Related Experiment Video
Updated: Feb 13, 2026
09:29
The Bioconjugation and Radiosynthesis of 89Zr-DFO-labeled Antibodies
Published on: February 12, 2015
18.2K
Recent Advances in Zirconium-89 Chelator Development.
Nikunj B Bhatt1, Darpan N Pandya2, Thaddeus J Wadas3
1Department of Cancer Biology, Wake Forest University Health Sciences, Winston-Salem, NC 27157, USA. nbhatt@wakehealth.edu.
Molecules (Basel, Switzerland)
|March 15, 2018
Summary
Zirconium-89 (89Zr) is a key radioisotope for positron emission tomography (PET) imaging. This review explores new chelating ligands being developed as alternatives to desferrioxamine B (DFO) for improved 89Zr applications.
Area of Science:
- Radiochemistry
- Nuclear Medicine
- Molecular Imaging
Background:
- Zirconium-89 (89Zr) is increasingly utilized as a positron-emitting radionuclide for PET imaging.
- Its long half-life (78.2 h) and favorable decay properties make it suitable for clinical and preclinical studies.
- Stable chelation to targeting ligands is crucial for effective 89Zr-based imaging.
Purpose of the Study:
- To review recent advancements in zirconium-89 chelation chemistry.
- To highlight novel ligand classes being investigated as alternatives to desferrioxamine B (DFO).
Main Methods:
- Literature review of recent research in 89Zr chelation chemistry.
- Focus on the development and evaluation of new chelating agents for 89Zr.
Main Results:
- Desferrioxamine B (DFO) is the most established chelator for 89Zr.
- Active research is exploring diverse new ligand classes as DFO alternatives.
- These new ligands aim to improve the stability and targeting capabilities of 89Zr radiopharmaceuticals.
Conclusions:
- The development of novel chelators is essential for expanding 89Zr-PET applications.
- New ligands offer potential improvements over DFO in 89Zr radiometal chelation.
- Continued research in this area will drive innovation in molecular imaging.
Related Concept Videos
01:19Complexation Equilibria: The Chelate Effect
1.3K
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
1.3K
02:22Overview of Advanced Functional Groups
30.4K
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
30.4K
00:56Extraction: Advanced Methods
1.2K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.2K
01:08Sample Preparation for Analysis: Advanced Techniques
1.5K
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
1.5K
01:43Sustainable Development
15.2K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
15.2K
01:30Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques
604
Airway management is essential in emergency and surgical medicine, ensuring ventilation and oxygenation in patients who cannot maintain their own airway. Clinicians use a range of techniques and devices to secure the airway, depending on the patient’s condition and the clinical context. Key methods include endotracheal intubation, rapid sequence intubation (RSI), supraglottic airway devices, and advanced visualization aids. In cases where these approaches fail, surgical airway...
604