Evidence map›Paper›PMID 29754445›Full record

ArticlePlant biotechnology journal2019

Engineering the unicellular alga Phaeodactylum tricornutum for high-value plant triterpenoid production.

Sarah D'Adamo, Gino Schiano di Visconte, Gavin Lowe, Joanna Szaub-Newton, Tracey Beacham, Andrew Landels, Michael J Allen, Andrew Spicer, Michiel Matthijs

Open access · goldAbstract 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 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.2field-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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 123 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

9 authors at 4 institutions in 2 countries.

Sarah D'AdamoEden Laboratory, Algenuity, Stewartby, UK.
Gino Schiano di VisconteEden Laboratory, Algenuity, Stewartby, UK.
Gavin LoweEden Laboratory, Algenuity, Stewartby, UK.
Joanna Szaub-NewtonEden Laboratory, Algenuity, Stewartby, UK.
Tracey BeachamPML: Plymouth Marine Laboratory, Plymouth, UK.
Andrew LandelsPML: Plymouth Marine Laboratory, Plymouth, UK.
Michael J AllenPML: Plymouth Marine Laboratory, Plymouth, UK.
Andrew SpicerEden Laboratory, Algenuity, Stewartby, UK.
Michiel MatthijsEden Laboratory, Algenuity, Stewartby, UK.ORCID 0000-0002-6051-3671
Eden Project · GBPlymouth Marine Laboratory · GBRothamsted Research · GBUniversity of Exeter · GB

Funding

European Union's Seventh Framework Program 613692European Union's Seventh Framework Program FP7/2007-2013/Theme KBBE.2013.3.1.01
6 · The paper itself

Abstract

Plant triterpenoids constitute a diverse class of organic compounds that play a major role in development, plant defence and environmental interaction. Several triterpenes have demonstrated potential as pharmaceuticals. One example is betulin, which has shown promise as a pharmaceutical precursor for the treatment of certain cancers and HIV. Major challenges for triterpenoid commercialization include their low production levels and their cost-effective purification from the complex mixtures present in their natural hosts. Therefore, attempts to produce these compounds in industrially relevant microbial systems such as bacteria and yeasts have attracted great interest. Here, we report the production of the triterpenes betulin and its precursor lupeol in the photosynthetic diatom Phaeodactylum tricornutum, a unicellular eukaryotic alga. This was achieved by introducing three plant enzymes in the microalga: a Lotus japonicus oxidosqualene cyclase and a Medicago truncatula cytochrome P450 along with its native reductase. The introduction of the L. japonicus oxidosqualene cyclase perturbed the mRNA expression levels of the native mevalonate and sterol biosynthesis pathway. The best performing strains were selected and grown in a 550-L pilot-scale photobioreactor facility. To our knowledge, this is the most extensive pathway engineering undertaken in a diatom and the first time that a sapogenin has been artificially produced in a microalga, demonstrating the feasibility of the photo-bio-production of more complex high-value, metabolites in microalgae.

Indexed as

Genetic EngineeringBetulinic AcidBioreactorsCytochrome P-450 Enzyme SystemDiatomsIntramolecular TransferasesLotusLupanesMedicago truncatulaPentacyclic TriterpenesPlants, Genetically ModifiedTerpenesTriterpenesbetulinBetulinic AcidCytochrome P-450 Enzyme SystemIntramolecular Transferaseslanosterol synthaseLupaneslupeolPentacyclic TriterpenesTerpenesTriterpenesalgal synthetic biologybetulinblue biotechnologydiatomslupeolmicroalgaenatural producttriterpenoid biosynthesis

Identifiers

PMID29754445
PMCPMC6330534
OpenAlexW2800109986

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.