Functional analysis of long noncoding RNAs expressed in the brain. For many years, the mammalian genome has been thought to be mainly junk. Recently, however, it has become evident that most of the genome specifies RNAs that do not encode proteins ('long noncoding' RNAs, lncRNAs), many of which are brain-specific. This project aims to determine the functions of lncRNAs that are expressed in the hippocampus (involved in learning) and the cerebellum (involved in movement coordination) by deleting ....Functional analysis of long noncoding RNAs expressed in the brain. For many years, the mammalian genome has been thought to be mainly junk. Recently, however, it has become evident that most of the genome specifies RNAs that do not encode proteins ('long noncoding' RNAs, lncRNAs), many of which are brain-specific. This project aims to determine the functions of lncRNAs that are expressed in the hippocampus (involved in learning) and the cerebellum (involved in movement coordination) by deleting them in mice, testing for developmental, cognitive and motor effects, and characterising the structures with which they are associated. The results of the project are expected to open new vistas in neuroscience, contributing to understanding the molecular basis of brain function and the 'dark matter' of the genome.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200101272
Funder
Australian Research Council
Funding Amount
$420,885.00
Summary
Glial Plasticity: How experience and aging change brain structure. 50 % of the cells in the brain are called glia. These cells work with neurons to regulate how we think, feel and behave. Most glial cells are added to the brain after birth, however we know very little about how this process works, or how it may be changed by lived-experience. The overarching aim of this study is to better understand how lived-experience impacts the growth of the major types of glial cells in the brain. To do th ....Glial Plasticity: How experience and aging change brain structure. 50 % of the cells in the brain are called glia. These cells work with neurons to regulate how we think, feel and behave. Most glial cells are added to the brain after birth, however we know very little about how this process works, or how it may be changed by lived-experience. The overarching aim of this study is to better understand how lived-experience impacts the growth of the major types of glial cells in the brain. To do this, I will use cutting-edge technologies and identify; 1) the rates of cell growth for the major types of glia, and 2) map how they are integrated into the brain. This will lead to important new information on how lived-experience can shape the growth and structure of the brain.Read moreRead less
Phenotyping doublecortin+ cells to unravel human adult neurogenesis. This project investigates one of the brain’s most remarkable phenomena: adult neurogenesis, the birth of new brain cells in a specialised brain area (the hippocampus) occurring well into adulthood. This process contributes to many species’ capacity to learn, remember and regenerate. However whether this process occurs in humans is heavily debated. Using new neuroscience tools, this project will produce new insights into human a ....Phenotyping doublecortin+ cells to unravel human adult neurogenesis. This project investigates one of the brain’s most remarkable phenomena: adult neurogenesis, the birth of new brain cells in a specialised brain area (the hippocampus) occurring well into adulthood. This process contributes to many species’ capacity to learn, remember and regenerate. However whether this process occurs in humans is heavily debated. Using new neuroscience tools, this project will produce new insights into human adult neurogenesis by deeply examining hippocampal cells that express the newborn cell marker, doublecortin. This will enable clarification of the existence and extent of adult neurogenesis in humans, and provide the foundation to leverage this process for improving learning, memory and brain regeneration in people.Read moreRead less
Electrical properties of human dendrites. This project aims to determine the electrical properties of dendrites in human neurons. Dendrites are the primary site of synaptic input to neurons and their electrical properties play a key role in information processing in the brain. While we know much about the electrical properties of dendrites in other species, primarily rodents, little is known about the electrical properties of human dendrites. This project aims to address this gap in knowledge fo ....Electrical properties of human dendrites. This project aims to determine the electrical properties of dendrites in human neurons. Dendrites are the primary site of synaptic input to neurons and their electrical properties play a key role in information processing in the brain. While we know much about the electrical properties of dendrites in other species, primarily rodents, little is known about the electrical properties of human dendrites. This project aims to address this gap in knowledge for the first time. The results obtained will shed light on the mechanisms the brain uses to process information, and therefore will bring us a step closer to truly understanding ourselves.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE190100269
Funder
Australian Research Council
Funding Amount
$422,232.00
Summary
Mapping the neural circuits which control water and salt intake. This project aims to map the brain circuits controlling fluid and salt intake using innovative genetically encoded techniques, which enable precise targeting and manipulation of select neuronal populations. Expected outcomes of this project include constructing detailed maps of the brain circuits for fluid and salt intake by tracing multiple nodes in the network, characterising neuronal populations, and precisely defining their fun ....Mapping the neural circuits which control water and salt intake. This project aims to map the brain circuits controlling fluid and salt intake using innovative genetically encoded techniques, which enable precise targeting and manipulation of select neuronal populations. Expected outcomes of this project include constructing detailed maps of the brain circuits for fluid and salt intake by tracing multiple nodes in the network, characterising neuronal populations, and precisely defining their functions. This should provide significant benefits including understanding the brain regions controlling fluid and salt intake which are essential for maintaining fluid homeostasis, and providing a framework for investigating the neural circuits underlying other complex behaviours.Read moreRead less
‘Super-human’ colour vision: how does it improve animal visual performance? Colour vision enables animals to find food, attract mates and avoid predators. Many animals, including fish, birds and insects, have ‘super-human’ colour vision systems and process colour using 4 or 5 spectral channels, instead of our 3. Yet we do not know how information is combined across these different channels to achieve colour vision. This project will develop new technology to measure UV vision in a range of anima ....‘Super-human’ colour vision: how does it improve animal visual performance? Colour vision enables animals to find food, attract mates and avoid predators. Many animals, including fish, birds and insects, have ‘super-human’ colour vision systems and process colour using 4 or 5 spectral channels, instead of our 3. Yet we do not know how information is combined across these different channels to achieve colour vision. This project will develop new technology to measure UV vision in a range of animal taxa, and show how animals with 4 or 5 spectral channels integrate or partition visual information to perceive colour. The Fellowship will provide new biological models for the development of next-generation multispectral cameras used in medical, military, security and remote sensing applications.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200100778
Funder
Australian Research Council
Funding Amount
$390,000.00
Summary
Mapping the neural circuits that underlie emotional learning. This project aims to understand the precise neural circuits that mediate the formation of emotional memories. Recent findings have identified a novel complexity in these circuits and the goal of this proposal is to resolve the underlying mechanism that drives emotional memories. In detail, this project will combine state of the art dual- optical stimulation techniques combined with behaviour-dependent tagging of neurons to investigate ....Mapping the neural circuits that underlie emotional learning. This project aims to understand the precise neural circuits that mediate the formation of emotional memories. Recent findings have identified a novel complexity in these circuits and the goal of this proposal is to resolve the underlying mechanism that drives emotional memories. In detail, this project will combine state of the art dual- optical stimulation techniques combined with behaviour-dependent tagging of neurons to investigate the precise brain circuits linked to emotional learning, an approach that also allows knowledge transfer to other research fields. Expected outcomes and benefits of the project is a significant shift in our understanding of the neural mechanisms that underlie emotional learning.Read moreRead less
Novel role of RNA methylation in neuronal homeostasis. This proposal is aimed at understanding the RNA signalling that takes place in neuronal homeostatic response. The crucial role of neuronal homeostasis for normal brain function is evidenced throughout the nervous system; however, the precise underlying mechanisms are still not well understood. The proposed research will utilise high-throughput sequencing approaches coupled with biochemical, molecular and cell biological assays to provide mec ....Novel role of RNA methylation in neuronal homeostasis. This proposal is aimed at understanding the RNA signalling that takes place in neuronal homeostatic response. The crucial role of neuronal homeostasis for normal brain function is evidenced throughout the nervous system; however, the precise underlying mechanisms are still not well understood. The proposed research will utilise high-throughput sequencing approaches coupled with biochemical, molecular and cell biological assays to provide mechanistic insights into the molecular processes that control neuronal homeostatic responses. This will elucidate how neural plasticity and network stability are maintained, a process that is critical for our understanding of sensory processing, learning and memory throughout life.Read moreRead less
Tools for manipulating neuronal activity for behavioural studies. This project aims to develop optogenetic tools neuroscientists can use to better understand brain circuitry and the functional effects of specific neurons on behaviour. Linking the activity of individual neurons in the brain to specific behaviours is a major challenge in neuroscience. Optogenetics achieve this by using light to control the activity of neurons. This has advanced understanding of behaviour and neurocircuitry. This p ....Tools for manipulating neuronal activity for behavioural studies. This project aims to develop optogenetic tools neuroscientists can use to better understand brain circuitry and the functional effects of specific neurons on behaviour. Linking the activity of individual neurons in the brain to specific behaviours is a major challenge in neuroscience. Optogenetics achieve this by using light to control the activity of neurons. This has advanced understanding of behaviour and neurocircuitry. This project is expected to increase understanding of brain function at the cellular and system levels, and advance Australia’s multidisciplinary research capacity in neuroscience, cognitive sciences and nanobiotechnology to ultimately treat neurological disorders.Read moreRead less
Old brain cells perform new tricks to allow life-long learning. In the brain, nerve cells transmit electrical signals more quickly and reliably when they are insulated. The insulating cells undergo small adaptive changes that speed up information transfer during learning, and the faster the electrical signal, the better the learning outcomes. This project aims to understand the signals that direct insulating cells to adapt and support life-long learning. In the longer term, this knowledge may be ....Old brain cells perform new tricks to allow life-long learning. In the brain, nerve cells transmit electrical signals more quickly and reliably when they are insulated. The insulating cells undergo small adaptive changes that speed up information transfer during learning, and the faster the electrical signal, the better the learning outcomes. This project aims to understand the signals that direct insulating cells to adapt and support life-long learning. In the longer term, this knowledge may be used to: develop interventions that improve learning and educational outcomes; counteract age-related memory decline and enable longer work force participation; develop strategies to circumvent the memory loss caused by brain diseases, or improve the design of computer hardware.Read moreRead less