Protein biosensors for detecting smoke exposure of grapes. Bush fires and controlled burns that take place in the vicinity of vineyards can lead to grape contamination with tasteless phenolic glucosides. Their hydrolysis during wine making leads to “smoke taint” – an unpleasant medicinal taste that can render wine undrinkable. We will apply a combination of organic synthesis, protein engineering and directed evolution to develop protein-based biosensors of phenolic glucosides. These biosensors w ....Protein biosensors for detecting smoke exposure of grapes. Bush fires and controlled burns that take place in the vicinity of vineyards can lead to grape contamination with tasteless phenolic glucosides. Their hydrolysis during wine making leads to “smoke taint” – an unpleasant medicinal taste that can render wine undrinkable. We will apply a combination of organic synthesis, protein engineering and directed evolution to develop protein-based biosensors of phenolic glucosides. These biosensors will be used to devise a simple portable colorimetric test that can be performed in the vineyard or the winery. The ability to rapidly determine the level of grape contamination with phenolic glucosides would give Australian wine growers and wine makers a powerful tool to mitigate the effects of bushfires.Read moreRead less
A novel platform for the biosynthesis of commercially valuable saxitoxins. Saxitoxins are potent microbial toxins, which pose a significant threat to food and water quality. Highly pure saxitoxins are required for environmental monitoring and studies of cell physiology. Certain analogues have also shown promise as long-lasting and non-addictive pain blockers. However, the procurement of these compounds from natural sources is convoluted and unsustainable. This project aims to use the latest synt ....A novel platform for the biosynthesis of commercially valuable saxitoxins. Saxitoxins are potent microbial toxins, which pose a significant threat to food and water quality. Highly pure saxitoxins are required for environmental monitoring and studies of cell physiology. Certain analogues have also shown promise as long-lasting and non-addictive pain blockers. However, the procurement of these compounds from natural sources is convoluted and unsustainable. This project aims to use the latest synthetic biology techniques to characterise, modify and express saxitoxin biosynthesis pathways, thereby providing a sustainable source of toxin analogues of value to industry and research. This novel 'green technology' will benefit the environment, human health and the Australian economy.Read moreRead less
Flipping the mattress: infinite polyurethane recycling by synthetic biology. Australia is covered in billions of tonnes of plastic and yet <10% is recycled today. Polyurethane (PU) is ubiquitous in our everyday lives, from lacquer coatings to elastane clothing to durable foam padding in car seats, cushions and mattresses. Currently, there are few avenues for PU recycling and much ends up in landfill e.g., a single mattress produces 15-20kg of PU foam waste. Luckily, biodegradation of PU can occu ....Flipping the mattress: infinite polyurethane recycling by synthetic biology. Australia is covered in billions of tonnes of plastic and yet <10% is recycled today. Polyurethane (PU) is ubiquitous in our everyday lives, from lacquer coatings to elastane clothing to durable foam padding in car seats, cushions and mattresses. Currently, there are few avenues for PU recycling and much ends up in landfill e.g., a single mattress produces 15-20kg of PU foam waste. Luckily, biodegradation of PU can occur naturally via various microbial means and from insects, like Galleria mellonella larvae. The overall aim of this research project is to understand plastic biodegradation and translate nature’s solutions into flexible and efficient synthetic enzyme technologies that can sustainably recycle commonly used PU foams. Read moreRead less
Developing macrophage-based technologies for tissue regeneration. Different tissues show distinct regenerative capacities with an organism and across the phylogeny. What underlies this diversity in regenerative ability at cellular and molecular level is far from clear. Building on foundational discoveries in zebrafish, this study seeks to determine if this capacity could, in part, be explained through the properties of a component of the innate immune system, the macrophage, which preliminary da ....Developing macrophage-based technologies for tissue regeneration. Different tissues show distinct regenerative capacities with an organism and across the phylogeny. What underlies this diversity in regenerative ability at cellular and molecular level is far from clear. Building on foundational discoveries in zebrafish, this study seeks to determine if this capacity could, in part, be explained through the properties of a component of the innate immune system, the macrophage, which preliminary data shows generates a transient pro-regenerative muscle stem cell niche in zebrafish. This study will determine if macrophage subtypes acts to coordinate regeneration in other tissues and systems and if a programable pro-regenerative cell can be made in vitro that stimulate regeneration in different settings.Read moreRead less
Ancestral enzyme engineering for designer fat products. Consumers are increasingly turning to plant-based alternatives of meat and dairy products due to concerns about health, animal welfare and sustainability. Taste, nutritional profile, protein content and limited variety are barriers that continue to challenge food manufacturers. This project aims to develop a process for the fermentation of specialty food oils and fats from agriculture production waste, that can deliver the flavour and nutri ....Ancestral enzyme engineering for designer fat products. Consumers are increasingly turning to plant-based alternatives of meat and dairy products due to concerns about health, animal welfare and sustainability. Taste, nutritional profile, protein content and limited variety are barriers that continue to challenge food manufacturers. This project aims to develop a process for the fermentation of specialty food oils and fats from agriculture production waste, that can deliver the flavour and nutritional benefits of meat and dairy products when added to plant-based alternatives. The outcomes should valorise existing agriculture and food waste, converting waste materials into valuable food ingredients.Read moreRead less
Characterising the transport and delivery of oligonucleotides . Short RNA and DNA molecules represent a class of macromolecules that have great potential, but to facilitate their trafficking across cellular and membrane barriers into specific sites of action is challenging. This project aims to develop and apply novel imaging approaches to track them in cells and tissues. Expected outcomes include better understanding of the trafficking across cellular and membrane barriers, and improved imaging ....Characterising the transport and delivery of oligonucleotides . Short RNA and DNA molecules represent a class of macromolecules that have great potential, but to facilitate their trafficking across cellular and membrane barriers into specific sites of action is challenging. This project aims to develop and apply novel imaging approaches to track them in cells and tissues. Expected outcomes include better understanding of the trafficking across cellular and membrane barriers, and improved imaging tools that could be used to further study the molecular mechanisms of accumulation, metabolism and trafficking of these molecules. This project should provide new strategies to target these molecules to specific cells and tissues, which have significant social and economic benefits to the Australian community.Read moreRead less
A humanised sensory neuron high-throughput screening platform . Sensory neurons are responsible for converting external stimuli such as touch or temperature into graded electrical signals that allow us to interact with the world around us. However, unlike other cell types, sensory neurons cannot proliferate and thus must be removed from human cadavers, or animals, in order to study their pharmacology and function. This limits our ability to understand neuronal signalling pathways. This project a ....A humanised sensory neuron high-throughput screening platform . Sensory neurons are responsible for converting external stimuli such as touch or temperature into graded electrical signals that allow us to interact with the world around us. However, unlike other cell types, sensory neurons cannot proliferate and thus must be removed from human cadavers, or animals, in order to study their pharmacology and function. This limits our ability to understand neuronal signalling pathways. This project aims to use sensory neurons derived from human stem cells to develop and optimise assays that can be used to study the pharmacology and function of human sensory neurons in vitro. This enhances access to critical model systems and technology platforms and removes the need for isolation of cells from cadavers. Read moreRead less
Rethinking and revitalising herbicides to counter resistance. Weeds and increasingly herbicide resistant weeds are the major yield penalty for agriculture. This project aims to develop innovative ways to overcome resistance. This project expects to (i) make herbicides work more efficiently, (ii) reveal a new mode of action for an under-used herbicide and (iii) assign breakdown pathways to herbicides. Expected outcomes of this project are to (i) to find rare, but truly synergistic herbicide combi ....Rethinking and revitalising herbicides to counter resistance. Weeds and increasingly herbicide resistant weeds are the major yield penalty for agriculture. This project aims to develop innovative ways to overcome resistance. This project expects to (i) make herbicides work more efficiently, (ii) reveal a new mode of action for an under-used herbicide and (iii) assign breakdown pathways to herbicides. Expected outcomes of this project are to (i) to find rare, but truly synergistic herbicide combinations; (ii) reveal a herbicide against which weeds outside of Japan have not evolved resistance to; and (iii) establish how best to make breakdown blockers. A benefit of using existing herbicides is the approaches are close to market, so with partner Nexgen Plants, its outcomes can be commercialised.Read moreRead less
Investigating the atomic structure of an immune cell inhibitory receptor. T cells play a key role in the adaptive immune system, whose reactivity must be controlled to prevent aberrant reactivity. Central to the function of T cells is the T cell antigen receptor, and a host of co-stimulatory molecules, co-receptors and inhibitory receptors. This proposal, in partnership with Immutep Ltd, aims to gain a basic understanding of the structure and function of a key inhibitory receptor found on T cel ....Investigating the atomic structure of an immune cell inhibitory receptor. T cells play a key role in the adaptive immune system, whose reactivity must be controlled to prevent aberrant reactivity. Central to the function of T cells is the T cell antigen receptor, and a host of co-stimulatory molecules, co-receptors and inhibitory receptors. This proposal, in partnership with Immutep Ltd, aims to gain a basic understanding of the structure and function of a key inhibitory receptor found on T cells, termed the Lymphocyte activation gene-3 (LAG-3). The proposal utilises a combination of cellular immunology and structural biology to gain insight into the form and function of the LAG-3 molecule. Ultimately this fundamental knowledge can be used by the biotechnology industry.Read moreRead less
Advanced plant breeding and food manufacturing for healthier bread. This project aims to generate bread containing high amounts of biologically available iron through targeted manipulation of plant-derived phytonutrients at several points along the wheat-to-bread supply chain. The project expects to generate new knowledge for developing healthier bread and address consumer demands for value-added food products. Anticipated outcomes are novel plant breeding and food manufacturing techniques that ....Advanced plant breeding and food manufacturing for healthier bread. This project aims to generate bread containing high amounts of biologically available iron through targeted manipulation of plant-derived phytonutrients at several points along the wheat-to-bread supply chain. The project expects to generate new knowledge for developing healthier bread and address consumer demands for value-added food products. Anticipated outcomes are novel plant breeding and food manufacturing techniques that enhance the nutritional composition of wheat grain and bread making products, resulting in higher-value agricultural commodities and breads. The project should benefit bread retailers and crop growers involved in Australia’s $4.7 billion bread market and reduce the environmental impacts of bread production.Read moreRead less