Surface radiolabeling of PEGylated liposomes for biomedical applications

Chen Tzror-Azankot, Adi Anaki, Tamar Sadan, Menachem Motiei, Rachela Popovtzer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Liposomes, self-Assembled lipid-based nanoparticles, have gained significant attention due to their versatility and potential applications in various biomedical fields. They serve as promising platforms for targeted drug delivery, imaging, and therapeutics. Among the various types of liposomes, radiolabeled liposomes have attracted considerable interest due to their unique capabilities in both therapy and imaging. In therapy, radiolabeled liposomes can effectively transport therapeutic radioactive agents directly to disease sites, allowing for precise and localized treatment. In imaging, radiolabeling enables non-invasive visualization and tracking of liposomes, providing valuable diagnostic information. In this study, we present a technique for surface radiolabeling of liposomes, achieved by introducing a chelating agent onto the liposome surface and optimizing radiolabeling conditions for desired radionuclides. Importantly, our technique allows for the radiolabeling process to be conducted after the liposomes have been formulated according to the desired composition, enabling seamless integration into biomedical research and clinical practice. Our research investigates optimal radiolabeling conditions for different isotopes, ensuring stability and high efficiency. Purification and characterization of the resulting radiolabeled liposomes validate their quality and stability. The findings of this study offer valuable insights for the future advancement and application of radiolabeled liposomes in biomedical research and clinical practice, holding promise for improved therapies and diagnostics.

Original languageEnglish
Title of host publicationNanoscale Imaging, Sensing, and Actuation for Biomedical Applications XXI
EditorsDror Fixler, Sebastian Wachsmann-Hogiu
ISBN (Electronic)9781510669758
StatePublished - 2024
EventNanoscale Imaging, Sensing, and Actuation for Biomedical Applications XXI 2024 - San Francisco, United States
Duration: 28 Jan 2024 → …

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


ConferenceNanoscale Imaging, Sensing, and Actuation for Biomedical Applications XXI 2024
Country/TerritoryUnited States
CitySan Francisco
Period28/01/24 → …

Bibliographical note

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.


  • chelating agent
  • DOTA
  • Liposomes
  • nanoparticles.
  • radiolabeling
  • radionuclides
  • radiotherapy


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