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Autophagy And Growth Signalling In Developmentally Programmed Cell Death
Funder
National Health and Medical Research Council
Funding Amount
$594,133.00
Summary
Cell death is essential for normal development and deregulated cell death results in many diseases. We have recently discovered a potentially novel mechanism of developmental cell death that involves autophagy (a type of self-degradation). Our studies will now examine the mechanism of autophagic cell death and study how cell growth regulation is integrated in this pathway. This will provide us important knowledge into the complex role of autophagy in cancer.
Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and, in ....Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and, in general, to maintain the correct number of cells in the body. As such, misregulation of apoptosis is associated with the pathogenesis of a wide array of diseases. To understand, manage and treat disorders that result from aberrant apoptosis, we need to know at molecular and cellular level, how apoptosis is brought about and how it is regulated. We have been studying these processes in detail for several years. Central to the apoptotic execution of cell death are a group of proteases called caspases, that target many cellular proteins for specific cleavage. The activation of caspases is the crucial step in the initiation of apoptosis and therefore each cell has developed complex ways to control this process. If we understand how these regulatory mechanisms operate, we can then formulate strategies that are targeted towards pathologies involving abnormal apoptosis. In this proposal we will use vinegar fly as a model to study the function of caspases in development. We believe that results from this proposal will have several major benefits. Firstly, they will provide important insight into the mechanisms of developmental apoptosis thereby filling many gaps in our current knowledge. Secondly, the study will endeavour to identify new molecules-pathways that lead to caspase activation. Finally, the proposed studies will shed light on the function of caspases in non-apoptotic pathways.Read moreRead less
Control Of Organ Size During Development And Disease By The Salvadore-Warts-Hippo Pathway
Funder
National Health and Medical Research Council
Funding Amount
$331,674.00
Summary
Cancer is a disease that results from the generation of too many cells. Many signalling pathways control cell number including the newly identified Salvador-Warts-Hippo pathway. We are studying the mechanisms by which activity of this pathway is controlled, using the vinegar fly as a model. Information obtained from our study will aid understanding of human cancer as cellular processes which go awry in cancer, such as cell proliferation and death, are highly conserved between flies and humans.
Apoptosis And Autophagy In Developmentally Programmed Cell Death
Funder
National Health and Medical Research Council
Funding Amount
$502,437.00
Summary
Cell death is essential for sculpting tissues and organs in developing foetus and deregulated cell death results in many diseases. To treat disorders that result from aberrant cell death, we need to understand the control of cell death during development. We will use a vinegar fly model to study cell death modalities in development. By doing this we hope to uncover new knowledge important for human biology and identify new molecules that may be important for understanding and treating disease.
Temporal And Spatial Regulation Of Caspases In Development And Metamorphosis
Funder
National Health and Medical Research Council
Funding Amount
$473,250.00
Summary
Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in g ....Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in general to maintain the correct number of cells in the body. As such, misregulated apoptosis is associated with the pathogenesis of a wide array of diseases such as autoimmune diseases, many forms of cancer and neurodegenerative disorders (such as Alzheimer's and Parkinson's diseases), heart disease, ischaemia and other conditions. To understand, manage and treat disorders that result from aberrant apoptosis, we need to know at molecular and cellular level, how apoptosis is brought about and how it is regulated. We have been studying these processes in detail for several years. Central to the apoptotic execution of cell death are a group of proteases that target many cellular proteins for specific cleavage. The activation of these proteases is the crucial step in the initiation of apoptosis and therefore each cell has developed complex ways to control this process. In the present proposal, we aim to study regulation of caspases that are involved in developmental apoptosis. Furthermore, we plan to identify proteins that are responsible for the regulation of caspase activation.Read moreRead less
Developing Cancer Therapies That Target Chromosomal Instability
Funder
National Health and Medical Research Council
Funding Amount
$644,126.00
Summary
A significant reason why late-stage cancers are hard to treat with drugs is because the tumour cells show genetic variability, always producing new variants that sooner or later get around the drugs. We intend to combat this by targeting the ability of cancer cells to vary genetically - we are discovering ways to specifically kill genetically unstable cells. This prevents the cancer from developing drug resistance as well as having less side effects on the patient's normal cells.
Temporal And Spatial Regulation Of Caspases In Development And Metamorphosis
Funder
National Health and Medical Research Council
Funding Amount
$369,072.00
Summary
Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in g ....Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in general to maintain the correct number of cells in the body. As such, dysregulation of apoptosis is associated with the pathogenesis of a wide array of diseases such as autoimmune diseases, many forms of cancer and neurodegenerative disorders (such as Alzheimer's and Parkinson's diseases), heart disease, ischaemia and other conditions. To understand, manage and treat disorders that result from aberrant apoptosis, we need to know at molecular and cellular level, how apoptosis is brought about and how it is regulated. We have been studying these processes in detail for several years. Central to the apoptotic execution of cell death are a group of proteases that target many cellular proteins for specific cleavage. The activation of these proteases is the crucial step in the initiation of apoptosis and therefore each cell has developed complex ways to control this process. If we understand how these regulatory mechanisms operate, we can then formulate strategies that are targeted towards pathologies involving abnormal apoptosis. Various molecules that are involved in the execution and regulation of apoptosis are potentially excellent targets for therapeutic intervention in a number of disorders and will lead to the development of novel drugs for the treatment and prevention of many pathological conditions. In the present proposal, we aim to study what type of caspases are involved in sculpting of various organs and tissues during development.Read moreRead less
Regulation Of Cell Death And Proliferation By Histone Demethylases
Funder
National Health and Medical Research Council
Funding Amount
$521,105.00
Summary
Turning genes 'on' and 'off' is essential for normal functioning of cells in the body. Modifications to chromatin (DNA-protein complexes that make up the chromosomes) by some enzymes regulate this switch. This project will identify enzymes that modulate chromatin to control gene expression during cell death and proliferation to maintain cell homeostasis. The study of these enzymes will be important in better understanding of cancer development and in discovering new targets for cancer therapy.
Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in g ....Cell death by a special process called apoptosis is a means of deleting unwanted and harmful cells from the body. Extensive apoptosis occurs during foetal development which is required to get rid of many excess cells produced during the growth of the embryo. Selective apoptosis is also essential for the formation of different tissues and organs in developing foetus. In the adult, apoptosis is required for proper functioning of the immune system, to remove virus infected and cancer cells and in general to maintain the correct number of cells in the body. As such, misregulation of apoptosis is associated with the pathogenesis of a wide array of diseases such as autoimmune diseases, many forms of cancer and neurodegenerative disorders (such as Alzheimer's and Parkinson's diseases), heart disease, ischaemia and other conditions. To understand, manage and treat disorders that result from aberrant apoptosis, we need to know at molecular and cellular level, how apoptosis is brought about and how it is regulated. We have been studying these processes in detail for several years. Central to the apoptotic execution of cell death are a group of proteases that target many cellular proteins for specific cleavage. The activation of these proteases is the crucial step in the initiation of apoptosis and therefore each cell has developed complex ways to control this process. If we understand how these regulatory mechanisms operate, we can then formulate strategies that are targeted towards pathologies involving abnormal apoptosis. Various molecules that are involved in the execution and regulation of apoptosis are potentially excellent targets for therapeutic intervention in a number of disorders and will lead to the development of novel drugs for the treatment and prevention of many pathological conditions.Read moreRead less
I am a developmental cell biologist and molecular geneticist focusing on mechanisms controlling cell proliferation and modelling the development of cancer in the vinegar fly, Drosophila.