Taming the intruders: the domestication of Tigger transposable elements in mammals. It has become apparent that most of the DNA that makes us what we are is actually comprised of the remnants of invading parasitic DNA acquired over time. A continual battle exists between host which tries to silence or remove this DNA, and the parasite that tries to multiply and spread. We are currently investigating an intriguing aspect of this process that involves host genomes 'domesticating' parasitic DNA to ....Taming the intruders: the domestication of Tigger transposable elements in mammals. It has become apparent that most of the DNA that makes us what we are is actually comprised of the remnants of invading parasitic DNA acquired over time. A continual battle exists between host which tries to silence or remove this DNA, and the parasite that tries to multiply and spread. We are currently investigating an intriguing aspect of this process that involves host genomes 'domesticating' parasitic DNA to provide novel functions, thereby facilitating the evolution of specific characteristics within species.Read moreRead less
Discovering mechanisms of primary embryonic tissue migration through live cell imaging and novel genetic approaches. The studies proposed here will provide concepts and knowledge about the molecular basis of cell migration that will impact on diverse aspects of human health, such as the causes and nature of tumour metastasis and our understanding of the developmental basis of birth defects. In addition, understanding cell migration mechanisms will allow us to better predict or control the behav ....Discovering mechanisms of primary embryonic tissue migration through live cell imaging and novel genetic approaches. The studies proposed here will provide concepts and knowledge about the molecular basis of cell migration that will impact on diverse aspects of human health, such as the causes and nature of tumour metastasis and our understanding of the developmental basis of birth defects. In addition, understanding cell migration mechanisms will allow us to better predict or control the behaviour of therapeutic stem cells introduced into the body.Read moreRead less
Epigenetic reprogramming of development by nutritional factors in honeybee. The project aims to study the mechanism by which a specialised nutrition can change or even reverse the process of adult cell fate. The project will use a previously unexplored method of nutritional reprogramming of imaginal discs in honeybees by royal jelly and identify novel components of both the genetic and epigenetic systems that are most potent as reprogramming factors. The project seeks to improve our understandin ....Epigenetic reprogramming of development by nutritional factors in honeybee. The project aims to study the mechanism by which a specialised nutrition can change or even reverse the process of adult cell fate. The project will use a previously unexplored method of nutritional reprogramming of imaginal discs in honeybees by royal jelly and identify novel components of both the genetic and epigenetic systems that are most potent as reprogramming factors. The project seeks to improve our understanding of how epigenetic remodelling of the information content of the genome contributes to conversion of cell fate in vivo and in vitro. More broadly, the project could potentially establish the honeybee imaginal discs as a model for understanding pluripotency and environmentally controlled developmental plasticity.Read moreRead less
ARC Centre of Excellence in Biotechnology and Development. The Centre will create a multidisciplinary research team focusing on the molecular mechanisms that drive the specification and differentiation of male germ cells. This research will improve our fundamental understanding of how complex regulatory networks control the expression of a complex phenotype, the spermatozoon. It will also create a platform of knowledge from which we can stimulate the growth of the Australian Biotechnology indust ....ARC Centre of Excellence in Biotechnology and Development. The Centre will create a multidisciplinary research team focusing on the molecular mechanisms that drive the specification and differentiation of male germ cells. This research will improve our fundamental understanding of how complex regulatory networks control the expression of a complex phenotype, the spermatozoon. It will also create a platform of knowledge from which we can stimulate the growth of the Australian Biotechnology industry, the protection of the Australian Environment and the well-being of the Australian people. Key issues for this Centre include testicular cancer, male infertility, contraception, pest animal control, environmental impacts on human health and gene pharming.Read moreRead less
Genetic control of tissue growth in animals. This project aims to understand how the animal body grows. This project expects to generate new knowledge and understanding of the genetic programs that govern the size and shape of animal tissues, through use of cutting-edge genome editing approaches in laboratory animals. Expected outcomes of this project include the production of genetically engineered animals with altered tissue growth, development of new theories for how tissue growth is normal ....Genetic control of tissue growth in animals. This project aims to understand how the animal body grows. This project expects to generate new knowledge and understanding of the genetic programs that govern the size and shape of animal tissues, through use of cutting-edge genome editing approaches in laboratory animals. Expected outcomes of this project include the production of genetically engineered animals with altered tissue growth, development of new theories for how tissue growth is normally controlled and how it can be manipulated industrially. This should provide significant benefits, impacting stem cell biology (improving stem cell production), tissue engineering (improving growth of artificial tissues), veterinary science and agriculture (improving productivity).Read moreRead less
Solving the Mysteries of Monotreme Chromosomes. The peculiar chromosomes of Australia's platypus and echidna have been debated for more than 30 years. Classical cytology cannot resolve the puzzling sex chromosome system, or to sort out the bizarre translocation chain (unique in vertebrates) and deduce how it segregates to make viable zyotes. I will microdissect individual chromosomes, and use DNA ?paints? from them (and gene probes isolated by them) to detect homologies between unpaired chromoso ....Solving the Mysteries of Monotreme Chromosomes. The peculiar chromosomes of Australia's platypus and echidna have been debated for more than 30 years. Classical cytology cannot resolve the puzzling sex chromosome system, or to sort out the bizarre translocation chain (unique in vertebrates) and deduce how it segregates to make viable zyotes. I will microdissect individual chromosomes, and use DNA ?paints? from them (and gene probes isolated by them) to detect homologies between unpaired chromosomes at mitosis, meiosis and in sperm. I will use immunohistochemistry to clarify chromosome pairing and recombination at meiosis. This will answer some important general questions about chromosome behaviour and sex chromosome evolution.
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Discovering genes and mechanisms regulating immune responses. The Fellowship will retain and expand a pioneering Australian research program, and attract to Australia major international investment and technology linkages, making use of the DNA sequence of humans and other mammals to advance understanding of immunity and infection control in public health, agriculture and industry. The program will build on Australia's pre-eminent research strengths in the field of immunity and infection, and w ....Discovering genes and mechanisms regulating immune responses. The Fellowship will retain and expand a pioneering Australian research program, and attract to Australia major international investment and technology linkages, making use of the DNA sequence of humans and other mammals to advance understanding of immunity and infection control in public health, agriculture and industry. The program will build on Australia's pre-eminent research strengths in the field of immunity and infection, and will create new knowledge and resources to improve human and animal health through vaccines, pharmaceuticals and public health policy. Read moreRead less
Adaptive Evolution of BRCA1 in Ancestral Mammals. This project investigates adaptive evolution of BRCA1 in the early radiation of mammals. We will test the hypothesis that the evolution of mammary glands and X chromosome inactivation has resulted in modification of the BRCA1 protein sequence as it aquired new roles in these processes. We will also investigate the importance of these changes inducing compensatory changes in other parts of the protein.
Evolution in microsatellite DNA: testing models of mutation in an Australian marsupial. We aim to compare mutational events between microsatellite loci that vary in their exposure to recombination. We are able to do this because of a remarkable finding that Australian brushtail possums have multiple occurrences of a single microsatellite repeat element within the Y-chromosome and among autosomal loci. We will compare variation between the Y-linked and non Y-linked loci within and among individu ....Evolution in microsatellite DNA: testing models of mutation in an Australian marsupial. We aim to compare mutational events between microsatellite loci that vary in their exposure to recombination. We are able to do this because of a remarkable finding that Australian brushtail possums have multiple occurrences of a single microsatellite repeat element within the Y-chromosome and among autosomal loci. We will compare variation between the Y-linked and non Y-linked loci within and among individual possums and use those comparisons to distinguish between recombinant and non- recombinant mutational mechanisms. These data will provide new insights into the mutational mechanisms that drive variation in these most important molecular markers.Read moreRead less
Sex in Dragons: Evolution of sex determination in reptiles. Australia is a leader in sex determination research with major advances in our understanding attributable to Australian researchers and laboratories. This project will contribute to our prestige as a nation capable of contributing cutting edge research directions and stimulating ideas in human sex determination. Moreover, many reptiles have temperature-dependent sex determination, and so would appear appallingly vulnerable to climate ch ....Sex in Dragons: Evolution of sex determination in reptiles. Australia is a leader in sex determination research with major advances in our understanding attributable to Australian researchers and laboratories. This project will contribute to our prestige as a nation capable of contributing cutting edge research directions and stimulating ideas in human sex determination. Moreover, many reptiles have temperature-dependent sex determination, and so would appear appallingly vulnerable to climate change. Our project, will bring improved understanding of sex determination in reptiles, identify evolutionary responses of reptiles to climate change, and assist by informing society on how we might manage this issue into the future conservation of these unique Australian reptiles. Read moreRead less