Innate Immune Functions Of The Intracellular Antibody Receptor TRIM21
Funder
National Health and Medical Research Council
Funding Amount
$408,768.00
Summary
The immune system can fight viral infections with antibodies, which mark viruses outside of cells for elimination by immune cells. Antibody-coated viruses try to escape elimination by hiding inside cells. This project will determine how immune cells recognise the antibody-coated viruses ‘hiding’ within them, and the defence response they launch to eliminate viral infection. Such knowledge may allow us to develop better anti-viral drugs and vaccines to fight viral diseases like the common cold.
The Role Of Perivascular Macrophages In The Regulation Of Skin Inflammation
Funder
National Health and Medical Research Council
Funding Amount
$616,518.00
Summary
Neutrophils are key defenders against bacterial infections. In this application we will test the hypothesis that perivascular macrophages play a critical role in the recruitment of neutrophils to site of cutaneous infection, and that these cells are targeted and destroyed by bacterial virulence factors. Our studies will gain novel insight into the leukocyte homing paradigm and shed new light on the mechanisms of microbial immuno-evasion.
An Investigation Into The Molecular Basis Of MAIT Cell Recognition Of Vitamin B Based Metabolites
Funder
National Health and Medical Research Council
Funding Amount
$883,762.00
Summary
Mucosal associated invariant T cells (MAIT cells) are an abundant T-cell population in humans, that is found mostly in the gastrointestinal mucosa. We have recently shown that MAIT cells can be activated by metabolites of vitamin B. This proposal will investigate how the MAIT cells "see" vitamin B metabolites. This research will pave the way for novel therapeutics that can modulate MAIT cell activity.
The Role Of A Novel Cytokine Of The Innate Immune Response In Viral Infection
Funder
National Health and Medical Research Council
Funding Amount
$344,407.00
Summary
Sexually transmitted infections represent a critical global health and socioeconomic problem with over 1 billion new cases per annum. I propose a world-first description of a new protein that has a protective role against herpes simplex virus (HSV) infection of female reproductive tract. This unique protein, called interferon epsilon, was discovered in our laboratory. This project will facilitate development of new therapeutic approaches of benefit in HSV-2 infection.
To Describe The Regional Differences In The Innate Immune System Of The Skin Using Intra-vital Multiphoton Microscopy And Understand Its Functional Consequences In A Cutaneous Parasite Infection Model.
Funder
National Health and Medical Research Council
Funding Amount
$97,182.00
Summary
This study is the first of its kind to map the innate immune system, the body's first line of defence, in the skin - coined the "immune atlas". Researchers have shown regional differences in innate immune cells which could explain how infections develop at different sites of the body. Although they have shown this in a cutaneous leishmaniasis model, a parasite endemic in most parts of the world, it may have implications also for inflammatory skin conditions such as eczema or psoriasis.
PB1-F2 Is Critical To Influenza A Virus Pathogenicity Through Activation Of The Inflammasome
Funder
National Health and Medical Research Council
Funding Amount
$663,919.00
Summary
Fatal Influenza A virus infections are excessive inflammation. We identified the IAV protein PB1-F2 as critical in driving excessive inflammation via activating the host inflammasome complex. Our study evaluates PB1-F2-mediated inflammation contribution to inflammatory responses. Identifying PB1-F2 in emerging IAV strains is invaluable in aiding health policy makers to quickly assess fatal IAV pandemics. Our research will potentially identify treatment targets towards reducing this inflammation
Identification Of Novel Strategies To Mediate Immunity Against Intracellular Pathogens
Funder
National Health and Medical Research Council
Funding Amount
$325,084.00
Summary
The immune system consists of two arms - innate and adaptive. Current vaccine strategies rely mainly on adaptive features of the immune system to mediate immunity against pathogens. Many pathogens have evolved sophisticated strategies to manipulate the adaptive immune system to render it ineffective. This project will investigate microbial detection by the innate immune system, and aims to discover novel, more effective strategies to mediate immunity against intracellular pathogens.
The Role Of Stellate Cells In Fibrosis And Liver Disease Progression In HIV-Hepatitis B Co-infection
Funder
National Health and Medical Research Council
Funding Amount
$157,292.00
Summary
Liver related mortality is the commonest cause of non-AIDS death in HIV infected individuals on treatment. With HIV, HBV liver damage is accelerated and liver-related mortality increased. Understanding how and why is critical to management. I will examine the role of hepatic stellate cells using in vitro models and directly ex vivo from infected patient biopsy tissue. I will investigate the activated of these cells by HIV and HBV infection, thus promoting scar formation with liver injury.
Defining The Interaction Of HIV With The Interferon System In Initial Mucosal Infection
Funder
National Health and Medical Research Council
Funding Amount
$867,716.00
Summary
Very early after virus exposure, immune cells secrete interferons that help limit the spread of viruses within the body. We will investigate the complex interplay between HIV and the interferon system, especially how HIV inhibits the early induction of interferon to aid its spread and then how the body later restores the interferon response. We will also examine how HIV manipulates the interferon system in order to persistent latent reservoirs within tissues.
Characterization Of Human-specific Anti-microbial Pathways
Funder
National Health and Medical Research Council
Funding Amount
$586,428.00
Summary
The immune system protects us against infectious disease by killing invading microbes or pathogens. Macrophages are white blood cells that are important for the recognition and destruction of pathogens. This project aims to investigate the role of certain genes, which are turned on in macrophages when they sense invading pathogens, in protecting us against infectious diseases such as tuberculosis and gastroenteritis.