Multi-functional antibodies are induced by the RTS,S malaria vaccine and associated with protection in a phase I/IIa trial.
Liriye Kurtovic, Tanmaya Atre, Gaoqian Feng, Bruce D Wines, Jo-Anne Chan, Michelle J Boyle, Damien R Drew, P Mark Hogarth, Freya JI Fowkes, Elke S Bergmann-Leitner, James G Beeson
J Infect Dis | Published : 2020
BACKGROUND: RTS,S is the leading malaria vaccine candidate, but only confers partial efficacy against malaria in children. RTS,S is based on the major Plasmodium falciparum sporozoite surface antigen, circumsporozoite protein (CSP). The induction of anti-CSP antibodies is important for protection, however, it is unclear how these protective antibodies function. METHODS: We quantified the induction of functional anti-CSP antibody responses in healthy malaria-naïve adults (N=45) vaccinated with RTS,S/AS01. This included the ability to mediate effector functions via the fragment crystallizable (Fc) region, such as interacting with human complement proteins and Fcγ-receptors (FcγRs) that are exp..View full abstract