An HIV-1 vaccine based on bacterium-like particles elicits Env-specific mucosal immune responses.

Journal Article (Journal Article)

Although many vaccines have been designed to induce effective mucosal immune responses against HIV-1, designing an effective HIV-1 vaccine remains a challenge. Bacterium-like particles (BLPs) are a new type of vector used to induce mucosal immune responses, and have already been used for some vaccines against respiratory tract viruses. In this study, we designed a mucosal vaccine against HIV-1 based on BLPs. The vaccine was used to immunize both mice and guinea pigs via intramuscular (i.m.) injection or intranasal (i.n.) drip. We found that gp120 trimers bound to BLPs delivered via i.n. drip successfully induced Env-specific secretory IgA (sIgA) at mucosal sites in mice. Furthermore, nasal washes from guinea pigs immunized via i.n. drip showed neutralizing activity against HIV-1 tier 1 pseudoviruses. Thus, gp120 trimers bound to BLPs may be an effective vaccine strategy against HIV-1.

Full Text

Duke Authors

Cited Authors

  • Bi, J; Li, F; Zhang, M; Wang, H; Lu, J; Zhang, Y; Ling, H; Wang, J; Gao, F; Kong, W; Yu, B; Yu, X

Published Date

  • June 2020

Published In

Volume / Issue

  • 222 /

Start / End Page

  • 29 - 39

PubMed ID

  • 32173375

Electronic International Standard Serial Number (EISSN)

  • 1879-0542

Digital Object Identifier (DOI)

  • 10.1016/j.imlet.2020.03.002


  • eng

Conference Location

  • Netherlands