Synthetic innate defense regulator peptide combination using CpG ODN as a novel adjuvant induces longlasting and balanced immune responses.
Mol Med Rep
; 13(1): 915-24, 2016 Jan.
Article
em En
| MEDLINE
| ID: mdl-26647852
ABSTRACT
Vaccines are critical tools for the prevention and treatment of several diseases. Adjuvants have been traditionally used to enhance immunity to vaccines and experimental antigens. In the present study, the adjuvant combination of CpG oligodeoxynucleotides (CpG ODN) and the innate defense regulator (IDR) peptide, IDRHH2, was evaluated for its ability to enhance and modulate the immune response when formulated with alum and the recombinant hepatitis B surface antigen (HBsAg). The CpGHH2 complex enhanced the secretions of tumor necrosis factorα, monocyte chemotactic protein 1 and interferonγ by human peripheral blood mononuclear cells and promoted murine bone marrow dentritic cell maturation. In addition, the present study demonstrated that IDRHH2 was chemotactic for human neutrophils, THP1 cells and RAW264.7 cells at concentrations between 2.5 and 40 µg/ml. The present study also observed that signiï¬cantly higher antiHBs antibody titers, which were sustained at high levels for as long as 35 weeks following the boost immunization, were induced by the combination adjuvant, even when coadministered with a commercial hepatitis B vaccine at a low antigen dose (0.1 µg HBsAg). Notably, the level of IgG2a was almost equal to the level of IgG1, indicating that a balanced T helper (Th)1/Th2 immune response was elicited by the novel vaccine, which was consistent with the ELISpot results. These data suggest that the CpGHH2 complex may be a potential effective adjuvant, which facilitates a reduction in the dose of antigen and induces longlasting, balanced immune responses.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oligodesoxirribonucleotídeos
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Peptídeos
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Adjuvantes Imunológicos
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Imunidade Inata
Limite:
Animals
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Humans
Idioma:
En
Revista:
Mol Med Rep
Ano de publicação:
2016
Tipo de documento:
Article