Understanding the molecular mechanisms regulating neuronal fusion. Neurons are tightly connected individual cells that communicate through chemical and electrical signals, and this project aims to discover the key molecules that allow these cells to remain as individual units without fusing with each other. The nervous system, unlike other tissues, is made of discrete individual cells, connected by chemical and electrical synapses but not by cytoplasmic continuity. However, how this is achieved ....Understanding the molecular mechanisms regulating neuronal fusion. Neurons are tightly connected individual cells that communicate through chemical and electrical signals, and this project aims to discover the key molecules that allow these cells to remain as individual units without fusing with each other. The nervous system, unlike other tissues, is made of discrete individual cells, connected by chemical and electrical synapses but not by cytoplasmic continuity. However, how this is achieved and how neurons maintain their individuality during development, remodelling and ageing is unknown. The project aims to address this gap using a genetic approach and the nematode Caenorhabditis elegans as an experimental system. The results may provide insights into how the nervous system develops and functions.Read moreRead less
Interactions between phenome and genome at developing CNS synapses during synaptic refinement. Activity-dependent changes in synaptic transmission are vital to development and function of central neuronal networks. However, the critical factors regulating developmental changes in synaptic signals remain largely unknown. We will correlate functional changes in synaptic responses at glutamate-releasing synapses with changes in glutamate receptor composition at a critical period during developmen ....Interactions between phenome and genome at developing CNS synapses during synaptic refinement. Activity-dependent changes in synaptic transmission are vital to development and function of central neuronal networks. However, the critical factors regulating developmental changes in synaptic signals remain largely unknown. We will correlate functional changes in synaptic responses at glutamate-releasing synapses with changes in glutamate receptor composition at a critical period during development, test whether synaptic activation of receptors is required for these changes and define the pattern of activity-dependent changes in gene expression necessary for developmental changes in synaptic transmission. Understanding this interaction between synaptic phenome and activity-dependent genomic expression will expand our understanding of brain development and function.Read moreRead less
Uncovering The Neural Mechanisms Of Obsessive-compulsive Disorder Using Brain Modelling
Funder
National Health and Medical Research Council
Funding Amount
$581,628.00
Summary
Obsessive-compulsive disorder (OCD) is an incurable mental illness and current therapies only mitigate its symptoms for a portion of individuals. Thus, there is a need to identify the neural causes of OCD to develop personalised therapies. We will combine mathematical modelling, computer simulations, and clinical and neuroimaging data to develop the first model of OCD. Outcomes from this study will enable targeted OCD research and the discovery of brain mechanisms supporting treatment response.
Centre For Research Excellence In Speech And Language Neurobiology (CRE-SLANG)
Funder
National Health and Medical Research Council
Funding Amount
$2,491,340.00
Summary
Half a million Australian children have a speech/language disorder, tripling their changes of poor academic outcomes, limited employment options and social isolation. Current speech therapy is limited, focusing on symptoms and ignoring evidence on underlying aetiologies. By identifying and translating findings on new genes and brain pathways leading to speech and language disorders, we will transform detection, diagnosis, prognosis and genetic counselling of affected children and their families.
Development of novel reagents that specifically counteract EphA4 to enhance axonal regeneration. This project will examine the role of EphA4, an important guidance protein, in neural cell regeneration. The goal is to understand the signalling mechanisms that inhibit regeneration in the central nervous system and to develop novel biological agents to overcome these processes and promote functional recovery after nervous system injury or disease.
Click chemistry to reveal how neurons and glia shape perineuronal nets . The extracellular matrix (ECM) and its perineuronal nets (which are net-like structures with holes wrapped around neurons) are largely underexplored, despite representing a remarkable 20% of the brain’s total volume and having been suggested to be involved in many brain functions. Interestingly, digestion of the ECM improves learning and memory, but deficits return once the ECM has reformed. However, how this ECM remodellin ....Click chemistry to reveal how neurons and glia shape perineuronal nets . The extracellular matrix (ECM) and its perineuronal nets (which are net-like structures with holes wrapped around neurons) are largely underexplored, despite representing a remarkable 20% of the brain’s total volume and having been suggested to be involved in many brain functions. Interestingly, digestion of the ECM improves learning and memory, but deficits return once the ECM has reformed. However, how this ECM remodelling is organised at a cell-type level is not understood. Here we aim to close this knowledge gap, using cutting-edge technology including bioconjugation and ultrasound-mediated cargo delivery. Together, this project aims to contribute to a deeper understanding of this major brain compartment in neuronal function. Read moreRead less
Neurodevelopment During Adolescence: A Longitudinal Imaging Study
Funder
National Health and Medical Research Council
Funding Amount
$1,706,589.00
Summary
Adolescence is a risk period for the emergence of psychiatric disorders. It is also a time of rapid change in the brain, but few studies have detailed changes in neurodevelopment during this sensitive period. We will study twins from early adolescence and use brain imaging to investigate changing brain patterns as the brain matures, and thereby, gain insight into factors responsible for increasing our risk or resilience for major mental health conditions and optimal points for intervention.
A Prospective Study Of Language Impairment And Recovery Following Surgery For Brain Tumours
Funder
National Health and Medical Research Council
Funding Amount
$861,342.00
Summary
This multi-site project will investigate the incidence and nature of post-operative language difficulties (aphasia) in patients following surgery for left hemisphere primary brain tumours. It will provide comprehensive data concerning risk factors for post-surgical aphasia in Australian patients, in addition to important information about the brain lesions responsible for its various clinical presentations. This information will be used to generate recommendations for clinical practice.