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Intradermal immunization by Ebola virus GP subunit vaccines using microneedle patches protects mice against lethal EBOV challenge.

Abstract：

:Development of a safe and efficacious filovirus vaccine is of high importance to public health. In this study, we compared immune responses induced by Ebola virus (EBOV) glycoprotein (GP) subunit vaccines via intradermal immunization with microneedle (MN) patches and the conventional intramuscular (IM) injection in mice, which showed that MN delivery of GP induced higher levels and longer lasting antibody responses against GP than IM injection. Further, we found that EBOV GP in formulation with a saponin-based adjuvant, Matrix-M, can be efficiently loaded onto MN patches. Co-delivery of Matrix-M with GP significantly enhanced induction of antibody responses by MN delivery, as also observed for IM injection. Results from challenge studies showed that all mice that received the GP/adjuvant formulation by MN or IM immunizations were protected from lethal EBOV challenge. Further, 4 out of 5 mice vaccinated by MN delivery of unadjuvanted GP also survived the challenge, whereas only 1 out of 5 mice vaccinated by IM injection of unadjuvanted GP survived the challenge. These results demonstrate that MN patch delivery of EBOV GP subunit vaccines, which is expected to enable improved safety and thermal stability, can confer effective protection against EBOV infection that is superior to IM vaccination.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Liu Y,Ye L,Lin F,Gomaa Y,Flyer D,Carrion R Jr,Patterson JL,Prausnitz MR,Smith G,Glenn G,Wu H,Compans RW,Yang C

doi

10.1038/s41598-018-29135-w

subject

Has Abstract

pub_date

2018-07-25 00:00:00

pages

11193

issue

1

issn

2045-2322

pii

10.1038/s41598-018-29135-w

journal_volume

8

pub_type

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