Microneedle delivery of an M2e-TLR5 ligand fusion protein to skin confers broadly cross-protective influenza immunity

B. Z. Wang, Harvinder Gill, C. He, C. Ou, L. Wang, Y. C. Wang, H. Feng, H. Zhang, M. R. Prausnitz, R. W. Compans

Research output: Contribution to journalArticlepeer-review

Abstract

Influenza vaccines with broad cross-protection are urgently needed to prevent an emerging influenza pandemic. A fusion protein of the Toll-like receptor (TLR) 5-agonist domains from flagellin and multiple repeats of the conserved extracellular domain of the influenza matrix protein 2 (M2e) was constructed, purified and evaluated as such a vaccine. A painless vaccination method suitable for possible self-administration using coated microneedle arrays was investigated for skin-targeted delivery of the fusion protein in a mouse model. The results demonstrate that microneedle immunization induced strong humoral as well as mucosal antibody responses and conferred complete protection against homo- and heterosubtypic lethal virus challenges. Protective efficacy with microneedles was found to be significantly better than that seen with conventional intramuscular injection, and comparable to that observed with intranasal immunization. Because of its advantages for administration, safety and st
Original languageEnglish
Pages (from-to)1-7
JournalJ Control Release
StatePublished - 2014

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