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Updated: Jun 12, 2025
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Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles
Published on: January 25, 2017
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Spectral flow cytometry for detecting DNA cargo in malaria parasite-derived extracellular vesicles
Ewa Kozela1, Ekaterina Petrovich-Kopitman2, Yuval Berger1
1Department of Biomolecular Sciences, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel.
The Journal of Biological Chemistry
|April 8, 2025
Summary
Extracellular vesicles (EVs) from malaria parasites communicate with host cells. Spectral flow cytometry offers a new, antibody-free method to detect DNA-carrying EVs from Plasmodium falciparum.
Area of Science:
- Cell biology
- Parasitology
- Immunology
Background:
- Extracellular vesicles (EVs) mediate intercellular communication across biological kingdoms.
- The malaria parasite Plasmodium falciparum (Pf) uses EVs to interact with the human host.
- Research on Pf-EVs is limited by tool availability and lack of specific antibodies.
Purpose of the Study:
- To demonstrate spectral flow cytometry for detecting EVs from Pf-infected red blood cells.
- To characterize parasitic-derived EVs using a non-antibody staining approach.
- To quantify DNA-carrying EVs in different Pf blood stages.
Main Methods:
- Isolation of EVs from Pf-infected red blood cells.
- Spectral flow cytometry utilizing membrane lipid and DNA staining.
- Quantitative analysis of EV subpopulations based on cargo.
Main Results:
- Robust detection of EVs secreted by Pf-infected cells.
- Identification of a subpopulation of parasitic EVs enriched in DNA.
- Quantitative measurement of DNA-carrying EVs from ring and trophozoite stages.
Conclusions:
- Spectral flow cytometry is a powerful, antibody-free tool for studying pathogenic EVs.
- This method enables monitoring of dynamic changes in nucleic acid cargo within EVs.
- The findings advance the understanding of malaria parasite communication and host interaction.
