Evidence map›Paper›PMID 23292608›Full record

ArticleNature biotechnology2013

Targeted zwitterionic near-infrared fluorophores for improved optical imaging.

Hak Soo Choi, Summer L Gibbs, Jeong Heon Lee, Soon Hee Kim, Yoshitomo Ashitate, Fangbing Liu, Hoon Hyun, GwangLi Park, Yang Xie, Soochan Bae and 2 more

Abstract read
In one paragraph

Article in Nature biotechnology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 258 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
258citing 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

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

  1. Pooled it
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  19. TargetedImmunotherapy advances · 2026
    Review
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198 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Hak Soo ChoiDepartment of Medicine, Division of Hematology/Oncology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
Summer L Gibbs
Jeong Heon Lee
Soon Hee Kim
Yoshitomo Ashitate
Fangbing Liu
Hoon Hyun
GwangLi Park
Yang Xie
Soochan Bae
Maged Henary
John V Frangioni

Funding

Intraoperative Near-Infrared Fluorescence ImagingR01CA115296 · NCI · CURADEL, LLC · PI FRANGIONI, JOHN V · 2005 to 2014
$13.9M
Ultra-Low Background NIR Fluorophores for In Vivo Imaging and Image-Guided SurgerR01EB010022 · NIBIB · CURADEL, LLC · PI FRANGIONI, JOHN V · 2010 to 2013
$2.8M
Image-Guided Surgery of Endocrine Glands and Their Tumors using Near-Infrared FluR01EB011523 · NIBIB · BETH ISRAEL DEACONESS MEDICAL CENTER · PI CHOI, HAK SOO · 2010 to 2013
$2.0M
NCI NIH HHS R01 CA115296NCI NIH HHS R01-CA-115296NIBIB NIH HHS R01 EB010022NIBIB NIH HHS R01-EB-010022NIBIB NIH HHS R01 EB011523NIBIB NIH HHS R01-EB-011523
6 · The paper itself

Abstract

The signal-to-background ratio (SBR) is the key determinant of sensitivity, detectability and linearity in optical imaging. As signal strength is often constrained by fundamental limits, background reduction becomes an important approach for improving the SBR. We recently reported that a zwitterionic near-infrared (NIR) fluorophore, ZW800-1, exhibits low background. Here we show that this fluorophore provides a much-improved SBR when targeted to cancer cells or proteins by conjugation with a cyclic RGD peptide, fibrinogen or antibodies. ZW800-1 outperforms the commercially available NIR fluorophores IRDye800-CW and Cy5.5 in vitro for immunocytometry, histopathology and immunoblotting and in vivo for image-guided surgery. In tumor model systems, a tumor-to-background ratio of 17.2 is achieved at 4 h after injection of ZW800-1 conjugated to cRGD compared to ratios of 5.1 with IRDye800-CW and 2.7 with Cy5.5. Our results suggest that introducing zwitterionic properties into targeted fluorophores may be a general strategy for improving the SBR in diagnostic and therapeutic applications.

Indexed as

Quaternary Ammonium CompoundsSulfonic AcidsAnimalsAntibodiesCell Line, TumorFibrinogenFluorescent DyesHumansMiceMice, NudeMicroscopy, FluorescenceNeoplasmsOptical ImagingPeptides, CyclicSignal-To-Noise RatioSurgery, Computer-AssistedAntibodiescyclic arginine-glycine-aspartic acid peptideFibrinogenFluorescent DyesPeptides, CyclicQuaternary Ammonium CompoundsSulfonic AcidsZW800-1 compound

Identifiers

PMID23292608
PMCPMC3568187

What OpenQuestion holds

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Registered trials

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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.