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Discovery Early Career Researcher Award - Grant ID: DE220100965
Funder
Australian Research Council
Funding Amount
$444,582.00
Summary
Understanding nutritional interactions for targeted microbiome manipulation. This project aims to identify how microbial communities, known as microbiomes, can be effectively manipulated to the benefit of their host. Microbiome manipulation has been in the spotlight as a potential solution to maintain or improve the health of several hosts, from threatened coral species to livestock and humans, but the development of industry-scale strategies has been slow. This project proposes to chart the nut ....Understanding nutritional interactions for targeted microbiome manipulation. This project aims to identify how microbial communities, known as microbiomes, can be effectively manipulated to the benefit of their host. Microbiome manipulation has been in the spotlight as a potential solution to maintain or improve the health of several hosts, from threatened coral species to livestock and humans, but the development of industry-scale strategies has been slow. This project proposes to chart the nutritional interactions among microorganisms and to identify cascade effects of microbiome manipulation. This will generate fundamental knowledge on the biological processes underlying community stability and malleability, which will ultimately help engineering optimised microbiomes.Read moreRead less
Unlocking bacterial shapeshifting and its role in antimicrobial resistance. This project aims to combine advanced imaging with innovative microfluidics to identify how microbial shapeshifting can be exploited as a target for new antimicrobials. Infections that are hard to treat due to increasing antimicrobial resistance not only have an enormous, global impact on mammalian health, including livestock and humans, but also carry a growing economic burden. Advanced understanding of microbial life c ....Unlocking bacterial shapeshifting and its role in antimicrobial resistance. This project aims to combine advanced imaging with innovative microfluidics to identify how microbial shapeshifting can be exploited as a target for new antimicrobials. Infections that are hard to treat due to increasing antimicrobial resistance not only have an enormous, global impact on mammalian health, including livestock and humans, but also carry a growing economic burden. Advanced understanding of microbial life can propel urgently needed progress this area. Specifically, the project outcomes are expected to aid the development of next generation antibiotics. The new fundamental knowledge should also benefit translational prevention, identification and management efforts of a rising national and global health threat.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140100963
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
Biofilms and quorum sensing in pneumococcal biology. Bacteria survive in their environmental niches by development of complex multicellular communities (biofilms), not by operating as individuals. Communication between bacteria is critical for biofilm formation, and is linked to their capacity to exchange DNA within and between species (competence). This is achieved by secretion and detection of small chemical signalling molecules (quorum sensing). Two such systems operate in the pneumococcus, a ....Biofilms and quorum sensing in pneumococcal biology. Bacteria survive in their environmental niches by development of complex multicellular communities (biofilms), not by operating as individuals. Communication between bacteria is critical for biofilm formation, and is linked to their capacity to exchange DNA within and between species (competence). This is achieved by secretion and detection of small chemical signalling molecules (quorum sensing). Two such systems operate in the pneumococcus, a model Gram-positive organism. This project aims to elucidate the mechanism whereby these quorum sensing systems interact and collaborate to regulate biofilm formation and competence, phenotypes critical for bacterial survival. This knowledge will enable future development of novel antimicrobials. Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200100111
Funder
Australian Research Council
Funding Amount
$373,097.00
Summary
Replication and transfer of novel plasmid classes in Acinetobacter. The project aims to reveal basic biology of plasmids found in Acinetobacter baumannii. A. baumannii is a bacterial pathogen that can rapidly acquire resistance to antibiotics, including last-resort antibiotics. In modern strains, acquisition is often mediated by plasmids. On the basis of DNA sequencing data, A. baumannii plasmids are likely to function differently to well-studied plasmids. However, surprisingly little experiment ....Replication and transfer of novel plasmid classes in Acinetobacter. The project aims to reveal basic biology of plasmids found in Acinetobacter baumannii. A. baumannii is a bacterial pathogen that can rapidly acquire resistance to antibiotics, including last-resort antibiotics. In modern strains, acquisition is often mediated by plasmids. On the basis of DNA sequencing data, A. baumannii plasmids are likely to function differently to well-studied plasmids. However, surprisingly little experimental work has been done to evidence this. By combining microbiological and bioinformatics approaches the project expects to generate new knowledge on the mechanisms of replication and transfer of A. baumannii plasmids. This may lead to new targets for strategies to slow and track the spread of antibiotic resistance.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE160100127
Funder
Australian Research Council
Funding Amount
$355,000.00
Summary
Superresolution fluorescence imaging in microbiology. Superresolution fluorescence imaging in microbiology:
This project involves the purchase of new, and upgrade of existing, fluorescence imaging tools to facilitate the study of intracellular processes in microbial systems at significantly higher spatial and temporal resolutions than hitherto possible. Visualisation of the structure and dynamics of intracellular molecular assemblies at maximal resolution is required to understand protein funct ....Superresolution fluorescence imaging in microbiology. Superresolution fluorescence imaging in microbiology:
This project involves the purchase of new, and upgrade of existing, fluorescence imaging tools to facilitate the study of intracellular processes in microbial systems at significantly higher spatial and temporal resolutions than hitherto possible. Visualisation of the structure and dynamics of intracellular molecular assemblies at maximal resolution is required to understand protein function inside living cells. The new equipment is designed to provide a fast super-resolution imaging system to study the intracellular dynamics of proteins in vitro and a super-resolution microscope to visualise structures and assemblies inside microbes with a resolution of tens of nanometres, putting in vitro biochemistry into the context of a living cell. Read moreRead less
Molecular characterisation of hypervirulence and the infectious cycle in Clostridium difficile. Gut diseases caused by the bacterium Clostridium difficile are a significant animal and public health problem in Australia and many other countries. This project will allow us to understand how this bacterium causes disease, leading to the development of much needed preventative and treatment strategies for animals and human patients.
Discovery Early Career Researcher Award - Grant ID: DE230101284
Funder
Australian Research Council
Funding Amount
$397,003.00
Summary
Insect-specific virus host restriction. Mosquito-borne viruses are a topic of intense research due to their complex biology, ecology and evolution, and their potential to produce unpredictable outbreaks of disease in both humans and animals. Insect-specific viruses (ISVs) are viruses that replicate solely in mosquito cell and are unable to infect vertebrate tissues. This project aims to assess the biodiversity of ISVs in the Australian mosquito population and identify key factors behind their re ....Insect-specific virus host restriction. Mosquito-borne viruses are a topic of intense research due to their complex biology, ecology and evolution, and their potential to produce unpredictable outbreaks of disease in both humans and animals. Insect-specific viruses (ISVs) are viruses that replicate solely in mosquito cell and are unable to infect vertebrate tissues. This project aims to assess the biodiversity of ISVs in the Australian mosquito population and identify key factors behind their restriction in vertebrates. The objectives of the studies proposed will answer clearly defined important biological questions about ISVs, while also delivering technological advances, novel reagents and potential commercial outcomes for the control and prevention of arboviral disease. Read moreRead less
A link between antibiotic resistance and bacterial sporulation. This project aims to define the sporulation process in the bacterium Clostridium difficile, and advance our understanding of a link between antibiotic use and sporulation. To survive in hostile environments, some bacteria produce a dormant and resilient cell form called a spore which can survive for many years in unfavourable environments, but our understanding of how this process occurs is limited. This project will provide a deepe ....A link between antibiotic resistance and bacterial sporulation. This project aims to define the sporulation process in the bacterium Clostridium difficile, and advance our understanding of a link between antibiotic use and sporulation. To survive in hostile environments, some bacteria produce a dormant and resilient cell form called a spore which can survive for many years in unfavourable environments, but our understanding of how this process occurs is limited. This project will provide a deeper understanding of the sporulation process and the long-lasting detrimental impact of antibiotic use. The project expects to provide economic benefits, reduce environmental microbial contamination and contribute to better health of animals and humans.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240100316
Funder
Australian Research Council
Funding Amount
$435,431.00
Summary
Population genomic methods for modelling bacterial pathogen evolution. This project aims to develop novel techniques to model bacterial genome evolution and improve our understanding of how major agricultural and human pathogens, including Enterococcus, Salmonella and E. coli, evolve. The project expects to generate new knowledge about how horizontal gene transfer shapes the evolution of bacteria and how these dynamics vary over different temporal scales. Expected outcomes include methodological ....Population genomic methods for modelling bacterial pathogen evolution. This project aims to develop novel techniques to model bacterial genome evolution and improve our understanding of how major agricultural and human pathogens, including Enterococcus, Salmonella and E. coli, evolve. The project expects to generate new knowledge about how horizontal gene transfer shapes the evolution of bacteria and how these dynamics vary over different temporal scales. Expected outcomes include methodological advances that will enable the analysis of massive contemporary datasets. These methods and resulting analyses will provide significant benefits including informing the design of superior long-term interventions to reduce bacterial disease in both agriculture and health that are robust to the evolution of bacteria.Read moreRead less
Understanding the dynamics of malaria infection. Malaria infection kills around one million patients each year and this project involves an interdisciplinary team who will directly measure how the parasite grows and is killed by the immune system. A better understanding of parasite growth and control will help develop better drugs therapy and vaccination for this important infection.