Evidence map›Paper›PMID 19678844›Full record

ArticleFEMS immunology and medical microbiology2009

Use of stabilized luciferase-expressing plasmids to examine in vivo-induced promoters in the Vibrio cholerae vaccine strain CVD 103-HgR.

Cara E Morin, James B Kaper

Open access · bronzeAbstract read
In one paragraph

Article in FEMS immunology and medical microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.7field-weighted citation impact, top 19% 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

20 citing papers in PubMed, 35 citations in OpenAlex.

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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

2 authors at 1 institution in 1 country.

Cara E MorinDepartment of Microbiology & Immunology, Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
James B Kaper
University of Maryland, Baltimore · US

Funding

Research Training in Gastroenterology and HepatologyT32DK067872 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI RAUFMAN, JEAN-PIERRE · 2005 to 2024
$7.2M
DEVELOPMENT OF A LIVE ORAL CHOLERA VACCINER01AI019716 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI KAPER, JAMES B · 1989 to 2010
$4.4M
NIAID NIH HHS R01 AI019716NIAID NIH HHS R0I AI19716NIDDK NIH HHS T32 DK067872NIDDK NIH HHS T32 DK067872,
6 · The paper itself

Abstract

Live, attenuated Vibrio cholerae vaccines can induce potent immune responses after only a single oral dose. The strategy of harnessing these strains to present antigens from heterologous pathogens to the mucosal immune system shows great promise. To fully realize this possibility, V. cholerae strains must be created that stably express antigens in vivo in sufficient quantity to generate an immune response. In vivo-induced promoters have been shown to increase the stability and immunogenicity of foreign antigens expressed from multicopy plasmids. We report the construction of a series of genetically stabilized plasmids expressing luciferase as a heterologous protein from the following in vivo-induced promoters: V. cholerae P(argC), P(fhuC) and P(vca1008), and Salmonella enterica serovar Typhi P(ompC). We demonstrate that several of these expression plasmids meet two critical criteria for V. cholerae live vector vaccine studies. First, the plasmids are highly stable in the V. cholerae vaccine strain CVD 103-HgR at low copy number, in the absence of selective pressure. Second, real-time bioluminescent imaging (BLI) demonstrates inducible in vivo expression of the promoters in the suckling mouse model of V. cholerae colonization. Moreover, the use of BLI allows for direct quantitative comparison of in vivo expression from four different promoters at various time points.

Indexed as

Gene Expression Regulation, BacterialGenomic InstabilityPlasmidsPromoter Regions, GeneticAnimalsArtificial Gene FusionCholera VaccinesGenes, ReporterLuciferasesMiceSalmonella typhicholera vaccine CVD 103-HgRCholera VaccinesLuciferases

Identifiers

PMID19678844
PMCPMC2906245
OpenAlexW1998793686

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.