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Regulated muscle-based thermogenesis for body temperature regulation. Mammals maintain a constant core body temperature by generating heat in resting muscles in response to changes in the environmental temperatures. This project aims to show how the skeletal muscles that are closer to the body core contribute the majority of heat, how the muscles of the limbs have their heat generation curtailed as necessary, and how this is coordinated by the body in response to ambient temperature. Project out ....Regulated muscle-based thermogenesis for body temperature regulation. Mammals maintain a constant core body temperature by generating heat in resting muscles in response to changes in the environmental temperatures. This project aims to show how the skeletal muscles that are closer to the body core contribute the majority of heat, how the muscles of the limbs have their heat generation curtailed as necessary, and how this is coordinated by the body in response to ambient temperature. Project outcomes include defining, for the first time, how heat generation in the muscles of the body is regulated. This should provide critical knowledge of mammalian evolution and ways to manipulate metabolism, which may provide ways to assist the production of meat by managing hypothermia and hyperthermia risk in agriculture.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE220100259
Funder
Australian Research Council
Funding Amount
$467,964.00
Summary
Interrogating the adaptive potential of skeletal muscle. Disruptions to muscle oxidative capacity and growth signalling underpin atrophy and dysfunction with ageing, which impacts on an individual’s quality of life. These biological processes are thought to be mutually exclusive and compete during muscle adaptation. This project aims to define how these processes regulate the extent of muscle adaptation, and how modifying these attributes influence functional capacity in the context of ageing. T ....Interrogating the adaptive potential of skeletal muscle. Disruptions to muscle oxidative capacity and growth signalling underpin atrophy and dysfunction with ageing, which impacts on an individual’s quality of life. These biological processes are thought to be mutually exclusive and compete during muscle adaptation. This project aims to define how these processes regulate the extent of muscle adaptation, and how modifying these attributes influence functional capacity in the context of ageing. This project will provide fundamental new knowledge in understanding how modifying muscle attributes influence successful ageing. This knowledge will improve resilience, productivity, and wellbeing of all Australians, with implications for reducing societal and economic burden.Read moreRead less
Age-related mechanisms of amino acid signalling in skeletal muscle. This project aims to increase our understanding of the role of glycine receptor-mediated signalling and its metabolism in the amino acid sensing capacity of mTORC1, a key enzyme regulating muscle protein synthesis. Ageing is associated with a progressive decline in skeletal muscle mass, weakness, and impaired regeneration after injury. Impaired anabolic signalling after food intake has been proposed as a key contributor, yet the ....Age-related mechanisms of amino acid signalling in skeletal muscle. This project aims to increase our understanding of the role of glycine receptor-mediated signalling and its metabolism in the amino acid sensing capacity of mTORC1, a key enzyme regulating muscle protein synthesis. Ageing is associated with a progressive decline in skeletal muscle mass, weakness, and impaired regeneration after injury. Impaired anabolic signalling after food intake has been proposed as a key contributor, yet the metabolic pathways responsible for nutrient sensing and regulation of protein synthesis remain unresolved. The project will assess defective amino acid sensing and protein synthesis in old mammals, identifying the role of glycine signalling in these processes. The project expects to underpin development of muscle-specific modulators of muscle homeostasis with broad relevance to Australia’s ageing population.Read moreRead less
Iron accumulation in the nematode C.elegans: a model of ageing. This project will investigate the role of biological metals in the process of ageing, the causes of which remain unresolved. The practical outcomes for society are broad; beyond improving understandings of the basic biology of ageing, this study will provide new insight and approaches that can be used to optimise lifespan.
Role of suppressor of cytokine signalling proteins (SOCS3) in defective muscle repair and ageing. Old muscles are slower and weaker than young muscles, they are injured more easily and they repair less successfully. This proposal investigates the role of SOCS3-signalling in muscle repair, ultimately to improve healing and to promote healthy ageing that will enable older Australians to enjoy a better quality of life.