An adaptable, fit-for-purpose screening approach with high-throughput capability to determine speed of action and stage specificity of anti-malarial compounds
File version
Version of Record (VoR)
Author(s)
Sleebs, Brad E
Avery, Vicky M
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Odom John, Audrey
Date
Size
File type(s)
Location
Abstract
A revamped in vitro compound identification and activity profiling approach is required to meet the large unmet need for new anti-malarial drugs to combat parasite drug resistance. Although compound hit identification utilizing high-throughput screening of large compound libraries is well established, the ability to rapidly prioritize such large numbers for further development is limited. Determining the speed of action of anti-malarial drug candidates is a vital component of malaria drug discovery, which currently occurs predominantly in lead optimization and development. This is due in part to the capacity of current methods which have low throughput due to the complexity and labor intensity of the approaches. Here, we provide an adaptable screening paradigm utilizing automated high content imaging, including the development of an automated schizont maturation assay, which collectively can identify anti-malarial compounds, classify activity into fast and slow acting, and provide an indication of the parasite stage specificity, with high-throughput capability. By frontloading these critical biological parameters much earlier in the drug discovery pipeline, it has the potential to reduce lead compound attrition rates later in the development process. The capability of the approach in its alternative formats is demonstrated using three Medicines for Malaria Venture open access compound “boxes,” namely Pathogen Box (malaria set—125 compounds), Global Health Priority Box [Malaria Box 2 (80 compounds) and zoonotic neglected diseases (80 compounds)], and the Pandemic Response Box (400 compounds). From a total of 685 compounds tested, 79 were identified as having fast ring-stage-specific activity comparable to that of artemisinin and therefore of high priority for further consideration and development.
Journal Title
Antimicrobial Agents and Chemotherapy
Conference Title
Book Title
Edition
Volume
Issue
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
© 2024 Duffy et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.
Item Access Status
Note
This publication has been entered in Griffith Research Online as an advance online version.
Access the data
Related item(s)
Subject
Medical virology
Microbiology
Medical microbiology
Pharmacology and pharmaceutical sciences
Persistent link to this record
Citation
Duffy, S; Sleebs, BE; Avery, VM, An adaptable, fit-for-purpose screening approach with high-throughput capability to determine speed of action and stage specificity of anti-malarial compounds, Antimicrobial Agents and Chemotherapy, 2024, pp. e00746-24