Alpha emitting nuclides for targeted therapy

Nucl Med Biol. 2021 Jan:92:228-240. doi: 10.1016/j.nucmedbio.2020.08.004. Epub 2020 Sep 1.

Abstract

Targeted alpha therapy (TAT) is an area of research with rapidly increasing importance as the emitted alpha particle has a significant effect on inducing cytotoxic effects on tumor cells while mitigating dose to normal tissues. Two significant isotopes of interest within the area of TAT are thorium-227 and actinium-225 due to their nuclear characteristics. Both isotopes have physical half-lives suitable for coordination with larger biomolecules, and additionally actinium-225 has potential to serve as an in vivo generator. In this review, the authors will discuss the production, purification, labeling reactions, and biological studies of actinium-225 and thorium-227 complexes and clinical studies.

Keywords: Actinium-225; Alpha therapy; Radiolabeling; Thorium-227.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Alpha Particles / therapeutic use*
  • Animals
  • Humans
  • Isotope Labeling
  • Radiochemistry