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Molecular Mechanisms Of Varicella Zoster Virus Interactions With Key Target Cells
Funder
National Health and Medical Research Council
Funding Amount
$421,650.00
Summary
Varicella zoster virus (VZV) is a herpesvirus which infects up to 90% of the population. VZV causes chickenpox (varicella) predominantly in childhood and shingles (herpes zoster) in middle to old age people. Whilst VZV usually causes relatively mild disease in healthy individuals, VZV still causes significant morbidity in children and adults. VZV causes life-threatening disease in immunocompromised individuals such as patients who are elderly or have HIV disease . Herpes zoster affects many eder ....Varicella zoster virus (VZV) is a herpesvirus which infects up to 90% of the population. VZV causes chickenpox (varicella) predominantly in childhood and shingles (herpes zoster) in middle to old age people. Whilst VZV usually causes relatively mild disease in healthy individuals, VZV still causes significant morbidity in children and adults. VZV causes life-threatening disease in immunocompromised individuals such as patients who are elderly or have HIV disease . Herpes zoster affects many ederly individuals and a major complication is prolonged severe pain or post-herpetic neuralgia (PHN), both severely debilitating and which often requires follow-up medical care for months or years after the initial attack. Despite its significant impact on the community, little is known about the molecular details of how this virus functions. This project aims to improve our understanding of how VZV infection affects specialised human cells in order to make further advances in antiviral therapies as well improve vaccine design for the treatment or prevention of VZV disease and the crippling complication of PHN. This project has four components: (1) We will continue studies which have shown that VZV may actively avoid detection by the immune system. We aim to identify the mechanism and viral genes responsible for interfering with the expression of molecules which are essential for our immune system. (2) We will determine whether VZV infection of specialised immune cells (called dendritic cells) will affect their ability to function and interact with other immune cells (called T cells). (3) We will examine how VZV interacts in human nerve cells (neurons) and whether infected neurons undergo specially programmed cell death (apoptosis). (4) We will examine how different human cells change when they are infected with VZV. A new and exciting technology called DNA microarray now makes it possible to examine the expression of many thousands of genes in one experiment.Read moreRead less
The Biology Of Events Following Reactivation Of Herpes Simplex Virus.
Funder
National Health and Medical Research Council
Funding Amount
$388,522.00
Summary
Herpes simplex virus causes genital herpes, severe disease in neonates, cold sores and occasionally fatal encephalitis. It lies doemant within nerve cells near the spine and reactivates intermittently, travelling down nerves to cause the characteristic ulcers in the skin, including the genitals. This grant has two major components. In the first we aim to continue studies which are defining the way in which Herpes simplex viruses assemble within nerve cells. These processes have always been the s ....Herpes simplex virus causes genital herpes, severe disease in neonates, cold sores and occasionally fatal encephalitis. It lies doemant within nerve cells near the spine and reactivates intermittently, travelling down nerves to cause the characteristic ulcers in the skin, including the genitals. This grant has two major components. In the first we aim to continue studies which are defining the way in which Herpes simplex viruses assemble within nerve cells. These processes have always been the subject of much debate and have never been properly studied in the nerve cells in which the virus lives. Furthermore the way in which herpes simplex virus enters the processes of nerve cells and moves to the cell body will be studied by similar techniques. Such studies may contribute to the development of herpes simplex virus as a vector for gene therapy for treatment of diseases of the nervous system. The second part of the grant will examine the immune processes that occur in the skin during the early stages of a recurrent herpes simplex lesion. In particular there is a linkage between nerves and the major cells in the skin which present viral antigen to defensive T-cells. This link may provide a route for direct access of herpes simplex virus to these cells. In previous work the viral protein targets in infected skin cells for killer T-cells which infiltrate the skin have been defined. In this grant we also aim to find the stretches of amino acids which are specifically targetted by these cells.Read moreRead less
Resolving Human Immunodeficiency Virus (HIV) Transmission
Funder
National Health and Medical Research Council
Funding Amount
$745,213.00
Summary
To increase the breadth of HIV prevention strategies, it is imperative that we biologically understand how HIV enters our bodies. Through two unique clinical cohorts, we will determine why circumcision is protective and how a commonly acquired sexual transmitted infection (human papilloma virus) can increase HIV transmission.
Arbovirus Activation And Modulation Of NLRP3 Inflammasome
Funder
National Health and Medical Research Council
Funding Amount
$779,720.00
Summary
This project aims to establish how mosquito borne viruses such as Ross River and dengue viruses interacts with the human host to cause disease, including how the virus evades the host’s immune response to persist and cause disease for prolonged periods. Knowing how differences in the virus and the host’s immune system interplay to cause asymptomatic to severely disabling disease will assist in devising new treatments and prevention programs to lessen the impact of these diseases in Australia.
New Insights Into Viral Inflammatory Disease Mechanisms And Approaches To Therapy
Funder
National Health and Medical Research Council
Funding Amount
$631,010.00
Summary
This fellowship aims to establish how viruses cause disease, including how they evade the immune response to persist and cause disease for prolonged periods. My vision is that knowing how the virus and the immune system interact to determine disease severity will assist in devising new treatments and prevention programs to lessen the impact of viral diseases in Australia and worldwide.
Exploring The Role Of Respiratory Virus Infections In Childhood Asthma Exacerbations
Funder
National Health and Medical Research Council
Funding Amount
$596,649.00
Summary
The PEAK study will explore the reasons children get worse asthma symptoms when they get colds. These reasons examined include the asthma medications taken (or not taken), allergies and exposure to allergens and the type of virus involved. The study follows the children over the whole school term and uses a new way to sample virus by collecting it in the breath, this is more comfortable than old methods and can be done at home.
Mathematical Modelling For Improved Planning Of Infectious Diseases Control Policy
Funder
National Health and Medical Research Council
Funding Amount
$2,750,000.00
Summary
We will develop high-level technical capacity in mathematical modeling of infectious disease transmission and control in Australia, with a focus on research that informs health policy. The aim is to assist Australia to have efficient and effective control strategies and help to prepare us against the threat of emerging infections. Priority areas are vaccination programs, HIV-AIDS, emerging infections and bio-terrorism. Six talented young researchers will be trained by the lead applicant team. To ....We will develop high-level technical capacity in mathematical modeling of infectious disease transmission and control in Australia, with a focus on research that informs health policy. The aim is to assist Australia to have efficient and effective control strategies and help to prepare us against the threat of emerging infections. Priority areas are vaccination programs, HIV-AIDS, emerging infections and bio-terrorism. Six talented young researchers will be trained by the lead applicant team. Together, we will develop a prominent and experienced research team capable of sustaining international quality research into the future. Their work will meet immediate, existing policy needs at state, national and global levels. The program includes the establishment of a Network of Infectious Diseases Modellers of Australia (NIDMA) as a research resource of national expertise, peer support and a means of ongoing communication and collaboration in infectious diseases control. The critical mass of modeling expertise that we create will be sustainable long-term, and will expand to support research concerned with chronic and other non-infectious diseases after the lifetime of the grant.Read moreRead less
Mosquito-borne alphaviruses such as Ross River and chikungunya viruses cause widespread epidemics and exert extreme pressure on the public health systems of affected regions. Alphaviruses spreads to joints and triggers a severe disease in those affected. There are no effective treatments or vaccines. The project will investigate virus-host interaction at the bite site. The outcome will be new knowledge to treat infection at the mosquito bite site to prevent joint disease.
Novel Insights Into The Pathobiology Of Alphavirus Infections
Funder
National Health and Medical Research Council
Funding Amount
$827,660.00
Summary
Infections with mosquito-borne viruses are increasing at an alarming rate worldwide. Ross River virus is endemic in parts of Australia, PNG and Pacific islands, while chikungunya virus is distributed globally and causes recurrent pandemics that involve millions of people. These viruses cause severe musculoskeletal disease for several months after infection. This project aims to establish how these viruses interact with the human host to cause disease and may provide a basis for new treatments.