Evidence map›Paper›PMID 25888095›Full record

ArticleBMC biotechnology2015

The inducible nitA promoter provides a powerful molecular switch for transgene expression in Volvox carteri.

Eva Laura von der Heyde, Benjamin Klein, Lars Abram, Armin Hallmann

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

11 citing papers in PubMed, 21 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

4 authors at 1 institution in 1 country.

Eva Laura von der HeydeDepartment of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, D-33615, Bielefeld, Germany. evdheyde@uni-bielefeld.de.
Benjamin KleinDepartment of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, D-33615, Bielefeld, Germany. bklein@uni-bielefeld.de.
Lars AbramDepartment of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, D-33615, Bielefeld, Germany. lars.abram@yahoo.de.
Armin HallmannDepartment of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, D-33615, Bielefeld, Germany. armin.hallmann@gmx.de.
Bielefeld University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe multicellular green alga Volvox carteri represents an attractive model system to study various aspects of multicellularity like cellular differentiation, morphogenesis, epithelial folding and ECM biogenesis. However, functional and molecular analyses of such processes require a wide array of molecular tools for genetic engineering. So far there are only a limited number of molecular tools available in Volvox.

resultsHere, we show that the promoter of the V. carteri nitrate reductase gene (nitA) is a powerful molecular switch for induction of transgene expression. Strong expression is triggered by simply changing the nitrogen source from ammonium to nitrate. We also show that the luciferase (g-luc) gene from the marine copepod Gaussia princeps, which previously was engineered to match the codon usage of the unicellular alga Chlamydomonas reinhardtii, is a suitable reporter gene in V. carteri. Emitted light of the chemiluminescent reaction can be easily detected and quantified with a luminometer. Long-term stability of inducible expression of the chimeric nitA/g-luc transgenes after stable nuclear transformation was demonstrated by transcription analysis and bioluminescence assays.

conclusionTwo novel molecular tools for genetic engineering of Volvox are now available: the nitrate-inducible nitA promoter of V. carteri and the codon-adapted luciferase reporter gene of G. princeps. These novel tools will be useful for future molecular research in V. carteri.

Indexed as

Promoter Regions, GeneticAlgal ProteinsAmmonium CompoundsAnimalsCopepodaGenes, ReporterGenetic EngineeringLuciferasesLuminescent AgentsModels, BiologicalNitrate ReductaseNitratesTransgenesVolvoxAlgal ProteinsAmmonium CompoundsLuciferasesLuminescent AgentsNitrate ReductaseNitrates

Identifiers

PMID25888095
PMCPMC4339647
OpenAlexW2044022343

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.