Understanding platinum dissolution in biomedical stimulating electrodes. Platinum is the main material used in electrodes for neurostimulators like the cochlear implant. Platinum electrodes can experience dissolution during implantation, which can impact on their function. The mechanisms governing this dissolution process are complex and still not fully understood. This research aims to understand the chemical, electrical and biological factors that impact on platinum dissolution in electrodes. ....Understanding platinum dissolution in biomedical stimulating electrodes. Platinum is the main material used in electrodes for neurostimulators like the cochlear implant. Platinum electrodes can experience dissolution during implantation, which can impact on their function. The mechanisms governing this dissolution process are complex and still not fully understood. This research aims to understand the chemical, electrical and biological factors that impact on platinum dissolution in electrodes. It will also develop new 3D models to simulate conditions in the human body for more rapid testing of electrodes. The new knowledge generated will improve the accuracy of predictions of platinum dissolution, develop new approaches for minimising dissolution, and contribute to reducing need for animal experimentation.Read moreRead less
Tuning Molecular Translocaton by Close-Field Electroporation. This project aims to determine the underlying mechanisms by which DNA and other molecules are able to migrate across the cell membrane in response to highly localised electric fields. It has recently been shown that focusing of electric fields at the cellular level, using an array of small electrodes, results in unexpectedly high cell transfection efficiencies. It has been termed 'close-field electroporation'. Here it is proposed t ....Tuning Molecular Translocaton by Close-Field Electroporation. This project aims to determine the underlying mechanisms by which DNA and other molecules are able to migrate across the cell membrane in response to highly localised electric fields. It has recently been shown that focusing of electric fields at the cellular level, using an array of small electrodes, results in unexpectedly high cell transfection efficiencies. It has been termed 'close-field electroporation'. Here it is proposed to establish the properties of the electric fields around cells and cell membrane interactions with these fields that enable molecular translocation. This fundamental science could have broad implications in the domains of drug delivery, gene therapy and neural stimulation.Read moreRead less
A thermodynamic pathway to intracellular delivery. Cells transmit information through molecules. By delivering foreign molecules into cells, such as DNA and proteins, it is possible to engineer and reprogram cells just like a computer. This proposal aims to develop a novel microfluidic device for intracellular delivery. The device will work by exposing cells to rapid thermal shock to generate transient disruptions in cell membranes and thereby enable influx of foreign molecules into cells. To un ....A thermodynamic pathway to intracellular delivery. Cells transmit information through molecules. By delivering foreign molecules into cells, such as DNA and proteins, it is possible to engineer and reprogram cells just like a computer. This proposal aims to develop a novel microfluidic device for intracellular delivery. The device will work by exposing cells to rapid thermal shock to generate transient disruptions in cell membranes and thereby enable influx of foreign molecules into cells. To understand how the method can be optimized, the thermodynamic pathway of membrane disruption will be investigated at a single cell level. The methods and insights arising from this project could eventually lead to novel, patentable and lower-cost health technologies.Read moreRead less
Electric field effects on cochlear tissues. The project aims to solve the underlying biology of how electricity flows through the cochlear tissues, where and how electrical stimulation excites the auditory neurons, and what the effects of sustained electrical stimulation are on the nerve fibre growth and function. The research aims to show how electric fields can be controlled in the cochlea, and how auditory nerve fibres are affected at the cellular and molecular level. The long-term aim is to ....Electric field effects on cochlear tissues. The project aims to solve the underlying biology of how electricity flows through the cochlear tissues, where and how electrical stimulation excites the auditory neurons, and what the effects of sustained electrical stimulation are on the nerve fibre growth and function. The research aims to show how electric fields can be controlled in the cochlea, and how auditory nerve fibres are affected at the cellular and molecular level. The long-term aim is to utilise these findings to improve the control of neuronal excitability, for development of interfaces with the nervous system.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE190100609
Funder
Australian Research Council
Funding Amount
$368,000.00
Summary
Mechanobiology: a new model of integrin activation by membrane tension. This project aims to address a fundamental question in mechanobiology on how integrin receptor coordinates with force to mediate cell spreading, migration, growth and survival. With an observation that membrane deformation enhances integrin binding, the project expects to establish a new model of integrin activation by membrane tension. It will develop an integrated approach combining single-molecule force probes, super reso ....Mechanobiology: a new model of integrin activation by membrane tension. This project aims to address a fundamental question in mechanobiology on how integrin receptor coordinates with force to mediate cell spreading, migration, growth and survival. With an observation that membrane deformation enhances integrin binding, the project expects to establish a new model of integrin activation by membrane tension. It will develop an integrated approach combining single-molecule force probes, super resolution microscopy, microfluidics and molecular dynamics simulations. It is expected that the role of membrane tension in promoting cell adhesion will be defined at molecular scale, and the link between integrin activation and Piezo calcium channel mediated membrane tension sensing will be delineated.Read moreRead less
The colour of cellular aging: a deep probe of cellular processes. Understanding why we age and whether aging is preventable are profound research challenges, which must be first tackled at a cellular level. Building on our advances in non-invasive colour monitoring of cell function, this project aims to uncover intimate links between cellular processes and aging in cells that must survive for many decades such as oocytes and neurons. We will explore the tantalising possibility to rejuvenate such ....The colour of cellular aging: a deep probe of cellular processes. Understanding why we age and whether aging is preventable are profound research challenges, which must be first tackled at a cellular level. Building on our advances in non-invasive colour monitoring of cell function, this project aims to uncover intimate links between cellular processes and aging in cells that must survive for many decades such as oocytes and neurons. We will explore the tantalising possibility to rejuvenate such aged cells by interfering with molecular master switches of aging. A unique machine learning approach will be applied for finding the most effective interventions. The results will have broad impact beyond the science of aging, in the areas of female fertility, neurodegeneration and immunity.
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Rejuvenating adult stem cells. This project aims to uncover intimate links between metabolic regulation and longevity in adult stem cells, the source of all cells in the body. Understanding why we age and whether ageing is preventable are research challenges which must be first attacked at a cellular level. This project will try to rejuvenate aged stem cells by interfering with a prospective molecular master switch of aging and also develop an approach to identify and select youthful stem cells. ....Rejuvenating adult stem cells. This project aims to uncover intimate links between metabolic regulation and longevity in adult stem cells, the source of all cells in the body. Understanding why we age and whether ageing is preventable are research challenges which must be first attacked at a cellular level. This project will try to rejuvenate aged stem cells by interfering with a prospective molecular master switch of aging and also develop an approach to identify and select youthful stem cells. The results are expected to be important beyond informing the science of ageing, in the areas of tissue engineering, wound healing, embryology and cancer.Read moreRead less
Novel biomimetic vascular biomaterials using extracellular matrix molecules. There is currently a pressing, unmet need for biodegradable, functional biomaterials that support endothelial cell interactions and vascular regeneration. Lack of sufficient vascular regeneration is the biggest obstacle in translating advances in biomaterials development to clinical, diagnostic and research applications. This project aims to address this need by developing novel biomaterial platforms that mimic the extr ....Novel biomimetic vascular biomaterials using extracellular matrix molecules. There is currently a pressing, unmet need for biodegradable, functional biomaterials that support endothelial cell interactions and vascular regeneration. Lack of sufficient vascular regeneration is the biggest obstacle in translating advances in biomaterials development to clinical, diagnostic and research applications. This project aims to address this need by developing novel biomaterial platforms that mimic the extracellular matrix of the vascular niche. We plan to utilise unique extracellular matrix domains and bioprinting techniques to control and guide endothelial cell functions. We could thus contribute to the knowledge base in vascular biology and bioengineering, forming the basis for vascular materials of the future.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE210100001
Funder
Australian Research Council
Funding Amount
$875,000.00
Summary
A 3-photon imaging system for deep live imaging. This project aims to establish Australia’s first 3-photon microscope system with adaptive optics for deep intravital imaging. This advanced imaging system will enable researchers to investigate the biology of cells and tissue structures in a wide range of organs and engineered tissues, to a degree not possible with existing technology. This project will capitalise on advanced laser, microscope and adaptive optics technologies with the expected out ....A 3-photon imaging system for deep live imaging. This project aims to establish Australia’s first 3-photon microscope system with adaptive optics for deep intravital imaging. This advanced imaging system will enable researchers to investigate the biology of cells and tissue structures in a wide range of organs and engineered tissues, to a degree not possible with existing technology. This project will capitalise on advanced laser, microscope and adaptive optics technologies with the expected outcomes to include the generation of new knowledge of major biological systems, including the immune system and the nervous system. This will provide significant benefits to fundamental interdisciplinary research into immunology, infectious disease, neuroscience, mechanobiology and engineering.Read moreRead less
Synthetic leukocytes: bio-inspired DNA nanorobots powered by flow. Inspired by the way white blood cells roll along blood vessel walls, our goal is to build DNA nanorobots that roll along surfaces in flow. We take a synthetic biology approach to using biomolecules, such as DNA and proteins, to build functional particles and surfaces. To achieve this, we will combine our teams’ technological advances in DNA nanotechnology, plasma-activation for biomolecule immobilisation, and microfluidic devices ....Synthetic leukocytes: bio-inspired DNA nanorobots powered by flow. Inspired by the way white blood cells roll along blood vessel walls, our goal is to build DNA nanorobots that roll along surfaces in flow. We take a synthetic biology approach to using biomolecules, such as DNA and proteins, to build functional particles and surfaces. To achieve this, we will combine our teams’ technological advances in DNA nanotechnology, plasma-activation for biomolecule immobilisation, and microfluidic devices. This project will contribute new methods for synthetic particle motion in flow and provide new insights into biomolecule interactions and motion. Ultimately, this will allow us to harness rolling for the delivery of synthetic nanorobots for detection and remediation in flow systems, such as the body.Read moreRead less