Characterisation Of Erusiolin - A New Peptide Hormone
Funder
National Health and Medical Research Council
Funding Amount
$547,202.00
Summary
Obesity and type II diabetes are epidemic diseases in Australia. Gut-derived hormones are key mediators in these diseases, due to their role in regulating appetite and blood glucose levels. Therapeutic modulation of these hormones also provides significant benefits for patients. In this proposal, we will determine the metabolic functions, such as appetite control, for a previously uncharacterised hormone, which is an unexplored therapeutic target for obesity and diabetes.
Bitter Taste As A Mediator Of Food Intake And Postprandial Glycaemia In Health And Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$735,430.00
Summary
The gut “tastes” contents passing through it in a similar manner to the tongue. Recent evidence suggests that bitter substances in the gut can reduce appetite and slow the emptying of meals from the stomach, by stimulating gastrointestinal hormone release. We propose studies to understand how this system functions in health and type 2 diabetes, and whether it can be targeted to provide new diabetes treatments
How Does Inflammation Of The Gut Change Its Sensory Innervation?
Funder
National Health and Medical Research Council
Funding Amount
$613,767.00
Summary
A large number of patients that are referred to gastroenterologists for pain and discomfort from the bowel are offered no effective treatment. This has a large impact on quality of life and often involves invasive tests to rule out inflammatory or cancerous causes. These patients are classified as suffering from irritable bowel syndrome (IBS). Patients who have diagnosable inflammatory bowel disease (IBD) where colonoscopy is positive may suffer similar symptoms but also have no treatment for th ....A large number of patients that are referred to gastroenterologists for pain and discomfort from the bowel are offered no effective treatment. This has a large impact on quality of life and often involves invasive tests to rule out inflammatory or cancerous causes. These patients are classified as suffering from irritable bowel syndrome (IBS). Patients who have diagnosable inflammatory bowel disease (IBD) where colonoscopy is positive may suffer similar symptoms but also have no treatment for this type of symptom. It is becoming apparent that a large subgroup of IBS patients have undergone prior infection or inflammation, and that there are in fact changes in the types of cells in biopsies from their gut. Thus there are common features to IBS and inflammation. These may provide a means for us to find new treatments for IBS and IBD symptoms. Mice develop similar microscopic changes in the colon after experimental inflammation to those seen in humans, so we can discover more from this model. We have recently established that there are several types of sensory nerve fibres from the mouse colon and rectum that convey information about contractions, distension and chemical mediators released from tissue to the central nervous system. These are almost certainly responsible for generating symptoms in patients. We aim in this project to discover how these sensory nerves change in their responsiveness to mechanical and chemical stimuli in experimental inflammation. Importantly we shall investigate the mediators that are present in the tissue which may activate sensory nerves and-or the receptors on sensory nerves that may be increased. These experiments we hope will provide a target at which to aim novel drug treatments for symptoms of IBS and IBD.Read moreRead less
Improved methods for quantitation of acute phase proteins in biological samples. Using monoclonal antibodies and fluorescence polarisation, we aim to develop improved quantitative analytical methods that are superior to the current clinical assays. The initial targets will be C-reactive protein (CRP) and serum amyloid precursor protein (SAP), but the technology should be readily adaptable to other serum proteins. Better assays for CRP and SAP will greatly facilitate improved clinical management ....Improved methods for quantitation of acute phase proteins in biological samples. Using monoclonal antibodies and fluorescence polarisation, we aim to develop improved quantitative analytical methods that are superior to the current clinical assays. The initial targets will be C-reactive protein (CRP) and serum amyloid precursor protein (SAP), but the technology should be readily adaptable to other serum proteins. Better assays for CRP and SAP will greatly facilitate improved clinical management of those at risk of heart attack, the single biggest contributor to healthcare costs in Australia. We further aim to adapt this technology to enable "point-of-care" assays that would help medical practitioners, especially in rural areas, to make informed diagnoses immediately.Read moreRead less
Molecular mechanisms for seminal fluid signalling in reproduction. Male seminal fluid regulation of the female reproductive process influences fertility and fecundity in humans and animal species. Infertility and impaired reproductive function is a major economic constraint in livestock industries, and carries a substantial social and public health cost in humans. This research will identify the active signalling molecules in seminal fluid and quantify their importance in reproductive success ....Molecular mechanisms for seminal fluid signalling in reproduction. Male seminal fluid regulation of the female reproductive process influences fertility and fecundity in humans and animal species. Infertility and impaired reproductive function is a major economic constraint in livestock industries, and carries a substantial social and public health cost in humans. This research will identify the active signalling molecules in seminal fluid and quantify their importance in reproductive success and health of offspring. The outcomes will inform development of new diagnostic assays for male fertility, and underpin strategic design of novel fertility treatments and products with applications in the human health and animal breeding industries. Read moreRead less
Discovery and directed evolution of small molecule biosensors. This project aims to address the need for novel small molecule biosensing capability in diverse fields including food and wine production, environmental monitoring, biocatalysis, and diagnostics using a synthetic biology approach. The significance of this work is the development of new biosensors by a strong interdisciplinary team contributing bioinformatics to identify new biosensors, innovative protein engineering approaches, and c ....Discovery and directed evolution of small molecule biosensors. This project aims to address the need for novel small molecule biosensing capability in diverse fields including food and wine production, environmental monitoring, biocatalysis, and diagnostics using a synthetic biology approach. The significance of this work is the development of new biosensors by a strong interdisciplinary team contributing bioinformatics to identify new biosensors, innovative protein engineering approaches, and cutting-edge directed evolution methodologies. Intended outcomes include enhanced institutional capacity for interdisciplinary collaboration; discovery of fundamentally important bacterial sensors; and development of synthetic regulatory circuits enabling outgrowth of non-biological biocatalysis industries.Read moreRead less
Site-specific protein functionalisation at diselenides via photocatalysis . This project aims to develop a new photocatalytic reaction for the on demand functionalisation of proteins. The synthetic methodology will solve a major technological gap in the field by enabling efficient access to proteins with defined modifications at specific locations. Functionalised proteins generated in the project will underpin a detailed understanding of how specific modifications influence the structure and fun ....Site-specific protein functionalisation at diselenides via photocatalysis . This project aims to develop a new photocatalytic reaction for the on demand functionalisation of proteins. The synthetic methodology will solve a major technological gap in the field by enabling efficient access to proteins with defined modifications at specific locations. Functionalised proteins generated in the project will underpin a detailed understanding of how specific modifications influence the structure and function of several important proteins. The project will generate significant new knowledge in the fields of chemistry and biology and will foster interdisciplinary collaboration, nationally and internationally. The breakthrough technology also has the potential to benefit Australia’s biotechnology sector.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150101863
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Strained alkenes as chemical probes for cysteine sulfenic acid. This project aims to introduce strained alkenes as probes for cysteine sulfenic acid, a poorly understood biomarker for oxidative stress. This probe will enable rapid detection of cysteine sulfenic acid and meet an urgent need for tools to map cysteine redox signalling. Moreover, since many enzymes feature a cysteine sulfenic acid at their active site, the strained alkene probes will also serve as useful inhibitor probes of these en ....Strained alkenes as chemical probes for cysteine sulfenic acid. This project aims to introduce strained alkenes as probes for cysteine sulfenic acid, a poorly understood biomarker for oxidative stress. This probe will enable rapid detection of cysteine sulfenic acid and meet an urgent need for tools to map cysteine redox signalling. Moreover, since many enzymes feature a cysteine sulfenic acid at their active site, the strained alkene probes will also serve as useful inhibitor probes of these enzymes. Such inhibitor probes will provide critical information for potential therapeutic applications in human conditions associated with oxidative stress such as ageing, cancer, and heart disease.Read moreRead less
A Tough Resilin Based Hydrogel Platform for Repair and Regeneration. This project seeks to develop novel hydrogels that mimic the properties of the body. In the field of repair and regeneration, our challenge is to make hydrogels that retain the fatigue and resilience properties of the natural body part, but are comprised of nontoxic material. Resilin is a remarkable material exhibiting a broad range of stimuli-responsive behaviour and outstanding elasticity. The project aim is to create a tough ....A Tough Resilin Based Hydrogel Platform for Repair and Regeneration. This project seeks to develop novel hydrogels that mimic the properties of the body. In the field of repair and regeneration, our challenge is to make hydrogels that retain the fatigue and resilience properties of the natural body part, but are comprised of nontoxic material. Resilin is a remarkable material exhibiting a broad range of stimuli-responsive behaviour and outstanding elasticity. The project aim is to create a tough and responsive hydrogel platform from this disordered protein family through greater understanding of structure and mechanical function and incorporating adequate stiffness, strength and biocompatibility. Such tough hydrogels would be applicable to a range of biotechnological applications (eg intervertebral disc repair or artificial skin tissue engineering).Read moreRead less
Bio-inspired molecular electronics: from nanoscience to nanotechnology. This project aims to investigate electron transport in naturally occurring peptides, while exploiting their electronic properties to promote the design and development of functional bio-inspired molecular electronic devices. Molecular electronics is at the forefront of international interdisciplinary research, with its significance and necessity stemming from the inevitable physical limitations of existing silicon-based elec ....Bio-inspired molecular electronics: from nanoscience to nanotechnology. This project aims to investigate electron transport in naturally occurring peptides, while exploiting their electronic properties to promote the design and development of functional bio-inspired molecular electronic devices. Molecular electronics is at the forefront of international interdisciplinary research, with its significance and necessity stemming from the inevitable physical limitations of existing silicon-based electronics. This project aims to establish a foundation to advance fundamental knowledge in this area, which will lead to the design and development of functional bio-inspired molecular electronic devices.Read moreRead less