Evidence map›Paper›PMID 30578710›Full record

ArticlePlant biotechnology journal2019

Production of tetravalent dengue virus envelope protein domain III based antigens in lettuce chloroplasts and immunologic analysis for future oral vaccine development.

André van Eerde, Johanna Gottschamel, Ralph Bock, Kristine Eraker Aasland Hansen, Hetron Mweemba Munang'andu, Henry Daniell, Jihong Liu Clarke

Abstract read
In one paragraph

Article in Plant biotechnology journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–field-weighted citation impact
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

27 citing papers in PubMed.

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  13. Mucosal Vaccination: A Promising Alternative Against Flaviviruses.Frontiers in cellular and infection microbiology · 2022
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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

7 authors.

André van EerdeNIBIO - Norwegian Institute of Bioeconomy Research, Division of Biotechnology and Plant Health, Ås, Norway.
Johanna GottschamelNIBIO - Norwegian Institute of Bioeconomy Research, Division of Biotechnology and Plant Health, Ås, Norway.
Ralph BockMax Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany.ORCID 0000-0001-7502-6940
Kristine Eraker Aasland HansenNorwegian University of Life Sciences, Faculty of Veterinary Medicine, Ås, Norway.
Hetron Mweemba Munang'anduNorwegian University of Life Sciences, Faculty of Veterinary Medicine, Ås, Norway.
Henry DaniellDepartment of Biochemistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.ORCID 0000-0003-4485-1176
Jihong Liu ClarkeNIBIO - Norwegian Institute of Bioeconomy Research, Division of Biotechnology and Plant Health, Ås, Norway.ORCID 0000-0002-4924-0406

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dengue fever is a mosquito (Aedes aegypti) -transmitted viral disease that is endemic in more than 125 countries around the world. There are four serotypes of the dengue virus (DENV 1-4) and a safe and effective dengue vaccine must provide protection against all four serotypes. To date, the first vaccine, Dengvaxia (CYD-TDV), is available after many decades' efforts, but only has moderate efficacy. More effective and affordable vaccines are hence required. Plants offer promising vaccine production platforms and food crops offer additional advantages for the production of edible human and animal vaccines, thus eliminating the need for expensive fermentation, purification, cold storage and sterile delivery. Oral vaccines can elicit humoural and cellular immunity via both the mucosal and humoral immune systems. Here, we report the production of tetravalent EDIII antigen (EDIII-1-4) in stably transformed lettuce chloroplasts. Transplastomic EDIII-1-4-expressing lettuce lines were obtained and homoplasmy was verified by Southern blot analysis. Expression of EDIII-1-4 antigens was demonstrated by immunoblotting, with the EDIII-1-4 antigen accumulating to 3.45% of the total protein content. Immunological assays in rabbits showed immunogenicity of EDIII-1-4. Our in vitro gastrointestinal digestion analysis revealed that EDIII-1-4 antigens are well protected when passing through the oral and gastric digestion phases but underwent degradation during the intestinal phase. Our results demonstrate that lettuce chloroplast engineering is a promising approach for future production of an affordable oral dengue vaccine.

Indexed as

Administration, OralAnimalsAntibodies, ViralChloroplastsDengue VaccinesLactucaRabbitsViral Envelope ProteinsAntibodies, ViralDengue VaccinesViral Envelope Proteinsdengue fevergastrointestinal digestion analysisimmunogenicitylettuce chloroplast transformationoral vaccinerecombinant EDIII protein

Identifiers

PMID30578710
PMCPMC6576073

What OpenQuestion holds

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LicenceCC BY
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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.