Understanding how the primate brain processes visual information. Being able to see is a crucial aspect of our daily lives, which happens so effortlessly that it tends to be taken for granted. In comparison with other animals and artificial systems, the primate visual cortex is unsurpassed in its capacity to interpret complex and dynamic environments, in a manner that is fast and computationally robust. Discovering how this happens in terms of interactions between cells in the brain can help us ....Understanding how the primate brain processes visual information. Being able to see is a crucial aspect of our daily lives, which happens so effortlessly that it tends to be taken for granted. In comparison with other animals and artificial systems, the primate visual cortex is unsurpassed in its capacity to interpret complex and dynamic environments, in a manner that is fast and computationally robust. Discovering how this happens in terms of interactions between cells in the brain can help us design more efficient artificial systems capable of vision. This in turn can have profound implications for the creation of new technologies such as artificial eyes, autonomous robots, and intelligent sensors, and may also result in future benefits for medical science.Read moreRead less
Anti-ageing role for relaxin in blood vessels. Arteries stiffen with age. This is due to increased arterial smooth muscle tone and alterations in the extracellular matrix. In a sense, the artery undergoes ?fibrosis? with aging. In light of the anti-fibrotic attributes of the peptide hormone relaxin observed in other tissues, this collaborative project will investigate the potential role for relaxin in opposing arterial ?fibrosis? associated with aging. We will test the hypothesis that a reductio ....Anti-ageing role for relaxin in blood vessels. Arteries stiffen with age. This is due to increased arterial smooth muscle tone and alterations in the extracellular matrix. In a sense, the artery undergoes ?fibrosis? with aging. In light of the anti-fibrotic attributes of the peptide hormone relaxin observed in other tissues, this collaborative project will investigate the potential role for relaxin in opposing arterial ?fibrosis? associated with aging. We will test the hypothesis that a reduction in arterial relaxin expression in older animals is a major cause of arterial stiffening. Further studies will investigate the mechanisms by which relaxin administration can alleviate this phenomenon.Read moreRead less
Relaxin action in the heart, kidney, lung and uterus: understanding fibrosis. Relaxin is a peptide hormone associated with pregnancy. We have recently generated a relaxin gene knockout mouse and exciting preliminary data show that without relaxin, non-pregnant mice develop signs of fibrosis in the heart, lung and uterus. Combining our expertise in molecular biology, pharmacology and physiology, the overall objective of this project is to investigate the functions and mechanisms of relaxin action ....Relaxin action in the heart, kidney, lung and uterus: understanding fibrosis. Relaxin is a peptide hormone associated with pregnancy. We have recently generated a relaxin gene knockout mouse and exciting preliminary data show that without relaxin, non-pregnant mice develop signs of fibrosis in the heart, lung and uterus. Combining our expertise in molecular biology, pharmacology and physiology, the overall objective of this project is to investigate the functions and mechanisms of relaxin action in these organs. Our findings will provide important basic information on relaxin physiology and enable us to implement a long-term partnership with Connetics to understand how relaxin regulates collagen production and/or the development of fibrosis.Read moreRead less
DNA Dynamics is Shear and Extensional Flows: Simulation and Single Molecule Experiments. The proposal seeks to establish a collaboration between Monash University and Stanford University in order to combine several recent experimental and theoretical advances that have been made by the individual groups in single molecule experimental techniques, extensional rheometry, and molecular rheology, to obtain new insights into the structure and dynamics of biopolymers. The central aim is to make a sign ....DNA Dynamics is Shear and Extensional Flows: Simulation and Single Molecule Experiments. The proposal seeks to establish a collaboration between Monash University and Stanford University in order to combine several recent experimental and theoretical advances that have been made by the individual groups in single molecule experimental techniques, extensional rheometry, and molecular rheology, to obtain new insights into the structure and dynamics of biopolymers. The central aim is to make a significant contribution towards bringing state-of-the-art techniques used for the characterization of polymeric systems to bear on the nature and origin of the elastic properties of biopolymers.Read moreRead less
The flow properties of proteins and other biopolymers. The living cell is an extraordinary organization with a vast variety of biomacromolecules carrying out myriads of functions with great specificity and accuracy. The key issue in cell biology is to unravel the structures of biopolymers and the deep connection that exists between structure and function. This interdisciplinary research program combines recent advances in experimental and theoretical rheology, with advances in protein science, t ....The flow properties of proteins and other biopolymers. The living cell is an extraordinary organization with a vast variety of biomacromolecules carrying out myriads of functions with great specificity and accuracy. The key issue in cell biology is to unravel the structures of biopolymers and the deep connection that exists between structure and function. This interdisciplinary research program combines recent advances in experimental and theoretical rheology, with advances in protein science, to investigate the response of biopolymers to deformation. This approach will lead to insights into the problem of protein folding, the interaction of biopolymers with surfaces, and the physical basis for the mechanical properties of biopolymers.Read moreRead less
Organisation of the cerebral cortex- what, if anything, is a cortical area? Currently, much effort is being directed towards elucidating the roles of different regions of the cerebral cortex. "Maps" of cortical areas have become essential points of reference, exerting a powerful influence on the way we think about the brain. However, is it really appropriate to model the cortex as a mosaic of well-defined areas? This project will challenge the assumptions underlying current brain mapping efforts ....Organisation of the cerebral cortex- what, if anything, is a cortical area? Currently, much effort is being directed towards elucidating the roles of different regions of the cerebral cortex. "Maps" of cortical areas have become essential points of reference, exerting a powerful influence on the way we think about the brain. However, is it really appropriate to model the cortex as a mosaic of well-defined areas? This project will challenge the assumptions underlying current brain mapping efforts. Its main benefits will be the refinement of strategies for brain mapping, including potential for better
application/interpretation of available medical technology, and unique insights on the mechanisms of development and evolution of the nervous system.
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FERTILIZATION IN VIVO AND IN VITRO IN AUSTRALIAN MARSUPIALS. Using reproductive technology previously undeveloped in Australian marsupials this study addresses the most significant question still unresolved in marsupial reproductive biology - 'How does fertilization occur?' We propose to investigate the morphological and functional characteristics of fertilisation and its roles in early development in marsupials, the uniqueness of these events and their evolutionary significance. These findings ....FERTILIZATION IN VIVO AND IN VITRO IN AUSTRALIAN MARSUPIALS. Using reproductive technology previously undeveloped in Australian marsupials this study addresses the most significant question still unresolved in marsupial reproductive biology - 'How does fertilization occur?' We propose to investigate the morphological and functional characteristics of fertilisation and its roles in early development in marsupials, the uniqueness of these events and their evolutionary significance. These findings will not only further our knowledge of reproduction in marsupials and shed light on the evolutionary factors underlying sperm and egg design but will provide tools for assisted breeding programs for threatened wildlife and for the regulation of over abundant species.Read moreRead less
Relaxin: molecular mechanisms of action in the reversal of fibrosis. Defects in relaxin and relaxin receptors are increasingly implicated as a cause of fibrosis which is associated with many disease processes. This study will examine the molecular mechanisms linking relaxin and fibrosis and will determine whether relaxin can be used to reverse the condition.
Tail-anchored membrane proteins: prediction, targeting, assembly and function. Using computer-based searches of genome sequence data, we now have a complete list of tail-anchored membrane proteins in the yeast Saccharomyces cerevisiae. These include a number of essential proteins, such as SNAREs and TOM proteins responsible for building cellular membranes in all organisms, including man. Of the additional protein sequences discovered in the search, 8 represent proteins of known function while 19 ....Tail-anchored membrane proteins: prediction, targeting, assembly and function. Using computer-based searches of genome sequence data, we now have a complete list of tail-anchored membrane proteins in the yeast Saccharomyces cerevisiae. These include a number of essential proteins, such as SNAREs and TOM proteins responsible for building cellular membranes in all organisms, including man. Of the additional protein sequences discovered in the search, 8 represent proteins of known function while 19 are novel. We propose to study the subcellular location of these 19 novel proteins, and solve how they are targeted to and inserted in membranes. We will also investigate the function of the newly-discovered proteins.Read moreRead less
The Properties of Enteric Reflexes Recorded in Vivo. The benefit of the work will be a clear understanding of how a key body system, the digestive system is controlled. This will bring a new understanding of how intestinal function is influenced by the food that we eat and also by medicinal compounds. In the longer term, it may lead to development of dietary programs that improve digestive health and to ways to test for adverse or beneficial effects of drugs on the intestine.