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The Role Of Epigenetic And Transcriptional Regulation In CD8+ T Cell Effector Gene Expression.
Funder
National Health and Medical Research Council
Funding Amount
$72,571.00
Summary
All cells contain DNA that is tightly wrapped around proteins, whereby changes in the structure allow for the expression of proteins. Cells of the immune system express proteins that can resolve viral infections. This study plans to examine the factors mediating the changes in DNA that allow for the expression of these proteins in immune cells. Insights will enable a greater understanding of how these proteins are generated and maintained, and hence will have implications for vaccine design.
Investigating The Delivery Of Cytotoxic T Cell Lytic Granules And The Microenvironment Of The Immunological Synapse
Funder
National Health and Medical Research Council
Funding Amount
$355,169.00
Summary
T cells recognise infected or cancer cells and eliminate them from the body. They kill their targets by tightly attaching and releasing toxic proteins, which cause the target to undergo cell suicide. This research will use high resolution imaging to investigate the environment of the synapse between the two cells and understand parameters required for the delivery of a lethal hit. This will provide powerful insights into the working of the cell, and may identify novel intervention targets
Long-lived CD8 T Cell Responses Induced By A Recombinant Cytomegalovirus Vector
Funder
National Health and Medical Research Council
Funding Amount
$234,750.00
Summary
The priming of the immune system to protect against infection and disease is an important means to alleviate these conditions. Current vaccination technologies often rely on multiple inoculations (prime-boosting). In addition, specific priming of the immune system against pathogens that target mucosal sites has been difficult and often lacks efficacy resulting in temporary or variable protection. Using a well developed mouse model for a common human virus, we have explored the potential of this ....The priming of the immune system to protect against infection and disease is an important means to alleviate these conditions. Current vaccination technologies often rely on multiple inoculations (prime-boosting). In addition, specific priming of the immune system against pathogens that target mucosal sites has been difficult and often lacks efficacy resulting in temporary or variable protection. Using a well developed mouse model for a common human virus, we have explored the potential of this agent as a vaccine agent, making use of its long term persistence in the infected host to provide continued antigenic stimulation of the immune system. We have found that very strong and long lasting responses can be elicited after a single inoculation of avirulent virus. In this study, this effect will be further explored and developed.Read moreRead less
The Function Of Transcription Factor SCL In T Cell Development.
Funder
National Health and Medical Research Council
Funding Amount
$504,750.00
Summary
SCL is a gene which is abnormally expressed in a large percentage of human T cell leukaemias. Mouse models that increase SCL levels have demonstrated that T cell maturation is abnormally affected by SCL. Thus, providing a clue as to how T cell leukemias arise. By utilising recombinant DNA technology we are now able to control SCL levels in T cell maturation. We can either increase the level of SCL using pharmacological reagents or we can genetically remove SCL from maturing T cells. This double- ....SCL is a gene which is abnormally expressed in a large percentage of human T cell leukaemias. Mouse models that increase SCL levels have demonstrated that T cell maturation is abnormally affected by SCL. Thus, providing a clue as to how T cell leukemias arise. By utilising recombinant DNA technology we are now able to control SCL levels in T cell maturation. We can either increase the level of SCL using pharmacological reagents or we can genetically remove SCL from maturing T cells. This double-edged approach will allow us to monitor the effects of SCL on maturing T cells with a precision that has never previously been achieved. Results from this approach will provide new insights into how T cell leukaemia develops and provide the foundation for new rational based treatments.Read moreRead less
Investigating The Role Of TCR Avidity In Influenza Virus-specific CD8 T Cell Responses
Funder
National Health and Medical Research Council
Funding Amount
$83,142.00
Summary
One of the constituents of the immune system is the cytotoxic, or killer, T cells and these are important in the overall protection from viral infection. Activation of these T cells is mediated by signalling through the T cell receptor (TCR). This study will definitively determine how the strength with which the TCR binds to the activating ligand, can influence the quality of virus-specific T cell immune responses after infection. This has implications for vaccine design.
Transcriptional Regulation Of Terminal T Cell Differentiation By Blimp-1
Funder
National Health and Medical Research Council
Funding Amount
$411,404.00
Summary
Memory cells stand at the end of immune reactions and determine the success or failure of vaccination. T cells in are considered essential in tumour surveillance, clearance of infections and in providing help for antibody decretion. Blimp-1 is a major factor controling the differentiation of effector T cells. We aim to study its role in the generation of memory T cells which will help to develop better stratagies for immunization and for the treatment of immunodedeficiency and autoimmunity.
Role Of Dendritic Cell Subsets In The Generation Of CD4 T Cell Memory
Funder
National Health and Medical Research Council
Funding Amount
$563,554.00
Summary
This project studies the mechanisms responsible for establishing immunologic memory that is generated by vaccination and determines its efficacy. We aim to identify and study previously unacknowledged factors that critically affect the efficacy of vaccination. The results will be significant for both preventative and therapeutic vaccination (cancer, autoimmunity) and will help us to design new vaccines to improve immune function in infection, autoimmunity and cancer.