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.
Avoiding the immune response: lessons from 'simple' bacteria. Some of the most important bacterial diseases of domestic animals are caused by mycoplasmas. Improved control of these diseases would significantly improve agricultural productivity by reducing losses associated with reduced feed conversion efficiency and increased susceptibility to other diseases, as well as improve animal welfare and public health, by reducing the need for antibiotic therapy to control these diseases in food produci ....Avoiding the immune response: lessons from 'simple' bacteria. Some of the most important bacterial diseases of domestic animals are caused by mycoplasmas. Improved control of these diseases would significantly improve agricultural productivity by reducing losses associated with reduced feed conversion efficiency and increased susceptibility to other diseases, as well as improve animal welfare and public health, by reducing the need for antibiotic therapy to control these diseases in food producing animals.Read moreRead less
Investigation of the immunological properties of a novel adjuvant in sheep. The induction of strong immune responses without side effects is a highly desirable goal in vaccine R&D. The recently developed adjuvant DCtag utilises unique properties of dendritic cells to boost both cellular and humoral immune responses without tissue damage. This project will identify the mechanisms of immune induction of DCtag using unique properties of our sheep cannulation model. This will allow further optimisat ....Investigation of the immunological properties of a novel adjuvant in sheep. The induction of strong immune responses without side effects is a highly desirable goal in vaccine R&D. The recently developed adjuvant DCtag utilises unique properties of dendritic cells to boost both cellular and humoral immune responses without tissue damage. This project will identify the mechanisms of immune induction of DCtag using unique properties of our sheep cannulation model. This will allow further optimisation of DCtag adjuvanticity in sheep, which will then be applied to the delivery of a prototype peptide based vaccine against foot and mouth disease virus, a veterinary disease of global importance, hereby increasing Australia's leadership in biotechnology.Read moreRead less
Application of DNA vaccination to the control of gastrointestinal nematodes in livestock. Gastrointestinal nematode parasites inflict great losses in sheep and cattle and reliance on anthelmintic drugs for their control is problematic. Vaccination would provide a better alternative but has been difficult to achieve. This proposal aims to apply novel DNA vaccination strategies to the development of parasite vaccines through optimisation of DNA delivery, development of new vaccination vectors and ....Application of DNA vaccination to the control of gastrointestinal nematodes in livestock. Gastrointestinal nematode parasites inflict great losses in sheep and cattle and reliance on anthelmintic drugs for their control is problematic. Vaccination would provide a better alternative but has been difficult to achieve. This proposal aims to apply novel DNA vaccination strategies to the development of parasite vaccines through optimisation of DNA delivery, development of new vaccination vectors and modulation of immune responses by co-delivery of cytokine genes. The results of these studies will not only add a new approach to vaccine development against gastrointestinal parasites but will also contribute to our knowledge of DNA vaccination in large animals.Read moreRead less
Application of in vivo electroporation to DNA immunisation. The in vivo delivery of plasmid DNA induces immune responses to the encoded protein vaccine. In large animals including humans, DNA vaccination needs to be further improved before becoming a commercial reality, at least partially due to the very low levels of expression in vivo. In vivo electroporation has proven to be an effective way to enhance the level of protein expression and increase DNA vaccine efficacy. We combine enhanced in ....Application of in vivo electroporation to DNA immunisation. The in vivo delivery of plasmid DNA induces immune responses to the encoded protein vaccine. In large animals including humans, DNA vaccination needs to be further improved before becoming a commercial reality, at least partially due to the very low levels of expression in vivo. In vivo electroporation has proven to be an effective way to enhance the level of protein expression and increase DNA vaccine efficacy. We combine enhanced in vivo expression using electroporation with the co-delivery of plasmids encoding cytokines to enhance and modulate DNA vaccine in sheep. We will apply our findings to bovine viral diarrhoea virus (BVDV), both as an animal model for humans and as an economically important diseases of livestock.Read moreRead less