Evidence map›Paper›PMID 37501774›Full record

ArticleRSC advances2023

Radiolabelling of peptides with tetrazine ligation based on the inverse electron-demand Diels-Alder reaction: rapid, catalyst-free and mild conversion of 1,4-dihydropyridazines to pyridazines.

Sofia Otaru, Tatu Martinmäki, Iida Kuurne, Andreas Paulus, Kerttuli Helariutta, Mirkka Sarparanta, Anu J Airaksinen

Open access · goldAbstract read
In one paragraph

Article in RSC advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.7field-weighted citation impact, top 33% 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

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. Review
  2. Development ofChemical communications (Cambridge, England) · 2023
    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

7 authors at 1 institution in 1 country.

Sofia OtaruDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.ORCID https://orcid.org/0000-0002-6578-4227
Tatu MartinmäkiDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.
Iida KuurneDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.
Andreas PaulusDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.
Kerttuli HelariuttaDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.
Mirkka SarparantaDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.ORCID https://orcid.org/0000-0002-2956-4366
Anu J AiraksinenDepartment of Chemistry, Radiochemistry, University of Helsinki Finland.ORCID https://orcid.org/0000-0002-5943-3105
University of Helsinki · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Click chemistry reactions, such as the tetrazine ligation, based on the inverse-electron demand Diels-Alder (IEDDA), are chemoselective cycloaddition reactions widely used for chemical modifications and synthesis of biomolecule-based radiopharmaceuticals for positron emission tomography (PET). The reactions have potential also for pretargeted PET imaging. When used as a bioconjugation method in production of biomolecule-based radiopharmaceuticals, IEDDA-based tetrazine ligation has one significant drawback, namely the formation of a mixture comprising reduced metastable dihydropyridazines (DHPs) and oxidized cycloadducts. Conversion of the reduced DHPs to stable pyridazines requires oxidation, which is typically achieved by using oxidants or by photo-irradiated air-oxidation, both methods requiring added reagents or reaction times of several hours, not compatible with short-lived radionuclides. Here we report a mild, rapid, and catalyst-free conversion of the DHPs to pyridazines. In this study, a model peptide Tyr

Identifiers

PMID37501774
PMCPMC10369045
OpenAlexW4385318721

What OpenQuestion holds

Textmetadata
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.