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A New Class Of Inhibitors For The Treatment Of Tuberculosis
Funder
National Health and Medical Research Council
Funding Amount
$720,691.00
Summary
Tuberculosis (TB) remains a major cause of mortality and morbidity worldwide, with 1.3 million deaths annually. Some strains of the TB bacterium are resistant to all available drugs. We have identified novel chemical structures that display potent and specific activity against pathogenic mycobacteria. In this proposal we will develop optimised derivatives with more potent activity against mycobacteria, assess their stability and toxicity and determine their mode of action.
An Ace Up Their Sleeve: Characterisation Of A Novel Family Of Drug Efflux Systems Represented By The Acinetobacter AceI Exporter
Funder
National Health and Medical Research Council
Funding Amount
$400,286.00
Summary
Chlorhexidine is widely used as an antiseptic in products such as skin washes, soaps, mouthwashes, disinfectants and preservatives. We have recently discovered a novel bacterial protein which pumps chlorhexidine out of bacterial cells to make them resistant to this antiseptic agent. This proposal aims to understand this resistance mechanism and to find inhibitors which could be applied in clinical settings to augment the activity of chlorhexidine.
Reversing Antibiotic Resistance With Efflux Pump Inhibitors
Funder
National Health and Medical Research Council
Funding Amount
$494,174.00
Summary
Antibiotic resistance in dangerous pathogens is one of the greatest threats to human health of the 21st century. The main cause of multidrug resistance is the presence of drug efflux pumps, which remove antibiotics from the bacterial cell thereby lowering the antibiotic concentration inside the cells to sub-toxic levels. We will use our expertise on these efflux pumps and on how to inhibit them to develop compounds that could reverse resistance and restore the activity of antibiotics.
Regulation From The Outside: Control Of Transport And Assembly Of Major Cell Wall Components In Mycobacteria
Funder
National Health and Medical Research Council
Funding Amount
$652,019.00
Summary
Tuberculosis (TB) kills nearly two million people each year while the causative bacterial species, Mycobacterium tuberculosis, infects one-third of the entire human population. An alarmingly high rate of TB exists in Australia's indigenous population. This proposal aims to identify and characterise essential processes that regulate synthesis of the outer coat of the bacterium, which are potential targets for new drugs for the treatment of this devastating disease.
Design, Development And Analysis Of New Tuberculosis Drugs
Funder
National Health and Medical Research Council
Funding Amount
$736,628.00
Summary
Serious issues of drug resistance have emerged in tuberculosis prevention and are placing enormous pressure on global health systems. We have identified an enzyme of M. tuberculosis that is essential for its survival. This project will develop potent inhibitory compounds for this enzyme. Further, we will identify new drug targets through a screen to specifically identify the genes of the organism essential for its survival in the body. This information will be used to develop new TB drugs.
Exploitation Of Bacterial Transcription Initiation As A Target For New Antimicrobials
Funder
National Health and Medical Research Council
Funding Amount
$540,356.00
Summary
Antibiotic resistant infections from 'superbugs' are a major health problem. We will exploit information we have gathered on the machinery that copies genetic information into a message to discover chemical compounds that can be used for the development of new antibiotics with a novel mechanism of action.
Determining The Bacterial Contributions To Tuberculosis And Identification Of Drug Targets
Funder
National Health and Medical Research Council
Funding Amount
$443,946.00
Summary
Serious issues of drug resistance have emerged in tuberculosis prevention and are placing enormous pressure on global health systems. We have identified an enzyme of M. tuberculosis that is essential for its survival. This project will develop potent inhibitory compounds for this enzyme. Further, we will identify new drug targets through a screen to specifically identify the genes of the organism essential for its survival in the body. This information will be used to develop new TB drugs.
Metabolism-driven Interactions Of Non-typeable Haemophilus Influenzae And Its Host: A Critical Factor In Infection?
Funder
National Health and Medical Research Council
Funding Amount
$474,932.00
Summary
Non-typeable Haemophilus influenzae (NTHi) is the underlying cause of many severe acute and chronic respiratory infections, which represent a significant burden to the healthcare system. As NTHi is unable to survive outside the human host, it is is highly adapted to survival in the body niches it colonizes. We are investigating how NTHI is able to survive in the presence of tissue inflammation, and whether it contributes to the inflammatory process through some of its metabolic products.
Once treatable infections are becoming deadly because bacteria are developing broad antibiotic resistance. New medicines are urgently needed. Microbes themselves are the richest known source of new antibiotics but finding the 'good bugs' is like finding a needle in a microbial haystack. This project will use state-of-the art science to screen a previously overlooked source of rich microbial biodiversity and find new antibiotics.
Developing New Therapies To Combat Tuberculosis Through Inhibition Of Vitamin B5 Metabolism In The Organism That Causes The Disease
Funder
National Health and Medical Research Council
Funding Amount
$311,760.00
Summary
The metabolism of vitamin B5 by pathogenic microorganisms has been recognised as an attractive target for developing drugs to combat various infectious diseases. The aim of the proposed work is to develop inhibitors of vitamin B5 metabolism in the bacterium that causes tuberculosis, using a powerful, multidisciplinary approach known as “fragment-based drug discovery”. This work is likely to yield potent inhibitors of the target bacterium, which could ultimately be used to treat tuberculosis.