Target identification and validation of novel antimalarials.

Area of Science:

• Medicinal Chemistry
• Parasitology
• Drug Discovery

Background:

• Emergence of drug-resistant malaria parasites necessitates novel antimalarial drugs.
• Current malaria treatments are threatened by widespread parasite resistance.
• Asexual intraerythrocytic stage cell-based assays are vital for identifying new antimalarials.

Purpose of the Study:

• To review methodologies for determining the mode of action of novel antimalarial compounds.
• To address the challenge of assigning targets to newly discovered antimalarial scaffolds.
• To facilitate the development of new malaria treatments.

Main Methods:

• High-throughput screening of Plasmodium falciparum cultures.
• Cell-based assays to identify antimalarial activity.
• Review of techniques for target identification and mode of action determination.

Main Results:

• Identification of over 10,000 novel antimalarial compounds.
• Discovery of unique chemical scaffolds lacking cross-resistance with existing drugs.
• Recognition that most novel compounds have poorly defined modes of action.

Conclusions:

• Novel antimalarial scaffolds are likely to reveal new drug targets.
• Developing methods to assign targets is essential for advancing new antimalarials.
• Continued research into compound modes of action is critical for combating malaria resistance.