Analysis by flow cytometry of α2-macroglobulin and nonimmune IgM-binding to Plasmodium falciparum-infected erythrocytes

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Abstract

Several members of the Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) family can bind human serum proteins such as IgM and α2-macroglobulin (α2M). This binding seems to play a role in pathogenesis and immune evasion by improving the avidity of PfEMP1-mediated binding to erythrocyte receptors and/or by masking antibody epitopes in PfEMP1. In this protocol, we describe a flow cytometry-based protocol to evaluate IgM- and α2M-binding to intact and unfixed mature-stage IEs. The method can be used for laboratory clones and field isolates.

Original languageEnglish
Title of host publicationMalaria Immunology : Targeting the Surface of Infected Erythrocytes
Number of pages10
Volume2470
PublisherHumana Press
Publication date2022
Pages435-444
ISBN (Print)978-1-0716-2188-2
ISBN (Electronic)978-1-0716-2189-9
DOIs
Publication statusPublished - 2022
SeriesMethods in molecular biology (Clifton, N.J.)
ISSN1064-3745

Bibliographical note

© 2022. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature.

Keywords

  • Antibodies, Protozoan
  • Erythrocytes/metabolism
  • Female
  • Flow Cytometry
  • Humans
  • Immunoglobulin M
  • Malaria, Falciparum
  • Plasmodium falciparum/metabolism
  • Pregnancy
  • Pregnancy-Associated alpha 2-Macroglobulins/metabolism
  • Protozoan Proteins/metabolism

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