Development of Novel Pesticidal Agents. We have discovered a family of naturally occurring plant proteins called the cyclotides that have potent insecticidal activity against Helicoverpa species, one of the major pests on cotton and corn in Australia and world wide. Preliminary evidence has shown that they also have activity against major pests to livestock in Australia, including sheep blowflies. To develop these proteins as potential pesticidal agents it is necessary to understand the struct ....Development of Novel Pesticidal Agents. We have discovered a family of naturally occurring plant proteins called the cyclotides that have potent insecticidal activity against Helicoverpa species, one of the major pests on cotton and corn in Australia and world wide. Preliminary evidence has shown that they also have activity against major pests to livestock in Australia, including sheep blowflies. To develop these proteins as potential pesticidal agents it is necessary to understand the structural basis for their activity. We will do this by chemically synthesising peptides with selected residues mutated to determine their effects on activity.Read moreRead less
Orally active spider toxins: a novel paradigm for control of insect pests. Many insects and other arthropods are serious pests of Australian crops, livestock, and pets. Australian farmers spend about $300 million per annum on insecticides and acaricides, while Australian consumers spend more than $100 million annually on insecticides for use around the home and garden, and on pets. Viruses disseminated by arthropods are also responsible for diseases such as dengue, Japanese encephalitis, and Ros ....Orally active spider toxins: a novel paradigm for control of insect pests. Many insects and other arthropods are serious pests of Australian crops, livestock, and pets. Australian farmers spend about $300 million per annum on insecticides and acaricides, while Australian consumers spend more than $100 million annually on insecticides for use around the home and garden, and on pets. Viruses disseminated by arthropods are also responsible for diseases such as dengue, Japanese encephalitis, and Ross River fever. Unfortunately, many of these arthropod pests have developed resistance to chemical insecticides. This aim of this research program is to develop a new generation of environmentally-friendly natural products that can be used to control arthropod pests on pets, farms, and around the home and garden.Read moreRead less
Liver fluke: improving disease control through understanding of parasite diversity, drug resistance and better diagnosis. The benefits from this research include: (i) development of knowledge that will allow a better use of existing drug formulations to protect livestock from fasciolosis, potentially generating economic benefits to Australian producers of up to $50-80m/year; (ii) improved application of new commercial therapies for fasciolosis in ruminants, improving producer prosperity; (iii) ....Liver fluke: improving disease control through understanding of parasite diversity, drug resistance and better diagnosis. The benefits from this research include: (i) development of knowledge that will allow a better use of existing drug formulations to protect livestock from fasciolosis, potentially generating economic benefits to Australian producers of up to $50-80m/year; (ii) improved application of new commercial therapies for fasciolosis in ruminants, improving producer prosperity; (iii) enhanced training opportunities for graduate students that will build human capacity in technologies such as molecular diagnostics which have a wide application across the animal sectors; (iv) enhancement of our capacity to respond to unexpected future threats in production animals.Read moreRead less
Novel vaccines and serotyping scheme for Haemophilus parasuis. Glasser's disease, caused by the bacterium Haemophilus parasuis, is a significant problem in Australian and overseas pig industries. Current approaches to the management of Glassers disease utilise antibacterials and also vaccines. However, antibacterials are of limited effectiveness in juvenile pigs (weaners) that are difficult to medicate other than by injection, and current vaccines are only protective against the serotypes incl ....Novel vaccines and serotyping scheme for Haemophilus parasuis. Glasser's disease, caused by the bacterium Haemophilus parasuis, is a significant problem in Australian and overseas pig industries. Current approaches to the management of Glassers disease utilise antibacterials and also vaccines. However, antibacterials are of limited effectiveness in juvenile pigs (weaners) that are difficult to medicate other than by injection, and current vaccines are only protective against the serotypes included in the vaccine. We propose to examine the immune response to natural infection and identify potential vaccine candidates which will then be tested in vaccine trials. The APAI will focus on developing a DNA-based typing scheme for H. parasuis.Read moreRead less
Development of a proto-type vaccine against gastrointestinal nematode larvae. Gastrointestinal parasites are the major cause of production losses in the Australian sheep and wool industries. Drug treatment is predominantly used to control infections but drug resistance has reached critical levels and is threatening the viability of sheep production in many rural areas. In collaboration with an international Animal Health company, we aim to develop vaccines against these parasites and provide a c ....Development of a proto-type vaccine against gastrointestinal nematode larvae. Gastrointestinal parasites are the major cause of production losses in the Australian sheep and wool industries. Drug treatment is predominantly used to control infections but drug resistance has reached critical levels and is threatening the viability of sheep production in many rural areas. In collaboration with an international Animal Health company, we aim to develop vaccines against these parasites and provide a clean, non-toxic alternative to drug treatment. The groundbreaking research involved in this project will also keep Australian animal scientists at the forefront of vaccine research and increase their capacity to attract further support from Industry.Read moreRead less
Using transgenic plant-based production and delivery systems to develop an avian influenza vaccine. This project aims to provide proof-of-concept for the rapid production of plant-made vaccines of high strategic value to the poultry industry. Plant-made AI vaccines would help safeguard primary industries in Australia from exotic influenza strains and shield rural communities from the impact of stock losses. This collaboration will also contribute to the Molecular Farming industry by ensuring tha ....Using transgenic plant-based production and delivery systems to develop an avian influenza vaccine. This project aims to provide proof-of-concept for the rapid production of plant-made vaccines of high strategic value to the poultry industry. Plant-made AI vaccines would help safeguard primary industries in Australia from exotic influenza strains and shield rural communities from the impact of stock losses. This collaboration will also contribute to the Molecular Farming industry by ensuring that Australian interests are considered as this frontier technology tackles the challenges of turning academic research into marketable products. The key features of an oral plant-made AI vaccine, including rapid and non-egg based production, also make this an attractive technology for the future development of swine and human influenza vaccines.Read moreRead less
Topical and cryoanaesthesia for livestock husbandry. The livestock industries contribute $15billion annually to Australia's economy, playing a vital role in rural communities. However we must respond to changing demands of our customers, by complementing our competitive disease-free advantage with welfare-conscious production systems. This project will address the threat of growing international demands for improved animal welfare in farming. We will provide research and technical solutions, pro ....Topical and cryoanaesthesia for livestock husbandry. The livestock industries contribute $15billion annually to Australia's economy, playing a vital role in rural communities. However we must respond to changing demands of our customers, by complementing our competitive disease-free advantage with welfare-conscious production systems. This project will address the threat of growing international demands for improved animal welfare in farming. We will provide research and technical solutions, providing pain mangement products for on-farm use that will reduce animal suffering during routine husbandry interventions. The project offers significant benefits for producers by protecting their industries against the threats of a welfare embargo on our livestock products. Read moreRead less
Mammalian chitinases and gene therapy: new weapons to combat fungal and insect attack in mammals. Plants combat fungal and insect attack by producing chitin degrading enzymes. Related, chitinolytic enzymes have been identified in mammals, but their functions are unclear. We found that chitinases from human macrophages inhibited fungal growth. We hypothesise that, like plants, mammalian chitinases are produced to fight chitin containing pathogens. We will transform cells with a chitotriosidase ge ....Mammalian chitinases and gene therapy: new weapons to combat fungal and insect attack in mammals. Plants combat fungal and insect attack by producing chitin degrading enzymes. Related, chitinolytic enzymes have been identified in mammals, but their functions are unclear. We found that chitinases from human macrophages inhibited fungal growth. We hypothesise that, like plants, mammalian chitinases are produced to fight chitin containing pathogens. We will transform cells with a chitotriosidase gene and encapsulate them, creating bioreactors secreting chitinases. Therapeutic effects will be tested by grafting bioreactors to mice inoculated with Aspergillus. The research is a new approach to fighting chitin containing pathogens, with potential applications from parasite infestations in livestock to fungal infections in humans.Read moreRead less
Flea Control by Immunological Intervention. Fleas are bloodsucking parasites that are the major cause of skin disease in pets. Currently, all available flea products rely upon chemical control and many have active components that have real or perceived health problems. Given that insect growth regulators do not kill adult fleas and pet owners are interested in using alternatives to insecticides, there is a clear need for a complementary form of flea control. We describe the novel use of Prote ....Flea Control by Immunological Intervention. Fleas are bloodsucking parasites that are the major cause of skin disease in pets. Currently, all available flea products rely upon chemical control and many have active components that have real or perceived health problems. Given that insect growth regulators do not kill adult fleas and pet owners are interested in using alternatives to insecticides, there is a clear need for a complementary form of flea control. We describe the novel use of Proteomic technology to identify flea proteins that are "switched on" during feeding and are specifically located in the gut. This project will enable the development of a vaccine that is systemic, kills adult fleas, is long-lasting and residue-free.Read moreRead less
The routes of infection with sheep scrapie and agents that cause related prion diseases. We will define the routes by which the infective agents for scrapie, a debilitating disease of sheep, reach the nervous system after being consumed with food. Scrapie is from the same disease group (prion diseases) as mad cow disease. There would be a large economic cost were prion diseases to infect agricultural animals in Australia, through bioterrorism or accident. An outbreak in sheep could ruin the indu ....The routes of infection with sheep scrapie and agents that cause related prion diseases. We will define the routes by which the infective agents for scrapie, a debilitating disease of sheep, reach the nervous system after being consumed with food. Scrapie is from the same disease group (prion diseases) as mad cow disease. There would be a large economic cost were prion diseases to infect agricultural animals in Australia, through bioterrorism or accident. An outbreak in sheep could ruin the industry, as our export markets would be immediately blocked, and thousands of animals would be killed to stop disease spread. The benefit of clearly understanding how the infective agents reach the nervous system is that this may lead to strategies to intervene, and thus limit the spread and seriousness of infection.Read moreRead less