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Labeling DNA Probes

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...

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Updated: Feb 23, 2026

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Published on: December 20, 2024

Recent progress using the Staudinger ligation for radiolabeling applications.

Constantin Mamat^1,2, Matthew Gott¹, Jörg Steinbach^1,2

¹Institut für Radiopharmazeutische Krebsforschung, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.

Journal of Labelled Compounds & Radiopharmaceuticals

|September 13, 2017

Summary

This summary is machine-generated.

The Staudinger ligation offers a mild and efficient method for radiolabeling biomolecules, crucial for positron emission tomography and nuclear medicine applications. This bioorthogonal technique avoids harsh conditions that could damage sensitive molecules.

Keywords:

Staudinger ligation bioorthogonal click chemistry fluorine-18

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Area of Science:

Radiochemistry
Nuclear Medicine
Bioconjugation Chemistry

Background:

Positron emission tomography (PET) and single-photon emission computed tomography (SPECT) drive demand for novel radiolabeling methods.
Radiolabeling large biomolecules like peptides and proteins often requires harsh conditions detrimental to molecular integrity.
Existing bioorthogonal conjugation techniques face challenges in mildness and applicability to diverse molecules.

Purpose of the Study:

To review the implementation of the Staudinger ligation for radiolabeling applications.
To highlight the Staudinger ligation as a robust bioorthogonal technique for biomolecule labeling.
To discuss the advantages of Staudinger ligation in radiopharmaceutical development.

Main Methods:

Review of recent research on Staudinger ligation in radiolabeling.
Analysis of Staudinger ligation's properties: mild conditions, amide bond formation, metal-free reaction.
Evaluation of Staudinger ligation's suitability for labeling peptides, proteins, antibodies, and small molecules.

Main Results:

Staudinger ligation proceeds under wide temperature and pH ranges.
The reaction forms a stable amide bond, minimizing structural distortion.
The absence of metal catalysts and harsh conditions preserves biomolecule integrity.

Conclusions:

Staudinger ligation is a highly adaptable and robust technique for radiolabeling biomolecules.
Its mild reaction conditions make it ideal for sensitive molecules in radiopharmacy.
The Staudinger ligation holds significant potential for advancing PET and SPECT imaging agents.