Flow cytometry-based assessment of antibody function against malaria pre-erythrocytic infection

Abstract

The development of new interventional strategies against pre-erythrocytic malaria is hampered by the lack of standardized approaches to assess inhibition of sporozoite infection of hepatocytes. The following methodology, based on fl ow cytometry, can be used to quantitatively assess P. falciparum sporozoite infection in vitro in medium throughput. In addition to assessing the effi cacy of antibodies, this assay has a wide variety of applications for investigating basic science questions about the malaria liver stage. This approach is easily applied in a variety of laboratory settings, assesses the functionality of antibody responses against malaria sporozoites, and can be adapted for the limited quantities of sample which are typically available from clinical investigations.