Checks and balances? DNA replication and the cell cycle in Plasmodium

Area of Science:

• Parasitology
• Cell Biology
• Drug Discovery

Background:

• The malaria parasite Plasmodium's life-cycle is not fully understood, hindering disease control efforts.
• Current antimalarial drug development relies on phenotypic screens, which are limited by compound library exhaustion.
• Directed drug development requires a deeper understanding of Plasmodium's fundamental biology.

Purpose of the Study:

• To review the unusual cell cycles of Plasmodium, identifying potential novel drug targets.
• To collate current knowledge on Plasmodium cell cycle events and regulators throughout its life-cycle.
• To explore Plasmodium cell cycle peculiarities as a potential drug target.

Main Methods:

• Literature review focusing on Plasmodium cell cycle biology.
• Comparison of Plasmodium cell cycle with model organisms and other apicomplexan parasites.
• Discussion of existing and emerging technologies for studying the Plasmodium cell cycle.

Main Results:

• Plasmodium replicates via syncytial modes (schizogony, sporogony), differing from conventional binary fission.
• Key differences in cell cycle regulation exist between Plasmodium, model organisms, and other apicomplexans.
• The DNA replication and cell cycle machinery represent a promising avenue for antimalarial drug development.

Conclusions:

• Elucidating Plasmodium's unique cell cycle is crucial for developing new antimalarial therapies.
• Further research into Plasmodium cell cycle regulation is needed to identify novel drug targets.
• Targeting Plasmodium's cell cycle offers a promising strategy to combat malaria.