Elucidating The Activation Mechanism Of The HIV-1 Envelope Glycoproteins, Gp120-gp41
Funder
National Health and Medical Research Council
Funding Amount
$636,973.00
Summary
Antiretrovirals prolong the life of HIV+ people, however toxicity and resistance issues persist. We aim to understand how the HIV surface proteins effect viral entry in order to identify new antiviral targets.
Influenza remains an important disease and exacts a high toll in both morbidity and mortality each year. This project will identify the carbohydrates that are utilised by influenza virus to initiate infection throughout the body and map how these carbohydrates interact with the key viral surface proteins. This research will provide new insight into the emergence of new influenza virus strains and cross-species pathogenicity.
Viral gastroenteritis poses an enormous burden in public health and is an emerging problem due to the acute nature of the infection process. We aim to understand how our bodies react to infection with Noroviruses, in particular how our immune system is triggered and unfortunately avoided during an infectious episode. We also aim to determine how Noroviruses utilized host components and pathways to facilitate infection in the body.
What happens when viruses infect cells? How do they control the cells they infect? How do the make the cells do the things the virus wants? These are the questions that we aim to address within this research proposal. Primarily we hope to identify how viruses are able to replicate in cells and avoid immune detection. We believe these processes are related.
CHARACTERISATION OF NOVEL PICORNAVIRUS-LIKE VIRUSES IDENTIFIED FROM PATIENTS WITH ACUTE RESPIRATORY INFECTIONS.
Funder
National Health and Medical Research Council
Funding Amount
$366,998.00
Summary
The common cold and serious chest colds are usually due to viral infections, and mostly occur in children. Unfortunately we can only be certain of the virus causing this illness in as little as 15% of cases. We intend to address this lack of research by examining, in detail, a new virus we recently identified in a child with serious respiratory illness that required admission to hospital. Testing by our laboratory suggests that the new virus is related to picornaviruses (which cause some common ....The common cold and serious chest colds are usually due to viral infections, and mostly occur in children. Unfortunately we can only be certain of the virus causing this illness in as little as 15% of cases. We intend to address this lack of research by examining, in detail, a new virus we recently identified in a child with serious respiratory illness that required admission to hospital. Testing by our laboratory suggests that the new virus is related to picornaviruses (which cause some common colds) but seems to be present in children with far more serious illness. Our study plans to more completely identify the new picornavirus-like virus (PLV) using the tools of molecular biology and the expertise of a senior team of Australian scientists and clinicians who have recently made several virus discoveries in Australia, demonstrating that Australian virus research is capable of achieving highly competitive results that benefit our hospitals and especially their young patients. Our studies will develop extremely sensitive tests which rely on the detection of very small amounts of the viral genome. We can use these tests to determine what the whole virus looks like, when it might occur during the year and whether the PLV are found worldwide. Our studies will also produce viral proteins in the laboratory and use these to make new tests for stored blood samples. If a blood sample comes from a patient who has previously been infected by PLV, their blood will contain specific antibodies which we will then be able to detect. We also intend to determine whether some strains of PLV are more or less likely to cause serious illness than others. Improved understanding of these and other viruses minimises the chance of illness spreading within a hospital, helps scientists to decide against which viruses to design vaccines and drugs and aids medical doctors to better identify what once went undiagnosed.Read moreRead less
Improving The Management Of An Emerging Viral Disease In Australia: Determination Of The Mechanisms Of Neuroinvasion By Hendra Virus And Their Control, Leading To Optimisation Of Post-exposure Therapy Following Contact With Hendra Virus
Funder
National Health and Medical Research Council
Funding Amount
$675,742.00
Summary
Hendra virus causes severe disease in people with >50% mortality; human infection is acquired following contact with affected horses. In nature, Hendra virus is carried by flying foxes and the cause of spill-over events to horses is unknown. The impact of Hendra virus on human health may rapidly increase in response to continued urban expansion; the outcome of this project will be improved decision support for those charged with the medical management of people exposed to this deadly virus.
The diversity of HIV quasispecies within a single AIDS patient is far greater than the global diversity of influeneza annually, highlighting the enormous burden HIV imposes on the immune network. The capacity of HIV-1 to evolve quickly has significantly impaired our effort to produce effective vaccine and long lasting treatment strategy. This project utilizes multidisciplinary approaches to delineate determinants that drives the diversification of HIV-1.
Defining The Contribution Of Skin Gamma Delta T Cells To Cutaneous Immunosurveillance, Immunity And Disease After HSV Infection.
Funder
National Health and Medical Research Council
Funding Amount
$601,386.00
Summary
Herpes simplex virus (HSV) causes genital herpes and encephalitis. Disease is severe in the immunocompromised and the newborn. HSV enters through breaks in the skin or mucosa, where it first encounters gamma delta T cells. We have recently made the key finding that HSV can infect gamma delta T-cells shortly after inoculation. Here we will study how they contribute to the immune response when a virus enters the skin in mice and human tissues. This may lead development of new topical antiviral vac ....Herpes simplex virus (HSV) causes genital herpes and encephalitis. Disease is severe in the immunocompromised and the newborn. HSV enters through breaks in the skin or mucosa, where it first encounters gamma delta T cells. We have recently made the key finding that HSV can infect gamma delta T-cells shortly after inoculation. Here we will study how they contribute to the immune response when a virus enters the skin in mice and human tissues. This may lead development of new topical antiviral vaccines.Read moreRead less
Herpesviruses infect most Australians and cause recurrent ulcers, birth defects and cancer. Infection lasts lifelong, and spreads to close contacts without obvious clinical signs. Thus disease is hard to prevent. However we can learn much from related animal infections. We have shown that both mouse and human herpesviruses enter mice via cells in the nose. Thus human infections might follow the same route. We will define what body defences work here and whether vaccines can prevent infection.
Human ?-herpesviruses persist for life, cause cancers and emerge with particular virulence when the immune system is weak. Vaccination against them is therefore an important health priority. We have shown for a related ?-herpesvirus of mice that live vaccines protect. Antibody seems to play a major role. We will test whether safer, recombinant vaccines are also sufficient to elicit protective antibody. Thus we can establish a viable strategy for preventing virus-induced human cancers.