%0 Journal Article
%T Elicitation of Both Anti HIV-1 Env Humoral and Cellular Immunities by Replicating Vaccinia Prime Sendai Virus Boost Regimen and Boosting by CD40Lm
%A Xianfeng Zhang
%A Tomoyoshi Sobue
%A Mao Isshiki
%A Shun-ichi Makino
%A Makoto Inoue
%A Kazunori Kato
%A Tatsuo Shioda
%A Takashi Ohashi
%A Hirotaka Sato
%A Jun Komano
%A Hideji Hanabusa
%A Hisatoshi Shida
%J PLOS ONE
%D 2012
%I Public Library of Science (PLoS)
%R 10.1371/journal.pone.0051633
%X For protection from HIV-1 infection, a vaccine should elicit both humoral and cell-mediated immune responses. A novel vaccine regimen and adjuvant that induce high levels of HIV-1 Env-specific T cell and antibody (Ab) responses was developed in this study. The prime-boost regimen that used combinations of replication-competent vaccinia LC16m8ĶĪ (m8ĶĪ) and Sendai virus (SeV) vectors expressing HIV-1 Env efficiently produced both Env-specific CD8+ T cells and anti-Env antibodies, including neutralizing antibodies (nAbs). These results sharply contrast with vaccine regimens that prime with an Env expressing plasmid and boost with the m8ĶĪ or SeV vector that mainly elicited cellular immunities. Moreover, co-priming with combinations of m8ĶĪs expressing Env or a membrane-bound human CD40 ligand mutant (CD40Lm) enhanced Env-specific CD8+ T cell production, but not anti-Env antibody production. In contrast, priming with an m8ĶĪ that coexpresses CD40Lm and Env elicited more anti-Env Abs with higher avidity, but did not promote T cell responses. These results suggest that the m8ĶĪ prime/SeV boost regimen in conjunction with CD40Lm expression could be used as an immunization platform for driving both potent cellular and humoral immunities against pathogens such as HIV-1.
%U http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0051633