Corn-derived alpha-D-glucan nanoparticles as adjuvant for intramuscular and intranasal immunization in pigs

Santosh Dhakal, Fangjia Lu, Shristi Ghimire, Sankar Renu, Yashavanth Shaan Lakshmanappa, Bradley T. Hogshead, Darryl Ragland, Harm HogenEsch, Gourapura J. Renukaradhya

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Adjuvant potential of positively charged corn-derived nanoparticles (Nano-11) was earlier revealed in mice. We evaluated its adjuvant role to electrostatically adsorbed inactivated/killed swine influenza virus antigen (KAg) (Nano-11 + KAg) in pigs. Nano-11 facilitated the uptake of KAg by antigen presenting cells and induced secretion of proinflammatory cytokines. In pigs vaccinated by an intranasal mist containing Nano-11 + KAg, expression of T-helper 1 and T-helper 2 transcription factors and secretion of cross-reactive influenza antigen-specific mucosal IgA in the nasal cavity were observed. The enhanced frequencies of IFN-γ positive T-helper and cytotoxic T-cells in Nano-11 + KAg-vaccinates after heterologous virus challenge were also observed. Clinically, slightly reduced influenza signs and pneumonic lesions, with mild reduction in virus load in the respiratory tract of vaccinates were observed. In pigs immunized with Nano-11 adsorbed ovalbumin administered by intramuscular (IM) route, enhanced IgG1 and IgG2 antibodies were detected in serum. Thus, Nano-11 vaccine delivery system confers adjuvant effect in pigs.

Original languageEnglish (US)
Pages (from-to)226-235
Number of pages10
JournalNanomedicine: Nanotechnology, Biology, and Medicine
Volume16
DOIs
StatePublished - Feb 2019

Keywords

  • Adjuvant
  • Nano-11
  • Nanoparticles
  • Pigs
  • Swine influenza virus

ASJC Scopus subject areas

  • Bioengineering
  • Medicine (miscellaneous)
  • Molecular Medicine
  • Biomedical Engineering
  • Materials Science(all)
  • Pharmaceutical Science

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