Mechanisms Of PTEN Regulation By Ndfip1 And Their Biological Consequences For Neuron Survival During Brain Injury
Funder
National Health and Medical Research Council
Funding Amount
$686,640.00
Summary
We have discovered a new protein (Ndfip1) that protects brain cells from death after brain injury from trauma and stroke. We will investigate why this protein is activated only in some, but not in other, brain cells after injury. In this application, we will study the mechanisms behind neuron protection, and use this information to explore how to increase the number of brain cells activating Ndfip1.
Regulation Of Glutamate Receptor Trafficking By The Calcium- And Lipid-binding Protein, Copine-6
Funder
National Health and Medical Research Council
Funding Amount
$548,690.00
Summary
Abnormal levels of cell surface receptors in neurons can lead to a variety of debilitating neurological disorders and neurodegenerative diseases. These levels are tightly regulated through the orchestrated movements of receptors from inside the neuron to the cell surface. In this project we will examine how the transport of cell surface receptors is regulated by an intracellular signalling molecule, called copine, which is important in both epilepsy and Alzheimer’s disease.
Deciphering The Mechanisms Underlying LRP-mediated Axon Guidance
Funder
National Health and Medical Research Council
Funding Amount
$370,659.00
Summary
Nerve damage can develop post injury or disease and are often very debilitating, slow to heal and cause increased pain. Our work aims to examine a new class of molecules that we show can activate selected fat-receptors on nerve cells to guide the growth of regenerating nerves. We will determine how these receptors function with the aim of developing a novel class of therapeutics directed at healing nerve damage.
Regulation Of Neural Progenitor Cell Self-renewal By The RNA-binding Protein ZFP36L1 During Development And Disease
Funder
National Health and Medical Research Council
Funding Amount
$345,401.00
Summary
The timely differentiation of neural stem cells is critical during development, and the unrestrained proliferation of neural stem cells in the adult can lead to deadly brain cancers such as glioma. At present our understanding of the key molecules that regulate neural stem cell behaviour during these processes remains limited. In this proposal we will investigate the molecular determinants underpinning neural stem cell biology, both within the developing brain, and within glioma.
The amygdala is a region of the brain involved in assinging emotional salience to our sensory world. Disorders of amygdala function lead to a range of anxiety related disorders. In this grant we aim to understand the neural circuits that are invovled in one form of learning that engages the amygdala - fear conditioning.
Neuronal communication relies on the process of exocytosis by which neurons release a neurotransmitter. Exocytosis is critical for the simplest muscle movement to complex tasks such as learning and memory, and is altered in several neurodegenerative pathologies. We will investigate how the protein Munc18 controls exocytosis. This research will be important for understanding how neurons communicate in health and disease and will be relevant to other processes such as insulin release in diabetes.
How Does Iron Accumulation Affect Parkinson’s Disease And What Controls It?
Funder
National Health and Medical Research Council
Funding Amount
$545,517.00
Summary
Currently there is no cure for Parkinson's disease, and although we have a number of treatments to manage the disease there is an urgent need for a further understanding of the disease process. This proposal will investigate the critical role that iron plays in the cause of neuronal cell death that results in Parkinson's disease, and will investigate methods for regulating metal levels in the brain.
Learning And Network Plasticity In A Primitive Sensory Cortex
Funder
National Health and Medical Research Council
Funding Amount
$461,557.00
Summary
Our brain is a uniquely powerful supercomputer, in part because it is ‘plastic’ -- that is, it can change itself when we adapt or learn something new. An understanding of the causes of brain plasticity is an essential part of any quest to understand the brain in sickness and in health. This research uses a laser microscope to ‘read the minds’ of mice as they learn about odours. By observing plasticity in action, we will gain deeper insights into normal brain function.
Understanding Axonal Fusion: An Alternative Mechanism To Repair Injured Axons.
Funder
National Health and Medical Research Council
Funding Amount
$648,447.00
Summary
Being able to repair an injured nerve by stitching the two damages sections back together is an incredible challenge in neurosurgery, and a highly desired outcome for the surgeon as well as for the patient suffering a spinal cord or peripheral injury. We have discovered molecules that mediate nerve repair by favouring the reconnection of the two separated fragments. We will study how they function, and if they can be applied to repair injured mammalian neurons.
Lysosomal Dysfunction As An Inhibitor Of Vitamin B12 Utilisation In Neurodegenerative Diseases
Funder
National Health and Medical Research Council
Funding Amount
$554,901.00
Summary
Vitamin B12 is required for red blood cell formation, DNA synthesis and normal neurological function. B12 deficiency contributes to age-related cognitive decline and Alzheimer’s disease. This research will provide important new information regarding the ageing process and the impact that brain changes associated with ageing and Alzheimer's disease have on B12 metabolism. It will provide important information related to the therapeutic potential of B12.