Vaccines aim to protect against future infections by inducing memory in the immune system so that the host can react quickly to the next challenge. Defence against viral infections and some cancers depends in part on activating CD8+ T cells, a class of white blood cell that can recognise and kill infected or malignant cells. The ideal vaccines against these challenges would therefore generate high numbers of long-lived CD8+ T cells that are programmed to make the right response if the infection ....Vaccines aim to protect against future infections by inducing memory in the immune system so that the host can react quickly to the next challenge. Defence against viral infections and some cancers depends in part on activating CD8+ T cells, a class of white blood cell that can recognise and kill infected or malignant cells. The ideal vaccines against these challenges would therefore generate high numbers of long-lived CD8+ T cells that are programmed to make the right response if the infection or tumour re-emerges. Little is known about the programming of memory CD8+ T cells. We have recently found that some of these cells have the potential to be reprogrammed to display different functions by exposure to new stimuli. This opens up the possibility that ineffective responses could be improved by using vaccination to control the production of these flexible or multipotential memory cells or to reprogram them once they are formed. Alternatively, effective responses might be subverted by pathogens to the detriment of the host. The goal of this project is to learn how the first exposure to an immune challenge influences the development of these multipotential memory CD8+ cells. Understanding the signals and processes that generate multipotential memory cells will be the first step towards developing ways to manipulate them to improve immune defence.Read moreRead less
Population Dynamics Of Tissue-specific Effector And Regulatory CD4+ T Cells
Funder
National Health and Medical Research Council
Funding Amount
$394,250.00
Summary
Survival of white blood cells in the body is an active process and is important for the maintainence of a T cell population which can recognise a wide variety of foreign antigens. At present the fate of T lymphocytes which recognise self antigens is unclear. Knowledge of the survival kinetics of self-reactive T lymphocytes and the mechanism by which they are regulated in the normal individual is crucial to be able to control the development of various diseases, including autoimmune diseases. Fro ....Survival of white blood cells in the body is an active process and is important for the maintainence of a T cell population which can recognise a wide variety of foreign antigens. At present the fate of T lymphocytes which recognise self antigens is unclear. Knowledge of the survival kinetics of self-reactive T lymphocytes and the mechanism by which they are regulated in the normal individual is crucial to be able to control the development of various diseases, including autoimmune diseases. From our previous studies of autoimmune gastritis we have generated cell lines of lymphocytes that recognise stomach-specific antigens and with these unique reagents we will perform experiments to determine the fate of these self-reactive T cells in a normal individual. Also we will determine the impact of different amounts of the tissue antigens on the survival and activation of self-reactive T cells, and finally how a special class of lymphocytes, know as regulatory lymphocytes, act in vivo to control the activity of self-reactive T cells. We will use not only classical immunological approaches to address these issues but also state of the art imaging, to visualise the nature of the cell interactions in living tissues. The information arising from this work will underpin strategies to selectively turn off self-reactive lymphocytes that cause disease, will form the basis of clinical development of cell based therapies to treat autoimmune diseases, and the imaging technologies developed in this grant will have wide applicability to the study of a range of immune responses.Read moreRead less
Establishment Of A Bank Of Third Party T Cells To Treat Virus Infections (that Are Resistant Or Unsuitable For Other Forms Of Antibiotic Therapy) In Immunocompromised And Transplant Patients Across Australia
Funder
National Health and Medical Research Council
Funding Amount
$811,530.00
Summary
Bone marrow transplantation can cure cancers of the blood but patients are susceptible to viral infections due to ongoing immune deficiency. We have shown you can grow immune cells in the laboratory and transfer this immunity to transplant recipients. While effective, this has not been widely adopted due to the time, complexity and costs of the process. We aim to address these issues by providing a treatment option for patients with life threatening infections using immediately available “off th ....Bone marrow transplantation can cure cancers of the blood but patients are susceptible to viral infections due to ongoing immune deficiency. We have shown you can grow immune cells in the laboratory and transfer this immunity to transplant recipients. While effective, this has not been widely adopted due to the time, complexity and costs of the process. We aim to address these issues by providing a treatment option for patients with life threatening infections using immediately available “off the shelf” immune cells.Read moreRead less
Exploiting the lymphatic system for next generation vaccine development . Vaccination is the most successful and cost-effective means of combating infectious diseases. This project will look at how vaccine adjuvants work and will help the development of new vaccines against infections in both animals and man. It will also promote the training of Australian scientists in the field of vaccine research and development.
Regulation Of T Cell Effector Function In Peripheral Tissues
Funder
National Health and Medical Research Council
Funding Amount
$698,550.00
Summary
Protection from infections relies on different types of immune cells. While some of these cells are found in the blood, others reside in peripheral tissues such as the skin. We will analyse the function of these peripheral immune cells to understand how they work to fight off infections. We will also investigate how so-called memory cells that permanently reside in peripheral tissues can protect from re-infection with similar bacteria or viruses.
The Biology Of Cervical Disc Damage And Stem Cell Applications For Repair.
Funder
National Health and Medical Research Council
Funding Amount
$82,554.00
Summary
Disruption of the cervical disc by degeneration or trauma is common and therefore a major public health issue causing significant pain and disability in the community. The understanding of the changes that occur in disc degeneration would be greatly enhanced by comparison with changes that occur in normal discs and in discs recently disrupted by trauma. Potential applications of adult stem cells or their derivatives for disc repair and regeneration will be explored.
Identifying The Ontogeny And Fate Of T Follicular Helper Cells By Two-photon Photoconversion
Funder
National Health and Medical Research Council
Funding Amount
$623,070.00
Summary
The aim of this proposal is to investigate immune cells called T follicular helper cells using a novel microscopy-based method that we have developed. This method lets us ‘tag’ these cells in a way that enables us to distinguish them from all other cells and follow them as they migrate to different immunological compartments during the response. T follicular helper cells are important for protective immune responses against pathogens and a better understanding of this T cell subset will aid vacc ....The aim of this proposal is to investigate immune cells called T follicular helper cells using a novel microscopy-based method that we have developed. This method lets us ‘tag’ these cells in a way that enables us to distinguish them from all other cells and follow them as they migrate to different immunological compartments during the response. T follicular helper cells are important for protective immune responses against pathogens and a better understanding of this T cell subset will aid vaccine design.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240100827
Funder
Australian Research Council
Funding Amount
$458,737.00
Summary
Delineating the developmental requirements for stem-like T cells. Stem-like CD8 T cells are critical for sustaining long-term systemic T cell activity. The signalling required for their development, however, remains elusive. Integrating multidisciplinary expertise, cutting-edge technology and highly innovative methods, this project aims to define the signalling cues provided by tissue microenvironment that control the development and maintenance of stem-like T cells, and thereby dictate systemic ....Delineating the developmental requirements for stem-like T cells. Stem-like CD8 T cells are critical for sustaining long-term systemic T cell activity. The signalling required for their development, however, remains elusive. Integrating multidisciplinary expertise, cutting-edge technology and highly innovative methods, this project aims to define the signalling cues provided by tissue microenvironment that control the development and maintenance of stem-like T cells, and thereby dictate systemic immunity. This project is expected to generate fundamental knowledge on basic immunology and T cell biology, which can benefit the academic, public health and biotechnology sectors by enhancing the international standing of Australian research on basic immunology and fostering new commercial opportunities. Read moreRead less
Characterisation And Development Of Type-2 NKT Cells
Funder
National Health and Medical Research Council
Funding Amount
$853,885.00
Summary
Humans defend themselves from foreign pathogens by mounting a protective immune response. Type-2 NKT cells recognise foreign lipid molecules and play a key role in immunity. This project is designed to understand to how Type-2 NKT cells develop within the body, how they recognise lipid molecules and how they carry out their immune functions. This work will have important implications in understanding the role of NKT cells in human health and disease.
Molecular And Cellular Control Of Human Th9 Cell Differentiation In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$550,888.00
Summary
T helper 9 (Th9) cells are a recently defined population of CD4+ T cells that have been implicated in immunological disorders ranging from allergy, asthma, inflammatory bowel disease, and cancer, to host defence against fungal and parasitic infections. As such, Th9 cells are extremely important to human health and disease. This project aims to define the mechanisms involved in the generation, regulation and function of human Th9 cells.