Utilising Human Primary Immunodeficiencies To Study Lymphocyte Differentiation
Funder
National Health and Medical Research Council
Funding Amount
$429,346.00
Summary
Human immunodeficiencies are diseases arising from naturally occurring mutations. In this instance, the specific genes mutated in the immunodeficiencies we study have been identified. However, it is unclear how defects in these genes make an individual manifest as an immune deficient state, rendering them vulnerable to disease. By studying immune cells from these individuals we hope to uncover the normal function of these genes and subsequently provide for new therapies for these conditions.
This fellowship is to support Professor Stephen Kent in generating new advances in vaccines to prevent HIV (the cause of AIDS) and Influenza (“The Flu”). HIV causes over 1.5 million deaths per year and no vaccine is currently available. Influenza causes around half a million deaths per year. Although the current Influenza vaccine is partially effective, improvements are needed for it to be able to protect against the many different strains of Influenza that can cause infection.
This study will examine cellular immunity to the avian H5 influenza in people who have been previously infected with the currently circulating strains of H1 and H3 influenza, or in those who have been recently vaccinated with current influenza vaccines. This will give us an idea if there is any cross reactive immunity that may assist in developing immunity to pandemic strains of avian influenza, or may provide help in making antibody responses sooner to avian influenza vaccines once they are dev ....This study will examine cellular immunity to the avian H5 influenza in people who have been previously infected with the currently circulating strains of H1 and H3 influenza, or in those who have been recently vaccinated with current influenza vaccines. This will give us an idea if there is any cross reactive immunity that may assist in developing immunity to pandemic strains of avian influenza, or may provide help in making antibody responses sooner to avian influenza vaccines once they are developed. We will also establish assays to determine how immunogenic some new avian influenza vaccines are in mice.Read moreRead less
A T-cell Based Approach To Identifying Islet Antigens In Human Type 1 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$404,400.00
Summary
Autoimmune diseases arise when the immune system, which protects us from infections and cancer, attacks healthy tissues. Nobody knows why the immune system mistakes healthy for unhealthy tissue. The immune system's T cells are prime suspects because they play a central role in controlling the immune response. Hence, the aim of this work is to understand what human T cells see in healthy tissues that may lead them to cause autoimmune diseases like type 1 diabetes.
Phenotypic And Functional Characterization Of Human Dendritic Cell Subsets Generated In Vitro And Isolated From Tissues
Funder
National Health and Medical Research Council
Funding Amount
$586,428.00
Summary
The immune system defends us against infections and cancer. Dendritic cells (DC) are white blood cells that have a central role to both activate the immune system and to regulate immune responses. In this study, we will determine the functional differences of human DC populations, because a clear understanding of the functional differences between different human DC types is essential for utilizing DC in designing more effective vaccines and immune therapies for clinical applications.
Targeting Vitamin-reactive T Cells For Enhanced Immunity
Funder
National Health and Medical Research Council
Funding Amount
$2,590,576.00
Summary
A specialised set of T cells called mucosal-associated invariant T (MAIT) cells react against bacteria and yeast, and reside at mucosal sites where the body's immune defences are often breached, e.g. respiratory tract and intestinal mucosa. This study seeks to define the molecular signals driving the function of MAIT cells, particularly during infections. This information may lead to methods tailored to manipulating MAIT cells therapeutically.
Immune Correlates Of Protection Against HCV - A Potential Role For NK Cells And NKR Expression On T Lymphocytes
Funder
National Health and Medical Research Council
Funding Amount
$72,754.00
Summary
Hepatitis C virus (HCV) poses a major public health problem with ~200 million people infected worldwide and no available vaccine. Injecting drug users (IDUs) are the major risk group, with 75% of infected individuals progress to chronic infection, which can then lead to liver cirrhosis and hepatocellular carcinoma. However, about 20% of a given cohort of IDUs remains uninfected. This project is therefore focused on understanding the innate immune mechanisms behind this protection.
The Role Of 14-3-3 Proteins In Regulating The Innate Immune Response
Funder
National Health and Medical Research Council
Funding Amount
$517,989.00
Summary
The immune response is the body's defense system. It's malfunction leads to many diseases such as immune deficiency, asthma and cancer. Thus, it is important to find genes controlling immunity. Significantly, mammals have amazing similarities with flies, in terms of genes controlling immunity. We have found a new regulator of fly immunity and will define how this gene functions in the immune system. This project will identify potential points of intervention for treating immune system disorders.
Host Resistance And Protection Against Oral Candidasis
Funder
National Health and Medical Research Council
Funding Amount
$196,527.00
Summary
Candida albicans is an important opportunistic pathogen, that is widely represented in general medical and dental practice, as well as in the hospital environment. Clinical observations indicate that defects in innate immunity predispose patients to disseminated infection, whereas a weakened cell-mediated immune response is commonly associated with chronic oral infections. Animal models of both chronic and acute oral candidiasis have been developed and characterised by the applicants, and these ....Candida albicans is an important opportunistic pathogen, that is widely represented in general medical and dental practice, as well as in the hospital environment. Clinical observations indicate that defects in innate immunity predispose patients to disseminated infection, whereas a weakened cell-mediated immune response is commonly associated with chronic oral infections. Animal models of both chronic and acute oral candidiasis have been developed and characterised by the applicants, and these have clearly implicated T cells in the process of recovery from primary infection. The models will now be used to analyse the effector mechanisms that lead to clearance of the yeast from the oral cavity, with a particular focus on the role of phagocytic cells, and their interaction with T cells. The acute model will be used to identify immunological variables that can act as markers of protection, and the effectiveness of therapeutic manipulations will be evaluated in the chronic model, with the ultimate aim of developing a protective vaccine for human infections.Read moreRead less