Nanogel antigenic protein-delivery system for adjuvant-free intranasal vaccines

Tomonori Nochi, Yoshikazu Yuki, Haruko Takahashi, Shin Ichi Sawada, Mio Mejima, Tomoko Kohda, Norihiro Harada, Il Gyu Kong, Ayuko Sato, Nobuhiro Kataoka, Daisuke Tokuhara, Shiho Kurokawa, Yuko Takahashi, Hideo Tsukada, Shunji Kozaki, Kazunari Akiyoshi, Hiroshi Kiyono

研究成果: Article査読

340 被引用数 (Scopus)

抄録

Nanotechnology is an innovative method of freely controlling nanometre-sized materials1. Recent outbreaks of mucosal infectious diseases have increased the demands for development of mucosal vaccines because they induce both systemic and mucosal antigen-specific immune responses 2. Here we developed an intranasal vaccine-delivery system with a nanometre-sized hydrogel ('nanogel-™) consisting of a cationic type of cholesteryl-group-bearing pullulan (cCHP). A non-toxic subunit fragment of Clostridium botulinum type-A neurotoxin BoHc/A administered intranasally with cCHP nanogel (cCHP-BoHc/A) continuously adhered to the nasal epithelium and was effectively taken up by mucosal dendritic cells after its release from the cCHP nanogel. Vigorous botulinum-neurotoxin-A-neutralizing serum IgG and secretory IgA antibody responses were induced without co-administration of mucosal adjuvant. Importantly, intranasally administered cCHP-BoHc/A did not accumulate in the olfactory bulbs or brain. Moreover, intranasally immunized tetanus toxoid with cCHP nanogel induced strong tetanus-toxoid-specific systemic and mucosal immune responses. These results indicate that cCHP nanogel can be used as a universal protein-based antigen-delivery vehicle for adjuvant-free intranasal vaccination.

本文言語English
ページ(範囲)572-578
ページ数7
ジャーナルNature Materials
9
7
DOI
出版ステータスPublished - 2010 7
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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