Transcutaneous immunization of Streptococcus suis bacterin using dissolving microneedles

Kai Jen Hsueh, Mei Chin Chen, Li Ting Cheng, Jai Wei Lee, Wen Bin Chung, Chun Yen Chu

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Vaccine delivery using microneedle (MN) patches is an easy, safe and painless alternative to traditional needle injections. In this study, we examined whether MN patches can enhance the efficacy of a Streptococcus suis serotype 2 (S. suis 2) vaccine in a mouse model. Results showed that MNs can reach 200–250 μm into the skin, a depth beneficial for targeted delivery of antigens to antigen-presenting cells in the epidermis and dermis. Vaccination with prime-boost of MN induced higher levels of IgG2a antibody titer, T cell proliferation, and TH1 cytokines (IFN-γ and IL-12) as compared to intramuscular (IM) injection. In addition, single dose MN vaccination better protected mice against lethal challenge than IM vaccination. MN vaccination also conferred long-term IgG2a antibody against S. suis 2 bacteria presence for up to 7 months. Taken together, these data showed that vaccine delivery by MNs results in superior immune response and protection rate when compared to IM injections.

Original languageEnglish
Pages (from-to)78-87
Number of pages10
JournalComparative Immunology, Microbiology and Infectious Diseases
Publication statusPublished - 2017 Feb 1

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Immunology and Allergy
  • Immunology
  • veterinary(all)
  • Infectious Diseases


Dive into the research topics of 'Transcutaneous immunization of Streptococcus suis bacterin using dissolving microneedles'. Together they form a unique fingerprint.

Cite this