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The Opposing Genetic Networks Underlying Plasticity Of Humoral Responses
Funder
National Health and Medical Research Council
Funding Amount
$667,783.00
Summary
The immune system makes antibody to clear bacterial and viral pathogens. Specialised types of antibody are needed for different pathogens. This project will study genetic changes that determine the specificity of an antibody response. Regulation of these genes may prohibit production of antibodies and inflammatory mediators that attack the body rather than foreign pathogens. Understanding these processes will identify points of therapeutic intervention for patients with immune disorders.
I am a molecular-cell biologist investigating the genetic control of lymphocyte differentiation. I study the mechanisms of action of transcription factors expressed specifically in B cells that regulate B lymphocyte specialisation and function, that determine the ability of mature B cells to respond to signals from other cells or from invading pathogens, and that enable the differentiation of antibody-secreting cells, the effectors of the B cell lineage. I lead the commercialisation efforts of o ....I am a molecular-cell biologist investigating the genetic control of lymphocyte differentiation. I study the mechanisms of action of transcription factors expressed specifically in B cells that regulate B lymphocyte specialisation and function, that determine the ability of mature B cells to respond to signals from other cells or from invading pathogens, and that enable the differentiation of antibody-secreting cells, the effectors of the B cell lineage. I lead the commercialisation efforts of our research Program.Read moreRead less
This program brings together a team of researchers from The Walter and Eliza Hall Institute of Medical Research to study how the body regulates antibody production to fight disease. Antibodies are made by B-cells and are essential for a functional immune system. B cells circulate in the body, searching for signs of infection. When they encounter an invader, they mature, with the help of other immune cells, into antibody-producing cells. A small proportion of the cells are set aside as _memory� c ....This program brings together a team of researchers from The Walter and Eliza Hall Institute of Medical Research to study how the body regulates antibody production to fight disease. Antibodies are made by B-cells and are essential for a functional immune system. B cells circulate in the body, searching for signs of infection. When they encounter an invader, they mature, with the help of other immune cells, into antibody-producing cells. A small proportion of the cells are set aside as _memory� cells that can rapidly become antibodyproducing cells should the same infection occur again in the future. This is the basis of vaccination. This program aims to understand how a B cell changes into an antibody-producing cell, by studying the genes that are known to be required for the cells to form, or to do their work. We will study animals whose immune systems are under- or over-active, to find out what part of the antibody-producing process is faulty. Using this information, we hope eventually to be able to study diseases of antibody producing cells in humans (as occur in allergy, asthma, rheumatoid arthritis and leukaemia), to be able to identify the precise cause of the problem, and to suggest a therapy. This information may also be used to improve the outcome of vaccination where an enhanced antibody response is desired.Read moreRead less
Mechanisms Controlling Antibody Production By Modulating B Cell Antigen Receptor Signalling
Funder
National Health and Medical Research Council
Funding Amount
$536,628.00
Summary
This project will analyse mechanisms that regulate antibody production in health and disease. In health, antibodies are normally made exclusively against infectious agents, providing long-lasting immunity. Unknown errors in the control of antibody production result in autoimmune diseases such as systemic lupus or rheumatoid arthritis, where antibodies are made against parts of our own bodies, or result in allergies where antibodies are made against innocuous elements of our environment, or resul ....This project will analyse mechanisms that regulate antibody production in health and disease. In health, antibodies are normally made exclusively against infectious agents, providing long-lasting immunity. Unknown errors in the control of antibody production result in autoimmune diseases such as systemic lupus or rheumatoid arthritis, where antibodies are made against parts of our own bodies, or result in allergies where antibodies are made against innocuous elements of our environment, or result in uncontrolled B cell accumulation in lymphoma, leukemia and myeloma. In order to develop rational, specific methods for treating these diseases, it is necessary to identify and understand the biochemical mechanisms that normally control antibody formation against infectious agents, self components, and innocuous environmental agents. The project focuses on defining the biochemical mechanisms by which the antibody-forming cells, B lymphocytes, sense infectious, innocuous, or self components. These cells carry specific receptors that bind these components and transmit signals into the B lymphocyte. The research will determine how different types of signal are transmitted by the receptor so that, normally, large amounts of antibody are made against infectious agents but very little antibody is made against self components, and that B cell accumulation is tightly limited. By identifying how the types of signals are changed, the results of this project will reveal control mechanisms that may be altered in autoimmunity, allergy, immune deficiency, or lymphoma, and that may be able to be used as drug targets to cure these diseases.Read moreRead less