Plasmodium falciparum variant STEVOR antigens are expressed in merozoites and possibly associated with erythrocyte invasion
2008

STEVOR Antigens in Malaria and Their Role in Erythrocyte Invasion

publication Evidence: moderate

Author Information

Author(s): Ayman Khattab, Insa Bonow, Nadine Schreiber, Michaela Petter, Christel Schmetz, Mo-Quen Klinkert

Primary Institution: Bernhard-Nocht Institute for Tropical Medicine, Hamburg, Germany

Hypothesis

Are STEVOR proteins involved in the invasion of erythrocytes by Plasmodium falciparum merozoites?

Conclusion

STEVOR proteins are localized on the merozoite surface and may play a role in erythrocyte invasion, although their exact function remains speculative.

Supporting Evidence

  • STEVOR proteins were found on the merozoite surface and in rhoptries.
  • Immunofluorescence analysis showed STEVORs during erythrocyte invasion.
  • The anti-STEVOR antibody did not inhibit merozoite invasion.

Takeaway

STEVOR proteins are found on the surface of malaria parasites and might help them stick to red blood cells, but we don't know for sure how they work.

Methodology

Immunoblotting, immunofluorescence assays, and immunoelectron microscopy were used to study STEVOR protein expression and localization.

Limitations

The role of STEVORs in erythrocyte invasion remains speculative and was not conclusively demonstrated.

Digital Object Identifier (DOI)

10.1186/1475-2875-7-137

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