A Solid-State Support for Separating Astatine-211 from Bismuth

David H. Woen, Cecilia Eiroa-Lledo, Andrew C. Akin, Nickolas H. Anderson, Kevin T. Bennett, Eva R. Birnbaum, Anastasia V. Blake, Mark Brugh, Elodie Dalodière, Eric F. Dorman, Maryline G. Ferrier, Donald K. Hamlin, Stosh A. Kozimor, Yawen Li, Laura M. Lilley, Veronika Mocko, Sara L. Thiemann, D. Scott Wilbur, Frankie D. White

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Increasing access to the short-lived α-emitting radionuclide astatine-211 (211At) has the potential to advance targeted α-therapeutic treatment of disease and to solve challenges facing the medical community. For example, there are numerous technical needs associated with advancing the use of 211At in targeted α-therapy, e.g., improving 211At chelates, developing more effective 211At targeting, and characterizing in vivo 211At behavior. There is an insufficient understanding of astatine chemistry to support these efforts. The chemistry of astatine is one of the least developed of all elements on the periodic table, owing to its limited supply and short half-life. Increasing access to 211At could help address these issues and advance understanding of 211At chemistry in general. We contribute here an extraction chromatographic processing method that simplifies 211At production in terms of purification. It utilizes the commercially available Pre-Filter resin to rapidly (<1.5 h) isolate 211At from irradiated bismuth targets (Bi decontamination factors ≥876 »000), in reasonable yield (68-55%) and in a form that is compatible for subsequent in vivo study. We are excited about the potential of this procedure to address 211At supply and processing/purification problems.

Original languageEnglish
Pages (from-to)6137-6146
Number of pages10
JournalInorganic Chemistry
Volume59
Issue number9
DOIs
StatePublished - May 4 2020
Externally publishedYes

Funding

This research was supported by the U.S. Department of Energy Isotope Program, managed by the Office of Science for Nuclear Physics. LANL is an affirmative action/equal opportunity employer managed by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. DOE under Contract 89233218CNA000001. We acknowledge support from LANL’s LDRD–DR (20180005DR). Postdoctoral support for N.H.A. was provided by the LANL Directors Fellowship.

FundersFunder number
LANL’s LDRD20180005DR
Office of Science for Nuclear Physics
U.S. Department of Energy89233218CNA000001
National Nuclear Security Administration
Los Alamos National Laboratory

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