The plasmodium falciparum-specific human memory b cell compartment expands gradually with repeated malaria infections

Greta E. Weiss, Boubacar Traore, Kassoum Kayentao, Aissata Ongoiba, Safiatou Doumbo, Didier Doumtabe, Younoussou Kone, Seydou Dia, Agnes Guindo, Abdramane Traore, Chiung Yu Huang, Kazutoyo Miura, Marko Mircetic, Shanping Li, Amy Baughman, David L. Narum, Louis H. Miller, Ogobara K. Doumbo, Susan K. Pierce, Peter D. Crompton

Research output: Contribution to journalArticle

Abstract

Immunity to Plasmodium falciparum (Pf) malaria is only acquired after years of repeated infections and wanes rapidly without ongoing parasite exposure. Antibodies are central to malaria immunity, yet little is known about the B-cell biology that underlies the inefficient acquisition of Pf specific humoral immunity. This year-long prospective study in Mali of 185 individuals aged 2 to 25 years shows that Pf-specific memory B cells and antibodies are acquired gradually in a stepwise fashion over years of repeated Pf exposure. Both Pf-specific memory B cells and antibody titers increased after acute malaria and then, after six months of decreased Pf exposure, contracted to a point slightly higher than pre infection levels. This inefficient, stepwise expansion of both the Pf-specific memory B-cell and long-lived antibody compartments depends on Pf exposure rather than age, based on the comparator response to tetanus vaccination that was efficient and stable. These observations lend new insights into the cellular basis of the delayed acquisition of malaria immunity.

Original languageEnglish (US)
Pages (from-to)1-13
Number of pages13
JournalPLoS pathogens
Volume6
Issue number5
DOIs
StatePublished - May 1 2010

ASJC Scopus subject areas

  • Parasitology
  • Microbiology
  • Immunology
  • Molecular Biology
  • Genetics
  • Virology

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    Weiss, G. E., Traore, B., Kayentao, K., Ongoiba, A., Doumbo, S., Doumtabe, D., Kone, Y., Dia, S., Guindo, A., Traore, A., Huang, C. Y., Miura, K., Mircetic, M., Li, S., Baughman, A., Narum, D. L., Miller, L. H., Doumbo, O. K., Pierce, S. K., & Crompton, P. D. (2010). The plasmodium falciparum-specific human memory b cell compartment expands gradually with repeated malaria infections. PLoS pathogens, 6(5), 1-13. https://doi.org/10.1371/journal.ppat.1000912