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Updated: Oct 26, 2025
Ookluc: A Plasmodium berghei Line for Identifying Transmission-blocking Compounds
Published on: July 11, 2025
Illuminating Plasmodium invasion by lattice-light-sheet microscopy
Markus Ganter1, Friedrich Frischknecht2
1Parasitology, Center for Infectious Diseases, Heidelberg University Medical School, Im Neuenheimer Feld 324, 69120 Heidelberg, Germany.
Abstract:
Plasmodium merozoites invade erythrocytes in a stepwise manner through ligand binding, calcium signaling, and membrane deformation. Using a recently developed light-sheet microscope, Geoghegan et al. investigated invasion with unprecedented temporal resolution. Their spectacular footage revealed roles for host cell cholesterol and pore formation at the parasite-host cell interface.
Insights
Researchers visualized Plasmodium merozoite invasion of red blood cells using advanced light-sheet microscopy. The study uncovered critical roles for host cell cholesterol and pore formation during this complex parasitic process.
Area of Science:
- Cell Biology
- Parasitology
- Microscopy
Background:
- Plasmodium merozoites infect red blood cells, a crucial step in malaria transmission.
- Merozoite invasion involves sequential events including ligand binding, calcium signaling, and membrane dynamics.
Purpose of the Study:
- To investigate the spatiotemporal dynamics of Plasmodium merozoite invasion into erythrocytes.
- To elucidate the roles of host cell factors and parasite-host interactions during invasion.
Main Methods:
- Utilized a novel light-sheet fluorescence microscopy technique for high-resolution, high-speed imaging.
- Employed advanced imaging analysis to track invasion events in real-time.
Main Results:
- Observed the complete invasion process with unprecedented temporal resolution.
- Identified a significant role for host erythrocyte cholesterol in facilitating invasion.
- Revealed the formation of a transient pore at the parasite-erythrocyte interface.
Conclusions:
- Host cell cholesterol is essential for efficient Plasmodium merozoite invasion.
- Pore formation is a key event during invasion, enabling parasite entry.
- Light-sheet microscopy provides powerful insights into host-pathogen interactions at the molecular level.
