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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Transl+Med 2021 ; 13 (607): ä Nephropedia Template TP
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Protective antibodies elicited by SARS-CoV-2 spike protein vaccination are boosted in the lung after challenge in nonhuman primates #MMPMID34315825
Francica JR; Flynn BJ; Foulds KE; Noe AT; Werner AP; Moore IN; Gagne M; Johnston TS; Tucker C; Davis RL; Flach B; O'Connell S; Andrew SF; Lamb E; Flebbe DR; Nurmukhambetova ST; Donaldson MM; Todd JM; Zhu AL; Atyeo C; Fischinger S; Gorman MJ; Shin S; Edara VV; Floyd K; Lai L; Boyoglu-Barnum S; Van De Wetering R; Tylor A; McCarthy E; Lecouturier V; Ruiz S; Berry C; Tibbitts T; Andersen H; Cook A; Dodson A; Pessaint L; Van Ry A; Koutsoukos M; Gutzeit C; Teng IT; Zhou T; Li D; Haynes BF; Kwong PD; McDermott A; Lewis MG; Fu TM; Chicz R; van der Most R; Corbett KS; Suthar MS; Alter G; Roederer M; Sullivan NJ; Douek DC; Graham BS; Casimiro D; Seder RA
Sci Transl Med 2021[Aug]; 13 (607): ä PMID34315825show ga
Adjuvanted soluble protein vaccines have been used extensively in humans for protection against various viral infections based on their robust induction of antibody responses. Here, soluble prefusion-stabilized spike protein trimers (preS dTM) from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were formulated with the adjuvant AS03 and administered twice to nonhuman primates (NHPs). Binding and functional neutralization assays and systems serology revealed that the vaccinated NHP developed AS03-dependent multifunctional humoral responses that targeted distinct domains of the spike protein and bound to a variety of Fc receptors mediating immune cell effector functions in vitro. The neutralizing 50% inhibitory concentration titers for pseudovirus and live SARS-CoV-2 were higher than titers for a panel of human convalescent serum samples. NHPs were challenged intranasally and intratracheally with a high dose (3 x 10(6) plaque forming units) of SARS-CoV-2 (USA-WA1/2020 isolate). Two days after challenge, vaccinated NHPs showed rapid control of viral replication in both the upper and lower airways. Vaccinated NHPs also had increased spike protein-specific immunoglobulin G (IgG) antibody responses in the lung as early as 2 days after challenge. Moreover, passive transfer of vaccine-induced IgG to hamsters mediated protection from subsequent SARS-CoV-2 challenge. These data show that antibodies induced by the AS03-adjuvanted preS dTM vaccine were sufficient to mediate protection against SARS-CoV-2 in NHPs and that rapid anamnestic antibody responses in the lung may be a key mechanism for protection.