Evidence map›Paper›PMID 22666539›Full record

ArticleScientific reports2012

Explicit hypoxia targeting with tumor suppression by creating an "obligate" anaerobic Salmonella Typhimurium strain.

Bin Yu, Mei Yang, Lei Shi, Yandan Yao, Qinqin Jiang, Xuefei Li, Lei-Han Tang, Bo-Jian Zheng, Kwok-Yung Yuen, David K Smith and 2 more

Abstract read
In one paragraph

Article in Scientific reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
–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

93 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Review
  4. Therapeutic bacteria-trained NK cells confer long-term protection against cancer metastasis.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
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  12. The renaissance ofFrontiers in immunology · 2026
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  13. Optimization Strategies and Synergistic Applications of EngineeredInternational journal of nanomedicine · 2026
    Review
  14. Review
  15. Article
  16. Article
  17. Engineering Bacteria as Living Therapeutics in Cancer Therapy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  18. Review
  19. Review
  20. Review

33 more citing papers are in PubMed but not listed here.

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

12 authors.

Bin YuDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong.
Mei Yang
Lei Shi
Yandan Yao
Qinqin Jiang
Xuefei Li
Lei-Han Tang
Bo-Jian Zheng
Kwok-Yung Yuen
David K Smith
Erwei Song
Jian-Dong Huang

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Using bacteria as therapeutic agents against solid tumors is emerging as an area of great potential in the treatment of cancer. Obligate and facultative anaerobic bacteria have been shown to infiltrate the hypoxic regions of solid tumors, thereby reducing their growth rate or causing regression. However, a major challenge for bacterial therapy of cancer with facultative anaerobes is avoiding damage to normal tissues. Consequently the virulence of bacteria must be adequately attenuated for therapeutic use. By placing an essential gene under a hypoxia conditioned promoter, SalmonellaTyphimurium strain SL7207 was engineered to survive only in anaerobic conditions (strain YB1) without otherwise affecting its functions. In breast tumor bearing nude mice, YB1 grew within the tumor, retarding its growth, while being rapidly eliminated from normal tissues. YB1 provides a safe bacterial vector for anti-tumor therapies without compromising the other functions or tumor fitness of the bacterium as attenuation methods normally do.

Indexed as

Host-Pathogen InteractionsAnimalsBacteria, AnaerobicBacterial VaccinesBiological TherapyBreast NeoplasmsCell Line, TumorFemaleGenetic EngineeringHumansHypoxiaMiceMice, NudeNeoplasmsSalmonella typhimuriumTumor BurdenBacterial VaccinesVNP 20009

Identifiers

PMID22666539
PMCPMC3365283

What OpenQuestion holds

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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.