Proteomic and Transcriptional Profiling of Cartilage. Gene expression and signalling pathways that regulate cartilage formation, and its orderly transition to bone, are poorly described. Our studies will, for the first time, combine two complementary cutting-edge approaches, protein identification by proteomic analysis, and mRNA profiling by microarray analysis, to define these pathways and develop a comprehensive catalogue of proteins and gene expression patterns during cartilage development a ....Proteomic and Transcriptional Profiling of Cartilage. Gene expression and signalling pathways that regulate cartilage formation, and its orderly transition to bone, are poorly described. Our studies will, for the first time, combine two complementary cutting-edge approaches, protein identification by proteomic analysis, and mRNA profiling by microarray analysis, to define these pathways and develop a comprehensive catalogue of proteins and gene expression patterns during cartilage development and bone formation. This information will provide insight into the regulation of cartilage differentiation, maturation and structure, and will provide a critical platform for the development of more sophisticated cartilage and bone biomaterials for improved tissue repair and regeneration.Read moreRead less
Molecular mechanisms of stem cell self-renewal. Muscle growth and regeneration is critically dependent on its stem cell compartment. We have discovered that the p38 MAPK pathway is essential for stem cell self-renewal in the C2C12 myogenic cell line. This proposal seeks to understand the molecular basis of stem cell self-renewal in skeletal muscles, data that may be applicable to many stem cell systems, and to the enormous promise of stem cell therapies for injury and diseases of the aged. We wi ....Molecular mechanisms of stem cell self-renewal. Muscle growth and regeneration is critically dependent on its stem cell compartment. We have discovered that the p38 MAPK pathway is essential for stem cell self-renewal in the C2C12 myogenic cell line. This proposal seeks to understand the molecular basis of stem cell self-renewal in skeletal muscles, data that may be applicable to many stem cell systems, and to the enormous promise of stem cell therapies for injury and diseases of the aged. We will attempt to alter the balance of stem cell production by enforced p38 expression, and take microarray and proteomics approaches to define stem cell pathways.Read moreRead less
Regulation of mammalian heart development by transcription factors FHL2, GATA-4 & FOG-2. FHL2 is involved in many biological processes including intracellular signaling and gene transcription. GATA and FOG proteins are critical for the development of diverse tissues, including the heart. Knowledge gained in this project will advance our understanding of many cellular processes, including heart development, and will contribute to our knowledge in Biology, Zoology and Veterinary Science. More spe ....Regulation of mammalian heart development by transcription factors FHL2, GATA-4 & FOG-2. FHL2 is involved in many biological processes including intracellular signaling and gene transcription. GATA and FOG proteins are critical for the development of diverse tissues, including the heart. Knowledge gained in this project will advance our understanding of many cellular processes, including heart development, and will contribute to our knowledge in Biology, Zoology and Veterinary Science. More specifically, it will contribute to Stem Cell research, a 'hot' area in the biotechnology industry, particularly towards building a strong base of expertise, skills and technological capability in this new field, and may even lead to the development of a commercial product e.g. a heart muscle cell-coated biomaterial to aid failing heart.Read moreRead less
Marsupial germ cells and genes. Germ cells are the most fascinating cells in the body, since theirs is the unique responsibility for transmitting life from generation to generation. Studies in mice have suggested that position in the embryo determines their origin, but the early embryology of the mouse is so different from that of other mammals that the events need confirming and extending in another species. The simplified embryology of the tammar wallaby makes it ideal for studying one of the ....Marsupial germ cells and genes. Germ cells are the most fascinating cells in the body, since theirs is the unique responsibility for transmitting life from generation to generation. Studies in mice have suggested that position in the embryo determines their origin, but the early embryology of the mouse is so different from that of other mammals that the events need confirming and extending in another species. The simplified embryology of the tammar wallaby makes it ideal for studying one of the most fundamental questions in the whole of biology: what is the basis for the primal distinction between sex and soma?Read moreRead less
How does the unilaminar blastocyst form an embryo? Marsupials are synonymous with Australia and they are scientifically amazing. An understanding how the single-layered marsupial blastocyst cells are directed to form the complex organisation of an embryo would help us understand the biology underlying the developmental potential of all cells. Understanding these processes is not only of great fundamental interest to developmental biology but also for the development of embryonic stem cell lines. ....How does the unilaminar blastocyst form an embryo? Marsupials are synonymous with Australia and they are scientifically amazing. An understanding how the single-layered marsupial blastocyst cells are directed to form the complex organisation of an embryo would help us understand the biology underlying the developmental potential of all cells. Understanding these processes is not only of great fundamental interest to developmental biology but also for the development of embryonic stem cell lines. This research will continue Australia's high profile in reproductive biology using one of our iconic native mammals. A greater understanding of marsupial reproduction will also contribute to management of our threatened marsupial populations.Read moreRead less
Identification of nuclear reprogramming factors in oocyte cytoplasm. The mature oocyte contains dominant factors that are capable of erasing tissue specific gene expression profiles of somatic cells. These reprogramming factors would be valuable for dedifferentiation of cells and for nuclear transfer in animal cloning. The research involves determination of reprogramming factors present in active cytoplasm following enucleation of the germinal vesicle, blockage of transcription and translation, ....Identification of nuclear reprogramming factors in oocyte cytoplasm. The mature oocyte contains dominant factors that are capable of erasing tissue specific gene expression profiles of somatic cells. These reprogramming factors would be valuable for dedifferentiation of cells and for nuclear transfer in animal cloning. The research involves determination of reprogramming factors present in active cytoplasm following enucleation of the germinal vesicle, blockage of transcription and translation, and timed cultures. The assays will involve maintenance of reprogramming ability and erasure of somatic gene transcription. By subtractive elimination the function of isolated proteins which are involved in reprogramming will be identified for potential recombinant production.Read moreRead less
A new paradigm of gene regulation - implications in embryogenesis and disease. The proposed analysis of a new paradigm of gene regulation will provide a new key to understanding genome function and inform some of the most compelling biological issues of our time such as stem cell biology, tissue and organ regeneration and genetic programming. The insights and technologies developed in this program will be widely applicable in biotechnological and pharmacogenomic research in Australia and worldwi ....A new paradigm of gene regulation - implications in embryogenesis and disease. The proposed analysis of a new paradigm of gene regulation will provide a new key to understanding genome function and inform some of the most compelling biological issues of our time such as stem cell biology, tissue and organ regeneration and genetic programming. The insights and technologies developed in this program will be widely applicable in biotechnological and pharmacogenomic research in Australia and worldwide, and assert Australia's leadership in this area of research.Read moreRead less
Lungfish Paired Fins and the Origin of Limbs as an Evolutionary Novelty. This project will utilise a uniquely Australian animal, the lungfish, to address a hitherto unresolved problem of considerable scientific significance - how a fish fin evolved into a tetrapod (four-legged animal) limb. The Australian lungfish is the most primitive of the four surviving genera of lobe-finned fish and is recognised as the closest living ancestor to the tetrapods. It is listed as 'vulnerable' in its native ha ....Lungfish Paired Fins and the Origin of Limbs as an Evolutionary Novelty. This project will utilise a uniquely Australian animal, the lungfish, to address a hitherto unresolved problem of considerable scientific significance - how a fish fin evolved into a tetrapod (four-legged animal) limb. The Australian lungfish is the most primitive of the four surviving genera of lobe-finned fish and is recognised as the closest living ancestor to the tetrapods. It is listed as 'vulnerable' in its native habitat. Macquarie University, however, has the only captive breeding population of lungfish in the world. We are thus uniquely placed to address critically important questions concerning the evolution of fish into tetrapods. Read moreRead less
Understanding the control of male germ-line development by the germline-restrictive silencing factor in plants. The world population is currently increasing at an unprecedented rate, with a concomitant requirement to double the food production from the same amount of arable land. To ensure global political and social stability, equitably increasing sustainable food production without compromising environmental integrity remains a major challenge. This proposal investigates the molecular mechanis ....Understanding the control of male germ-line development by the germline-restrictive silencing factor in plants. The world population is currently increasing at an unprecedented rate, with a concomitant requirement to double the food production from the same amount of arable land. To ensure global political and social stability, equitably increasing sustainable food production without compromising environmental integrity remains a major challenge. This proposal investigates the molecular mechanisms underlying male germ line initiation and development in plants. Switching off male gamete development in some crop plants will create male sterile lines, which, when crossed with genetically distinct lines, will have the potential to produce hybrids that yield 20-30 percent more crop without additional inputs. Read moreRead less
Epigenetic programming of plant sperm cells. Most of the grains and seeds that form the world's food supply are the result of the successful functioning of sperm and egg cells during fertilisation. This proposal aims to investigate the nature of sperm cell genome programming in plants and unravel molecular processes that give these cells their unique identity. This innovative and challenging research will also provide an excellent opportunity for training the next generation of scientists. The o ....Epigenetic programming of plant sperm cells. Most of the grains and seeds that form the world's food supply are the result of the successful functioning of sperm and egg cells during fertilisation. This proposal aims to investigate the nature of sperm cell genome programming in plants and unravel molecular processes that give these cells their unique identity. This innovative and challenging research will also provide an excellent opportunity for training the next generation of scientists. The outcomes of this proposal will enhance Australia's international lead in this field and will pave the way toward the development of new approaches for sustaining and enhancing crop productivity under changing environmental conditions. Read moreRead less