DNA priming immunization is more effective than recombinant protein vaccine in eliciting antigen-specific B cell responses.

Abstract:

:While DNA prime-protein boost vaccination approach has been widely used in preclinical and clinical studies especially in the field of HIV vaccine development, the exact role of DNA immunization has not been fully identified. Our previous work demonstrated that DNA immunization was able to elicit T follicular helper (Tfh) cell responses and germinal center (GC) B cell development in a mouse model. In the current report, a mouse immunogenicity study was conducted to further ask whether DNA immunization is able to elicit antigen-specific B cell responses. Using HIV-1 Env as model antigen delivered in the form of DNA prime-protein boost, our data demonstrated that DNA prime was able to enhance the antigen-specific B cell responses for both Env-specific antibody secreting cells (ASC) and memory B cells. Furthermore, the DNA priming can greatly reduce the need of including an adjuvant as part of the recombinant protein vaccine boost formulation. Our findings revealed one mechanism that supports the value of DNA priming in assisting the inductin of high affinity and long lasting antigen specific antibody responses.

journal_name

Emerg Microbes Infect

authors

Li H,Wang S,Hu G,Zhang L,Liu S,Lu S

doi

10.1080/22221751.2021.1918026

keywords:

["B cell","DNA vaccine","HIV-1","antibody","envelope glycoprotein","heterologous prime – boost","protein vaccine"]

subject

Has Abstract

pub_date

2021-12-01 00:00:00

pages

833-841

issue

1

issn

2222-1751

journal_volume

10

pub_type

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