Linkage Infrastructure, Equipment And Facilities - Grant ID: LE150100148
Funder
Australian Research Council
Funding Amount
$150,916.00
Summary
An STM/AFM Facility for Electroactive Materials Characterisation. A Scanning Tunnelling Microscope (STM)/Atomic Force Microscope (AFM) facility for electroactive materials characterisation: This project is expected to address an identified need for the characterisation of electroactive structures using scanning probe microscopy and builds on local expertise in allied methods. The instrumentation includes an electrochemical STM for electrical testing of molecular wires, switches, transistors and ....An STM/AFM Facility for Electroactive Materials Characterisation. A Scanning Tunnelling Microscope (STM)/Atomic Force Microscope (AFM) facility for electroactive materials characterisation: This project is expected to address an identified need for the characterisation of electroactive structures using scanning probe microscopy and builds on local expertise in allied methods. The instrumentation includes an electrochemical STM for electrical testing of molecular wires, switches, transistors and other single molecule electronic components, together with a pico-force tunnelling AFM (PF-TUNA) for the measurement and correlation of nano mechanical and electrical properties of fragile structures over larger areas. The facility will be a core asset for researchers that use electroactive material on conducting substrates in fields including fundamental corrosion science, nanotechnology, and moltronics.Read moreRead less
Identification And Characterisation Of Human Telomerase Holoenzyme Components
Funder
National Health and Medical Research Council
Funding Amount
$325,091.00
Summary
DNA is packaged into linear structures - chromosomes - that have two ends, called telomeres. When cells proliferate, their telomeres normally shorten slightly, and this ultimately limits the number of times cells can proliferate. This limitation is thought to contribute to ageing. Some tissues normally have a high rate of cell turnover (for example in the bone marrow which is constantly producing large numbers of new blood cells), and therefore a need for very extensive cellular proliferation. I ....DNA is packaged into linear structures - chromosomes - that have two ends, called telomeres. When cells proliferate, their telomeres normally shorten slightly, and this ultimately limits the number of times cells can proliferate. This limitation is thought to contribute to ageing. Some tissues normally have a high rate of cell turnover (for example in the bone marrow which is constantly producing large numbers of new blood cells), and therefore a need for very extensive cellular proliferation. In these tissues, an enzyme called telomerase slows down (but does not completely prevent) the rate of telomere shortening by replacing some of the DNA that is lost as a result of proliferation. Telomerase is a complex enzyme with a number of subunits. In the past few years, it has started to become clear that inherited deficiencies of some of these subunits cause diseases in which cellular proliferation starts to fail at a young age. These patients typically die of bone marrow failure. In contrast to conditions where there is telomerase deficiency, the great majority of cancers have inappropriately high levels of telomerase activity which allow cancer cells to continue dividing without limit. Telomerase is therefore regarded as a very promising target for new cancer treatments. In view of the importance of telomerase to human health, it may seem very surprising that we do not yet know all of its subunits. The reason for this is that, even in telomerase-positive cancer cells, the amount of telomerase present is vanishingly small which has made it impossible so far to obtain sufficient quantities for even the most sensitive analytical techniques. We are using very large numbers of human cells grown in a bioreactor, and have devised a highly efficient method for purifying telomerase from them. We will analyse the purified telomerase by contemporary mass spectroscopy techniques, identify all of the subunits, and characterise their contribution to telomerase function.Read moreRead less
Genetic Variation And Host-parasite Interactions Of Sarcoptes Scabiei
Funder
National Health and Medical Research Council
Funding Amount
$294,536.00
Summary
Scabies is a disease of skin caused by the burrowing of the 'itch' mite Sarcoptes scabiei. Although up to 45 different host species can be infested by this mite, this organism is currently classified as a single species existing as multiple strains or varieties. Previous studies have failed to identify any structural differences between host-associated populations, suggesting a single gene pool. Our recent molecular study of scabies in people and dogs, from Aboriginal communities in the Northern ....Scabies is a disease of skin caused by the burrowing of the 'itch' mite Sarcoptes scabiei. Although up to 45 different host species can be infested by this mite, this organism is currently classified as a single species existing as multiple strains or varieties. Previous studies have failed to identify any structural differences between host-associated populations, suggesting a single gene pool. Our recent molecular study of scabies in people and dogs, from Aboriginal communities in the Northern Territory and the North and South Americas, using DNA fingerprinting techniques, suggested mites cluster by host species with no evidence of cross-transmission. However although this data seems to suggest that these sub-species deserve species status, another molecular study suggests Sarcoptes is a single species, presumably a result of interbreeding. Understanding interbreeding between populations is important in the control of the disease and in controlling resistance to acaricides. We wish to further characterise the genetic separation of different 'strains' or populations of mites by studying the evolutionary gene flow between host-associated populations. We will use a mitochondrial DNA marker that will clarify fine scale transmission processes and more clearly delineate the biological species status of S. scabiei. Recent in vitro data and clinical evidence in a patient with severe crusted scabies indicated resistance to ivermectin, the treatment of choice for these patients. We will investigate the role and genetic mechanisms of ivermectin resistance. This is important for future control programs, as acaricide resistance can spread rapidly in parasite populations.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120102271
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
High performance organic optoelectronic devices - the role of charge carrier lifetime. Organic solar cells offer a sustainable solution to energy production helping to address the challenge of climate change. This project aims to understand the processes that control device performance and to improve solar cells based upon organic semiconductors with the potential to be extremely cheap, recyclable, and mechanically flexible.
Novel advances in sub-nanometer imaging. After two decades of research the first wave of applications in nanotechnology and nanobiology is breaking. Immediately key to further progress in both areas is the ability to characterise the structure of such systems and also their evolution on very short time scales. This research project places Australia at the forefront in this endeavour.
Functional Characterisation Of Pendrin: The Anion Transporter Causing Pendred Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$211,527.00
Summary
Mutations in the human pendrin protein cause progressive hearing loss from an early age in Pendred syndrome. Using techniques of molecular and cellular biology, we intend to test the effects of Pendred-causing mutations on the function of pendrin expressed in frog and cultured mammalian cells. Our approach will enable us to determine how pendrin functions in both the normal and diseased states, which is currently unknown. This will allow us to consider ways of correcting the ion channel defect a ....Mutations in the human pendrin protein cause progressive hearing loss from an early age in Pendred syndrome. Using techniques of molecular and cellular biology, we intend to test the effects of Pendred-causing mutations on the function of pendrin expressed in frog and cultured mammalian cells. Our approach will enable us to determine how pendrin functions in both the normal and diseased states, which is currently unknown. This will allow us to consider ways of correcting the ion channel defect associated with the Pendred syndrome.Read moreRead less
Cloning And Characterisation Of A Bipolar Disorder Susceptibility Gene On Chromosome 15q
Funder
National Health and Medical Research Council
Funding Amount
$347,621.00
Summary
Bipolar disorder is a severe mood disorder, characterised by aberrant mood swings resulting in periods of mania and depression. We need to define more clearly the biological basis of bipolar disorder to improve diagnosis and treatment. Bipolar disorder is highly heritabile allowing the use of genetics to identify the predisposing genes. Our aim is to identify a bipolar susceptibility gene on chromosome 15 and to understand how this gene contributes to the risk of developing bipolar disorder.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE180100090
Funder
Australian Research Council
Funding Amount
$1,136,244.00
Summary
Xe-plasma dual beam for advanced future materials. This project aims to establish a state of the art Xe-Plasma dual-beam facility providing characterisation and fabrication capabilities to Australia’s research community. The project will use two beams - one Xe, the other electrons - to mill the surface of bulk materials which are subsequently analysed by electron or ion beam techniques to determine atomic-scale microstructure(s) and compositions. Anticipated outcomes are advanced materials engin ....Xe-plasma dual beam for advanced future materials. This project aims to establish a state of the art Xe-Plasma dual-beam facility providing characterisation and fabrication capabilities to Australia’s research community. The project will use two beams - one Xe, the other electrons - to mill the surface of bulk materials which are subsequently analysed by electron or ion beam techniques to determine atomic-scale microstructure(s) and compositions. Anticipated outcomes are advanced materials engineering and new knowledge about ancient and future materials. This is expected to provide significant advances across a variety of fields including material science, engineering and geology and enhance trans-disciplinary collaborations.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100121
Funder
Australian Research Council
Funding Amount
$1,000,000.00
Summary
An analytical transmission electron microscope for the investigation of functional materials, earth processes and novel condensed matter. Sustainablity depends on the delivery of clean energy, pristine water and air, and the manufacture of consumer products with small environmental footprints. Modelling long-term impacts requires an understanding of the hydro-geological cycles. The technologies are well known—efficient electronics, fuel cells, lightweight composites, and so on—but delivery is ....An analytical transmission electron microscope for the investigation of functional materials, earth processes and novel condensed matter. Sustainablity depends on the delivery of clean energy, pristine water and air, and the manufacture of consumer products with small environmental footprints. Modelling long-term impacts requires an understanding of the hydro-geological cycles. The technologies are well known—efficient electronics, fuel cells, lightweight composites, and so on—but delivery is not straightforward. It is clear, however, that novel materials manipulated at fine scales will be key. Transmission electron microscopy (TEM) guides the development of sustainable technologies. The new TEM facility at ANU will accelerate current studies, by enhancing the materials research portfolio, and extending national and international collaborations in materials, geological and earth sciences.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE190100668
Funder
Australian Research Council
Funding Amount
$422,574.00
Summary
Cysteamine dioxygenases: novel oxygen sensors implicated in hypoxia? This project aims to characterise and manipulate a novel oxygen sensing system, the cysteamine dioxygenases, to help understand how mammalian cells respond to low oxygen concentrations, a condition known as hypoxia. A number of the world’s most destructive diseases can impair oxygen delivery, altering biochemical landscapes. By understanding how cells respond to fluctuations in oxygen, the project expects to develop effective m ....Cysteamine dioxygenases: novel oxygen sensors implicated in hypoxia? This project aims to characterise and manipulate a novel oxygen sensing system, the cysteamine dioxygenases, to help understand how mammalian cells respond to low oxygen concentrations, a condition known as hypoxia. A number of the world’s most destructive diseases can impair oxygen delivery, altering biochemical landscapes. By understanding how cells respond to fluctuations in oxygen, the project expects to develop effective methods to treat these detrimental conditions. Characterisation of the cysteamine dioxygenases could establish a novel mechanism by which cells monitor changes in oxygen, assisting in understanding hypoxia and disease. The project will also enable new cysteine initiating substrates to be identified, allowing the full impact of this regulatory process to be appreciated in mammals.Read moreRead less