|
Pentavalent HIV-1 vaccine protects against simian-human immunodeficiency virus challenge. Bradley T1, Pollara J1, Santra S2, Vandergrift N1, Pittala S3, Bailey-Kellogg C3, Shen X1, Parks R1, Goodman D1, Eaton A1, Balachandran H2, Mach LV2, Saunders KO1, Weiner JA3, Scearce R1, Sutherland LL1, Phogat S4, Tartaglia J4, Reed SG5, Hu SL6, Theis JF7, Pinter A7, Montefiori DC1, Kepler TB8, Peachman KK9,10, Rao M9, Michael NL9, Suscovich TJ11, Alter G11, Ackerman ME3, Moody MA1, Liao HX1, Tomaras G1, Ferrari G1, Korber BT12, Haynes BF1. The RV144 Thai trial HIV-1 vaccine of recombinant poxvirus (ALVAC) and recombinant HIV-1 gp120 subtype B/subtype E (B/E) proteins demonstrated 31% vaccine efficacy. Here we design an ALVAC/Pentavalent B/E/E/E/E vaccine to increase the diversity of gp120 motifs in the immunogen to elicit a broader antibody response and enhance protection. We find that immunization of rhesus macaques with the pentavalent vaccine results in protection of 55% of pentavalent-vaccine-immunized macaques from simian-human immunodeficiency virus (SHIV) challenge. Systems serology of the antibody responses identifies plasma antibody binding to HIV-infected cells, peak ADCC antibody titres, NK cell-mediated ADCC and antibody-mediated activation of MIP-1β in NK cells as the four immunological parameters that best predict decreased infection risk that are improved by the pentavalent vaccine. Thus inclusion of additional gp120 immunogens to a pox-prime/protein boost regimen can augment antibody responses and enhance protection from a SHIV challenge in rhesus macaques. https://www.ncbi.nlm.nih.gov/pubmed/28593989 |
GMT+8, 2024-12-23 12:59 , Processed in 0.074343 second(s), 31 queries .
Powered by Discuz! X3.2
© 2001-2013 Comsenz Inc.