Hitting bacteria with a Bam: Lectin-Like Antimicrobials as New Antibiotics. Antibiotic resistance in disease-causing bacteria is a rapidly growing problem, making the development of new antibiotics of critical importance. This project aims to develop naturally produced lectin-like protein antibiotics as novel antimicrobial agents. To achieve this, the project will produce an extensive library of these antibiotics and test them for potency and specificity. Using cutting-edge techniques, it will d ....Hitting bacteria with a Bam: Lectin-Like Antimicrobials as New Antibiotics. Antibiotic resistance in disease-causing bacteria is a rapidly growing problem, making the development of new antibiotics of critical importance. This project aims to develop naturally produced lectin-like protein antibiotics as novel antimicrobial agents. To achieve this, the project will produce an extensive library of these antibiotics and test them for potency and specificity. Using cutting-edge techniques, it will determine how these antibiotics kill cells on a molecular and cellular level. It is anticipated this research will create the tools and knowledge required to exploit lectin-like protein antibiotics to fight bacterial infection, which will lead to their use in the prevention of crop and livestock losses due to disease.Read moreRead less
Mechanism of secretion of large clostridial toxins . This project aims to investigate how the large clostridial toxins are secreted from important animal bacterial pathogens. This project expects to generate new knowledge about how bacteria interact with hosts through protein secretion, using a collaborative and interdisciplinary approach and cutting-edge techniques. Expected outcomes of this project include building a deep understanding of the role of export machinery in toxin secretion from ba ....Mechanism of secretion of large clostridial toxins . This project aims to investigate how the large clostridial toxins are secreted from important animal bacterial pathogens. This project expects to generate new knowledge about how bacteria interact with hosts through protein secretion, using a collaborative and interdisciplinary approach and cutting-edge techniques. Expected outcomes of this project include building a deep understanding of the role of export machinery in toxin secretion from bacteria, and the identification of new systems by which this is achieved. This should provide significant benefits, such as gaining new insights into new bacterial protein export mechanisms, with the aim of identifying targets for future veterinary disease interventions or biotechnological applications.Read moreRead less
How bacteria form resistant aggregates and biofilms. This research aims to use interdisciplinary approaches to advance fundamental knowledge on bacterial aggregates and biofilms. These bacterial clusters are a significant problem as they have extraordinary resistance to disinfectants and antibiotics, and currently no effective methods are available to disrupt them. The expected outcomes of this project are to dissect how autotransporters, the most common group of bacterial cell-surface proteins, ....How bacteria form resistant aggregates and biofilms. This research aims to use interdisciplinary approaches to advance fundamental knowledge on bacterial aggregates and biofilms. These bacterial clusters are a significant problem as they have extraordinary resistance to disinfectants and antibiotics, and currently no effective methods are available to disrupt them. The expected outcomes of this project are to dissect how autotransporters, the most common group of bacterial cell-surface proteins, promote aggregation and biofilm formation, and to develop inhibitors that prevent the formation of these damaging bacterial clusters. Ultimately, this new knowledge will help address the increasing economic and social burden of industrial, environmental and biomedical biofilms.Read moreRead less
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
Discovery Early Career Researcher Award - Grant ID: DE220101221
Funder
Australian Research Council
Funding Amount
$453,614.00
Summary
Revealing bat antibody recognition mechanism against bat-borne viruses. Bats act as asymptomic reservoir hosts for numerous zoonotic viruses that are lethal in humans, indicating that the bat immune system can control these viruses. However, little is known about bat immunity including how bat antibodies recognise bat-borne viruses. This project aims to study bat anti-viral antibodies by utilising innovative protein engineering, cutting-edge cryo-EM technology and single-cell isolation and seque ....Revealing bat antibody recognition mechanism against bat-borne viruses. Bats act as asymptomic reservoir hosts for numerous zoonotic viruses that are lethal in humans, indicating that the bat immune system can control these viruses. However, little is known about bat immunity including how bat antibodies recognise bat-borne viruses. This project aims to study bat anti-viral antibodies by utilising innovative protein engineering, cutting-edge cryo-EM technology and single-cell isolation and sequencing. The project seeks to uncover bat-borne zoonotic virus glycoprotein architecture and reveal how bat antibodies function to inhibit viral infection. Expected outcomes will be new insight and tools to combat emerging and yet to emerge pathogens, enabling pandemic preparedness and increasing global biosecurity.
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The molecular mechanism of bacterial ABC toxins. This project aims to establish that the ABC family of bacterial protein toxins, the main virulence factors in many species of naturally-occurring bacterial pathogens of insect pests, represent a protein machinery that cells and other organisms may use to deliver bioactive proteins to specific cells. ABC toxins are the main virulence factors in many species of naturally-occurring bacterial pathogens of insect pests. This project aims to establish t ....The molecular mechanism of bacterial ABC toxins. This project aims to establish that the ABC family of bacterial protein toxins, the main virulence factors in many species of naturally-occurring bacterial pathogens of insect pests, represent a protein machinery that cells and other organisms may use to deliver bioactive proteins to specific cells. ABC toxins are the main virulence factors in many species of naturally-occurring bacterial pathogens of insect pests. This project aims to establish that ABC toxins represent a new protein machinery that may be used more widely throughout cells and other organisms to direct the intercellular delivery of bioactive proteins in a highly cell-specific manner. The project expects these findings to enable the development of biopesticides based on ABC toxins, and generic intercellular protein delivery devices for biotechnological use.Read moreRead less
From shape to function: how structured RNA defines insect flaviviruses. The goal of this project is to obtain an understanding of how insect-specific flaviviruses (ISFs) utilise viral noncoding RNAs to enable their replication in mosquitoes. These viruses only replicate in mosquitoes, and not in humans or animals. They can be employed as the biocontrol agents for mosquito-borne diseases as they make mosquitoes incapable of disease transmission. However, it is currently unknown how exactly insect ....From shape to function: how structured RNA defines insect flaviviruses. The goal of this project is to obtain an understanding of how insect-specific flaviviruses (ISFs) utilise viral noncoding RNAs to enable their replication in mosquitoes. These viruses only replicate in mosquitoes, and not in humans or animals. They can be employed as the biocontrol agents for mosquito-borne diseases as they make mosquitoes incapable of disease transmission. However, it is currently unknown how exactly insect-specific flaviviruses affect mosquitoes and this information is vital for informed design of ISF-based interventions. The project will generate new knowledge on functions of noncoding RNAs in ISFs that are hypothesised to have immunomodulatory role in mosquitoes. It will also train students and ECRs.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE240100388
Funder
Australian Research Council
Funding Amount
$437,977.00
Summary
Ecological and phylogenomic insights into infectious diseases in animals. This project aims to address major knowledge gaps in our understanding of Clostridium difficile, a leading cause of severe gastrointestinal disease in animals. The project is expected to define the epidemiology of C. difficile infection in Australian horses, characterise the genetic and phenotypic traits of C. difficile strains causing equine disease and develop a new tool for enhanced genomic tracking of C. difficile in a ....Ecological and phylogenomic insights into infectious diseases in animals. This project aims to address major knowledge gaps in our understanding of Clostridium difficile, a leading cause of severe gastrointestinal disease in animals. The project is expected to define the epidemiology of C. difficile infection in Australian horses, characterise the genetic and phenotypic traits of C. difficile strains causing equine disease and develop a new tool for enhanced genomic tracking of C. difficile in animals. These outcomes will support strategies by the veterinary sector to improve the detection, prevention and control of C. difficile infections in animals, providing long-term socio-economic benefits arising from reduced incidence and mortality associated with C. difficile infections in Australian horses and livestock.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200100977
Funder
Australian Research Council
Funding Amount
$419,016.00
Summary
How ecology shapes the viromes of wild birds. This project will reveal the host factors associated with the diversity, evolution and dynamics of viruses using state-of-the-art metatranscriptomics in Australian wild birds. The structure of virus communities and their associated ecological drivers in wild animal hosts remain a black-box, even though they are the largest source of viral diversity in nature. This project expects to generate key insights into host-associated drivers of viral communit ....How ecology shapes the viromes of wild birds. This project will reveal the host factors associated with the diversity, evolution and dynamics of viruses using state-of-the-art metatranscriptomics in Australian wild birds. The structure of virus communities and their associated ecological drivers in wild animal hosts remain a black-box, even though they are the largest source of viral diversity in nature. This project expects to generate key insights into host-associated drivers of viral community dynamics and the subsequent effect of anthropogenic factors such as urbanisation and poultry production. Identifying host factors that affect viral ecology in wild birds will constitute a cornerstone in understanding the emergence of virulent viruses and/or their spread to poultry or humansRead moreRead less
Australian Laureate Fellowships - Grant ID: FL170100022
Funder
Australian Research Council
Funding Amount
$3,402,903.00
Summary
Redefining virus ecology and evolution. This project aims to employ novel genomic analyses of viruses from Australian fauna to resolve major questions in RNA virus ecology and evolution, and is expected to reveal the basic processes that shape the virosphere, determine how viruses jump species to emerge and cause disease in new hosts, and how viruses evolve new levels of virulence. The research will provide a new understanding of how viruses evolve and contribute to global ecosystems and develop ....Redefining virus ecology and evolution. This project aims to employ novel genomic analyses of viruses from Australian fauna to resolve major questions in RNA virus ecology and evolution, and is expected to reveal the basic processes that shape the virosphere, determine how viruses jump species to emerge and cause disease in new hosts, and how viruses evolve new levels of virulence. The research will provide a new understanding of how viruses evolve and contribute to global ecosystems and develop new bioinformatics tools to identify and analyse highly divergent genome sequences through studying meta-transcriptomic data from diverse animal phyla, from prokaryotes and basal eukaryotes, from iconic native mammalian species and their major invasive pests. The benefits provided will include determining the viromes of native and invasive species and enhancing the efforts to protect iconic Australian species from infectious disease.Read moreRead less