Antibodies in children with malaria to PfEMP1, RIFIN and SURFIN expressed at the Plasmodium falciparum parasitized red blood cell surface

Maria Del Pilar Quintana, Jun Hong Ch'ng, Kirsten Moll, Arash Zandian, Peter Nilsson, Zulkarnain Md Idris, Somporn Saiwaew, Ulrika Qundos, Mats Wahlgren

Research output: Contribution to journalArticle

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Abstract

Naturally acquired antibodies to proteins expressed on the Plasmodium falciparum parasitized red blood cell (pRBC) surface steer the course of a malaria infection by reducing sequestration and stimulating phagocytosis of pRBC. Here we have studied a selection of proteins representing three different parasite gene families employing a well-characterized parasite with a severe malaria phenotype (FCR3S1.2). The presence of naturally acquired antibodies, impact on rosetting rate, surface reactivity and opsonization for phagocytosis in relation to different blood groups of the ABO system were assessed in a set of sera from children with mild or complicated malaria from an endemic area. We show that the naturally acquired immune responses, developed during malaria natural infection, have limited access to the pRBCs inside a blood group A rosette. The data also indicate that SURFIN4.2 may have a function at the pRBC surface, particularly during rosette formation, this role however needs to be further validated. Our results also indicate epitopes differentially recognized by rosette-disrupting antibodies on a peptide array. Antibodies towards parasite-derived proteins such as PfEMP1, RIFIN and SURFIN in combination with host factors, essentially the ABO blood group of a malaria patient, are suggested to determine the outcome of a malaria infection.

Original languageEnglish
Article number3295
JournalScientific Reports
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Dec 2018

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Plasmodium falciparum
Malaria
Erythrocytes
Antibodies
ABO Blood-Group System
Parasites
Blood Group Antigens
Phagocytosis
Infection
Rosette Formation
Proteins
Epitopes
Phenotype
Peptides
Serum
Genes

ASJC Scopus subject areas

  • General

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Antibodies in children with malaria to PfEMP1, RIFIN and SURFIN expressed at the Plasmodium falciparum parasitized red blood cell surface. / Quintana, Maria Del Pilar; Ch'ng, Jun Hong; Moll, Kirsten; Zandian, Arash; Nilsson, Peter; Md Idris, Zulkarnain; Saiwaew, Somporn; Qundos, Ulrika; Wahlgren, Mats.

In: Scientific Reports, Vol. 8, No. 1, 3295, 01.12.2018.

Research output: Contribution to journalArticle

Quintana, Maria Del Pilar ; Ch'ng, Jun Hong ; Moll, Kirsten ; Zandian, Arash ; Nilsson, Peter ; Md Idris, Zulkarnain ; Saiwaew, Somporn ; Qundos, Ulrika ; Wahlgren, Mats. / Antibodies in children with malaria to PfEMP1, RIFIN and SURFIN expressed at the Plasmodium falciparum parasitized red blood cell surface. In: Scientific Reports. 2018 ; Vol. 8, No. 1.
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