Evidence map›Paper›PMID 34952915›Full record

ArticleScientific reports2021

Reporter gene-based optoacoustic imaging of E. coli targeted colon cancer in vivo.

Misun Yun, Sung-Hwan You, Vu Hong Nguyen, Jaya Prakash, Sarah Glasl, Vipul Gujrati, Hyon E Choy, Andre C Stiel, Jung-Joon Min, Vasilis Ntziachristos

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.9field-weighted citation impact, top 28% 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

14 citing papers in PubMed, 19 citations in OpenAlex.

  1. Review
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  7. Bacterial imaging in tumour diagnosis.Microbial biotechnology · 2024
    Review
  8. Article
  9. Bacteria-Based Living Probes: Preparation and the Applications in Bioimaging and Diagnosis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Review
  10. Association ofFrontiers in oncology · 2024
    Article
  11. Article
  12. Bacterial-Mediated Tumor Therapy: Old Treatment in a New Context.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023
    Review
  13. Review
  14. 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 4 institutions in 3 countries.

Misun YunInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
Sung-Hwan YouDepartment of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea.
Vu Hong NguyenDepartment of Experimental Therapeutics, Beckman Research Institute of City of Hope, Duarte, CA, USA.
Jaya PrakashInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
Sarah GlaslInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
Vipul GujratiInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
Hyon E ChoyDepartment of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea.
Andre C StielInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
Jung-Joon MinDepartment of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea. jjmin@jnu.ac.kr.
Vasilis NtziachristosInstitute of Biological and Medical Imaging, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany. bioimaging.translatum@tum.de.
Institute of Biological and Medical ImagingChonnam National University · KRCity of Hope · USTechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bacteria-mediated cancer-targeted therapy is a novel experimental strategy for the treatment of cancers. Bacteria can be engineered to overcome a major challenge of existing therapeutics by differentiating between malignant and healthy tissue. A prerequisite for further development and study of engineered bacteria is a suitable imaging concept which allows bacterial visualization in tissue and monitoring bacterial targeting and proliferation. Optoacoustics (OA) is an evolving technology allowing whole-tumor imaging and thereby direct observation of bacterial colonization in tumor regions. However, bacterial detection using OA is currently hampered by the lack of endogenous contrast or suitable transgene fluorescent labels. Here, we demonstrate improved visualization of cancer-targeting bacteria using OA imaging and E. coli engineered to express tyrosinase, which uses L-tyrosine as the substrate to produce the strong optoacoustic probe melanin in the tumor microenvironment. Tumors of animals injected with tyrosinase-expressing E. coli showed strong melanin signals, allowing to resolve bacterial growth in the tumor over time using multispectral OA tomography (MSOT). MSOT imaging of melanin accumulation in tumors was confirmed by melanin and E. coli staining. Our results demonstrate that using tyrosinase-expressing E. coli enables non-invasive, longitudinal monitoring of bacterial targeting and proliferation in cancer using MSOT.

Indexed as

AnimalsCell Line, TumorColonic NeoplasmsEscherichia coliFemaleMiceMice, Inbred BALB CMonophenol MonooxygenasePhotoacoustic TechniquesMonophenol Monooxygenase

Identifiers

PMID34952915
PMCPMC8709855
OpenAlexW4225597394

What OpenQuestion holds

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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.