BACKGROUND Dissolvable microneedle patches (dMNPs) provide ease of deployment and eliminate need for hypodermic needle disposal after conventional vaccinations. In this study, immunogenicity of dMNP delivery of adjuvant-free monovalent hepatitis B surface antigen (HBsAg) vaccine (AFV) to standard intramuscular (IM) injection of monovalent aluminum-adjuvanted monovalent hepatitis B vaccine (AAV) were compared in rhesus macaques. METHODS Sixteen macaques were immunized twice in 4 groups: dMNP delivery of 24 ± 8µg (n=4) or 48 ± 14µg (n=4) AFV; IM injection of 10µg AFV (IM AFV, n=4); and IM injection of 10µg AAV (IM AAV, n=4). Levels of hepatitis B surface antibody and HBsAg-specific T-cell responses were analyzed. RESULTS Six of 8 animals with dMNP delivery of AFV had anti-HBs levels ≥10 mIU/ml after the first vaccine dose. After dMNP delivery of AFV, IFN-γ, IL-2, and IL-4 production by HBsAg-specific T-cells were detected. A statistically significant positive correlation was detected between anti-HBs levels and HBsAg-specific IFN-γ and IL-2 (Th1-type cytokine) and IL-4 (Th2-type cytokine) producing cells in all anti-HBs positive animals. CONCLUSIONS dMNP delivery of AFV can elicit seroprotective anti-HBs levels in rhesus macaques that correlate in human seroprotection, and could be particularly promising for hepatitis B vaccine birth dose delivery in resource-constrained regions.
Feasibility of Hepatitis B Vaccination by Microneedle Patch: Cellular and Humoral Immunity Studies in Rhesus Macaques.
Youkyung H Choi,M. Perez-Cuevas,M. Kodani,Xiugen Zhang,M. Prausnitz,S. Kamili,S. O'Connor
Published 2019 in Journal of Infectious Diseases
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- Publication year
2019
- Venue
Journal of Infectious Diseases
- Publication date
2019-08-13
- Fields of study
Medicine
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- External record
- Source metadata
Semantic Scholar, PubMed
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