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The role of actin in driving bulk endocytosis in neurons and neurosecretory cells. Synaptic release of neurotransmitter is essential for neuronal communication. Following fusion, synaptic vesicle membrane is incorporated into the plasma membrane and retrieved by endocytosis to recover both lipids and essential vesicular proteins. The project will characterise how the actin cytoskeleton perform this function.
The evolution of dim light vision in vertebrates. High sensitivity (rod-based) vision has been extremely important for the survival and adaptive radiation of many vertebrates, including humans over evolutionary time. This multidisciplinary project will reveal the evolutionary and physiological constraints on early photoreception and the difficulties in operating over an enormous range of lighting conditions. Not only will the findings be crucial for our understanding of basic mechanisms of dim l ....The evolution of dim light vision in vertebrates. High sensitivity (rod-based) vision has been extremely important for the survival and adaptive radiation of many vertebrates, including humans over evolutionary time. This multidisciplinary project will reveal the evolutionary and physiological constraints on early photoreception and the difficulties in operating over an enormous range of lighting conditions. Not only will the findings be crucial for our understanding of basic mechanisms of dim light vision, but also provide potential insights into the physiological bases of various rod dystrophies affecting humans and the improved design of more sensitive cameras and safe light environments for rearing animals in captivity e.g. for aquaculture.Read moreRead less
Glycerotoxin, a unique tool to investigate the dynamic interactions between N-type Ca2+ channels and the exo-endocytic machinery. Communication between neurons relies on exocytosis, a process in which synaptic vesicles containing a neurotransmitter release their content in the extracellular synaptic cleft. We have recently discovered a unique neurotoxin called glycerotoxin (GLTx), which selectively activates Ca2+ channels (Cav2.2), linked with the exocytic machinery in the Central Nervous System ....Glycerotoxin, a unique tool to investigate the dynamic interactions between N-type Ca2+ channels and the exo-endocytic machinery. Communication between neurons relies on exocytosis, a process in which synaptic vesicles containing a neurotransmitter release their content in the extracellular synaptic cleft. We have recently discovered a unique neurotoxin called glycerotoxin (GLTx), which selectively activates Ca2+ channels (Cav2.2), linked with the exocytic machinery in the Central Nervous System. GLTx provide a new tool to further dissect the role of Cav2.2 in controlling neurotransmitter release. GLTx also greatly facilitates synaptic vesicle recycling, suggesting an unexpected link between Cav2.2 activation and the compensatory endocytic machinery. Our goal is to investigate functional coupling between Cav2.2 and the exo- and endocytic machineries using GLTx.Read moreRead less
The biological and pathological functions of TDP-43. The social and economic burden of neurodegenerative such as MND is enormous. A key histopathological hallmark of this and many other related diseases are deposits of the protein TDP-43. Our research aims at understanding its largely unknown functions, for example by generating transgenic animal models. These will form the base for the development for a TDP-43-directed drug treatment. The national benefit of this research is manifold: by deciph ....The biological and pathological functions of TDP-43. The social and economic burden of neurodegenerative such as MND is enormous. A key histopathological hallmark of this and many other related diseases are deposits of the protein TDP-43. Our research aims at understanding its largely unknown functions, for example by generating transgenic animal models. These will form the base for the development for a TDP-43-directed drug treatment. The national benefit of this research is manifold: by deciphering basic biological mechanisms, patenting new data, developing treatment strategies for un-curable and fatal disorders, and expanding links to Australian biotech and international pharmaceutical companies.Read moreRead less