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Pandemic Influenza Vaccine: Exploiting The Conserved HA Cleavage Site
Funder
National Health and Medical Research Council
Funding Amount
$243,300.00
Summary
Influenza virus needs to cleave its surface spike protein, hemagglutinin or HA, to become mature and infectious. This project is aimed at producing a vaccine that will block the cleavage thus rendering the virus non-infectious. To achieve this, we will use synthetic fragments (called peptides) of the viral HA spike protein mimicking its cleavage site to immunize mice. This will produce specific antibodies that will bind to the cleavage site while the virus is inside the infected cell, thus preve ....Influenza virus needs to cleave its surface spike protein, hemagglutinin or HA, to become mature and infectious. This project is aimed at producing a vaccine that will block the cleavage thus rendering the virus non-infectious. To achieve this, we will use synthetic fragments (called peptides) of the viral HA spike protein mimicking its cleavage site to immunize mice. This will produce specific antibodies that will bind to the cleavage site while the virus is inside the infected cell, thus preventing the viral spike protein from being cleaved and remain immature. This idea is particularly suited to fight the bird flu, as all pathogenic bird influenza viruses cleave HA spike proteins within the infected cell.Read moreRead less
Chimeric Virus-like Particles (VLPs) Displaying H1, H3 And H5 Haemagglutinins - Construction And Immunogenicity
Funder
National Health and Medical Research Council
Funding Amount
$207,543.00
Summary
Virus-like particles (VLPs) provoke strong immune responses in the body. We have developed a novel VLP system that allows the production of VLPs containing foreign vaccine antigens of much larger size than previously possible, and have shown that these VLPs provoke strong immune responses in mice without the use of adjuvants. The capacity of these VLPs is large enough to accommodate the most important vaccine antigen of influenza, the haemagglutinin (HA) molecule. We will test whether VLPs can b ....Virus-like particles (VLPs) provoke strong immune responses in the body. We have developed a novel VLP system that allows the production of VLPs containing foreign vaccine antigens of much larger size than previously possible, and have shown that these VLPs provoke strong immune responses in mice without the use of adjuvants. The capacity of these VLPs is large enough to accommodate the most important vaccine antigen of influenza, the haemagglutinin (HA) molecule. We will test whether VLPs can be produced containing each of the three most important HA types _ H1 and H3 that are currently circulating in man, and H5 (avian) that is considered a pandemic threat. VLPs will be tested for their ability to induce neutralizing antibody and cellular immune responses in mice, and for their ability to protect ferrets from influenza infection. If successful, the HA-VLP system would provide a method for the rapid production of new influenza vaccines using large-scale fermentation technology as for hepatitis B and many other vaccines, rather than eggs or cell culture as used for current influenza vaccines.Read moreRead less
Enhancing Australia's Pandemic Influenza Vaccine Output By Increasing The Yeild Of Vaccine From Eggs
Funder
National Health and Medical Research Council
Funding Amount
$251,517.00
Summary
Influenza epidemics cause significant morbidity and mortality, particularly amongst the young and elderly. Unlike other vaccines, a new flu vaccine formulation needs to be prepared each year from the currently circulating strain. This involves a long process of preparing new seed vaccine stock, which is then tested, manufactured and distributed. The situation is even more complicated by the ability of different influenza strains to reassort with others. An example of current major concern is the ....Influenza epidemics cause significant morbidity and mortality, particularly amongst the young and elderly. Unlike other vaccines, a new flu vaccine formulation needs to be prepared each year from the currently circulating strain. This involves a long process of preparing new seed vaccine stock, which is then tested, manufactured and distributed. The situation is even more complicated by the ability of different influenza strains to reassort with others. An example of current major concern is the possibility of deadly avian flu viruses, such as H5N1, to gain the capacity to directly infect humans by recombining with a human strain and thereby starting a new global pandemic. When the next influenza pandemic occurs, the availability of a vaccine will be of the highest priority and early supply of vaccines will save millions of lives. Since vaccination is the only sustainable defense, we face an urgent need to have the capacity to supply large numbers of vaccine doses of influenza vaccines within a short period of time. Currently, the only way of producing flu vaccines is in eggs. The speed of vaccine supply is totally dependant on the yield of vaccine from eggs and the number of eggs that can be processed at any one time. Since there are severe constraints on the number of eggs that can be simultaneously processed, the limiting factor that can be addressed is the actual yield of vaccine per egg. The aim of this project is the develop methods that allow higher levels of vaccine virus to grow in eggs. We will take a multi-pronged approach to enhancing influenza vaccine production that are directed toward increasing the capacity of eggs to promote virus replication, as well as towards the vaccine strain to boost its ability to replicate in the egg. The outcome will be an enhanced capacity for vaccine manufacturers to quickly and effectively expand vaccine supplies which will directly impact on global morbidity and mortality during a flu pandemic.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 project will develop and test a new cell-based anticancer vaccine for patients with Prostate cancer. The collaboration will involve French, Italian, Austrian and German researchers. Blood will be taken from patients in the clinical trial, the patient's cells will be converted into a cell vaccine, and these cells will be labelled with a radioactive tracer and re-injected into the host. Australian researchers at the Centre for Blood Cell Therapies at the Peter MacCallum Cancer Centre will the ....This project will develop and test a new cell-based anticancer vaccine for patients with Prostate cancer. The collaboration will involve French, Italian, Austrian and German researchers. Blood will be taken from patients in the clinical trial, the patient's cells will be converted into a cell vaccine, and these cells will be labelled with a radioactive tracer and re-injected into the host. Australian researchers at the Centre for Blood Cell Therapies at the Peter MacCallum Cancer Centre will then track the performance of the vaccine using advanced diagnostic imaging to determine how effective the vaccine is in stimulating the body's own defence mechanisms to fight the cancer. Multiple versions of the treatment are being developed by the international collaboration and the Institute will help determine which approach is most effective in combating cancer. The Peter MacCallum Cancer Centre is the foremost centre worldwide for this type of cell tracking study.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
The number of Australians with dementia is increasing and so therefore is the frequency of people with dementia presenting to general practice. There is a recent evidence based clinical practice guideline to inform the diagnosis and management of people with dementia and the support of their carers. Many of the recommendations from this guideline are relevant to Australian general practitioners. Strategies to implement guidelines into practice are needed in all areas of health care, but changing ....The number of Australians with dementia is increasing and so therefore is the frequency of people with dementia presenting to general practice. There is a recent evidence based clinical practice guideline to inform the diagnosis and management of people with dementia and the support of their carers. Many of the recommendations from this guideline are relevant to Australian general practitioners. Strategies to implement guidelines into practice are needed in all areas of health care, but changing clinical practice is complex and a body of research developing methods of identifying barriers to specific practice changes is emerging. This project aims to support GPs in improving the general practice based care of people with dementia, and so improve their quality of life. In addition we aim to contribute to the body of knowledge about how to bring about practice change and implement a clinical practice guideline. We plan to design a strategy for implementing this new guideline into practice, working with GPs to change their practice where needed. We will test the effect of this strategy on the care of people with dementia, on their quality of life and on that of their carers.Read moreRead less