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E. coli is a normal inhabitant of the human intestine, but some varieties can cause serious infections that may lead to the premature death of children, especially in less developed countries. The aims of this study are to learn more about these harmful varieties of E. coli and to enhance our ability to detect them in samples from patients and the environment.
Combating E. Coli Diarrhoea By Disarming Bacterial Virulence
Funder
National Health and Medical Research Council
Funding Amount
$674,737.00
Summary
E. coli causes severe and persistent diarrhoea which affects the health of millions of people worldwide. Although antibiotics may alleviate E. coli diarrhoea, these bacteria are becoming resistant to most drugs. In this study, we will use state-of-the-art technology to discover novel types of drug that treat and prevent infection with E. coli, without harming the beneficial bacteria in the gut.
Class-specific Virulence Determinants Of Atypical Enteropathogeneic E. Coli
Funder
National Health and Medical Research Council
Funding Amount
$672,134.00
Summary
Some varieties of E. coli cause diarrhoea, but they are difficult to diagnose in the laboratory. The aim of this study is to find specific genes of disease-associated E. coli that could be used as targets to identify these bacteria in patients with diarrhoea. The discovery of genes from E. coli that could be used as diagnostic targets will provide invaluable tools to study the epidemiology and clinical impact of these bacteria in patients in Australia and overseas.
A Novel Therapeutic Target For Preventing Helicobacter Pylori-associated Diseases
Funder
National Health and Medical Research Council
Funding Amount
$750,336.00
Summary
Gastric cancer mainly results from chronic inflammation (gastritis) caused by the stomach-dwelling bacterium, Helicobacter pylori. We have identified a potassium channel which our data suggest could be a new therapeutic target for protecting against gastric cancer caused by H. pylori infection. This project will test the role of this channel in H. pylori gastritis and see whether drugs that target this channel can protect mice against H. pylori-associated disease.
Novel Antimicrobials That Target Enteropathogenic Escherichia Coli
Funder
National Health and Medical Research Council
Funding Amount
$617,525.00
Summary
Enteropathogenic E. coli (EPEC) cause acute and persistent diarrhoea which affect the health of millions of children each year. In this study, we will use the state-of-the-art-technology to identify small synthetic-compounds that inhibit the virulence of EPEC without affecting normal microflora. Molecular, cellular and animal tests of the compounds will be carried out to determine whether they can be used to treat gastrointestinal infection by EPEC.
Anti-sporulation Strategies For Clostridium Difficile Infections
Funder
National Health and Medical Research Council
Funding Amount
$651,559.00
Summary
Hospital-acquired infections with the bacterium Clostridium difficile are a major global public health concern with highly virulent isolates emerging overseas in 2002 and in Australia in 2010. These strains have spread through our hospitals and are also found in the community. This project will increase our understanding of how these strains spread and will provide knowledge that is critical for developing improved strategies for preventing these infections.
Structure And Functional Characterisation Of AB5 Toxins
Funder
National Health and Medical Research Council
Funding Amount
$574,890.00
Summary
The proposed research program, using a combination of structure and biochemical analyses, will provide insight into two novel AB5 toxins that represent a medically important family of proteins. This study will not only improve our fundamental understanding of AB5 toxins action but could lead to rational design of antimicrobials.
Functional Characterisation Of The SseK/NleB Family Of Type III Secreted Effectors In Salmonella And E. Coli
Funder
National Health and Medical Research Council
Funding Amount
$510,183.00
Summary
Salmonella and E. coli cause enteritis and diarrhoea in a large proportion of the world's population including Australia. Certain strains of Salmonella also cause a more serious disease called typhoid fever. Together, diseases caused by Salmonella and E. coli are a major cause of illness and death. In order to cause disease Salmonella and E. coli use a specialised apparatus that functions like a needle and syringe to inject Salmonella proteins into human cells. These proteins that are injected i ....Salmonella and E. coli cause enteritis and diarrhoea in a large proportion of the world's population including Australia. Certain strains of Salmonella also cause a more serious disease called typhoid fever. Together, diseases caused by Salmonella and E. coli are a major cause of illness and death. In order to cause disease Salmonella and E. coli use a specialised apparatus that functions like a needle and syringe to inject Salmonella proteins into human cells. These proteins that are injected into human cells actively reprogram human cells to benefit the disease causing bacteria. We have recently discovered a new family of injected proteins and we aim to determine how these new proteins reprogram human cells and what this contributes to diarrhoea and typhoid fever. This information may lead to the development of more effective treatments for these important diseases.Read moreRead less
Worldwide Molecular Analysis Of Streptococcus Pyogenes Scarlet Fever Outbreaks
Funder
National Health and Medical Research Council
Funding Amount
$544,041.00
Summary
The microorganism group A Streptococcus (also called GAS or Streptococcus pyogenes) ranks among the top 10 infectious disease killers of humans. Recently, outbreaks of scarlet fever have occurred in both Asia and the United Kingdom, placing a serious strain on health systems. The reasons underlying these outbreaks remain unknown. Our team will lead the global effort to characterise this rise in scarlet fever, and provide recommendations and solutions to health professionals.