Evidence map›Paper›PMID 34281388›Full record

ArticlemBio2021

Engineered Type Six Secretion Systems Deliver Active Exogenous Effectors and Cre Recombinase.

Steven J Hersch, Linh Lam, Tao G Dong

Abstract read
In one paragraph

Article in mBio, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

21 citing papers in PubMed.

  1. Article
  2. Article
  3. Reprogrammed SimCells for antimicrobial therapy.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Emerging methylation-based approaches in microbiome engineering.Biotechnology for biofuels and bioproducts · 2024
    Review
  12. A molecular toolkit for heterologous protein secretion acrossbioRxiv : the preprint server for biology · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. 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

3 authors.

Steven J HerschDepartment of Ecosystem and Public Health, University of Calgarygrid.22072.35, Calgary, Alberta, Canada.
Linh LamDepartment of Ecosystem and Public Health, University of Calgarygrid.22072.35, Calgary, Alberta, Canada.
Tao G DongDepartment of Ecosystem and Public Health, University of Calgarygrid.22072.35, Calgary, Alberta, Canada.

Funding

CIHR
6 · The paper itself

Abstract

Genetic editing has revolutionized biotechnology, but delivery of endonuclease genes as DNA can lead to aberrant integration or overexpression, leading to off-target effects. Here, we develop a mechanism to deliver Cre recombinase as a protein by engineering the bacterial type six secretion system (T6SS). Using multiple T6SS fusion proteins, Aeromonas dhakensis or attenuated Vibrio cholerae donor strains, and a gain-of-function cassette for detecting Cre recombination, we demonstrate successful delivery of active Cre directly into recipient cells. The most efficient transfer was achieved using a truncated version of PAAR2 from V. cholerae, resulting in a relatively small (118-amino-acid) delivery tag. We further demonstrate the versatility of this system by delivering an exogenous effector, TseC, enabling V. cholerae to kill Pseudomonas aeruginosa. This implies that P. aeruginosa is naturally resistant to all native effectors of V. cholerae and that the TseC chaperone protein is not required for its activity. Moreover, it demonstrates that the engineered system can improve T6SS efficacy against specific pathogens, proposing future application in microbiome manipulation or as a next-generation antimicrobial. Inexpensive and easy to produce, this protein delivery system has many potential applications, ranging from studying T6SS effectors to genetic editing.

Indexed as

AeromonasAnti-Bacterial AgentsBacterial ProteinsGene EditingGene Transfer TechniquesIntegrasesProtein TransportPseudomonas aeruginosaType VI Secretion SystemsVibrio choleraeAnti-Bacterial AgentsBacterial ProteinsCre recombinaseIntegrasesType VI Secretion SystemsAeromonas dhakensisantimicrobialbactericidal activitybiotechnologyCre recombinaseDNA recombinationeffectorgenetic editinginterspecies interactionsprotein engineeringprotein secretionPseudomonas aeruginosaT6SStype six secretion systemVibrio cholerae

Identifiers

PMID34281388
PMCPMC8406194

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.