The use of a mutant TNF-alpha as a vaccine adjuvant for the induction of mucosal immune responses.
Safe and potent adjuvants are required in order to establish effective mucosal vaccines. Cytokines are promising adjuvants because they are human-derived safe biomaterial and display immune-modulating functions. We have created a mutant tumor necrosis factor-alpha (TNF-alpha), mTNF-K90R, that exhibits high bioactivity and resistance to proteases. Here, we examined the potential of mTNF-K90R as a mucosal adjuvant. Initially, we showed that intranasal co-administration of mTNF-K90R with ovalbumin (OVA) potently produced OVA-specific Immunoglobulin (Ig) G antibodies (Abs) in serum and IgA Abs both at local and distal mucosal sites compared to co-administration with wild-type TNF-alpha. The OVA-specific immune response was characterized by high levels of serum IgG1 and increased production of interleukin-4 (IL-4), IL-5 and IL-10 from splenocytes of immunized mice, suggesting a Th2 response. Furthermore, intranasal immunization with an antigen from influenza virus plus mTNF-K90R exhibited mucosal adjuvant activity for induction of both systemic and mucosal immune responses. Importantly, histopathological examination of the nasal tissue of mTNF-K90R treated mice detected no signs of toxicity. These findings suggest that mTNF-K90R is safe and effective mucosal adjuvant and this system may have potential application as a universal mucosal adjuvant system for mucosal vaccines improving the immune response to a variety of viral antigens.
Kayamuro
Hiroyuki
H
Laboratory of Pharmaceutical Proteomics, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan.
Abe
Yasuhiro
Y
Yoshioka
Yasuo
Y
Katayama
Kazufumi
K
Nomura
Tetsuya
T
Yoshida
Tokuyuki
T
Yamashita
Kohei
K
Yoshikawa
Tomoaki
T
Kawai
Yuichi
Y
Mayumi
Tadanori
T
Hiroi
Takachika
T
Itoh
Norio
N
Nagano
Kazuya
K
Kamada
Haruhiko
H
Tsunoda
Shin-ichi
S
Tsutsumi
Yasuo
Y
D000276:Adjuvants, Immunologic / Q000008:administration & dosage*; D000818:Animals; D005260:Female; D007113:Immunity, Innate / Q000187:drug effects / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D009092:Mucous Membrane / Q000187:drug effects* / Q000276:immunology*; D009154:Mutation; D014409:Tumor Necrosis Factor-alpha / Q000008:administration & dosage* / Q000235:genetics / Q000276:immunology*; D014612:Vaccines / Q000008:administration & dosage / Q000276:immunology*
D000276:Adjuvants, Immunologic; D014409:Tumor Necrosis Factor-alpha; D014612:Vaccines