Plasmodium falciparum digestive vacuole (DV)

The Plasmodium falciparum digestive vacuole is a lysosome-like acidic organelle that is essential for parasite survival within human erythrocytes. Through endocytosis of host cell hemoglobin, the parasite delivers it to the DV, where sequential action of proteases (mainly plasmepsins and falcipains) breaks it down to small peptides and amino acids, which are then exported for parasite use. The DV environment also enables detoxification of heme by crystallizing it into hemozoin. The DV membrane contains multiple transporters (PfCRT, PfMDR1, PfAAT1) and an identified large conductance anion channel (BVAC), playing roles in solute movement, drug resistance, and vacuole homeostasis. The DV is the main site of action for antimalarial drugs like chloroquine and artemisinin; resistance mechanisms often involve mutations in vacuolar transporters. The organelle’s critical functions in nutrient acquisition and detoxification make it a central therapeutic target in malaria drug development.

Other names

food vacuoleDV

Inhibition of hemozoin formation (chloroquine) - Free radical generation leading to organelle damage (artemisinin) - Protease inhibition—blocking hemoglobin digestion (plasmepsin and falcipain inhibitors) - Disruption of ion homeostasis or membrane transport (targeting anion channels or transporters)