Evidence map›Paper›PMID 29470072›Full record

ArticleNano letters2018

Molecular Imaging of Cancer Using X-ray Computed Tomography with Protease Targeted Iodinated Activity-Based Probes.

Hanmant K Gaikwad, Darya Tsvirkun, Yael Ben-Nun, Emmanuelle Merquiol, Rachela Popovtzer, Galia Blum

Open access · greenAbstract read
In one paragraph

Article in Nano letters, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 76 citations in OpenAlex.

  1. Review
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  13. Nanoparticle contrast agents for X-ray imaging applications.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 2020
    Review
  14. Article
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  16. Seeing Better and Going Deeper in Cancer Nanotheranostics.International journal of molecular sciences · 2019
    Review
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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

6 authors at 2 institutions in 1 country.

Hanmant K GaikwadThe Institute for Drug Research, The School of Pharmacy, The Faculty of Medicine , The Hebrew University , Jerusalem 9112001 , Israel.
Darya TsvirkunThe Institute for Drug Research, The School of Pharmacy, The Faculty of Medicine , The Hebrew University , Jerusalem 9112001 , Israel.
Yael Ben-NunThe Institute for Drug Research, The School of Pharmacy, The Faculty of Medicine , The Hebrew University , Jerusalem 9112001 , Israel.
Emmanuelle MerquiolThe Institute for Drug Research, The School of Pharmacy, The Faculty of Medicine , The Hebrew University , Jerusalem 9112001 , Israel.
Rachela PopovtzerFaculty of Engineering and The Institute of Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat Gan 5290002 , Israel.
Galia BlumThe Institute for Drug Research, The School of Pharmacy, The Faculty of Medicine , The Hebrew University , Jerusalem 9112001 , Israel.ORCID 0000-0002-9374-2489
Hebrew University of Jerusalem · ILBar-Ilan University · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

X-ray computed tomography (CT) is a robust, precise, fast, and reliable imaging method that enables excellent spatial resolution and quantification of contrast agents throughout the body. However, CT is largely inadequate for molecular imaging applications due mainly to its low contrast sensitivity that forces the use of large concentrations of contrast agents for detection. To overcome this limitation, we generated a new class of iodinated nanoscale activity-based probes (IN-ABPs) that sufficiently accumulates at the target site by covalently binding cysteine cathepsins that are exceptionally highly expressed in cancer. The IN-ABPs are comprised of a short targeting peptide selective to specific cathepsins, an electrophilic moiety that allows activity-dependent covalent binding, and tags containing dendrimers with up to 48 iodine atoms. IN-ABPs selectively bind and inhibit activity of recombinant and intracellular cathepsin B, L, and S. We compared the in vivo kinetics, biodistribution, and tumor accumulation of IN-ABPs bearing 18 and 48 iodine atoms each, and their control counterparts lacking the targeting moiety. Here we show that although both IN-ABPs bind specifically to cathepsins within the tumor and produce detectable CT contrast, the 48-iodine bearing IN-ABP was found to be optimal with signals over 2.1-fold higher than its nontargeted counterpart. In conclusion, this study shows the synthetic feasibility and potential utility of IN-ABPs as potent contrast agents that enable molecular imaging of tumors using CT.

Indexed as

Cathepsinscomputed tomographyiodine contrast agentmolecular imagingnanoscale activity-based probesPAMAM

Identifiers

PMID29470072
PMCPMC6192665
OpenAlexW2791488150

What OpenQuestion holds

Textmetadata
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.