Identifying The Ontogeny And Fate Of T Follicular Helper Cells By Two-photon Photoconversion
Funder
National Health and Medical Research Council
Funding Amount
$623,070.00
Summary
The aim of this proposal is to investigate immune cells called T follicular helper cells using a novel microscopy-based method that we have developed. This method lets us ‘tag’ these cells in a way that enables us to distinguish them from all other cells and follow them as they migrate to different immunological compartments during the response. T follicular helper cells are important for protective immune responses against pathogens and a better understanding of this T cell subset will aid vacc ....The aim of this proposal is to investigate immune cells called T follicular helper cells using a novel microscopy-based method that we have developed. This method lets us ‘tag’ these cells in a way that enables us to distinguish them from all other cells and follow them as they migrate to different immunological compartments during the response. T follicular helper cells are important for protective immune responses against pathogens and a better understanding of this T cell subset will aid vaccine design.Read moreRead less
NKT cells are a type of lymphocyte with the ability to prevent a broad range of diseases including cancer, autoimmunity, infection and graft rejection. Sometimes, NKT cells also cause diseases, including allergy and atherosclerosis. This project will investigate how NKT cells become activated in these diseases by studying their surface receptors and what these receptors interact with.
Molecular And Cellular Control Of Human Th9 Cell Differentiation In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$550,888.00
Summary
T helper 9 (Th9) cells are a recently defined population of CD4+ T cells that have been implicated in immunological disorders ranging from allergy, asthma, inflammatory bowel disease, and cancer, to host defence against fungal and parasitic infections. As such, Th9 cells are extremely important to human health and disease. This project aims to define the mechanisms involved in the generation, regulation and function of human Th9 cells.
Defining The Role Of Innate T Cells In The Onset And Progression Of Chronic Periodontitis
Funder
National Health and Medical Research Council
Funding Amount
$581,978.00
Summary
Particular immune cell populations (innate T cells), have a critical role in immunity. These cells are stimulated by bacterial cell wall components and are one of the first cells to appear after infection. We have shown that these innate T cells are stimulated by oral bacteria that cause the disease chronic periodontitis. This project will investigate how these innate T cells affect bacterial induced periodontitis and what role they play in disease outcomes.
Interleukin Signalling In CD4+ T Cell Differentiation
Funder
National Health and Medical Research Council
Funding Amount
$663,919.00
Summary
Our bodies rely on the production of antibodies to fight infection. The cytokine IL-21 is produced by immune cells called T follicular helper (Tfh) cells that help B cells make antibodies. Tfh cells, in turn, are controlled by regulatory (Tfr) cells. Our findings demonstrate that IL-21 supports Tfh cells and limits Tfr cells, thus favoring antibody production and long term immunity. Using genomic and cellular approaches, the mechanism(s) underlying these observations will be explored.
The Role Of NF-?B Transcription Factor RelA In Regulatory T Cell Homeostasis And Function
Funder
National Health and Medical Research Council
Funding Amount
$637,114.00
Summary
Treg cells constitute an immune regulatory cell population that is essential for the prevention of fatal autoimmunity; however, they also limit immunity against cancer. We have discovered that the factor RelA is of critical importance for Treg development and function. We now aim to illuminate the functions of RelA in detail. Understanding the molecules that impact on Treg cell biology is critical to harness their potential for clinical intervention such as treatment of autoimmunity and cancer.
CCR9 Expressing T Helper Cells In Immunity And Autoimmunity
Funder
National Health and Medical Research Council
Funding Amount
$729,571.00
Summary
We have identified a unique subset of immune cells in autoimmune lesions named Tccr9 cells. You find these cells in the gut, but when the body shifts into disease mode, Tccr9 cells disseminate to the accessory organs of the digestive system. Understanding the relationship between gut Tccr9 cells and the Tccr9 cells that contribute to chronic inflammation and autoimmunity is the focus of this research proposal.
Follicular Cytotoxic T Cell Differentiation And Function In Infection And B-cell Lymphoma
Funder
National Health and Medical Research Council
Funding Amount
$963,892.00
Summary
Cytotoxic T cells eliminate infected or cancerous cells, constituting a major arm of the immune defence. In this study, we will investigate a subset of cytotoxic T cells that particularly migrate into B cell follicles to control infection and malignancy. Understanding of the differentiation and function of this subset, termed as follicular cytotoxic T (TFC) cells, will help us to develop new strategies to treat EBV and HIV infections as well as B cell lymphomas.
Development, Regulation And Role Of Innate Immunological Memory In Malaria
Funder
National Health and Medical Research Council
Funding Amount
$563,860.00
Summary
Innate immunity is traditionally considered to be a short-lived, non-specific first line of defense against pathogens. However, recent reports suggest that innate immune cells can learn from previous pathogen encounters, resulting in enhanced responses on repeat infections with the same pathogen. We will study the role and regulation of innate immunological memory during malaria infection. This will advance our understanding of malaria immunology and will likely aid in the development of vaccine ....Innate immunity is traditionally considered to be a short-lived, non-specific first line of defense against pathogens. However, recent reports suggest that innate immune cells can learn from previous pathogen encounters, resulting in enhanced responses on repeat infections with the same pathogen. We will study the role and regulation of innate immunological memory during malaria infection. This will advance our understanding of malaria immunology and will likely aid in the development of vaccines.Read moreRead less
Investigating Type I Interferon-mediated Immune-suppression During Plasmodium Infection
Funder
National Health and Medical Research Council
Funding Amount
$561,617.00
Summary
Some infections tend to afflict us only once in our lifetimes, for example chickenpox. This is because our bodies develop immunity to these infections relatively easily. The same is not true for malaria. It is thought that our immune systems are somehow suppressed during this disease. This project aims to understand how the immune system is suppressed during malaria infection, in order that we can block this process, and help our bodies fight this disease more effectively.