Evidence map›Paper›PMID 22384183›Full record

ArticlePloS one2012

Improving the MVA vaccine potential by deleting the viral gene coding for the IL-18 binding protein.

Juliana Falivene, María Paula Del Médico Zajac, María Fernanda Pascutti, Ana María Rodríguez, Cynthia Maeto, Beatriz Perdiguero, Carmen E Gómez, Mariano Esteban, Gabriela Calamante, María Magdalena Gherardi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

44 citing papers in PubMed, 59 citations in OpenAlex.

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  9. Molecular cloning and characterisation of chicken IL-18 binding protein.Developmental and comparative immunology · 2021
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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

10 authors at 2 institutions in 2 countries.

Juliana FaliveneCentro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.
María Paula Del Médico Zajac
María Fernanda Pascutti
Ana María Rodríguez
Cynthia Maeto
Beatriz Perdiguero
Carmen E Gómez
Mariano Esteban
Gabriela Calamante
María Magdalena Gherardi
University of Buenos Aires · ARCentro Nacional de Biotecnología · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundModified Vaccinia Ankara (MVA) is an attenuated strain of Vaccinia virus (VACV) currently employed in many clinical trials against HIV/AIDS and other diseases. MVA still retains genes involved in host immune response evasion, enabling its optimization by removing some of them. The aim of this study was to evaluate cellular immune responses (CIR) induced by an IL-18 binding protein gene (C12L) deleted vector (MVAΔC12L). METHODOLOGY/PRINCIPAL

findingsBALB/c and C57BL/6 mice were immunized with different doses of MVAΔC12L or MVA wild type (MVAwt), then CIR to VACV epitopes in immunogenic proteins were evaluated in spleen and draining lymph nodes at acute and memory phases (7 and 40 days post-immunization respectively). Compared with parental MVAwt, MVAΔC12L immunization induced a significant increase of two to three-fold in CD8(+) and CD4(+) T-cell responses to different VACV epitopes, with increased percentage of anti-VACV cytotoxic CD8(+) T-cells (CD107a/b(+)) during the acute phase of the response. Importantly, the immunogenicity enhancement was also observed after MVAΔC12L inoculation with different viral doses and by distinct routes (systemic and mucosal). Potentiation of MVA's CIR was also observed during the memory phase, in correlation with a higher protection against an intranasal challenge with VACV WR. Of note, we could also show a significant increase in the CIR against HIV antigens such as Env, Gag, Pol and Nef from different subtypes expressed from two recombinants of MVAΔC12L during heterologous DNA prime/MVA boost vaccination regimens. CONCLUSIONS/SIGNIFICANCE: This study demonstrates the relevance of IL-18 bp contribution in the immune response evasion during MVA infection. Our findings clearly show that the deletion of the viral IL-18 bp gene is an effective approach to increase MVA vaccine efficacy, as immunogenicity improvements were observed against vector antigens and more importantly to HIV antigens.

Indexed as

AIDS VaccinesAnimalsCD8-Positive T-LymphocytesChickensFemaleGene DeletionGenetic VectorsImmunologic MemoryIntercellular Signaling Peptides and ProteinsInterferon-gammaInterleukin-18Interleukin-2Lymph NodesMiceMice, Inbred BALB CMice, Inbred C57BLAIDS VaccinesIntercellular Signaling Peptides and ProteinsInterferon-gammaInterleukin-18interleukin-18 binding proteinInterleukin-2

Identifiers

PMID22384183
PMCPMC3285208
OpenAlexW2059505299

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.