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Induction of innate and adaptive immunity by delivery of poly dA:dT to dendritic cells.


ABSTRACT: Targeted delivery of antigens to dendritic cells (DCs) is a promising vaccination strategy. However, to ensure immunity, the approach depends on coadministration of an adjuvant. Here we ask whether targeting of both adjuvant and antigen to DCs is sufficient to induce immunity. Using a protein ligation method, we develop a general approach for linking the immune stimulant, poly dA:dT (pdA:dT), to a monoclonal antibody (mAb) specific for DEC205 (DEC). We show that DEC-specific mAbs deliver pdA:dT to DCs for the efficient production of type I interferon in human monocyte-derived DCs and in mice. Notably, adaptive T-cell immunity is elicited when mAbs specific for DEC-pdA:dT are used as the activation stimuli and are administered together with a DC-targeted antigen. Collectively, our studies indicate that DCs can integrate innate and adaptive immunity in vivo and suggest that dual delivery of antigen and adjuvant to DCs might be an efficient approach to vaccine development.

SUBMITTER: Barbuto S 

PROVIDER: S-EPMC3947612 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature

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Induction of innate and adaptive immunity by delivery of poly dA:dT to dendritic cells.

Barbuto Scott S   Idoyaga Juliana J   Vila-Perelló Miquel M   Longhi Maria P MP   Breton Gaëlle G   Steinman Ralph M RM   Muir Tom W TW  

Nature chemical biology 20130217 4


Targeted delivery of antigens to dendritic cells (DCs) is a promising vaccination strategy. However, to ensure immunity, the approach depends on coadministration of an adjuvant. Here we ask whether targeting of both adjuvant and antigen to DCs is sufficient to induce immunity. Using a protein ligation method, we develop a general approach for linking the immune stimulant, poly dA:dT (pdA:dT), to a monoclonal antibody (mAb) specific for DEC205 (DEC). We show that DEC-specific mAbs deliver pdA:dT  ...[more]

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