Evidence map›Paper›PMID 22698650›Full record

ArticleGut2013

Fluorescence endoscopic detection of murine colitis-associated colon cancer by topically applied enzymatically rapid-activatable probe.

Makoto Mitsunaga, Nobuyuki Kosaka, Peter L Choyke, Matthew R Young, Christopher R Dextras, Shakir M Saud, Nancy H Colburn, Masayo Sakabe, Tetsuo Nagano, Daisuke Asanuma and 2 more

Open access · greenAbstract readEvaluation Study
In one paragraph

Article in Gut, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

46 citing papers in PubMed, 102 citations in OpenAlex.

  1. New Technologies for IBD Endoscopy.Journal of clinical medicine · 2026
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  17. Rapid visualization of nonmelanoma skin cancer.Journal of the American Academy of Dermatology · 2017
    Article
  18. Review
  19. Fluorescence-Guided Surgery.Frontiers in oncology · 2017
    Review
  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

12 authors at 4 institutions in 2 countries.

Makoto MitsunagaMolecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Building 10, Room B3B69, MSC1088, Bethesda, MD 20892-1088, USA.
Nobuyuki Kosaka
Peter L Choyke
Matthew R Young
Christopher R Dextras
Shakir M Saud
Nancy H Colburn
Masayo Sakabe
Tetsuo Nagano
Daisuke Asanuma
Yasuteru Urano
Hisataka Kobayashi
National Institutes of Health · USThe University of Tokyo · JPFrederick National Laboratory for Cancer Research · USNational Cancer Institute · US

Funding

Intracellular In vivo ImagingZIABC010657 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI CHOYKE, PETER L · 2009 to 2025
$20.3M
Activatable molecular cancer imaging probeZIABC011512 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI KOBAYASHI, HISATAKA · 2013 to 2025
$2.7M
Identification of Biomarkers for Response to Chemoprevention of Colon CancerZIABC011159 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI COLBURN, NANCY H. · 2009 to 2013
$1.3M
Intramural NIH HHS ZIA BC010657
6 · The paper itself

Abstract

objectivesScreening colonoscopy to monitor for early colitis-associated colon cancer (CAC) is difficult due to the aberrant mucosal patterns associated with long-standing colitis. The aim of this study was to develop a rapid fluorescent detection method for use during colonoscopy for improving the detection of CAC utilising a topically applied enzymatically activatable probe (gGlu-HMRG) which fluoresces in the presence of γ-glutamyltranspeptidase (GGT), an enzyme associated with cancer.

methodsExpression of GGT in colon cell lines was examined with fluorescence microscopy and flow cytometry. A mouse model (azoxymethane/dextran sulphate sodium) of CAC was used and mice were examined with white light and fluorescence colonoscopy before and after topical gGlu-HMRG administration.

resultsExpression of GGT, although variable, was higher in human colon cancer cells than normal human colon cells. Using fluorescence colonoscopy in mice, gGlu-HMRG fluorescent lesions were detected 5 min after topical administration and fluorescence persisted for at least 30 min. Fluorescence guided biopsy revealed all fluorescent lesions that contained cancer or dysplasia (n=16), whereas three out of 12 non-fluorescent lesions contained low grade dysplasia and others did not contain neoplastic histology. Microscopic inflammatory infiltration also had variable fluorescence but in general was much lower (∼10-fold) in signal than cancer. Repeat fluorescence endoscopy allowed individual tumours to be monitored.

conclusionThese results suggest that gGlu-HMRG can improve endoscopic detection of CAC with a higher target to background ratio than conventional white light colonoscopy. This could be of benefit to patients with long-standing colitis who must undergo repeated screening colonoscopies.

Indexed as

AdenocarcinomaAdministration, TopicalAnimalsBiomarkers, TumorBiopsyColitisColonColonic NeoplasmsColonoscopyDisease Models, AnimalEarly Detection of CancerFluorescent Dyesgamma-GlutamyltransferaseHumansMiceMice, Inbred C57BLBiomarkers, TumorFluorescent Dyesgamma-Glutamyltransferaseactivatable probecancerColitis-associated colon cancercolorectal cancercolorectal metastasesfluorescence endoscopygastrointestinal endoscopyimage analysisimaginginflammatory bowel diseaseliver imagingliver metastasesoptical molecular imaging

Identifiers

PMID22698650
PMCPMC6309695
OpenAlexW2163340563

What OpenQuestion holds

Textmetadata
LicenceTDM
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.