Evidence map›Paper›PMID 19415922›Full record

ArticleMolecular pharmaceutics

In vivo studies on the effect of co-encapsulation of CpG DNA and antigen in acid-degradable microparticle vaccines.

Tristan T Beaudette, Eric M Bachelder, Joel A Cohen, Allie C Obermeyer, Kyle E Broaders, Jean M J Fréchet, Eun-Suk Kang, Ines Mende, William W Tseng, Matthew G Davidson and 1 more

Abstract read
In one paragraph

Article in Molecular pharmaceutics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.7field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
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  5. Intracellular Cleavable CpG Oligodeoxynucleotide-Antigen Conjugate Enhances Anti-tumor Immunity.Molecular therapy : the journal of the American Society of Gene Therapy · 2017
    Article
  6. Article
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  8. Article
  9. Adjuvants: Classification, Modus Operandi, and Licensing.Journal of immunology research · 2016
    Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Nanoparticle conjugation of CpG enhances adjuvancy for cellular immunity and memory recall at low dose.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  16. Review
  17. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 2 countries.

Tristan T BeaudetteCollege of Chemistry, University of California, Berkeley, California 94720-1460, USA.
Eric M Bachelder
Joel A Cohen
Allie C Obermeyer
Kyle E Broaders
Jean M J Fréchet
Eun-Suk Kang
Ines Mende
William W Tseng
Matthew G Davidson
Edgar G Engleman
Stanford University · USUniversity of California, Berkeley · US

Funding

MOLECULAR &CELLULAR IMMUNOBIOLOGYT32AI007290 · NIAID · STANFORD UNIVERSITY · PI Sean Curtis Bendall, Olivia M Martinez · 1985 to 2026
$27.0M
Nanoscale delivery vehicles for antigen-based vaccinesR01EB005824 · NIBIB · UNIVERSITY OF CALIFORNIA BERKELEY · PI FRECHET, JEAN M · 2005 to 2008
$2.0M
NIAID NIH HHS T32 AI007290NIBIB NIH HHS R01 EB005824NIBIB NIH HHS R01-EB005824
6 · The paper itself

Abstract

Protein-based vaccines have been explored as a safer alternative to traditional weakened or killed whole organism based vaccination strategies and have been investigated for their ability to activate the immune system against certain cancers. For optimal stimulation of T lymphocytes, protein-based vaccines should deliver protein antigens to antigen presenting cells in the context of appropriate immunostimulatory signals, thus mimicking actual pathogens. In this report, we describe the synthesis, characterization, and biological evaluation of immunostimulatory acid-degradable microparticles, which are suitable delivery vehicles for use in protein-based vaccines and cancer immunotherapy. Using a 3' conjugation strategy, we optimized the attachment of immunostimulatory CpG DNA to our vaccine carriers and demonstrated that under acidic conditions similar to those found in endosomal compartments, these new particles were capable of simultaneously releasing a model protein antigen and a CpG DNA adjuvant. We found in an in vivo cytotoxicity assay that the co-encapsulation of ovalbumin, a model antigen, and immunostimulatory agent in the same particle led to superior cytotoxic T lymphocyte activity compared to particles coadministered with adjuvant in an unbound form. In addition, we investigated the ability of these acid-degradable particles to induce protective immunity in the MO5 murine melanoma model and found that they were effective until tumor escape, which appeared to result from a loss of antigen expression by the cancer cells due to in vivo selection pressure.

Indexed as

Adjuvants, ImmunologicAnimalsAntineoplastic AgentsCancer VaccinesCytokinesDrug Delivery SystemsFemaleLymphocyte ActivationMelanoma, ExperimentalMiceMice, Inbred C57BLNanoparticlesOligodeoxyribonucleotidesOvalbuminSurvival RateTissue DistributionAdjuvants, ImmunologicAntineoplastic AgentsCancer VaccinesCPG-oligonucleotideCytokinesOligodeoxyribonucleotidesOvalbumin

Identifiers

PMID19415922
PMCPMC2731711
OpenAlexW2085827891

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.