2'-Fluoro-c-di-GMP as an oral vaccine adjuvant.

ABSTRACT: Bis-(3'-5')-cyclic dimeric 2'-deoxy-2'-fluoroguanosine monophosphate (2'-F-c-di-GMP) was synthesized through the modified H-phosphonate chemistry. Oral immunization of C57BL/6 mice with Helicobacter pylori cell-free sonicate extract adjuvanted with 2'-F-c-di-GMP led to the production of antigen-specific antibodies in feces and sera, and lowered bacterial counts in the stomach upon post-vaccination infections in immunized mice. Similarly, oral vaccination of BALB/c mice with flagillin proteins from Clostridium difficile and Listeria monocytogenes adjuvanted with 2'-F-c-di-GMP led to production of antigen-specific antibodies both systemically and mucosally. The adjuvanticity of 2'-F-c-di-GMP is associated with the enhanced induction of interferon γ. These results demonst

SUBMITTER: Li J 

PROVIDER: S-EPMC9076492 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature