title: Immunogenicity of bovine parainfluenza type 3 virus proteins encapsulated in nanoparticle vaccines, following intranasal administration to mice.
abstract: Stimulation of long lasting, protective immunity to respiratory viruses is often difficult to achieve with conventional respiratory vaccines. Polymeric nanoparticles, incorporating viral proteins have been shown to offer sustained release of antigen, with consequent prolongued stimulation of the respiratory immune system. In this paper the efficacy of two nanoparticle vaccines (poly-lactide-co-glycolide, PLGA; polymethylmethacrylate, PMMA), incorporating proteins of bovine parainfluenza type 3 virus (BPI-3) was investigated. As a preliminary to experiments in calves, it was considered essential to demonstrate immunogenicity of the experimental vaccine in mice. Mice immunised with PLGA nanoparticles, containing BPI-3 proteins, developed higher levels of virus-specific antibody than mice immunised with the PMMA vaccine or with soluble viral proteins alone. Immunoblotting using serum from the vaccinated mice, demonstrated strong reactions against the major BPI-3 proteins.
authors.affiliation: School of Pharmacy, Medical Biology Centre, The Queen's University of Belfast, 97 Lisburn Road, UK.
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Shephard
authors.forename: Daniel
authors.initials: D
authors.lastname: Todd
authors.forename: Brian M
authors.initials: BM
authors.lastname: Adair
authors.forename: Alan Li Wan
authors.initials: AL
authors.lastname: Po
authors.forename: Dermot P
authors.initials: DP
authors.lastname: Mackie
authors.forename: Eileen M
authors.initials: EM
authors.lastname: Scott
mesh_terms: D000281:Administration, Intranasal; D000818:Animals; D019344:Lactic Acid; D051379:Mice; D036103:Nanotechnology; D029101:Parainfluenza Virus 3, Bovine / Q000276:immunology*; D011100:Polyglycolic Acid; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers; D019904:Polymethyl Methacrylate; D014765:Viral Vaccines / Q000008:administration & dosage* / Q000737:chemistry / Q000276:immunology*
chemical_list: D011108:Polymers; D014765:Viral Vaccines; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D019904:Polymethyl Methacrylate