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Autoimmune Polyendocrine Syndrome Type 1 - A Rare Disorder Of Childhood As A Model Of Autoimmunity
Funder
National Health and Medical Research Council
Funding Amount
$506,943.00
Summary
This project will analyse the mechanisms and causes of diabetes and other autoimmune diseases where the immune system damages particular organs of the body. Diabetes is a national health priority, and autoimmune diseases collectively affect one in every twenty Australians. The project will focus on a recently discovered gene, Autoimmune Regulator (AIRE) that is crucial for protection against autoimmune disease, which Prof Goodnow's team has shown to stop forbidden clones of T lymphocytes in the ....This project will analyse the mechanisms and causes of diabetes and other autoimmune diseases where the immune system damages particular organs of the body. Diabetes is a national health priority, and autoimmune diseases collectively affect one in every twenty Australians. The project will focus on a recently discovered gene, Autoimmune Regulator (AIRE) that is crucial for protection against autoimmune disease, which Prof Goodnow's team has shown to stop forbidden clones of T lymphocytes in the immune system from attacking our own organs. Inherited defects in the AIRE gene cause a devastating illness, Autoimmune Polyendocrine Syndrome 1, and provide an unparalleled insight into mechanisms of common autoimmune diseases such as Type 1 diabetes, thyroid diseases, pernicious anemia, and Addison's disease. By joining forces with Dr H Scott and a multidisciplinary consortium in Europe, Prof Goodnow's team will investigate how the processes controlled by the AIRE gene cooperate with other genes and mechanisms to prevent autoimmune disease. The work will chart the different control systems that normally protect us from autoimmune diseases, and provide a rational basis for developing new ways to treat and prevent autoimmune diseases. The NHMRC funding enables two leading Australian groups at The Australian National University and at the Walter and Eliza Hall Institute to amplify their world-leading individual efforts by leveraging a set of complementary technologies and clinical resources of an interdisciplinary team in Europe. Goodnow's team has already proved the benefit of this type of Australian-European collaboration. Their work discovering the function of the AIRE gene in stopping forbidden T cells depended on a close collaboration with the genetics group in Finland led by Prof Leena Peltonen, whose team had originally discovered the AIRE gene as part of a large European consortium. Scott's team was part of a parallel European-Japanese consortium that discovered the AIRE gene at the same time. The EURAPS project will build on these collaborative discoveries to chart the mechanisms of autoimmune disease and how they can be cured or prevented.The NHMRC funding for the Australian teams is amplified to a multiplier of twenty-fold by European funding for the overall EURAPS project. This represents a strategic investment to ensure Australian health research remains at the forefront of advances in prevention and treatment of chronic diseases.Read moreRead less
The Use Of Inulin-based Adjuvants To Enhance The Effectiveness And Population Coverage Of Influenza Vaccination
Funder
National Health and Medical Research Council
Funding Amount
$250,393.00
Summary
A major obstacle in the development of effective vaccines to protect against bird flu (avian influenza) is the difficulty in producing enough vaccine in a short enough time to be able to protect the population should bird flu become a problem in the human population. Our research is focused on a technique to make vaccines much more effective and thereby reduce the amount of vaccine needed for each person. This would allow many more people to be protected with the same amount of vaccine. This tec ....A major obstacle in the development of effective vaccines to protect against bird flu (avian influenza) is the difficulty in producing enough vaccine in a short enough time to be able to protect the population should bird flu become a problem in the human population. Our research is focused on a technique to make vaccines much more effective and thereby reduce the amount of vaccine needed for each person. This would allow many more people to be protected with the same amount of vaccine. This technology is known as a vaccine adjuvant and we have developed a unique adjuvant based on a natural plant sugar called inulin that has the potential to dramatically enhance existing and new flu vaccines.Read moreRead less
Mucosal Vaccine For Influenza On Inactivated Virus And Mannan
Funder
National Health and Medical Research Council
Funding Amount
$131,993.00
Summary
Influenza is a respiratory disease that causes significant morbidity and mortality worldwide. Current influenza vaccines are a preparation of three currently circulating inactivated influenza strains that induces an antibody response that can combat the virus and therefore infection. Despite the availability of a vaccine new approaches are needed to increase the activity, usage and distribution. To this end several approaches based on using additional agents to increase the immunogenicity and ne ....Influenza is a respiratory disease that causes significant morbidity and mortality worldwide. Current influenza vaccines are a preparation of three currently circulating inactivated influenza strains that induces an antibody response that can combat the virus and therefore infection. Despite the availability of a vaccine new approaches are needed to increase the activity, usage and distribution. To this end several approaches based on using additional agents to increase the immunogenicity and needle free delivery are being explored. We have a natural sugar based compound that can be used to increase the body's immunity to cancers and infectious agents such as bacteria and viruses. When these preparations are applied into the nostril of mice they generate antibody responses to the infectious agent in the lungs, gut, tears, saliva that can act as a barrier to infectious agents. We are incorporating an inactive flu virus with this natural sugar to investigate if it produces antibody that can protect mice and ferrets from the flu virus. This method will be first tried with the human flu virus and if successful will be tried with the bird flu virus. If the preparation can protect mice and ferrets from human or bird flu infection it could develop into a human vaccine against bird flu. Since it can be administered by the nose it will be widely used and can be used readily without qualified personnel in the case of a pandemic.Read moreRead less
Roles Of Enzymes Of The Dipeptidyl Peptidase Gene Family In Human Liver
Funder
National Health and Medical Research Council
Funding Amount
$79,750.00
Summary
Chronic liver diseases, particularly those caused by autoimmune disease, alcohol and Hepatitis B and C virus infection, are major causes of morbidity and mortality in our community. They are characterised by progressive scarring of the liver which finally leads to liver failure and the need in many cases for organ transplantation. Each year 15,000 Australians become infected, probably for life, with hepatitis C virus. Unless more effective treatments are developed approximately 20% of these infe ....Chronic liver diseases, particularly those caused by autoimmune disease, alcohol and Hepatitis B and C virus infection, are major causes of morbidity and mortality in our community. They are characterised by progressive scarring of the liver which finally leads to liver failure and the need in many cases for organ transplantation. Each year 15,000 Australians become infected, probably for life, with hepatitis C virus. Unless more effective treatments are developed approximately 20% of these infections will progress to liver failure or liver cancer within 30 years. Diabetes afflicts 150 million people, and 90% have Type 2 diabetes. We request funding of our research on a family of enzymes highly prospective as targets for novel therapies for these diseases. We are internationally recognised experts on this enzyme family and on liver disease. The prototype member of this enzyme family, dipeptidyl peptidase (DP) IV, is being targeted by novel drugs that are in phase III clinical trials for Type 2 diabetes. Family member fibroblast activation protein (FAP) is targeted by novel anti-cancer drugs We were first to clone and lodge patent applications for two new enzymes of this family, DP8 and DP9. Our research proposal would lead to determination of whether FAP, DP8 and-or DP9 are valuable targets for novel liver disease therapeutics and facilitate generating the development of such therapeutics by a more thorough understanding of the activities and roles of these enzymes Completion of this project will greatly increase our understanding of these enzymes and their roles in chronic liver injury. This work can potentially lead to the development of specific inhibitors of enzyme function designed to relieve liver damage.Read moreRead less
Assessment Of Alpha-galactosylceramide As A Novel Adjuvant For Pandemic Influenza: A Virua Vaccine
Funder
National Health and Medical Research Council
Funding Amount
$220,042.00
Summary
The occurrence of human infections with pathogenic avian H5N1 Influenza A viruses was the first documentation of these viruses demonstrating an ability to directly transmit from birds to humans. The virulent nature of these infections, and the fact that there is no pre-existing immunity to these viruses in the human population has raised the concern that these viruses may emerge to cause the next influenza pandemic. Vaccination is our most effective way of protecting against influenza infection, ....The occurrence of human infections with pathogenic avian H5N1 Influenza A viruses was the first documentation of these viruses demonstrating an ability to directly transmit from birds to humans. The virulent nature of these infections, and the fact that there is no pre-existing immunity to these viruses in the human population has raised the concern that these viruses may emerge to cause the next influenza pandemic. Vaccination is our most effective way of protecting against influenza infection, however there are no commercially available avian influenza vaccines available. Moreover, recent evidence suggests current vaccines strategies may be less than effective. This proposal aims to evaluate the efficacy of a novel vaccine strategy that promotes immune protection against a potential pandemic influenza strain.Read moreRead less
This study will examine cellular immunity to the avian H5 influenza in people who have been previously infected with the currently circulating strains of H1 and H3 influenza, or in those who have been recently vaccinated with current influenza vaccines. This will give us an idea if there is any cross reactive immunity that may assist in developing immunity to pandemic strains of avian influenza, or may provide help in making antibody responses sooner to avian influenza vaccines once they are dev ....This study will examine cellular immunity to the avian H5 influenza in people who have been previously infected with the currently circulating strains of H1 and H3 influenza, or in those who have been recently vaccinated with current influenza vaccines. This will give us an idea if there is any cross reactive immunity that may assist in developing immunity to pandemic strains of avian influenza, or may provide help in making antibody responses sooner to avian influenza vaccines once they are developed. We will also establish assays to determine how immunogenic some new avian influenza vaccines are in mice.Read moreRead less
Gamma-ray Inactivated Influenza A Virus Vaccine For Cross-protective T Cell Immunity
Funder
National Health and Medical Research Council
Funding Amount
$239,963.00
Summary
Although there are new antiviral drugs that appear to be effective against influenza virus, the far more costeffective and efficient means to combat an influenza pandemic would be by vaccination. Current influenza vaccines employ virus preparations that are inactivated by chemical treatment. The inactivated vaccines, which function mostly by inducing antibody against the virus, have to be reformulated almost every year to take account of the changing virus because the antibodies recognize the vi ....Although there are new antiviral drugs that appear to be effective against influenza virus, the far more costeffective and efficient means to combat an influenza pandemic would be by vaccination. Current influenza vaccines employ virus preparations that are inactivated by chemical treatment. The inactivated vaccines, which function mostly by inducing antibody against the virus, have to be reformulated almost every year to take account of the changing virus because the antibodies recognize the viral surface which is prone to mutation. Accordingly, in terms of the threatening H5N1 avian influenza pandemic, it is not known if an inactivated vaccine based on the circulating H5N1 strain will be effective if the virus mutates to adapt to efficient growth and spread in the human population. In contrast to the antibody response against influenza virus, the cytotoxic T cell response is broadly crossreactive between heterologous influenza virus strains. Live virus infection efficiently induces cytotoxic T cell immunity which plays an important role in reducing disease severity and mortality following infection with a second, heterologous influenza virus, although infection per se is not prevented. Accordingly, vaccination strategies that elicit cytotoxic T cell memory should be given urgent consideration in the preparation against an influenza pandemic. We have found that the use of gamma-irradiation (in contrast to chemical treatment) for the preparation of inactivated experimental vaccines against influenza and other viruses does not destroy the ability of the vaccines to elicit cytotoxic T cell immunity. The gamma-ray inactivated vaccines conferred protection against lethal challenge with heterologous influenza virus strains in mice. This proposal is aimed at extending this novel finding to avian influenza viruses and to uncover the mechanisms involved in the cytotoxic T cell immunogenicity of gamma-ray inactivated vaccines.Read moreRead less
Genomic And Proteomic Profiling Of Dendritic Cell Heterogeneity
Funder
National Health and Medical Research Council
Funding Amount
$1,971,250.00
Summary
Dendritic cells (DC) present antigens to T cells and regulate immunity and tolerance. DC are heterogeneous, comprising seven functionally distinct subsets. We will use genomics and proteomics to identify the plasma membrane and endosomal proteins that underpin this functional heterogeneity. Such proteins are potential targets for improved protocols of vaccination and prevention of autoimmunity. This project will thus provide further opportunities for high-quality research and commercialisation.
Self Adjuvanting CTL-Based Influenza Vaccines For Human Use
Funder
National Health and Medical Research Council
Funding Amount
$214,842.00
Summary
This project will generate novel vaccines that elicit cell-mediated immunity against influenza infection. The vaccines are totally synthetic and therefore not constrained by the limitations in manufacturing which currently confront egg-grown vaccines. These vaccines induce very strong immune responses because they target dendritic cells which are pivotal for induction of all immune responses. This targeting capability is due to a simple lipid molecule incorporated into the vaccine which is recog ....This project will generate novel vaccines that elicit cell-mediated immunity against influenza infection. The vaccines are totally synthetic and therefore not constrained by the limitations in manufacturing which currently confront egg-grown vaccines. These vaccines induce very strong immune responses because they target dendritic cells which are pivotal for induction of all immune responses. This targeting capability is due to a simple lipid molecule incorporated into the vaccine which is recognised by specific receptors on the surface of dendritic cells and also causes their maturation, a step which is essential for recognition by the immune system of potential pathogens. The technology to design and assemble these new vaccines is already.Read moreRead less