Structures and properties of tissue engineering matrices for cartilage and bone: Imaging, visualising and modelling tissue/scaffold constructs in 3D. Tissue engineering of bone and cartilage has the potential to lower costs and improve outcomes. The first stage requires the design of porous 3D scaffolds. To date they have been found less than ideal for clinical applications. Our ability to design and optimise scaffolds has been ad hoc, as local structure and properties have not been measurable ....Structures and properties of tissue engineering matrices for cartilage and bone: Imaging, visualising and modelling tissue/scaffold constructs in 3D. Tissue engineering of bone and cartilage has the potential to lower costs and improve outcomes. The first stage requires the design of porous 3D scaffolds. To date they have been found less than ideal for clinical applications. Our ability to design and optimise scaffolds has been ad hoc, as local structure and properties have not been measurable during tissue growth and repair. In this proposal, an interdisciplinary group from three universities will utilise microCT imaging, visualisation and numerical modelling to determine these structures and properties. This will provide an invaluable understanding for the further development of tissue engineering scaffolds.Read moreRead less
Design and characterisation of a polysaccharide-based biomaterial for tissue adhesion. This proposal aims to design a new bio-adhesive material and study the mechanisms of action for tissue adhesion. Current suture technology is inadequate for anything but simple repairs and the alternative offered by surgical glues available today is at most augmentation of suturing. Combination of a strong adhesive biomaterial with factors for accelerating wound healing will generate a novel material technolo ....Design and characterisation of a polysaccharide-based biomaterial for tissue adhesion. This proposal aims to design a new bio-adhesive material and study the mechanisms of action for tissue adhesion. Current suture technology is inadequate for anything but simple repairs and the alternative offered by surgical glues available today is at most augmentation of suturing. Combination of a strong adhesive biomaterial with factors for accelerating wound healing will generate a novel material technology that, by uniting wound closure with sealing, addresses an unmet need in surgery.
The primary outcomes of these investigations will be:
1. advancement of knowledge in theories of tissue-biomaterial adhesion mechanisms
2. knowledge of effects of visible light from laser diodes on cells and isolated tissue
3. a biocompatible, visible light activated adhesive film for tissue repair based on chitosan polysaccharides
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Topography Optimisation of Implants for Enhancing Osseointegration. With recent increased life expectancy, the ratio of implant recipients to total population has dramatically increased. The project will address a critical issue in ensuring long-term success of prosthetic treatment. The proposed computational multiscale modelling will provide a sound scientific alternative means to optimisation of overall implant design including surface topography. The anticipated outcomes of this research will ....Topography Optimisation of Implants for Enhancing Osseointegration. With recent increased life expectancy, the ratio of implant recipients to total population has dramatically increased. The project will address a critical issue in ensuring long-term success of prosthetic treatment. The proposed computational multiscale modelling will provide a sound scientific alternative means to optimisation of overall implant design including surface topography. The anticipated outcomes of this research will help improve the quality of prosthetic therapy, and benefit our prosthodontic and orthopaedic professionals and their patients. The study clearly aligns with the national research goals of frontier technologies and maintaining good health.Read moreRead less
Biomimetic Insights from Enamel: A Nano-mechanical and Nano-structural Investigation of a Natural Ceramic-like Biocomposite. Enamel is a naturally developed example of an optimised material structure that constitutes the hardest tissue in the human body. In addition it is exposed to severe mechanical and environmental challenges and must last the lifetime of the individual and unlike other tissue is unable to heal or repair itself. Understanding the factors controlling the amazing mechanical pr ....Biomimetic Insights from Enamel: A Nano-mechanical and Nano-structural Investigation of a Natural Ceramic-like Biocomposite. Enamel is a naturally developed example of an optimised material structure that constitutes the hardest tissue in the human body. In addition it is exposed to severe mechanical and environmental challenges and must last the lifetime of the individual and unlike other tissue is unable to heal or repair itself. Understanding the factors controlling the amazing mechanical properties of this tissue will be of great benefit for the design of bio-inspired materials and be important for the development of advanced materials for which Australia already has an enviable reputation.Read moreRead less
Core-shell nanoparticle from polymers with pendant cyclodextrins. A better drug delivery system will be developed for the treatment of cancer with albendazole. These nanoparticles enhance the circulation time in the body, but also facilitate the delivery of the drug to the site of the tumour, which will increase the efficacy of the treatment. The nanoparticles are obtained by processing polymers with pendant cyclodextrin groups, which are a type of complex sugars. Aim of this work is the explora ....Core-shell nanoparticle from polymers with pendant cyclodextrins. A better drug delivery system will be developed for the treatment of cancer with albendazole. These nanoparticles enhance the circulation time in the body, but also facilitate the delivery of the drug to the site of the tumour, which will increase the efficacy of the treatment. The nanoparticles are obtained by processing polymers with pendant cyclodextrin groups, which are a type of complex sugars. Aim of this work is the exploration of synthetic routes to generate nanoparticles. Tailoring the underpinning polymer structure of these nanoparticles will allow the optimisation of the release of albendazole from the drug carrier, thus improving cancer treatment.Read moreRead less
Silk Fibroin Optofluidic Chips. Unlike any other material, even any other biologically occurring material, silk is unique in being very transparent, able to be shaped on a very small scale and can keep natural chemicals like proteins and enzymes active. This project will use silk to make optical devices and sensors. Optics made from silk will have all these properties, which means that they can be used as sensors and devices in biochemistry applications that have never been possible before. Thes ....Silk Fibroin Optofluidic Chips. Unlike any other material, even any other biologically occurring material, silk is unique in being very transparent, able to be shaped on a very small scale and can keep natural chemicals like proteins and enzymes active. This project will use silk to make optical devices and sensors. Optics made from silk will have all these properties, which means that they can be used as sensors and devices in biochemistry applications that have never been possible before. These cost-effective devices will have the potential to enhance healthcare, emergency medicine and assist early medical diagnosis.Read moreRead less
Controlling the adhesome to regulate cell fate on biomaterials. Mesenchymal stem cell-based tissue engineering practices are hampered worldwide by the lack of appreciation and understanding of the matrix-mediated cues that must be provided during adhesion and spreading to drive cells to definitive tissue end points. This project will address these knowledge deficiencies by combining high throughput array technologies, a set of tailorable self-assembling biomaterials and real-time biosensors to r ....Controlling the adhesome to regulate cell fate on biomaterials. Mesenchymal stem cell-based tissue engineering practices are hampered worldwide by the lack of appreciation and understanding of the matrix-mediated cues that must be provided during adhesion and spreading to drive cells to definitive tissue end points. This project will address these knowledge deficiencies by combining high throughput array technologies, a set of tailorable self-assembling biomaterials and real-time biosensors to rapidly, at high resolution, elucidate how mechanotransductive cues determine the fate choice of mesenchymal stem cells, and furthermore, how to manipulate them with smart biomaterial design to achieve desired outcomes for tissue engineering. Read moreRead less
Synthesis of stimuli-responsive star polymers for controlled drug delivery. The project aims to prepare novel star polymers suitable for drug delivery via controlled radical polymerization techniques. Such star polymers can be employed to release drugs within the human body in a controlled manner over time and are thus able to target specific sites, i.e. a tumor. The release characterisitics are be influenced by the structure and the size of the star polymer, which can easily be altered via cont ....Synthesis of stimuli-responsive star polymers for controlled drug delivery. The project aims to prepare novel star polymers suitable for drug delivery via controlled radical polymerization techniques. Such star polymers can be employed to release drugs within the human body in a controlled manner over time and are thus able to target specific sites, i.e. a tumor. The release characterisitics are be influenced by the structure and the size of the star polymer, which can easily be altered via controlled radical polymerization techniques. These novel stars are expected to improve the release kinetics of the drug comparing to similar structured micelles due to their higher stability upon injection.Read moreRead less
Biomimetic hydrogels. Hydrogels are promising materials to repair and regenerate damaged tissues, but their weak mechanical properties limit their applications. This project aims to develop hydrogels with better mechanical properties by mimicking the way natural tissues, such as cartilage, work. Specifically, we aim to develop a new class of hydrogels by adding molecular polymer brushes to traditional materials. We will design the hydrogels with long-term stability and render them suitable as vi ....Biomimetic hydrogels. Hydrogels are promising materials to repair and regenerate damaged tissues, but their weak mechanical properties limit their applications. This project aims to develop hydrogels with better mechanical properties by mimicking the way natural tissues, such as cartilage, work. Specifically, we aim to develop a new class of hydrogels by adding molecular polymer brushes to traditional materials. We will design the hydrogels with long-term stability and render them suitable as viable hosts for chondrocytes. Through this project, we will grow fundamental knowledge in polymer chemistry and tissue engineering, and pave the way for new technologies to repair damaged joints and tissues.Read moreRead less
Functionalised nanostructured polythiophenes: novel platforms for bionics. The nanostructured organic polymer materials targeted for production in this project will bring unique capabilities to the field of muscle regeneration. A multi-modal stimulation platform is expected to bring significant improvements in muscle cell growth. This will have profound effects on the quality of life for those suffering from neuromuscular disorders or other traumas that require muscle regeneration. This project ....Functionalised nanostructured polythiophenes: novel platforms for bionics. The nanostructured organic polymer materials targeted for production in this project will bring unique capabilities to the field of muscle regeneration. A multi-modal stimulation platform is expected to bring significant improvements in muscle cell growth. This will have profound effects on the quality of life for those suffering from neuromuscular disorders or other traumas that require muscle regeneration. This project will demonstrate the capabilities of these nanostructures in-vitro.Read moreRead less