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Structural And Functional Properties Of Platelet Endothelial Cell Adhesion Molecule-1 (PECAM-1) Isoforms
Funder
National Health and Medical Research Council
Funding Amount
$188,623.00
Summary
Platelet Endothelial Cell Adhesion Molecule-1 (PECAM-1-CD31) is a member of the Ig-superfamily that is implicated in a variety of biological responses such as leukocyte transmigration, angiogenesis, cellular signaling, cell adhesion and migration. Recent studies from this laboratory has demonstrated that PECAM-1 contains intracytoplasmic immunoreceptor tyrosine-based inhibition motifs (ITIM) that upon phosphorylation can mediate an inhibitory function through recruitment and activation of protei ....Platelet Endothelial Cell Adhesion Molecule-1 (PECAM-1-CD31) is a member of the Ig-superfamily that is implicated in a variety of biological responses such as leukocyte transmigration, angiogenesis, cellular signaling, cell adhesion and migration. Recent studies from this laboratory has demonstrated that PECAM-1 contains intracytoplasmic immunoreceptor tyrosine-based inhibition motifs (ITIM) that upon phosphorylation can mediate an inhibitory function through recruitment and activation of protein tyrosine phosphatases, SHP-1 and SHP-2. We would therefore consider PECAM-1 as a new member of an emerging Ig-ITIM superfamily. Members of the Ig-ITIM gene family have both inhibitory-non-inhibitory receptors which upon ligation of specific receptors can globally stimulate or inhibit cellular activation in the context of B cells, Tcells, mast cells , endothelial cells or platelets. Balancing the threshold of cellular activation is critical in the immune response to tumours, pathogens or allergens, to arrest autoimmune and infectious disease, to provoke immunological memory from vaccination and to dampen the extent and duration of platelet activation. Our investigations are focussing on the isolation and functional characterisation of PECAM-1 family members to define their role in regulating cell signaling pathways in vascular and haematopoietic cells. We predict that PECAM-1 has numerous undefined family members that exist as multiple isoforms as a product of separate genes, alternative splicing of discrete exons and single point mutations giving rise to conservative and non-conversative amino acid changes. The longer term potential of this study is to provide knowledge for understanding the structural and functional roles of PECAM-1 isoforms in physiological cells in health and disease. This knowledge could then be applied to provide targets for novel therapeutic interventions in the clinical management of autoimmune disease, humoral and inflammatory responses.Read moreRead less
Using Metagenomics To Determine The Causative Agent(s) Of Tick-Borne Disease In Australia
Funder
National Health and Medical Research Council
Funding Amount
$639,428.00
Summary
Tick-borne disease has emerged as a topical and controversial public health problem in Australia. We will employ state-of-the-art techniques in metagenomics to determine what microbial species (bacteria, viruses and eukaryotes) circulate in Australian ticks and whether these or different microbes are also present in humans diagnosed with tick-borne disease. The data generated will provide key information on whether tick-borne disease has a microbiological cause and, if so, the microbes involved.
Economic, social and cross cultural issues in non-pharmaceutical protection of front line responders to pandemic influenza and emerging infections. The protection of front line responders in a pandemic is essential to underpin an effective response. This research is the only work internationally which will address a key gap in evidence. This research has major implications for the national stockpile and for management of front line responders in a pandemic. These data are urgently needed, not ju ....Economic, social and cross cultural issues in non-pharmaceutical protection of front line responders to pandemic influenza and emerging infections. The protection of front line responders in a pandemic is essential to underpin an effective response. This research is the only work internationally which will address a key gap in evidence. This research has major implications for the national stockpile and for management of front line responders in a pandemic. These data are urgently needed, not just in Australia, but globally to inform pandemic planning and disease control policy around emerging infections and bioterrorism.Read moreRead less
Detection and viability of waterborne pathogens using a gut-on-chip. This project aims to resolve a significant problem for water utilities. Microbial pathogens Cryptosporidium, norovirus and adenovirus are the main public health concern for drinking water in developed nations. Water monitoring is limited by the lack of fast, reliable detection methods and viability assays for these pathogens. This project will use a novel gut-on-a-chip to develop for the first time rapid infectivity assays for ....Detection and viability of waterborne pathogens using a gut-on-chip. This project aims to resolve a significant problem for water utilities. Microbial pathogens Cryptosporidium, norovirus and adenovirus are the main public health concern for drinking water in developed nations. Water monitoring is limited by the lack of fast, reliable detection methods and viability assays for these pathogens. This project will use a novel gut-on-a-chip to develop for the first time rapid infectivity assays for Cryptosporidium, norovirus and adenovirus. Significant benefits include improved diagnostics and water disinfection assays, improved water treatment and reduced costs with global impact.Read moreRead less
Maintaining fidelity in viral Ribonucleic acid (RNA) polymerases. This project will provide informed insights into the dynamics of viruses that currently impact a healthy start to life, ageing well and productively, and preventative healthcare. The analysis of viruses that cause gastroenteritis outbreaks will increase our understanding of how these viruses replicate and spread.
The Development Of A Cross-strain And Cross-subtype Pre Pandemic Influenza Vaccine Using Savine Technology
Funder
National Health and Medical Research Council
Funding Amount
$159,500.00
Summary
The flu vaccines in use today work by inducing antibodies to surface proteins. Flu causes disease every year but occasionally a new strain arises that is distincly differnet from previous strains and can cause wides spread disease and deaths worldwide. Our new approach is to increase the level of T cells that can recognise and kill flu infected cells from all flu strains.
Development and commercialization of novel diagnostic assays for the early detection of acute dengue virus infection. Dengue is an emerging disease of the tropics and is endemic in more than 100 countries with up to 100 million cases annually. Of these, 500,000 result in dengue haemorrhagic fever (DHF), a serious life-threatening complication of dengue virus infection. Dengue activity in northern Australia has increased in recent years with suggestions that it may be coming endemic in this count ....Development and commercialization of novel diagnostic assays for the early detection of acute dengue virus infection. Dengue is an emerging disease of the tropics and is endemic in more than 100 countries with up to 100 million cases annually. Of these, 500,000 result in dengue haemorrhagic fever (DHF), a serious life-threatening complication of dengue virus infection. Dengue activity in northern Australia has increased in recent years with suggestions that it may be coming endemic in this country. Early diagnosis, using NS1 based assays should facilitate containment of such outbreaks through earlier identification, treatment, isolation and strategic mosquito control.Read moreRead less
Transport and innate immune properties of DNA in bacterial nano-sized vesicles. All types of living organisms release nano-sized membrane vesicles or “blebs” which they use for intercellular communication and transport of molecules. This project will determine how bacteria package DNA within these vesicles, how this DNA is transported into host cells and how it triggers immune responses in these cells.