Is FGF21 the master regulator of protein intake? The project plans to bring together two major, rapidly growing disciplines – nutritional geometry and metabolic signalling – to address a topic of fundamental biological significance: the regulation of protein intake. A specific capacity to regulate protein intake has been shown for organisms spanning slime moulds to humans, yet the controlling mechanisms remain elusive. The project aims to test the hypothesis that fibroblast growth factor 21, rel ....Is FGF21 the master regulator of protein intake? The project plans to bring together two major, rapidly growing disciplines – nutritional geometry and metabolic signalling – to address a topic of fundamental biological significance: the regulation of protein intake. A specific capacity to regulate protein intake has been shown for organisms spanning slime moulds to humans, yet the controlling mechanisms remain elusive. The project aims to test the hypothesis that fibroblast growth factor 21, released from the liver under low protein nutrition, is a master regulator of protein intake. Understanding the mechanisms of protein appetite may have implications for organismal biology, understanding social interactions, the structure of food webs and the health and welfare of food and companion animals and humans.Read moreRead less
Design of the cardiovascular system of living and fossil vertebrates. This project aims to understand how the heart and blood vessels evolved in mammals, birds, reptiles and fish to achieve efficiency. The heart is the most important organ for life. The project will study the structure and function of vertebrate animals’ hollow and spongy hearts to show how energetics shaped their evolution. It will measure arterial holes in bone to gauge brain and bone metabolism, which opens up a new way to me ....Design of the cardiovascular system of living and fossil vertebrates. This project aims to understand how the heart and blood vessels evolved in mammals, birds, reptiles and fish to achieve efficiency. The heart is the most important organ for life. The project will study the structure and function of vertebrate animals’ hollow and spongy hearts to show how energetics shaped their evolution. It will measure arterial holes in bone to gauge brain and bone metabolism, which opens up a new way to measure metabolism in extinct animals directly from fossils, rather than by inference from living relatives. The expected outcome is to correlate cardiovascular design and metabolic rates of organs.Read moreRead less
Electric field effects on cochlear tissues. The project aims to solve the underlying biology of how electricity flows through the cochlear tissues, where and how electrical stimulation excites the auditory neurons, and what the effects of sustained electrical stimulation are on the nerve fibre growth and function. The research aims to show how electric fields can be controlled in the cochlea, and how auditory nerve fibres are affected at the cellular and molecular level. The long-term aim is to ....Electric field effects on cochlear tissues. The project aims to solve the underlying biology of how electricity flows through the cochlear tissues, where and how electrical stimulation excites the auditory neurons, and what the effects of sustained electrical stimulation are on the nerve fibre growth and function. The research aims to show how electric fields can be controlled in the cochlea, and how auditory nerve fibres are affected at the cellular and molecular level. The long-term aim is to utilise these findings to improve the control of neuronal excitability, for development of interfaces with the nervous system.Read moreRead less
Does muscle contribute to the maintenance of vitamin D status in winter? This project aims to test the mechanism by which vitamin D status is maintained in winter when input is low. The long half-life in blood of the vitamin D metabolite, 25-hydroxyvitamin D [25(OH)D], maintains an adequate vitamin D status over winter, when sunlight, which produces vitamin D in skin, is reduced. From preliminary data in sheep and mice, this project proposes that skeletal muscle, not fat, stores vitamin D. This ....Does muscle contribute to the maintenance of vitamin D status in winter? This project aims to test the mechanism by which vitamin D status is maintained in winter when input is low. The long half-life in blood of the vitamin D metabolite, 25-hydroxyvitamin D [25(OH)D], maintains an adequate vitamin D status over winter, when sunlight, which produces vitamin D in skin, is reduced. From preliminary data in sheep and mice, this project proposes that skeletal muscle, not fat, stores vitamin D. This project will test this hypothesis in sheep, cultured muscle cells and in transgenic mice. The project will confirm whether the processes identified in skeletal muscle contribute to the maintenance of vitamin D status, and identify ways of enhancing this process.Read moreRead less
Neurons and neurotransmitters that control the apnoeic response to irritation of the larynx. Normal function of the larynx enables breathing, cough, singing, speech and many other normal functions. This project will reveal how nerves in the brain coordinate to achieve these many functions; in particular the way that breathing stops if fluid or smoke enters the larynx.
Discovery Early Career Researcher Award - Grant ID: DE130101357
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Modulation of gap-junction coupling in the mammalian retina. This project aims to examine the alteration in neuronal circuits of the retina over the course of the day and in response to changes in light. Basic knowledge of how the retina functions will be determined, providing invaluable information for strategies aimed at restoring vision to vision-impaired patients by replicating normal retinal function.
Skeletal endocrine signalling in the regulation of glucose metabolism. This project seeks to explore a highly novel and interesting recent development in bone biology: the fact that the skeleton is a central regulator of glucose metabolism. Currently, the mechanisms involved in this process remain unclear. mTORC1 has been identified as a signalling pathway in bone cells that modulates glucose metabolism. This project plans to selectively delete mTORC1 in the bone cells of mice to examine how ske ....Skeletal endocrine signalling in the regulation of glucose metabolism. This project seeks to explore a highly novel and interesting recent development in bone biology: the fact that the skeleton is a central regulator of glucose metabolism. Currently, the mechanisms involved in this process remain unclear. mTORC1 has been identified as a signalling pathway in bone cells that modulates glucose metabolism. This project plans to selectively delete mTORC1 in the bone cells of mice to examine how skeletal mTORC1 signalling regulates glucose metabolism, and identify novel pathways and circulating factors involved in this process. These studies may provide greater understanding of the basic biology of glucose metabolism, and may have applications in animal husbandry and the future management of diabetes.Read moreRead less
Bias and allostery at the calcium sensing receptor. This project aims to provide a mechanistic and dynamic picture of the structure, function and physiology of the human calcium sensing receptor (CaSR), which is critical for vertebrate life. By responding to chemicals in the body, it acts as a universal nutrient sensor to maintain extracellular calcium homeostasis and mediate biological functions, including neurotransmission, inflammation, digestion, blood pressure and development. However, it i ....Bias and allostery at the calcium sensing receptor. This project aims to provide a mechanistic and dynamic picture of the structure, function and physiology of the human calcium sensing receptor (CaSR), which is critical for vertebrate life. By responding to chemicals in the body, it acts as a universal nutrient sensor to maintain extracellular calcium homeostasis and mediate biological functions, including neurotransmission, inflammation, digestion, blood pressure and development. However, it is not known how this single receptor controls the actions of multiple ligands to mediate numerous functions. By elucidating the roles of the CaSR and its ligands, this project aims to better understand fundamental physiological processes.Read moreRead less
A life-course approach to the nutrition-lifespan-reproduction nexus. This project aims to address the “cost of reproduction”, where lifespan and fecundity are negatively correlated. Bringing together nutritional geometry and evolutionary theory, to the project will produce an over-arching theory of why animals have finite lifespans and limited reproductive capacity. Benefits include developing research strategies for managing the nexus between diet, reproduction and lifespan in animals and human ....A life-course approach to the nutrition-lifespan-reproduction nexus. This project aims to address the “cost of reproduction”, where lifespan and fecundity are negatively correlated. Bringing together nutritional geometry and evolutionary theory, to the project will produce an over-arching theory of why animals have finite lifespans and limited reproductive capacity. Benefits include developing research strategies for managing the nexus between diet, reproduction and lifespan in animals and humans, placing Australia at the forefront of a paradigm shift in understanding the relationship between diet, reproduction and lifespan.Read moreRead less
THE MATERNAL GUT MICROBIOTA DRIVES FOETAL THYMIC T CELL DEVELOPMENT . This project aims to investigate the role of maternal gut microbiota on foetal immune development, revealing the interaction of gut microbiota-host immunity at the early stages of new life. Significantly, the research will examine the time window when microbiota by-products from the mother reach the foetus and affect the development of immunity. Maternal by-products will be identified using cutting-edge methods to unravel the ....THE MATERNAL GUT MICROBIOTA DRIVES FOETAL THYMIC T CELL DEVELOPMENT . This project aims to investigate the role of maternal gut microbiota on foetal immune development, revealing the interaction of gut microbiota-host immunity at the early stages of new life. Significantly, the research will examine the time window when microbiota by-products from the mother reach the foetus and affect the development of immunity. Maternal by-products will be identified using cutting-edge methods to unravel the complex systems interactions in the developmental process. Outcomes include new fundamental knowledge about maternal gut microbiota composition and its relationship to the growing foetus, with benefits in informing pregnant women about their lifestyle choices, particularly their dietary habits, during pregnancy.
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