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MOA

Drug resistance and mechanism of action studies

Past project

Drugs are the main weapons used to combat malaria infection, but parasites are becoming resistant and new medicines and drug targets are needed. Through a broad range of biochemical, cell biology and molecular biology methods we are deciphering how different novel antimalarials work. We work with medicinal chemists who improve the potency and specificity of a range of novel and repurposed drugs, to develop new antimalarials that are effective against already multi-drug resistant parasites.

Objective

We seek to repurpose commercial compounds for use against malaria parasites and investigate how parasites become resistant to current antimalarial compounds. 

Timeline

2015–completed.

Approach

We use state-of-the-art genetic modification tools, including CRISPR/Cas9, alongside whole genome sequencing and a range of biochemical and plate-based assays to decipher how antimalarial compounds we have discovered act to kill the parasites.

Community impact

Better, safer, and cheaper antimalarial drugs would benefit endemic communities around the world and could accelerate malaria elimination. The research will also provide new knowledge about parasite biology that could inform future treatment options.

Research and reports

09 Jun 2023

Protein disulfide isomerases - a way to tackle malaria.

Trends in Parasitology

Angrisano F, Ford A, Blagborough AM, Bullen HE

21 Sep 2021

Property activity refinement of 2-anilino 4-amino substituted quinazolines as antimalarials with fast acting asexual parasite activity.

Bioorganic chemistry

Ashton TD, Ngo A, Favuzza P, Bullen HE, Gancheva MR, Romeo O, Parkyn Schneider M, Nguyen N, Steel RWJ, Duffy S

26 Feb 2019

Evaluation of 4-Amino 2-Anilinoquinazolines against Plasmodium and Other Apicomplexan Parasites In Vitro and in a P. falciparum Humanized NOD- scid IL2Rγnull Mouse Model of Malaria.

Gilson PR, Nguyen W, Poole WA, Teixeira JE, Thompson JK, Guo K, Stewart RJ, Ashton TD, White KL, Sanz LM

16 Jul 2019

A 4-cyano-3-methylisoquinoline inhibitor of Plasmodium falciparum growth targets the sodium efflux pump PfATP4.

Scientific reports

Gilson PR, Kumarasingha R, Thompson J, Zhang X, Penington JS, Kalhor R, Bullen HE, Lehane AM, Dans MG, de Koning-Ward TF

26 Jan 2017

Optimization of 2-Anilino 4-Amino Substituted Quinazolines into Potent Antimalarial Agents with Oral in Vivo Activity.

Journal of medicinal chemistry

Gilson PR, Tan C, Jarman KE, Lowes KN, Curtis JM, Nguyen W, Di Rago AE, Bullen HE, Prinz B, Duffy S

13 Apr 2023

Sulfonylpiperazine compounds prevent Plasmodium falciparum invasion of red blood cells through interference with actin-1/profilin dynamics.

PLoS biology

Dans MG, Piirainen H, Nguyen W, Khurana S, Mehra S, Razook Z, Geoghegan ND, Dawson AT, Das S, Parkyn Schneider M

28 Aug 2023

A Pyridyl-Furan Series Developed from the Open Global Health Library Block Red Blood Cell Invasion and Protein Trafficking in Plasmodium falciparum through Potential Inhibition of the Parasite's PI4KIIIB Enzyme.

ACS infectious diseases

Ling DB, Nguyen W, Looker O, Razook Z, McCann K, Barry AE, Scheurer C, Wittlin S, Famodimu MT, Delves MJ

22 Nov 2016

Identification of inhibitors that dually target the new permeability pathway and dihydroorotate dehydrogenase in the blood stage of Plasmodium falciparum.

Scientific reports

Dickerman BK, Elsworth B, Cobbold SA, Nie CQ, McConville MJ, Crabb BS, Gilson PR

04 Oct 2016

Hierarchical phosphorylation of apical membrane antigen 1 is required for efficient red blood cell invasion by malaria parasites.

Scientific reports

Prinz B, Harvey KL, Wilcke L, Ruch U, Engelberg K, Biller L, Lucet I, Erkelenz S, Heincke D, Spielmann T

30 Nov 2022

PfATP4 inhibitors in the Medicines for Malaria Venture Malaria Box and Pathogen Box block the schizont-to-ring transition by inhibiting egress rather than invasion.

Frontiers in cellular and infection microbiology

Barnes CBG, Dans MG, Jonsdottir TK, Crabb BS, Gilson PR

Funding Partners

Funding partners

National Health and Medical Research Council (NHMRC)

Collaborators

  • WEHI
  • Deakin University
  • Monash University

Project team

Dr Hayley Bullen

Dr Hayley Bullen

Co-Head, Malaria Virulence and Drug Discovery Group
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Claudia Barnes

Claudia Barnes

Research Assistant
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Professor Brendan Crabb AC

Professor Brendan Crabb AC

Director and CEO; Chair Australian Global Health Alliance and Chair Pacific Friends of Global Health
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Associate Professor Paul Gilson

Associate Professor Paul Gilson

Deputy Discipline Head, Life Sciences; Co-Head, Malaria Virulence and Drug Discovery Group; Head of Burnet Cell Imaging Facility
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Dr Oliver Looker

Dr Oliver Looker

Postdoctoral Scientist
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Professor Alyssa Barry

Professor Alyssa Barry

Honorary Principal Research Fellow
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Molly Schneider

Molly Schneider

Research Assistant
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Brad Sleebs

Brad Sleebs

Collaborator
WEHI
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Tania de Koning-Ward

Tania de Koning-Ward

Collaborator
Deakin University
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Darren Creek

Darren Creek

Collaborator
Monash University
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Ghizal Siddiqui

Ghizal Siddiqui

Collaborator
Monash University
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Dr Hayley Bullen

Dr Hayley Bullen

Co-Head, Malaria Virulence and Drug Discovery Group
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