adhesion molecule in the BM which regulates HSC behaviour. We anticipate that inhibiting this molecule will i) help minimise HSC damage during chemotherapy and ii) enhance the success of BM transplantation.
The transplantation of healthy stem cells from a donor into a recipient with blood cancer (stem cell transplantation) is the most effective curative therapy for the majority of patients. Unfortunately this process results in unwanted, often fatal, side effects including infection, a rejection process known as graft-versus-host disease and in some patients, the leukaemia still recurs. This research will refine new treatments focused on overcoming these limitations and improving transplant outcome
Recipient Bone Marrow Macrophages Contribute To Haematopoietic Stem Cell Transplantation Success
Funder
National Health and Medical Research Council
Funding Amount
$608,906.00
Summary
We propose an innovative approach to reduce risk and increase success of blood stem cell transplantation. We will determine whether a specialized cell within the transplant patient is required for donor stem cells to successfully take up residence and recreate the blood and immune system. We will test whether fortifying these specialized cells will improve transplantation outcomes, consequently increasing the number of transplants that can proceed and reducing potentially fatal complications.
Stem Cell Niches: Biology And Therapeutic Applications
Funder
National Health and Medical Research Council
Funding Amount
$640,210.00
Summary
This research aims to identify how stem cells are regulated in the body in order to improve therapies for blood disorders and abnormal bone formation after severe traumas. Targeting molecules that deregulate stem cells will lead to improved treatments for diseases with outcomes including improved treatments for blood stem cell transplantation, improved therapy in cancer patients and reduced complications of spinal cord injuries.
The Interplay Between IL-6 And GVHD On Anti-viral And Anti-leukaemic Immunity
Funder
National Health and Medical Research Council
Funding Amount
$489,376.00
Summary
Bone marrow transplantation can cure leukaemia but infection, graft-versus-host disease (GVHD) and leukaemia relapse remain challenging problems. We recently completed an early phase clinical study on GVHD prevention using interleukin-6 blockade. Interestingly, the rate of virus reactivation was also lower. This project will use a newly developed mouse model and stored clinical samples to understand the underlying mechanism and whether it also has an impact on anti-leukaemic immunity.