The efficacy of a new vaccine-delivery vector, based on the filamentous bacteriophage fd displaying a single-chain antibody fragment known to bind the mouse DC surface molecule DEC-205, is reported. We demonstrate both in vitro and in vivo an enhanced receptor-mediated uptake of phage particles expressing the anti-DEC-205 fragment by DCs. We also report that DCs targeted by fd virions in the absence of other stimuli produce IFN-α and IL-6, and acquire a mature phenotype. Moreover, DC-targeting with fd particles double-displaying the anti-DEC-205 fragment on the pIII protein and the OVA 257-264 antigenic determinant on the pVIII protein induced potent inhibition of the growth of the B16-OVA tumor in vivo. This protection was much stronger than other immunization strategies and similar to that induced by adoptively transferred DCs. Since targeting DEC-205 in the absence of DC activation/maturation agents has previously been described to result in tolerance, the ability of fd bacteriophages to induce a strong tumor-specific immune response by targeting DCs through DEC-205 is unexpected, and further validates the potential employment of this safe, versatile and inexpensive delivery system for vaccine formulation. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Sartorius, R., Bettua, C., D'Apice, L., Caivano, A., Trovato, M., Russo, D., et al. (2011). Vaccination with filamentous bacteriophages targeting DEC-205 induces DC maturation and potent anti-tumor T-cell responses in the absence of adjuvants. EUROPEAN JOURNAL OF IMMUNOLOGY, 41(9), 2573-2584.
Citazione: | Sartorius, R., Bettua, C., D'Apice, L., Caivano, A., Trovato, M., Russo, D., et al. (2011). Vaccination with filamentous bacteriophages targeting DEC-205 induces DC maturation and potent anti-tumor T-cell responses in the absence of adjuvants. EUROPEAN JOURNAL OF IMMUNOLOGY, 41(9), 2573-2584. |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Presenza di un coautore afferente ad Istituzioni straniere: | No |
Titolo: | Vaccination with filamentous bacteriophages targeting DEC-205 induces DC maturation and potent anti-tumor T-cell responses in the absence of adjuvants |
Autori: | Sartorius, R; Bettua, C; D'Apice, L; Caivano, A; Trovato, M; Russo, D; Zanoni, I; Granucci, F; Mascolo, D; Barba, P; Pozzo, G; de Berardinis, P |
Autori: | |
Data di pubblicazione: | 2011 |
Lingua: | English |
Rivista: | EUROPEAN JOURNAL OF IMMUNOLOGY |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/eji.201141526 |
Appare nelle tipologie: | 01 - Articolo su rivista |