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Morbidity and mortality secondary to liver disease is greatly increased in people co-infected with HIV and HBV compared to those infected with HBV alone. Mortality remains elevated even after treating both viruses. This project will investigate the mechanism of how HIV accelerates liver disease in patients co-infected with HBV. We hypothesize that this occurs by combined effects of HIV and HBV on inflammation in the liver. These studies could potentially lead to new treatments for liver disease.
Novel Early Detection Strategy For Liver Cancer Using Hepatitis B Splice Variants To Expediate Diagnosis And Improve Treatment Outcome
Funder
National Health and Medical Research Council
Funding Amount
$943,566.00
Summary
Hepatitis B virus (HBV) causes liver cancer, which is one of the only cancers that is increasing in prevalence. We have shown that smaller versions of HBV, termed splice variants, are even more strongly associated with liver cancer- people with higher levels of the splice variants were over 3 times more likely to have liver cancer. We will find out why, by thoroughly studying how the splice variants alter the virus and the host cell to promote liver cancer.
A vaccine for hepatitis C virus (HCV) is not yet available. Immune responses that are able to protect against infection are possible, making the production of a vaccine a realistic goal. We have produced a unique HCV vaccine and are now poised to test our vaccine in novel humanised animal models. Our research will allow us to determine the immune responses responsible for providing protection against HCV. Our data will be highly significant for future HCV vaccine studies in humans.
Imaging The Hepatitis C Virus Life Cycle In Real-time
Funder
National Health and Medical Research Council
Funding Amount
$477,504.00
Summary
Hepatitis C virus (HCV) is a serious viral pathogen that causes significant liver disease. This proposal plans to examine how two proteins from the HCV, core and NS5A, interact with host proteins and pathways to facilitate viral replication and release of HCV; two processes that are poorly understood. Specifically we will tag viral proteins to allow us to investigate the HCV life cycle in living cells and determine the role of core and NS5A in facilitating HCV replication. This proposal may unco ....Hepatitis C virus (HCV) is a serious viral pathogen that causes significant liver disease. This proposal plans to examine how two proteins from the HCV, core and NS5A, interact with host proteins and pathways to facilitate viral replication and release of HCV; two processes that are poorly understood. Specifically we will tag viral proteins to allow us to investigate the HCV life cycle in living cells and determine the role of core and NS5A in facilitating HCV replication. This proposal may uncover novel therapeutic strategies to combat HCV.Read moreRead less
Investigating The Host Determinants Of Viral Clearance Versus Collateral Pathology In Chronic Infection
Funder
National Health and Medical Research Council
Funding Amount
$1,250,756.00
Summary
Hepatitis B virus has infected over 2 billion people. Some people control the virus but it remains incurable and there is a lifelong risk of liver cancer. Understanding how host cells interact with the virus, the mechanisms the cells use in an attempt to eliminate the virus and the mechanisms the virus uses to sabotage these responses, will provide insights that could lead to therapies. Potential therapies could be applicable to other infections like HIV-1 and tuberculosis.
Worldwide >360 million people have chronic hepatitis B virus (HBV) infection that imparts a 25% lifetime risk of death due to serious liver disease. Current therapies for chronic HBV reduce levels of virus replication but fail to target the stable, nuclear episome, covalently closed circular DNA (cccDNA). The current study will determine what is required to eliminate cccDNA and how current therapies for chronic HBV infection should be modified to achieve this aim.