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Defining The Requirement For The Inhibition Of Bak To The Pathogenesis Of Cytomegalovirus Infection
Funder
National Health and Medical Research Council
Funding Amount
$592,661.00
Summary
Apoptosis, or programmed cell death is a powerful defence mechanism against viral infection. Thus, to replicate efficiently viruses have evolved means to inhibit apoptosis. The central aim of this work is to understand how cytomegalovirus prevents cell death protein during infection. The proposed studies will improve our understanding of the mechanisms that regulate viral replication and will contribute insights into the normal processes that control cell survival.
The balance between cellular survival and death must be tightly regulated. Cells respond to viral infection by self-destructing, thus limiting viral spread to other cells. Viruses have evolved ways to subvert this defensive cell suicide. This project will define and characterise viral factors that maintain host cell survival during infection. These may be targets for the development of new anti-viral therapies and vaccines.
MicroRNA Pathway Control Of Immune Cell Development
Funder
National Health and Medical Research Council
Funding Amount
$631,370.00
Summary
The immune system is comprised of many different cell types, each with a specialised function. Many are short-lived and must be continually replenished throughout life. Abnormalities in this process underlie many human diseases, including immunodeficiency, autoimmunity and cancer. My laboratory seeks to understand the molecular pathways that control development of immune cells and to identify the defects that lead to disease.
The Role Of Apoptotic Caspases In Regulating Type I Interferon Production
Funder
National Health and Medical Research Council
Funding Amount
$791,746.00
Summary
Type I interferons (IFNs) are potent anti-viral cytokines. Dysregulated type I IFN responses result in major pathologies, e.g., embryonic lethality and defects in tissue homeostasis. We have identified a novel molecular mechanism regulating IFN production that relies on the host’s own apoptotic caspases. We hypothesize that apoptotic caspases critically regulate IFN responses during the process of cell death, with implications for tissue homeostasis and host responses to infection.
Alternative Splicing- A Regulatory Mechanism Determining Self-renewal And Pluripotency Of ES And IPS Cells
Funder
National Health and Medical Research Council
Funding Amount
$664,650.00
Summary
Stem cells hold great promise in cell replacement therapies and may provide models to study human diseases and to screen new pharmaceuticals. For successful future therapeutic applications, a deeper understanding of the molecular mechanisms governing the behavior of stem cells is crucial. In this proposal we will investigate the role of alternative splicing in the control of the fundamental properties of stem cells, and identify target RNAs and gene expression networks regulated by splicing fact ....Stem cells hold great promise in cell replacement therapies and may provide models to study human diseases and to screen new pharmaceuticals. For successful future therapeutic applications, a deeper understanding of the molecular mechanisms governing the behavior of stem cells is crucial. In this proposal we will investigate the role of alternative splicing in the control of the fundamental properties of stem cells, and identify target RNAs and gene expression networks regulated by splicing factors.Read moreRead less
The Mechanism Of Cell Death In Response To Cytoplasmic DNA, And Its Role In Tumour Suppression
Funder
National Health and Medical Research Council
Funding Amount
$517,897.00
Summary
DNA in mammalian cells is in a structure known as the nucleus. Retroviruses such as HIV generate DNA outside the nucleus in the cytoplasm, and detection of DNA in the cytoplasm can lead to cell death, as a defence. All cells carry the remnants of ancient retroviruses in their nuclear DNA. These are normally inactive but may contribute to cancer when activated. This project investigates how normal cells die with cytoplasmic DNA, and whether a defect in this process promotes development of cancer.