Designing functional biomaterials with superior cellular interactions. This proposal aims to make a new class of biomaterials that direct important cellular functions such as adhesion, proliferation, and differentiation. This will be achieved by developing materials that leverage a previously unexplored mechanism that was recently identified in my lab: the co-engagement of integrin and syndecan-4 cell receptors. We will use these biomaterials to 1) fabricate 3D printed tissue engineering scaffo ....Designing functional biomaterials with superior cellular interactions. This proposal aims to make a new class of biomaterials that direct important cellular functions such as adhesion, proliferation, and differentiation. This will be achieved by developing materials that leverage a previously unexplored mechanism that was recently identified in my lab: the co-engagement of integrin and syndecan-4 cell receptors. We will use these biomaterials to 1) fabricate 3D printed tissue engineering scaffolds with a superior ability to promote the development of new tissue, and 2) create surfaces that will enable us to answer fundamental scientific questions regarding cell adhesion and cell/material interactions.Read moreRead less
Microstructural-Functional Effect of Silver Diammine Fluoride on Apatites. This project aims to develop a fundamental understanding at the nanostructural level of the factors that contribute to the enhanced mineralisation and mechanical properties of dentine and enamel following the treatment with silver diammine fluoride (SDF). A variety of advanced nanomechanical, tomographic and microscopic techniques will be used to characterise sound, carious and SDF treated tissue. The new biomechanical ev ....Microstructural-Functional Effect of Silver Diammine Fluoride on Apatites. This project aims to develop a fundamental understanding at the nanostructural level of the factors that contribute to the enhanced mineralisation and mechanical properties of dentine and enamel following the treatment with silver diammine fluoride (SDF). A variety of advanced nanomechanical, tomographic and microscopic techniques will be used to characterise sound, carious and SDF treated tissue. The new biomechanical evidence on the underlying mechanisms, alternative protocols, delivery systems enable to optimise the treatment. The scientific insights into arresting/repairing damage processes will provide critical data for developing minimal intervention protocols for pediatric and geriatric populations.Read moreRead less
Nanoengineering materials to combat antimicrobial resistance. This project aims to understand how nanoengineered materials can be designed to kill bacteria and fungi without causing antimicrobial resistance. Resistance to antimicrobial drugs already leads to many thousands of deaths annually and costs society billions of dollars. Nanomaterials have unique abilities to attack microbes in multiple ways that could limit resistance. This project will engineer new antimicrobial nanomaterials tailored ....Nanoengineering materials to combat antimicrobial resistance. This project aims to understand how nanoengineered materials can be designed to kill bacteria and fungi without causing antimicrobial resistance. Resistance to antimicrobial drugs already leads to many thousands of deaths annually and costs society billions of dollars. Nanomaterials have unique abilities to attack microbes in multiple ways that could limit resistance. This project will engineer new antimicrobial nanomaterials tailored to selectively kill microbes with reduced likelihood of developing resistance by using synergies between inorganic nanoparticles and antimicrobial peptides. This technology could be used to prevent infections and biofilms on surfaces in a wide range of future applications, such as medical / veterinary devicesRead moreRead less
Encoding Interactions and Printability into Hairy Colloidal Biomaterials. Printing mixtures of live cells and biomaterials (or 'BioInks') to make bespoke engineered tissues has the potential to enable personalised platforms for therapeutic discovery and organ replacement. Using a novel high throughput approach to materials synthesis, BioInk design and process optimisation, this project aims to discover new biomaterials and printing nozzles to help realise this potential. It will produce new insi ....Encoding Interactions and Printability into Hairy Colloidal Biomaterials. Printing mixtures of live cells and biomaterials (or 'BioInks') to make bespoke engineered tissues has the potential to enable personalised platforms for therapeutic discovery and organ replacement. Using a novel high throughput approach to materials synthesis, BioInk design and process optimisation, this project aims to discover new biomaterials and printing nozzles to help realise this potential. It will produce new insights in colloid science, cell-laden biomaterials design, and BioInk processing. Structure-property-function guides for colloid-based BioInks and quality-assured bioprinting as outcomes represent significant benefits for researchers and industries alike engaged in biofabrication, cell therapy and biotherapeutics.Read moreRead less
Modelling human brain development with stem cells and biomaterials. With limited resources to directly study and advance our understanding of human neural development, this
proposal will establish models of 4 key stages. Employing innovative, interdisciplinary approaches, biomaterials will be fabricated to provide structural and chemical support for human stem cells during: (i) neural induction, (ii) specification into neuronal progenitor subpopulations, (iii) neuronal maturation and integration ....Modelling human brain development with stem cells and biomaterials. With limited resources to directly study and advance our understanding of human neural development, this
proposal will establish models of 4 key stages. Employing innovative, interdisciplinary approaches, biomaterials will be fabricated to provide structural and chemical support for human stem cells during: (i) neural induction, (ii) specification into neuronal progenitor subpopulations, (iii) neuronal maturation and integration into complex neural networks as well as, (iv) the organisation of neurons into larger 3-dimensional brain structures, namely folding of the human cortex. Further, biomaterials developed here have commercialisation potential, targeted at standardizing the culturing of human stem cells to defined neural populations.
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Ultra-low fouling active surfaces. This project aims to develop chemistries and fabrication approaches through innovative materials evaluation to develop ultra-low fouling active electrode surfaces. Development of ultra-low fouling surfaces will have significant impact in a range of applications where system or device failure is attributed to fouling. The growing field of bionics, where implantable electronic devices interface directly with the nervous system, is one such device. The expected ou ....Ultra-low fouling active surfaces. This project aims to develop chemistries and fabrication approaches through innovative materials evaluation to develop ultra-low fouling active electrode surfaces. Development of ultra-low fouling surfaces will have significant impact in a range of applications where system or device failure is attributed to fouling. The growing field of bionics, where implantable electronic devices interface directly with the nervous system, is one such device. The expected outcomes will be an understanding of the material requirements that lead to the elimination of protein and cell accumulation at surfaces that degrades the performance and lifetime of these implants. The findings will benefit any application where fouling is a problem.Read moreRead less
Photoreversible hydrogels to study stem cell memory and fate. This project will develop materials whose stiffness can be reversibly increased and decreased by the simple application of light, and use these to build knowledge of how stem cell fate is regulated. The influence of mechanical cues on the structure and organisation of the nucleus will be determined. Expected outcomes are new synthetic and light-reversible culture materials, and fundamental insights into how forces change the nucleus t ....Photoreversible hydrogels to study stem cell memory and fate. This project will develop materials whose stiffness can be reversibly increased and decreased by the simple application of light, and use these to build knowledge of how stem cell fate is regulated. The influence of mechanical cues on the structure and organisation of the nucleus will be determined. Expected outcomes are new synthetic and light-reversible culture materials, and fundamental insights into how forces change the nucleus to alter stem cell aging and fate. The findings will provide critical information required for the future development of assays to measure cell potency and instructive biomaterials to drive stem cell expansion and tissue-regeneration and will have impact by underpinning future advances in stem cell technologies.Read moreRead less
Miniaturised biosensors with high selectivity . This project aims to develop a technological platform for the fabrication of miniaturised and flexible sensors that enable the quantitative detection of important bioactive compounds such as fatty acids and biogenic amines. By utilising multi-enzymatic reactions in solid phase and engineering task-specific inks, chemiresistive sensors will be printed seamlessly as a whole. The sensors will respond to complex target biomolecules via a series of enzy ....Miniaturised biosensors with high selectivity . This project aims to develop a technological platform for the fabrication of miniaturised and flexible sensors that enable the quantitative detection of important bioactive compounds such as fatty acids and biogenic amines. By utilising multi-enzymatic reactions in solid phase and engineering task-specific inks, chemiresistive sensors will be printed seamlessly as a whole. The sensors will respond to complex target biomolecules via a series of enzymatic reactions through which the analyte will convert to much simpler, reactive and hence measurable molecules. This project will enable to design miniaturised sensors for point-of-care detection of biomolecules that cannot be yet evaluated by the end users.Read moreRead less
Micro-electrofluidic platforms for monitoring 3D human biological models. The ability to study living cells and human biological models (cell cultures) delivers greater understanding of basic biological function and response to applied (bio)chemical stimuli. Creating the physical environments to sustain biological models, and mimic natural conditions and fluidic pathways, is immensely challenging, yet essential to deliver meaningful observational data. This project will deliver this capability t ....Micro-electrofluidic platforms for monitoring 3D human biological models. The ability to study living cells and human biological models (cell cultures) delivers greater understanding of basic biological function and response to applied (bio)chemical stimuli. Creating the physical environments to sustain biological models, and mimic natural conditions and fluidic pathways, is immensely challenging, yet essential to deliver meaningful observational data. This project will deliver this capability through the convergence of expertise and innovation in analytical chemistry, materials science and cellular biology, ultilising the latest technology and understanding of 3D micro/electrofluidics, to enable the study and stimulation of advanced biological models, sustained within precisely controlled 3D micro-environments.Read moreRead less
Nanoengineering of Biomaterial Surfaces to Tailor Innate Immune Responses. The overarching aim of this project is to provide a mechanistic understanding of how surface nanotopography affects inflammatory responses. Recently, we showed that surface nanotopography induced conformational changes in adsorbed proteins can activate or deactivate immune cells. These exciting findings are important because they show that it may be possible to engineer the nanotopography of a biomedical device surface in ....Nanoengineering of Biomaterial Surfaces to Tailor Innate Immune Responses. The overarching aim of this project is to provide a mechanistic understanding of how surface nanotopography affects inflammatory responses. Recently, we showed that surface nanotopography induced conformational changes in adsorbed proteins can activate or deactivate immune cells. These exciting findings are important because they show that it may be possible to engineer the nanotopography of a biomedical device surface in a manner which leads to a desired and predictable level of inflammation. The outcomes of the project will create new fundamental knowledge that in the future can instruct the development of the next generation of biomaterials capable of controlling and directing the body’s inflammatory responses.Read moreRead less