Using RNA interference to combat the worst emerging disease of wildlife. This project aims to develop a novel method of disease control in wildlife. It will use recent advances in RNA interference technology to knockdown virulence genes in an emerging pathogen that threatens biodiversity. Pathogens such as the amphibian chytrid fungus continue to cause widespread extinction and urgently require better control methods. RNA interference has been used to increase disease resistance to fungi in plan ....Using RNA interference to combat the worst emerging disease of wildlife. This project aims to develop a novel method of disease control in wildlife. It will use recent advances in RNA interference technology to knockdown virulence genes in an emerging pathogen that threatens biodiversity. Pathogens such as the amphibian chytrid fungus continue to cause widespread extinction and urgently require better control methods. RNA interference has been used to increase disease resistance to fungi in plants but adapting this approach for animals will have wide relevance in combatting fungi and other pathogens. The specific outcomes of this method will be to increase survival rates in a broad range of frog species to improve the success of captive release programs worldwide and hence save frogs from extinction.Read moreRead less
Linking immunomodulation and latency in alphaherpesvirus infection. Herpesviruses cause major diseases in humans and all domestic animal species. Latency forms a significant part of the evolutionary success of herpesviruses, by enabling transmission of the virus throughout the lifetime of the host. Our work has shown that an alphaherpesvirus protein can divert the host’s immune response to become more antibody-mediated and less T cell-mediated. This study explores the consequences of this immune ....Linking immunomodulation and latency in alphaherpesvirus infection. Herpesviruses cause major diseases in humans and all domestic animal species. Latency forms a significant part of the evolutionary success of herpesviruses, by enabling transmission of the virus throughout the lifetime of the host. Our work has shown that an alphaherpesvirus protein can divert the host’s immune response to become more antibody-mediated and less T cell-mediated. This study explores the consequences of this immune diversion, and examines whether this reduced T cell response enables the development of latent infections. Disrupting the virus-host balance by alterations to this conserved viral protein will enable novel approaches to controlling these economically significant viruses.Read moreRead less
Host-tumour interplay in Tasmanian devils with devil facial tumour disease: can immune cells be harnessed for therapy? Tasmanian devils only exist naturally in Tasmania and Devil Facial Tumour Disease, an infectious cancer, could cause the extinction of the Tasmanian devil. This project will determine if Devil Facial Tumour Disease reduces the effectiveness of the devil's immune system and test if activated immune cells can protect against this disease.
Role of Pasteurella surface polysaccharides in pathogenesis and immunity. Livestock infections cause major economic losses worldwide. The bacterium Pasteurella multocida causes multiple diseases in a range of livestock, including hemorrhagic septicaemia in cattle and fowl cholera in poultry. Two surface polysaccharide structures, capsule and lipopolysaccharide, are crucial for P. multocida to cause disease. Our data indicate that varying the amount/content of these structures also affects vaccin ....Role of Pasteurella surface polysaccharides in pathogenesis and immunity. Livestock infections cause major economic losses worldwide. The bacterium Pasteurella multocida causes multiple diseases in a range of livestock, including hemorrhagic septicaemia in cattle and fowl cholera in poultry. Two surface polysaccharide structures, capsule and lipopolysaccharide, are crucial for P. multocida to cause disease. Our data indicate that varying the amount/content of these structures also affects vaccine performance. This project aims to identify how the production of these P. multocida structures are controlled and if changes to these structures affect its ability to infect different animals/birds. Using this information, the project aims to develop state-of-the-art livestock vaccines with superior disease coverage.Read moreRead less
Molecular approaches to limit herpesvirus recombination. This project aims to generate safer attenuated herpesvirus vaccines for use in veterinary medicine by genetically manipulating the herpesvirus genome to reduce virus recombination. Recombination is recognised as a safety concern for a range of attenuated herpesvirus vaccines. This project is expected to generate viruses that have an impaired capacity to recombine with other viruses. These viruses will then be tested as candidate vaccines f ....Molecular approaches to limit herpesvirus recombination. This project aims to generate safer attenuated herpesvirus vaccines for use in veterinary medicine by genetically manipulating the herpesvirus genome to reduce virus recombination. Recombination is recognised as a safety concern for a range of attenuated herpesvirus vaccines. This project is expected to generate viruses that have an impaired capacity to recombine with other viruses. These viruses will then be tested as candidate vaccines for use in veterinary medicine. This offers a new approach to developing safer veterinary vaccines that will benefit our important animal industries.Read moreRead less
Evaluating host-parasite interplay in individual tissues. The immune system of the host and the infecting parasite has coevolved into a sophisticated balance of power. This project will explore this balance using Schistosoma japonicum infection in sheep and determine immune mechanisms unleashed by the host in various tissues as well as the response of the parasite to these attacks.
Functional identification of vaccine targets in pathogenic mycoplasmas. Mycoplasmas are important bacterial pathogens in domestic animals that are incompletely controlled by current vaccines. As a result current control measures for the diseases they cause rely on ongoing treatment with antibiotics. This project will aim to use functional genomics and metabolomics to determine the function of specific surface proteins of a model mycoplasma to identify targets for novel approaches to vaccines aga ....Functional identification of vaccine targets in pathogenic mycoplasmas. Mycoplasmas are important bacterial pathogens in domestic animals that are incompletely controlled by current vaccines. As a result current control measures for the diseases they cause rely on ongoing treatment with antibiotics. This project will aim to use functional genomics and metabolomics to determine the function of specific surface proteins of a model mycoplasma to identify targets for novel approaches to vaccines against these pathogens, and to then assess the potential for inclusion of these proteins in vaccines. Ultimately this will lead to improved vaccines against these important pathogens, improving agricultural productivity and reducing the use of antibiotics in intensively raised livestock.Read moreRead less
Blocking immune responses: a critical factor in herpesvirus virulence? The horse and poultry industries are two large, primarily rural based livestock production industries that are major contributors to the national economy. The research proposed in this project will improve our understanding of the pathogenesis of two important viral pathogens that are each a significant cost to their respective industry, and thus will ultimately reduce the cost of these two viruses to industry. In addition, ....Blocking immune responses: a critical factor in herpesvirus virulence? The horse and poultry industries are two large, primarily rural based livestock production industries that are major contributors to the national economy. The research proposed in this project will improve our understanding of the pathogenesis of two important viral pathogens that are each a significant cost to their respective industry, and thus will ultimately reduce the cost of these two viruses to industry. In addition, the technology developed during this project would have a global market and may be transferable to other viral pathogens of other domestic species.Read moreRead less
Alphaherpesvirus recombination: safety implications for attenuated Herpesvirus vaccines. Under certain conditions some herpesviruses, including mild vaccine strains, can recombine to generate virulent viruses. Following findings that this occurred naturally between Australian poultry vaccines, with devastating results, this project will study natural herpesvirus recombination with the aim of allowing vaccines to be used more safely.
Imperfect vaccination drives herpesvirus evolution through recombination. Vaccines are used to help control disease caused by herpesviruses in animals, but some vaccination programs may drive the evolution and spread of herpesviruses with increased fitness (transmissibility, replication and virulence) through recombination. This project aims to study an important avian herpesvirus (infectious laryngotracheitis virus) in the natural host (poultry) to gain fundamental knowledge of how vaccination ....Imperfect vaccination drives herpesvirus evolution through recombination. Vaccines are used to help control disease caused by herpesviruses in animals, but some vaccination programs may drive the evolution and spread of herpesviruses with increased fitness (transmissibility, replication and virulence) through recombination. This project aims to study an important avian herpesvirus (infectious laryngotracheitis virus) in the natural host (poultry) to gain fundamental knowledge of how vaccination programs influence the emergence of diverse recombinant viruses, and identify which types of vaccination programs are best at preventing the emergence of fitter and more virulent viruses. The results are expected to inform vaccination practices to allow more effective control of these viruses in poultry and other animals.Read moreRead less