The Development Of Novel, Biofilm-resistant Biomaterials
Funder
National Health and Medical Research Council
Funding Amount
$147,360.00
Summary
Almost all patients who are catheterised long term develop a bacterial infection. Most often, the infection is the result of colonisation of the catheter surface by bacteria. Bacterial colonisation of the surface of biomedical devices represents a significant health threat as such bacterial biofilms are extremely resistant to traditional antibiotic regimens. This project aims to develop novel materials that prevent bacterial colonisation on catheters and other biomedical related devices. Our tec ....Almost all patients who are catheterised long term develop a bacterial infection. Most often, the infection is the result of colonisation of the catheter surface by bacteria. Bacterial colonisation of the surface of biomedical devices represents a significant health threat as such bacterial biofilms are extremely resistant to traditional antibiotic regimens. This project aims to develop novel materials that prevent bacterial colonisation on catheters and other biomedical related devices. Our technology is based on compounds identified from a marine alga that prevent bacterial colonisation of its surface. Similarly, we have shown that these compounds, when coated onto test surfaces, prevent bacterial colonisation of a range of materials.Read moreRead less
Recombinant Bacteria Expressing Oligosaccharide Receptor Mimics For Prevention Of Enteric Infections
Funder
National Health and Medical Research Council
Funding Amount
$451,056.00
Summary
Gastrointestinal infectious diseases kill more than 3 million people each year. The principal microbial pathogens responsible for these infections are known to exploit oligosaccharides on the surface of host cells as receptors for ahesins or toxins. We have developed (and patented) a novel anti-infective strategy, based on mimicry of oligosaccharide receptors for toxins and adhesins produced by enteric pathogens on the surface of harmless carrier bacteria. Oral administration of such recombinant ....Gastrointestinal infectious diseases kill more than 3 million people each year. The principal microbial pathogens responsible for these infections are known to exploit oligosaccharides on the surface of host cells as receptors for ahesins or toxins. We have developed (and patented) a novel anti-infective strategy, based on mimicry of oligosaccharide receptors for toxins and adhesins produced by enteric pathogens on the surface of harmless carrier bacteria. Oral administration of such recombinant probiotics has the potential to prevent enteric infections by binding and neutralizing toxins in the gut lumen and by blocking adherence of the pathogen to intestinal epithelial cells. As a prototypic example, we have developed a bacterium capable of preventing the serious consequences of Shiga toxigenic Escherichia coli (STEC) infections; this agent binds Shiga toxin with very high efficiency and is 100% protective in animal models. The strategy has very broad applications, however, and receptors for virtually any pathogen can be mimicked by expression of appropriate glycosyl transferases in a suitable harmless host bacterium. This proposal involves extension of our existing work to develop therapeutic agents for other important life threatening diarrhoeal diseases including cholera, travellers' diarrhoea, dysentery, antibiotic-associated colitis, rotavirus, etc.Read moreRead less
Construction And Immunogenic Evaluation Of Recombinant HBsAg-S Virus-like Particles Containing B And T Cell Epitopes Of
Funder
National Health and Medical Research Council
Funding Amount
$170,000.00
Summary
Helicobacter pylori is a significant human pathogen impacting on the health and well being of not only thousands of Australians, but also millions of people world-wide. However, the task of developing a vaccine against H. pylori remains important. Vaccination is the most effective mechanism to prevent disease associated with this infection, particularly gastric cancer, one of the most common causes of cancer death world-wide. However, current attempts to develop an effective vaccine for humans h ....Helicobacter pylori is a significant human pathogen impacting on the health and well being of not only thousands of Australians, but also millions of people world-wide. However, the task of developing a vaccine against H. pylori remains important. Vaccination is the most effective mechanism to prevent disease associated with this infection, particularly gastric cancer, one of the most common causes of cancer death world-wide. However, current attempts to develop an effective vaccine for humans has been limited by the non-availability of an effective and safe adjuvant. The aim is to construct a recombinant Virus-Like Particle which can be used as a safe and effective vaccine against Helicobacter pylori infections. We specifically aim to: · determine the most efficacious singular or combinatorial route-s of delivery of Virus-Like Particles (VLPs) which will induce the desired Th2 and B cell responses in mice · define the Th2 and B cell epitopes of H.pylori Kat A carboxyl terminus that can be used to construct chimeric HBsAg-S-Kat A VLPs · determine if the induction of desired immunological responses in mice are protective against wild type challengeRead moreRead less
Development Of An In Vitro Immunodiagnostic Test For Serum IgE Specific To The Major Pollen Allergen, Pas N 1, Of The Subtropical Bahia Grass
Funder
National Health and Medical Research Council
Funding Amount
$349,435.00
Summary
Treatment of grass pollen allergy by immunotherapy reduces the risk of asthma but most reagents for diagnosis and treatment are based on cool climate grasses. We will develop a more specific diagnostic blood test for people with hay fever and allergic asthma triggered by subtropical Bahia grass pollen. This test based on the major allergen of Bahia grass pollen, Pas n 1, will help people who need improved accuracy of diagnosis and more effective treatment outcomes for hay fever and allergic asth ....Treatment of grass pollen allergy by immunotherapy reduces the risk of asthma but most reagents for diagnosis and treatment are based on cool climate grasses. We will develop a more specific diagnostic blood test for people with hay fever and allergic asthma triggered by subtropical Bahia grass pollen. This test based on the major allergen of Bahia grass pollen, Pas n 1, will help people who need improved accuracy of diagnosis and more effective treatment outcomes for hay fever and allergic asthma.Read moreRead less