Evidence map›Paper›PMID 28536456›Full record

ArticleScientific reports2017

Use of genetically modified bacteria for drug delivery in humans: Revisiting the safety aspect.

Udo Wegmann, Ana Lucia Carvalho, Martin Stocks, Simon R Carding

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

26 citing papers in PubMed, 53 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Gut microbes · 2025
    Article
  5. Article
  6. Review
  7. Nano-delivery platforms for bacterial gene transformation: suitability and challenges.International microbiology : the official journal of the Spanish Society for Microbiology · 2025
    Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. A molecular toolkit for heterologous protein secretion acrossbioRxiv : the preprint server for biology · 2023
    Article
  14. Review
  15. Review
  16. Novel drug delivery systems for inflammatory bowel disease.World journal of gastroenterology · 2022
    Review
  17. Article
  18. Article
  19. Review
  20. Review
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 2 institutions in 1 country.

Udo WegmannGut Health and Food Safety Research Programme, The Quadram Institute, Norwich Research Park, Norwich, NR4 7UA, Norfolk, UK.
Ana Lucia CarvalhoGut Health and Food Safety Research Programme, The Quadram Institute, Norwich Research Park, Norwich, NR4 7UA, Norfolk, UK.
Martin StocksPlant Biotechnology Ltd., Norwich Research Park, Norwich, NR4 7UH, Norfolk, UK.
Simon R CardingGut Health and Food Safety Research Programme, The Quadram Institute, Norwich Research Park, Norwich, NR4 7UA, Norfolk, UK. simon.carding@IFR.ac.uk.
Norwich Research Park · GBUniversity of East Anglia · GB

Funding

Biotechnology and Biological Sciences Research Council BB/J004529/1Biotechnology and Biological Sciences Research Council BB/L004291/1
6 · The paper itself

Abstract

The use of live, genetically modified bacteria as delivery vehicles for biologics is of considerable interest scientifically and has attracted significant commercial investment. We have pioneered the use of the commensal gut bacterium Bacteroides ovatus for the oral delivery of therapeutics to the gastrointestinal tract. Here we report on our investigations of the biological safety of engineered B. ovatus bacteria that includes the use of thymineless death as a containment strategy and the potential for the spread of transgenes in vivo in the mammalian gastrointestinal tract. We demonstrate the ability of GM-strains of Bacteroides to survive thymine starvation and overcome it through the exchange of genetic material. We also provide evidence for horizontal gene transfer in the mammalian gastrointestinal tract resulting in transgene-carrying wild type bacteria. These findings sound a strong note of caution on the employment of live genetically modified bacteria for the delivery of biologics.

Indexed as

AnimalsBacteroidesDrug Delivery SystemsGastrointestinal TractGenetic EngineeringGene Transfer, HorizontalHumansMicrobial InteractionsTransgenes

Identifiers

PMID28536456
PMCPMC5442108
OpenAlexW2614903907

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.