Approaches to Radiolabeling Nanobodies for Biomedical Applications

Area of Science:

• Biomedical imaging
• Radiochemistry
• Molecular biology

Background:

• Molecular imaging is crucial for disease diagnosis and treatment monitoring.
• Nanobodies offer unique advantages for biomedical applications due to their small size and high affinity.
• Effective radiolabeling is essential for realizing the clinical potential of nanobodies.

Purpose of the Study:

• To review recent advancements in nanobody radiolabeling techniques.
• To focus on specific radionuclides and their associated chelators and conjugation methods.
• To highlight innovations enhancing nanobody imaging and therapy.

Main Methods:

• Review of recent literature on nanobody radiolabeling.
• Focus on radionuclides: ⁶⁴Cu, ⁶⁸Ga, ⁸⁹Zr, ¹¹¹In.
• Discussion of chelators (e.g., p-SCN-Bn-HOPO) and conjugation strategies.

Main Results:

• Development of innovative chelators improving specificity and stability.
• Advances in conjugation methods impacting biodistribution and pharmacokinetics.
• Demonstration of enhanced nanobody performance in molecular imaging.

Conclusions:

• Nanobody-based molecular imaging is vital for precise diagnostics.
• Radiolabeling innovations are key to advancing nanobody applications.
• These advancements support the development of targeted therapies.