Evidence map›Paper›PMID 19152701›Full record

ArticleBMC biotechnology2009

Silica-based cationic bilayers as immunoadjuvants.

Nilton Lincopan, Mariana Ra Santana, Eliana Faquim-Mauro, Maria Helena B da Costa, Ana M Carmona-Ribeiro

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

14 citing papers in PubMed, 48 citations in OpenAlex.

  1. Emerging Cationic Nanovaccines.Pharmaceutics · 2024
    Review
  2. Cationic Nanostructures as Adjuvants for Vaccines.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  3. Supramolecular Nanostructures for Vaccines.Biomimetics (Basel, Switzerland) · 2021
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Cationic Nanostructures for Vaccines Design.Biomimetics (Basel, Switzerland) · 2020
    Review
  9. Article
  10. Article
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  14. Review
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

5 authors at 2 institutions in 1 country.

Nilton LincopanDepartamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Caixa Postal 26077, São Paulo-SP, Brazil.
Mariana Ra Santana
Eliana Faquim-Mauro
Maria Helena B da Costa
Ana M Carmona-Ribeiro
Universidade de São Paulo · BRInstituto Butantan · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSilica particles cationized by dioctadecyldimethylammonium bromide (DODAB) bilayer were previously described. This work shows the efficiency of these particulates for antigen adsorption and presentation to the immune system and proves the concept that silica-based cationic bilayers exhibit better performance than alum regarding colloid stability and cellular immune responses for vaccine design.

resultsFirstly, the silica/DODAB assembly was characterized at 1 mM NaCl, pH 6.3 or 5 mM Tris.HCl, pH 7.4 and 0.1 mg/ml silica over a range of DODAB concentrations (0.001-1 mM) by means of dynamic light scattering for particle sizing and zeta-potential analysis. 0.05 mM DODAB is enough to produce cationic bilayer-covered particles with good colloid stability. Secondly, conditions for maximal adsorption of bovine serum albumin (BSA) or a recombinant, heat-shock protein from Mycobacterium leprae (18 kDa-hsp) onto DODAB-covered or onto bare silica were determined. At maximal antigen adsorption, cellular immune responses in vivo from delayed-type hypersensitivity reactions determined by foot-pad swelling tests (DTH) and cytokines analysis evidenced the superior performance of the silica/DODAB adjuvant as compared to alum or antigens alone whereas humoral response from IgG in serum was equal to the one elicited by alum as adjuvant.

conclusionCationized silica is a biocompatible, inexpensive, easily prepared and possibly general immunoadjuvant for antigen presentation which displays higher colloid stability than alum, better performance regarding cellular immune responses and employs very low, micromolar doses of cationic and toxic synthetic lipid.

Indexed as

Antigen PresentationAdjuvants, ImmunologicAdsorptionAnimalsAntibody FormationCationsCells, CulturedCytokinesEnzyme-Linked Immunosorbent AssayFemaleHypersensitivity, DelayedLipid BilayersMiceMice, Inbred BALB CQuaternary Ammonium CompoundsSerum Albumin, BovineAdjuvants, ImmunologicCationsCytokinesdimethyldioctadecylammoniumLipid BilayersQuaternary Ammonium CompoundsSerum Albumin, BovineSilicon Dioxide

Identifiers

PMID19152701
PMCPMC2647919
OpenAlexW2159481199

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.