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The function of the ribbon structure of the Golgi apparatus in vertebrates. The aim of the project is to determine the function of the Golgi ribbon structure in higher order cell functions, including metabolism, cell cycle, and cell polarity in both cultured cells and whole organisms. Understanding of the functions of the Golgi has been restricted to the regulation of glycosylation and membrane transport. However, it is now recognised that the Golgi apparatus feeds into the wiring of a range of ....The function of the ribbon structure of the Golgi apparatus in vertebrates. The aim of the project is to determine the function of the Golgi ribbon structure in higher order cell functions, including metabolism, cell cycle, and cell polarity in both cultured cells and whole organisms. Understanding of the functions of the Golgi has been restricted to the regulation of glycosylation and membrane transport. However, it is now recognised that the Golgi apparatus feeds into the wiring of a range of cellular networks in higher organisms such as cell polarisation, directed migration, metabolism and autophagy. Vertebrates have evolved mechanisms for joining individual Golgi stacks into a ribbon structure. The relevance of this ribbon structure remains a mystery. The project aims to answer this major question in cell biology.Read moreRead less
Metabolite regulation of mitochondrial fission. This project aims to understand how the function and health of mitochondria – the energy producing structures in cells - are controlled by fat molecules. The project expects to integrate cutting edge techniques and instrumentation to generate new knowledge of how fat molecules interact with, and influence, enzymes that control how cells maintain their mitochondria in response to nutrient state. An anticipated goal is to define a fingerprint for enz ....Metabolite regulation of mitochondrial fission. This project aims to understand how the function and health of mitochondria – the energy producing structures in cells - are controlled by fat molecules. The project expects to integrate cutting edge techniques and instrumentation to generate new knowledge of how fat molecules interact with, and influence, enzymes that control how cells maintain their mitochondria in response to nutrient state. An anticipated goal is to define a fingerprint for enzymes regulated by fat molecules that will be of great interest to researchers across many branches of life sciences. Expected outcomes and benefits will be deeper understanding of fat molecules as nutrient signalling metabolites, and how they influence cell metabolism, growth and development.Read moreRead less
Regulation of lipolysis: new players, new paradigms. The way in which fat is broken down is poorly understood. This research will determine how important proteins in fat breakdown are turned on and off. By understanding this relationship, effective pharmaceutical treatments will be developed that will enhance the capacity to burn fat and ultimately reduce the incidence of type 2 diabetes and cardiovascular disease, and ease the associated financial burden on the community and healthcare system. ....Regulation of lipolysis: new players, new paradigms. The way in which fat is broken down is poorly understood. This research will determine how important proteins in fat breakdown are turned on and off. By understanding this relationship, effective pharmaceutical treatments will be developed that will enhance the capacity to burn fat and ultimately reduce the incidence of type 2 diabetes and cardiovascular disease, and ease the associated financial burden on the community and healthcare system. Understanding fat breakdown is also important for developing new processing technologies in the food industry.Read moreRead less
Molecular basis of skeletal muscle lipoapoptosis. High levels of fat in cells are associated with obesity and type 2 diabetes, medical conditions that have increased dramatically in prevalence in Australia. High fat levels in cells also causes cell death. This research will determine the mechanisms by which excessive fat storage leads to cell death and whether this leads to insulin resistance and type 2 diabetes. By understanding this relationship, effective pharmaceutical treatments will be dev ....Molecular basis of skeletal muscle lipoapoptosis. High levels of fat in cells are associated with obesity and type 2 diabetes, medical conditions that have increased dramatically in prevalence in Australia. High fat levels in cells also causes cell death. This research will determine the mechanisms by which excessive fat storage leads to cell death and whether this leads to insulin resistance and type 2 diabetes. By understanding this relationship, effective pharmaceutical treatments will be developed that will ultimately reduce the incidence of type 2 diabetes, and ease the associated financial burden on the community and healthcare system.Read moreRead less
Characterization of the dark metabolome of eukaryotic cells. The project aims to investigate the full metabolic potential of a group of eukaryotic organisms using advanced analytical and computational techniques. It will identify novel metabolites and enzyme activities that are currently not predicted from genome annotations. Expected outcomes of the project include the delineation of new metabolic processes that are common to all eukaryotes, the characterization of new enzymes families, and the ....Characterization of the dark metabolome of eukaryotic cells. The project aims to investigate the full metabolic potential of a group of eukaryotic organisms using advanced analytical and computational techniques. It will identify novel metabolites and enzyme activities that are currently not predicted from genome annotations. Expected outcomes of the project include the delineation of new metabolic processes that are common to all eukaryotes, the characterization of new enzymes families, and the generation of comprehensive metabolic databases. An improved understanding of cellular metabolism will provide direct benefits in biotechnology, food production, environmental monitoring and the diagnosis and treatment of human metabolic and infectious diseases. Read moreRead less
Novel mechanisms controlling signaling by adenosine monophosphate-activated protein kinase, central regulator of energy homeostasis. Sedentary lifestyles and consumption of high energy foods have led to dramatic increases in the incidence of obesity-related metabolic diseases such as type 2 diabetes and cardiovascular disease, placing enormous financial and medical burden on the Australian economy. An attractive drug target to treat these diseases is AMP-activated protein kinase (AMPK), which fu ....Novel mechanisms controlling signaling by adenosine monophosphate-activated protein kinase, central regulator of energy homeostasis. Sedentary lifestyles and consumption of high energy foods have led to dramatic increases in the incidence of obesity-related metabolic diseases such as type 2 diabetes and cardiovascular disease, placing enormous financial and medical burden on the Australian economy. An attractive drug target to treat these diseases is AMP-activated protein kinase (AMPK), which functions as both a cellular fuel gauge and co-ordinator of whole-body metabolism. Building on recent breakthroughs made at St. Vincent's Institute, this project will produce innovative research into novel mechanisms that control AMPK. These discoveries will greatly increase our understanding of AMPK regulation by cellular processes, and aid the design of more effective AMPK drugs.Read moreRead less
The selective elimination of mitochondria from yeast cells: regulation and molecular mechanism . For healthy cells the quality of the mitochondrion, the cellular power plant, must be maintained. The results of this research will contribute to an understanding of the molecular mechanism for the removal of mitochondria from the cell, and ultimately inspire strategies for the treatment of diseases that result from faulty mitochondria.
Investigation of a Novel Protein Implicated in Phosphate Metabolism in Bacteria. Phosphate is an important nutrient for all forms of life on Earth. A novel bacterial protein has been identified that appears to be important for the uptake or processing of phosphate, since mutants lacking the protein grow poorly inside certain cells of the human immune system (where phosphate levels are low) and in media containing low phosphate. The aims of this project are: to determine the role of the protein b ....Investigation of a Novel Protein Implicated in Phosphate Metabolism in Bacteria. Phosphate is an important nutrient for all forms of life on Earth. A novel bacterial protein has been identified that appears to be important for the uptake or processing of phosphate, since mutants lacking the protein grow poorly inside certain cells of the human immune system (where phosphate levels are low) and in media containing low phosphate. The aims of this project are: to determine the role of the protein by examining all phosphate containing molecules in our mutants; to determine its location in bacteria and functional domains; to identify other affected genes in our mutants; and, to find proteins that interact with this new protein. This project expects to demonstrate the importance of this protein in phosphate metabolism in bacteria.Read moreRead less
Regulatory mechanisms in skeletal muscle lipid hydrolysis. The regulation of intramuscular triglyceride (fat) utilisation by human skeletal muscle is largely unknown. Our contention is that the specialized protein enzyme, hormone sensitive lipase (HSL), has a fundamental role in intramuscular triacylglycerol utilisation and is regulated by both intramuscular levels of key metabolites and circulating hormone concentrations. We also propose control points subsequent to HSL activation are important ....Regulatory mechanisms in skeletal muscle lipid hydrolysis. The regulation of intramuscular triglyceride (fat) utilisation by human skeletal muscle is largely unknown. Our contention is that the specialized protein enzyme, hormone sensitive lipase (HSL), has a fundamental role in intramuscular triacylglycerol utilisation and is regulated by both intramuscular levels of key metabolites and circulating hormone concentrations. We also propose control points subsequent to HSL activation are important for triglyceride hydrolysis. Our proposed project examines these factors and will enhance our understanding of the regulation of muscle fat use, thereby leading to potential metabolic strategies (nutritional, pharmacological) that enhance skeletal muscle function at rest and during exercise.Read moreRead less
The cell wall substrate delivery mechanisms in plants. This project aims to study the delivery of substrates plants need to biosynthesise sugar polymers. Sugar polymers play key structural and functional roles in plant development and determine quality for all plant-based products including food, textile fibres, building materials and renewable biomass. However, unknown mechanisms regulate and control the transport mechanisms that deliver the building blocks for polysaccharide biosynthesis. This ....The cell wall substrate delivery mechanisms in plants. This project aims to study the delivery of substrates plants need to biosynthesise sugar polymers. Sugar polymers play key structural and functional roles in plant development and determine quality for all plant-based products including food, textile fibres, building materials and renewable biomass. However, unknown mechanisms regulate and control the transport mechanisms that deliver the building blocks for polysaccharide biosynthesis. This project is expected to increase understanding of nucleotide sugar transport and develop and enhance the biological toolbox for applications involving modelling and engineering of plants, synthesis of industrial biopolymers and production of functional foods.Read moreRead less