Conditional expression of PfAP2-G for controlled massive sexual conversion in Plasmodium falciparum

Area of Science:

• Malariology
• Parasitology
• Molecular Biology

Background:

• Malaria transmission depends on the conversion of asexual Plasmodium falciparum parasites into sexual gametocytes.
• Early sexual development stages are difficult to study due to morphological similarity with asexual forms and low conversion rates.

Purpose of the Study:

• To establish a system for controlled sexual conversion in Plasmodium falciparum.
• To enable detailed characterization of early sexual parasite stages.

Main Methods:

• Conditional expression of the PfAP2-G transcription factor to induce sexual conversion.
• Transcriptomic and phenotypic characterization of sexually committed and early sexual stages.

Main Results:

• Achieved ~90% conversion to sexual forms upon induction.
• Identified down-regulation of solute transport genes during sexual commitment.
• Characterized transcriptomic and phenotypic profiles of early sexual stages.

Conclusions:

• The inducible system facilitates the study of poorly understood early sexual stages of Plasmodium falciparum.
• This advancement will support multiomic characterization and drug susceptibility assays for malaria research.