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I am a developmental biologist using genetic approaches in the model vertebrate, zebrafish, to study the molecular basis for muscle formation. My laboratory studies the basic biology of muscle and applies that knowledge to create accurate disease models o
A Saturation Screen For Modifiers Of Epigenetic Reprogramming In The Mouse: Phase II
Funder
National Health and Medical Research Council
Funding Amount
$1,374,820.00
Summary
The building of a complex organism, such as a human embryo, is a self-directed process driven by the genetic information inherited from the parents. As the cells differentiate into a diverse array of tissues, the genetic information does not change. What does change is the epigenetic state of the genome in each cell type. We still understand little about this epigenetic reprogramming except that mistakes in the process lead to death and disease. Our work aims to address this lack of knowledge
Identification Of Genes Important In Myeloid And Haemopoietic Development By Genetic Screening In Zebrafish
Funder
National Health and Medical Research Council
Funding Amount
$425,250.00
Summary
Zebrafish have emerged as a powerful experimental model in developmental genetics. Their favourable attributes include their reproductive biology, the optical clarity of embryos, and the accessibility of embryos for experimental procedures. Previous studies overseas have recovered over 1500 strains of zebrafish with inherited diseases due to induced mutations in about 500 genes. Many of these zebrafish have abnormalities of unexpected precision and are leading to new genes with novel specialized ....Zebrafish have emerged as a powerful experimental model in developmental genetics. Their favourable attributes include their reproductive biology, the optical clarity of embryos, and the accessibility of embryos for experimental procedures. Previous studies overseas have recovered over 1500 strains of zebrafish with inherited diseases due to induced mutations in about 500 genes. Many of these zebrafish have abnormalities of unexpected precision and are leading to new genes with novel specialized functions. About 50 mutant zebrafish strains exist in which red blood cell development is perturbed - this was easily recognized because the transparency of embryos enabled lack of blood be easily seen. Our new studies aim primarily to recover mutant zebrafish with disorders of white blood cell formation. We have identified methods to recognize failure of white blood cell formation in zebrafish, and will employ these methods to look for inherited disorders that specifically affect white blood cell development in a process called genetic screening. Fish with different sets of randomly mutated genes will be systematically screened to identify those with abnormal white blood cell development. We have tested our approach and identified several mutants affecting white blood cell development. Once these new strains of fish are identified, we will find the genetic lesion responsible for the abnormality in several of the most interesting strains by gene mapping and positional cloning. Hence, the mutant zebrafish identified in the screen will eventually lead to the discovery of new genes important in white blood cell growth and development. The fish themselves will provide insights into the causes of congenital diseases of white blood cells. Since many genes involved in early development are also important in cancer, we believe that newly identified genes will also help understand the causes of abnormal growth of white blood cells in leukaemia.Read moreRead less
A knockout approach to identifying genes involved in epidermal development and homeostasis. These studies will identify new genes which play a role in the development or maintenance of the skin, some of which may subsequently be shown to play a role in disease. The project capitalises on an investment of tens of millions of dollars by the Wellcome Trust in generating a significant cohort of knockout mice. Our involvement in this international initiative will ensure Australia's participation in ....A knockout approach to identifying genes involved in epidermal development and homeostasis. These studies will identify new genes which play a role in the development or maintenance of the skin, some of which may subsequently be shown to play a role in disease. The project capitalises on an investment of tens of millions of dollars by the Wellcome Trust in generating a significant cohort of knockout mice. Our involvement in this international initiative will ensure Australia's participation in a project at the forefront of mouse genetics, using cutting edge infrastructure and technologies to provide insights into the complement of genes involved in skin biology. Models of interest will be repatriated to Australia for further study capitalising on existing infrastructure provided through the NCRIS funding program. Read moreRead less
Discovery of novel microRNA biogenesis and functional components. Discovery of novel microRNA components will provide new strategies for confronting a diverse array of challenges Australia faces, such as the increasing rates of certain cancers in our population, to stresses on our crop plants faced with environmental changes. The biological mechanisms underlying these disparate problems are unified by microRNA involvement in many instances. By finding microRNA controlling factors common to all h ....Discovery of novel microRNA biogenesis and functional components. Discovery of novel microRNA components will provide new strategies for confronting a diverse array of challenges Australia faces, such as the increasing rates of certain cancers in our population, to stresses on our crop plants faced with environmental changes. The biological mechanisms underlying these disparate problems are unified by microRNA involvement in many instances. By finding microRNA controlling factors common to all higher organisms, we expect our community will benefit from the increased knowledge base that will help our researchers adopt new strategies in fighting diseases and improving our agricultural industry.Read moreRead less
The Production of Respiratory Cell Lineages from Human Embryonic Stem Cells: Towards a Cell Replacement Therapy for the Treatment of Respiratory Specific Deficits. Embryonic stem (ES) cells are a primitive embryonic cell type that can be maintained and grown in vitro. Mouse ES cells can be instructed to develop into a wide range of specific adult cell types. Research into human ES cells has more recently commenced and has already resulted in the controlled production of specific nerve cells by o ....The Production of Respiratory Cell Lineages from Human Embryonic Stem Cells: Towards a Cell Replacement Therapy for the Treatment of Respiratory Specific Deficits. Embryonic stem (ES) cells are a primitive embryonic cell type that can be maintained and grown in vitro. Mouse ES cells can be instructed to develop into a wide range of specific adult cell types. Research into human ES cells has more recently commenced and has already resulted in the controlled production of specific nerve cells by our group. The following project aims to create respiratory lineages from both mouse and human ES cells. Such an undertaking thus aims to provide a basis for the treatment of respiratory specific diseases such as cystic fibrosis and emphysema.Read moreRead less