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Neutralizing Antibody-Based Prevention of Cell-Associated HIV-1 Infection.


ABSTRACT: Improved vaccine-mediated protection against HIV-1 requires a thorough understanding of the mode of HIV-1 transmission and how various immune responses control transmission. Cell-associated HIV-1 is infectious and contributes to HIV-1 transmission in humans. Non-human primate models of cell-associated SIV infection demonstrate that cell-associated SIV is more infectious than cell-free SIV. In a recently described chimeric simian?human immunodeficiency virus (SHIV) macaque model, it was demonstrated that an occult infection with cell-associated SHIV can be established that evades passive protection with a broadly neutralizing antibody (bnAb). Indeed, considerable in vitro data shows that bnAbs have less efficacy against cell-associated HIV-1 than cell-free HIV-1. Optimizing the protective capacity of immune responses such as bnAbs against cell-associated infections may be needed to maximize their protective efficacy.

SUBMITTER: Parsons MS 

PROVIDER: S-EPMC6024846 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Neutralizing Antibody-Based Prevention of Cell-Associated HIV-1 Infection.

Parsons Matthew S MS   Le Grand Roger R   Kent Stephen J SJ  

Viruses 20180618 6


Improved vaccine-mediated protection against HIV-1 requires a thorough understanding of the mode of HIV-1 transmission and how various immune responses control transmission. Cell-associated HIV-1 is infectious and contributes to HIV-1 transmission in humans. Non-human primate models of cell-associated SIV infection demonstrate that cell-associated SIV is more infectious than cell-free SIV. In a recently described chimeric simian⁻human immunodeficiency virus (SHIV) macaque model, it was demonstra  ...[more]

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