Can any lessons be learned from the ambiguous glycan binding of PfEMP1 domains?

Trends Parasitol. 2010 May;26(5):230-5. doi: 10.1016/j.pt.2010.02.002. Epub 2010 Feb 26.

Abstract

Pregnancy-associated malaria (PAM) is caused by Plasmodium falciparum-infected erythrocytes (IEs) accumulating in the placenta and has dire consequences for both mother and child. The multi-domain antigen VAR2CSA confers specific adhesion of IEs to chondroitin sulphate A (CSA) in the placenta, and is the leading PAM vaccine candidate. Recent data from different laboratories show that the binding properties of individual VAR2CSA domains do not reflect the native CSA-specific adhesion of IEs, which questions the relevance of the information obtained from single domain binding assays and co-crystallization experiments. Here, we discuss the implications of these findings for VAR2CSA vaccine development and highlight the need for studying the native structure of this protein.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Antigens, Protozoan / chemistry
  • Antigens, Protozoan / metabolism
  • Binding Sites
  • Chondroitin Sulfates / metabolism
  • Erythrocytes / metabolism
  • Erythrocytes / parasitology
  • Female
  • Humans
  • Malaria Vaccines*
  • Plasmodium falciparum / physiology
  • Polysaccharides / metabolism*
  • Pregnancy
  • Pregnancy Complications, Parasitic / prevention & control
  • Protein Binding
  • Protein Structure, Tertiary
  • Protozoan Proteins / chemistry
  • Protozoan Proteins / metabolism*

Substances

  • Antigens, Protozoan
  • Malaria Vaccines
  • Polysaccharides
  • Protozoan Proteins
  • VAR2CSA protein, Plasmodium falciparum
  • erythrocyte membrane protein 1, Plasmodium falciparum
  • Chondroitin Sulfates