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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
Commercialisation Of A Glycoprofiling Diagnostic Kit And Novel Therapies For Biofilm Related Respiratory Disorders
Funder
National Health and Medical Research Council
Funding Amount
$203,050.00
Summary
Our preliminary studies have shown that a group of patients who suffer from chronic inflammatory disease and have bacterial biofilm identified on their mucosa have worse outcomes even after surgery. We have shown that they lack certain small protein and sugar molecules on their respiratory lining. We aim to use this technology as a diagnostic tool to aid the doctor in prescribing the appropriate treatment for these patients to prevent bacteria regrowing in their respiratory tract.