From shape to function: how structured RNA defines insect flaviviruses. The goal of this project is to obtain an understanding of how insect-specific flaviviruses (ISFs) utilise viral noncoding RNAs to enable their replication in mosquitoes. These viruses only replicate in mosquitoes, and not in humans or animals. They can be employed as the biocontrol agents for mosquito-borne diseases as they make mosquitoes incapable of disease transmission. However, it is currently unknown how exactly insect ....From shape to function: how structured RNA defines insect flaviviruses. The goal of this project is to obtain an understanding of how insect-specific flaviviruses (ISFs) utilise viral noncoding RNAs to enable their replication in mosquitoes. These viruses only replicate in mosquitoes, and not in humans or animals. They can be employed as the biocontrol agents for mosquito-borne diseases as they make mosquitoes incapable of disease transmission. However, it is currently unknown how exactly insect-specific flaviviruses affect mosquitoes and this information is vital for informed design of ISF-based interventions. The project will generate new knowledge on functions of noncoding RNAs in ISFs that are hypothesised to have immunomodulatory role in mosquitoes. It will also train students and ECRs.Read moreRead less
Seeking causes of unexplained respiratory illness in children by identifying new respiratory viruses. Many respiratory illnesses including the common cold, ear infections, asthma attacks, the flu and pneumonia have no known cause even after all specimen testing is complete. This project will use 'virus hunting' experience to find and sequence as-yet-undiscovered viruses from such specimens so that they can be studied in more detail.
Noncanonical epitope recognition by CD8+ T lymphocytes. This proposed research program will provide significant fundamental insight in the areas of immunology and vaccine design. Vaccines for many diseases remain elusive, and this project aims to improve our understanding of the precise regions within pathogens that are the targets for the killer T cells of the immune system. These regions, called epitopes, are likely to be key ingredients in many future vaccines. Although immunologists have gat ....Noncanonical epitope recognition by CD8+ T lymphocytes. This proposed research program will provide significant fundamental insight in the areas of immunology and vaccine design. Vaccines for many diseases remain elusive, and this project aims to improve our understanding of the precise regions within pathogens that are the targets for the killer T cells of the immune system. These regions, called epitopes, are likely to be key ingredients in many future vaccines. Although immunologists have gathered much information about such epitopes, recent studies have shown that some unexpected regions of pathogens are targets for killer T cells. This project will break new ground by utilising unbiased procedures to assess the relative contribution of these noncanonical epitopes to immunity.Read moreRead less
Understanding the mechanism of Wolbachia-mediated antiviral protection. Insects are involved in the transmission of many viral diseases of both plants and animals. A considerable number of these diseases have adverse effects for public health or cause large economic losses in agriculture. We were the first to discover that a common bacteria protects insects from virus infection. Knowledge of the mechanisms used by the bacteria to interfere with virus accumulation will facilitate novel strategies ....Understanding the mechanism of Wolbachia-mediated antiviral protection. Insects are involved in the transmission of many viral diseases of both plants and animals. A considerable number of these diseases have adverse effects for public health or cause large economic losses in agriculture. We were the first to discover that a common bacteria protects insects from virus infection. Knowledge of the mechanisms used by the bacteria to interfere with virus accumulation will facilitate novel strategies for control of virus disease. The findings of this project will enable Australian researchers and industry to design innovative approaches to control diseases that are transmitted by insects.Read moreRead less
The biology of arbovirus virulence and fitness in arthropod and vertebrate hosts in vivo. In Australia, Ross River virus (RRV) represents significant concern to human health. Between 1992-2005 more than 50,000 notifications of RRV infection have been reported. While not fatal, the disease is responsible for morbidity in the community/individual that can have both social and economic costs. The project has several national benefits. It will help elucidate whether there is any association between ....The biology of arbovirus virulence and fitness in arthropod and vertebrate hosts in vivo. In Australia, Ross River virus (RRV) represents significant concern to human health. Between 1992-2005 more than 50,000 notifications of RRV infection have been reported. While not fatal, the disease is responsible for morbidity in the community/individual that can have both social and economic costs. The project has several national benefits. It will help elucidate whether there is any association between RRV strain and increased risk of RRV transmission and/or occurrence of more severe cases of human disease. It will help develop technologies that can lead towards the identification of viral markers, which could provide new avenues in the design of novel antiviral strategies.
Read moreRead less
Viral and host RNA methylation in mosquitoes. Mosquitoes transmit a variety of viruses to humans and animals through blood feeding. This project aims to investigate one of the most common modifications of RNA molecules, known as N6-methyladenosine (m6A), in an important mosquito vector, Aedes aegypti, and its alterations upon infection with pathogenic as well as mosquito-specific viruses. In addition, m6A modification of viral genomic RNA and its importance in virus replication will be investiga ....Viral and host RNA methylation in mosquitoes. Mosquitoes transmit a variety of viruses to humans and animals through blood feeding. This project aims to investigate one of the most common modifications of RNA molecules, known as N6-methyladenosine (m6A), in an important mosquito vector, Aedes aegypti, and its alterations upon infection with pathogenic as well as mosquito-specific viruses. In addition, m6A modification of viral genomic RNA and its importance in virus replication will be investigated. Expected outcomes of this project include fundamental understanding of RNA methylation in mosquitoes and their role in mosquito biology and virus replication.Read moreRead less
Retroviral invasion of the koala genome: Where did it come from and what is it doing now that its there? Although some populations of free-ranging koalas are flourishing, many are in decline as a result of habitat loss and disease. We have shown that a recently identified virus that has infected koalas throughout most mainland Australian populations is associated with high rates of cancer in these animals. This project will study the growth properties of this virus and the mechanism by which it ....Retroviral invasion of the koala genome: Where did it come from and what is it doing now that its there? Although some populations of free-ranging koalas are flourishing, many are in decline as a result of habitat loss and disease. We have shown that a recently identified virus that has infected koalas throughout most mainland Australian populations is associated with high rates of cancer in these animals. This project will study the growth properties of this virus and the mechanism by which it causes cancer in order to provide a foundation for developing intervention strategies for protection of this iconic Australian species.Read moreRead less
What is killing the honeybees? The role of RNA viruses. This project aims to determine if the Varroa mite, the most important parasite of honeybees, selects for virulent strains of RNA viruses. Before Varroa’s inevitable arrival in Australia, this project will disentangle the effect of Varroa and the bees’ immune system on the evolution of virulence of bee viruses. Australia’s honeybees are Varroa-naïve and don’t carry virulent viruses. There is a known association between Varroa and colonies dy ....What is killing the honeybees? The role of RNA viruses. This project aims to determine if the Varroa mite, the most important parasite of honeybees, selects for virulent strains of RNA viruses. Before Varroa’s inevitable arrival in Australia, this project will disentangle the effect of Varroa and the bees’ immune system on the evolution of virulence of bee viruses. Australia’s honeybees are Varroa-naïve and don’t carry virulent viruses. There is a known association between Varroa and colonies dying from viruses; however, it is not known what is cause and effect. This project will clarify Varroa’s exact role in the evolution of virulence in RNA viruses. The intended outcome is increased knowledge allowing the design of an effective treatment to prevent the death of honeybee colonies.Read moreRead less
Cross-kingdom communications via small non-coding RNAs. This project aims to determine the role of small non-coding RNAs in mosquito-Wolbachia interactions, including Wolbachia microRNAs, concentrating on exchanged microRNAs between the two organisms and explore microRNAs effect on Wolbachia maintenance and its anti-viral property. Small non-coding RNAs play significant roles in various biological processes, including host-microorganism interactions. Recent evidence suggests that small RNAs can ....Cross-kingdom communications via small non-coding RNAs. This project aims to determine the role of small non-coding RNAs in mosquito-Wolbachia interactions, including Wolbachia microRNAs, concentrating on exchanged microRNAs between the two organisms and explore microRNAs effect on Wolbachia maintenance and its anti-viral property. Small non-coding RNAs play significant roles in various biological processes, including host-microorganism interactions. Recent evidence suggests that small RNAs can be exchanged between microorganisms and their hosts and regulate gene expression in the other organism. The endosymbiotic bacterium, Wolbachia, has attracted worldwide attention due to inhibiting replication of various vector-borne pathogens in mosquito vectors.Read moreRead less
Regulatory cellular microRNAs and their role in insect anti-viral responses. This project will use cutting edge approaches to reveal fundamental roles of small ribonucleic acid molecules (microRNAs) in insect anti-viral responses and immunity. By manipulating anti-viral immune responses, the project will assist in the design of novel approaches to pest control and abolish/limit transmission of vector-borne viruses such as Dengue virus.