Evidence map›Paper›PMID 29642881›Full record

ArticleBMC biotechnology2018

Antiplasmodial and trypanocidal activity of violacein and deoxyviolacein produced from synthetic operons.

Elizabeth Bilsland, Tatyana A Tavella, Renata Krogh, Jamie E Stokes, Annabelle Roberts, James Ajioka, David R Spring, Adriano D Andricopulo, Fabio T M Costa, Stephen G Oliver

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2018. 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
4.2field-weighted citation impact, top 6% 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, 47 citations in OpenAlex.

  1. Article
  2. Violacein-Loaded Outer Membrane Vesicles fromACS biomaterials science & engineering · 2025
    Article
  3. Article
  4. International journal of systematic and evolutionary microbiology · 2025
    Article
  5. Pigments from pathogenic bacteria: a comprehensive update on recent advances.World journal of microbiology & biotechnology · 2024
    Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Multi-target drug with potential applications: violacein in the spotlight.World journal of microbiology & biotechnology · 2021
    Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Assessment ofRSC advances · 2020
    Article
  18. A Biosynthetic Platform for Antimalarial Drug Discovery.Antimicrobial agents and chemotherapy · 2020
    Article
  19. Article
  20. Article
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 3 institutions in 3 countries.

Elizabeth BilslandCambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK. bilsland@unicamp.br.ORCID 0000-0002-8697-3553
Tatyana A TavellaLaboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva - Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP, Brazil.
Renata KroghLaboratory of Medicinal and Computational Chemistry, University of São Paulo, São Carlos, SP, Brazil.
Jamie E StokesDepartment of Chemistry, University of Cambridge, Cambridge, UK.
Annabelle RobertsCambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK.
James AjiokaDepartment of Pathology, University of Cambridge, Cambridge, UK.
David R SpringDepartment of Chemistry, University of Cambridge, Cambridge, UK.
Adriano D AndricopuloLaboratory of Medicinal and Computational Chemistry, University of São Paulo, São Carlos, SP, Brazil.
Fabio T M CostaLaboratory of Tropical Diseases - Prof. Dr. Luiz Jacintho da Silva - Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, SP, Brazil.
Stephen G OliverCambridge Systems Biology Centre and Department of Biochemistry, University of Cambridge, Cambridge, UK.
University of Cambridge · GBUniversidade Estadual de Campinas (UNICAMP) · BRUniversidade de São Paulo · BR

Funding

Biotechnology and Biological Sciences Research Council BB/F008228/1Biotechnology and Biological Sciences Research Council BB/L014130/1
6 · The paper itself

Abstract

backgroundViolacein is a deep violet compound that is produced by a number of bacterial species. It is synthesized from tryptophan by a pathway that involves the sequential action of 5 different enzymes (encoded by genes vioA to vioE). Violacein has antibacterial, antiparasitic, and antiviral activities, and also has the potential of inducing apoptosis in certain cancer cells.

resultsHere, we describe the construction of a series of plasmids harboring the complete or partial violacein biosynthesis operon and their use to enable production of violacein and deoxyviolacein in E.coli. We performed in vitro assays to determine the biological activity of these compounds against Plasmodium, Trypanosoma, and mammalian cells. We found that, while deoxyviolacein has a lower activity against parasites than violacein, its toxicity to mammalian cells is insignificant compared to that of violacein.

conclusionsWe constructed E. coli strains capable of producing biologically active violacein and related compounds, and propose that deoxyviolacein might be a useful starting compound for the development of antiparasite drugs.

Indexed as

AnimalsAntimalarialsAntineoplastic AgentsChlorocebus aethiopsCOS CellsEscherichia coliHep G2 CellsHumansIndole AlkaloidsIndolesMetabolic EngineeringOperonPlasmidsPlasmodium falciparumSpiro CompoundsTrypanocidal AgentsAntimalarialsAntineoplastic AgentsdeoxyvobtusineIndole AlkaloidsIndolesSpiro CompoundsTrypanocidal AgentsviolaceinAntiparasiticDeoxyviolaceinEscherichia coliPlasmodium falciparumSynthetic operonTrypanosoma cruziViolacein

Identifiers

PMID29642881
PMCPMC5896143
OpenAlexW2797860187

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.