What question did this study set out to answer?

To determine whether targeting DNA vaccine antigens directly to dendritic cells via the DEC205 receptor improves immune responses and protective efficacy.

March 10, 2008Journal of Clinical InvestigationOpen Access

The efficacy of DNA vaccination is enhanced in mice by targeting the encoded protein to dendritic cells

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To determine whether targeting DNA vaccine antigens directly to dendritic cells via the DEC205 receptor improves immune responses and protective efficacy.
Engineered DNA vaccines expressing a fusion protein of the model antigen (HIV gag p41) and a single-chain Fv antibody targeting the dendritic cell receptor DEC205.
Administered the targeted or control DNA vaccines to mice through intramuscular injection to measure MHC class I and II presentation, antibody titers, and IFN-gamma-producing T cells.
Challenged vaccinated mice via the airway route with a recombinant vaccinia virus expressing HIV gag p41 to evaluate protective immunity across different dosages.
Antigens delivered via the DEC205-targeted DNA vaccine selectively localized to dendritic cells and substantially increased MHC class I and II antigen presentation.
Targeted vaccination induced 10-fold higher antibody levels and markedly elevated numbers of IFN-gamma-producing CD4+ and CD8+ T cells compared to non-targeted controls.
A single intramuscular dose protected mice against viral airway challenge using only 1% of the dose required for a standard, non-targeted DNA vaccine.

Authors

GNGodwin NchindaCentre International De Reference Chantal Biya JKJanelle KuroiwaHenry M. Jackson Foundation MOMargarita OksNorthwell Health

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Implication

Preclinical study demonstrates that targeting DNA vaccine antigens to dendritic cells boosts immune protection in mice, indicating a viable method to lower required vaccine doses.

Cite This Study

Nchinda et al. (2008) studied this question.

synapsesocial.com/papers/6a19bea305af093a17f67fff https://doi.org/10.1172/jci34224

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Implication

Preclinical study demonstrates that targeting DNA vaccine antigens to dendritic cells boosts immune protection in mice, indicating a viable method to lower required vaccine doses.

The efficacy of DNA vaccination is enhanced in mice by targeting the encoded protein to dendritic cells

Key Points

Discussion

Implication

Cite This Study

The efficacy of DNA vaccination is enhanced in mice by targeting the encoded protein to dendritic cells

Key Points

Discussion

Implication

Cite This Study

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