Evidence map›Paper›PMID 28464017›Full record

ArticlePloS one2017

Radiochemistry on electrodes: Synthesis of an 18F-labelled and in vivo stable COX-2 inhibitor.

Artem Lebedev, Jing Jiao, Jason Lee, Fan Yang, Nathanael Allison, Harvey Herschman, Saman Sadeghi

Abstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–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

16 citing papers in PubMed.

  1. C-H Labeling with [ACS central science · 2024
    Review
  2. Review
  3. Review
  4. Article
  5. Review
  6. Cyclooxygenases as Potential PET Imaging Biomarkers to Explore Neuroinflammation in Dementia.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2022
    Review
  7. Review
  8. Review
  9. Towards PET imaging of the dynamic phenotypes of microglia.Clinical and experimental immunology · 2021
    Review
  10. Closing the gap betweenEJNMMI radiopharmacy and chemistry · 2021
    Review
  11. Review
  12. DeuterationRSC advances · 2020
    Article
  13. Review
  14. Direct arene C-H fluorination withScience (New York, N.Y.) · 2019
    Article
  15. Article
  16. Review
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

7 authors.

Artem LebedevUCLA Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, Los Angeles, California, United States of America.ORCID http://orcid.org/0000-0001-5366-9793
Jing JiaoUCLA Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, Los Angeles, California, United States of America.
Jason LeeUCLA Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, Los Angeles, California, United States of America.
Fan YangThe Department of Chemistry at The Scripps Research Institute, La Jolla, California, United States of America.
Nathanael AllisonUCLA Biomedical Physics Interdepartmental Program, Los Angeles, California, United States of America.
Harvey HerschmanUCLA Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, Los Angeles, California, United States of America.
Saman SadeghiUCLA Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, Los Angeles, California, United States of America.

Funding

Electrochemical Synthesis of RadiopharmaceuticalsR21CA186842 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SADEGHI, SAMAN · 2016 to 2018
$616k
NCI NIH HHS R21 CA186842
6 · The paper itself

Abstract

New radiochemistry techniques can yield novel PET tracers for COX-2 and address the shortcomings in in vivo stability and specificity, which have held back clinical translation of tracers to image COX-2 expression. Current techniques limit radiosynthesis to analogs of the COX-2 inhibitors with fluorine-18 added via a carbon chain, or on an aromatic position which renders the radiolabeled analog less specific towards COX-2, resulting in tracers with low in vivo stability or specificity. To solve this problem, we have developed a new high affinity, 18F-labelled COX-2 inhibitor that is radiolabeled directly on a heteroaromatic ring. This molecule exhibits favorable biodistribution and increased metabolic stability. Synthesis of this molecule cannot be achieved by traditional means; consequently, we have developed an automated electrochemical radiosynthesis platform to synthesize up to 5 mCi of radiochemically pure 18F-COX-2ib in 4 hours (2% decay-corrected radiochemical yield). In vitro studies demonstrated clear correlation between COX-2 expression and uptake of the tracer. PET imaging of healthy animals confirmed that the molecule is excreted from blood within an hour, mainly through the hepatobiliary excretion pathway. In vivo metabolism data demonstrated that > 95% of the injected radioactivity remains in the form of the parent molecule 1 hour after injection.

Indexed as

AnimalsCelecoxibCyclooxygenase 2 InhibitorsFemaleFluorine RadioisotopesMicePositron-Emission TomographyRadiochemistryCelecoxibCyclooxygenase 2 InhibitorsFluorine Radioisotopes

Identifiers

PMID28464017
PMCPMC5413030

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.