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Epigenetic Regulation Of CD8+ T Cell Function And Memory.
Funder
National Health and Medical Research Council
Funding Amount
$578,171.00
Summary
Upon virus infection, a subset of white blood cells, called killer T cells, are recruited to fight the infection. This proposal aims to examine molecular changes that occur within killer T cells and impart their specific function. We also aim to understand how killer T cells are _programmed� as they establish immunological memory. This proposal will provide insights important for the design and improvement of vaccine strategies to fight pathogens such as influenza, HIV and even tumors.
A New Approach To The Design And Evaluation Of T Cell Vaccines For Cancer And Infectious Disease.
Funder
National Health and Medical Research Council
Funding Amount
$394,137.00
Summary
Special white blood cells called dendritic cells teach the immune system to fight cancer and are a key component of therapeutic cancer vaccines. We identified a subtype of human dendritic cell that is predicted to be the most effective at mounting anti-cancer immune responses. We developed a novel antibody specific for these dendritic cells that can be used to deliver the vaccine directly to them and will use this to construct and validate a novel vaccine for cancer and viral infections.
The Genetics Governing The Specificity Of T Cell Receptors For Peptide-MHC
Funder
National Health and Medical Research Council
Funding Amount
$303,828.00
Summary
T lymphocytes play a pivotal role in the immune system by recognising virus-infected tissue through the use of highly specific cell surface receptors. These T cell receptors (TCR) recognise viral peptides (p) presented by MHC molecules on the surface of virus-infected cells. For a TCR to be successfully triggered, it must lock onto an exact 3-dimentional pMHC match. In this way, any given TCR must simultaneously recognise both the viral peptide and the MHC presenting it. Such recognition must be ....T lymphocytes play a pivotal role in the immune system by recognising virus-infected tissue through the use of highly specific cell surface receptors. These T cell receptors (TCR) recognise viral peptides (p) presented by MHC molecules on the surface of virus-infected cells. For a TCR to be successfully triggered, it must lock onto an exact 3-dimentional pMHC match. In this way, any given TCR must simultaneously recognise both the viral peptide and the MHC presenting it. Such recognition must be sensitive and precise since a false positive could result in destruction of healthy tissue. There are a huge variety of TCRs and pMHCs, but there are only a few examples where the precise molecular interactions within the TCR-pMHC complex are known. Surprisingly, these studies have shown very limited consistency in the way the TCRs bind the pMHCs and therefore, the structural rules that underlie why TCRs consistently bind MHC remains a mystery of critical importance to this fundamental feature of the immune system. In this proposal, we will attempt to elucidate the rules of TCR-pMHC engagement. Another question to be addressed in this proposal is: During a viral infection, why are certain TCRs chosen above others that also have the capacity to recognise the same viral peptide? By investigating exactly which feature-s of these receptors predisposes their supremacy, we may be better able to predict the outcome of a pathogen attack and to even one day build our own super receptors. Finally, this proposal will also investigate how natural mutations in TCR genes across the human population affect our individual responses to viruses. Overall, advances in each of these core areas of medical research will aid in the development of new intelligent vaccines and individualised drugs for the treatment of cancer and infectious disease.Read moreRead less
Investigations Into The Biology And Functionality Of The Human T Cell Receptor
Funder
National Health and Medical Research Council
Funding Amount
$424,262.00
Summary
T lymphocytes play a pivotal role in the immune system by recognising virus-infected tissue and tumour cells through the use of specific cell surface receptors called T cell receptors (TCR). This project will study why partcular TCRs are used by the immune system, and will also examine the specificity of T cell recognition by determine the range of molecules an individual T cell can recognise. The work will aid in the development of new intelligent vaccines for cancer and infectious disease.
The Role Of CCR6 In IL-17-producing CD8+ T Lymphocyte Activation And Trafficking
Funder
National Health and Medical Research Council
Funding Amount
$514,041.00
Summary
T lymphocytes play an important role in the control of infection, but can also contribute to diseases such as autoimmune disease and cancer. This research will identify the function of a new subtype of T lymphocyte and determine whether inhibiting its function prevents disease.
Upregulation Of Chemokine Receptor Expression And Function On CD4+ T Cells In Primary And Secondary Immune Responses
Funder
National Health and Medical Research Council
Funding Amount
$469,500.00
Summary
This research will begin to determine the significance of changes in the amount of recently-discovered proteins on the surface of cells called T lymphocytes. These cells control immune responses and move throughout the body to do this. Sometimes, they are activated inappropriately and cause diseases like asthma, arthritis and multiple sclerosis and other times they need assistance for activation (vaccination). It is therfore important to understand how the movement of these cells through the bod ....This research will begin to determine the significance of changes in the amount of recently-discovered proteins on the surface of cells called T lymphocytes. These cells control immune responses and move throughout the body to do this. Sometimes, they are activated inappropriately and cause diseases like asthma, arthritis and multiple sclerosis and other times they need assistance for activation (vaccination). It is therfore important to understand how the movement of these cells through the body is controlled. A better understanding of this process shuld allow us to design better ways to control it, thereby controlling the negative aspects of T lymphocyte activation.Read moreRead less