Details

Autor(en) / Beteiligte

• Lee, Jeong-Jun
• Shim, Aeri
• Lee, Song Yi
• Kwon, Bo-Eun
• Kim, Seong Ryeol
• Ko, Hyun-Jeong
• Cho, Hyun-Jong

Titel

Ready-to-use colloidal adjuvant systems for intranasal immunization

Ist Teil von

• Journal of colloid and interface science, 2016-04, Vol.467, p.121-128

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• [Display omitted] Adjuvant systems based on oil-in-water (o/w) microemulsions (MEs) for vaccination via intranasal administration were prepared and evaluated. A ready-to-use blank ME system composed of mineral oil (oil), Labrasol (surfactant), Tween 80 (cosurfactant), and water was prepared and blended with antigen (Ag) solution prior to use. The o/w ME system developed exhibited nano-size droplets within the tested range of Ag concentrations and dilution factors. The maintenance of primary, secondary, and tertiary structural stability of ovalbumin (OVA) in ME, compared with OVA in solution, was demonstrated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), circular dichroism (CD), and fluorescence intensity measurements, respectively. The uptake efficiency in RAW 264.7 cells, evaluated by flow cytometry, of OVA in the ME group was significantly higher than that of the OVA solution group (p<0.05). In an intranasal immunization study with OVA ME in mice, elevated adjuvant effects in terms of mucosal immunization and Th1-dominant cell-mediated immune responses were identified. Given the convenience of use (simply mixing with Ag solution prior to use) and the adjuvant effects after intranasal immunization, the new o/w ME may be a practical and efficient adjuvant system for intranasal vaccination.