Title:Recent Achievements about Targeted Alpha Therapy-Based Targeting Vectors and Chelating Agents
Volume: 22
Issue: 8
Author(s): Soghra Farzipour, Zahra Shaghaghi, Sahar Abbasi, Hajar Albooyeh and Maryam Alvandi*
Affiliation:
- Department of Nuclear Medicine and Molecular Imaging, School of Medicine, Hamadan University
of Medical Sciences, Hamadan, Iran
Keywords:
Targeted alpha therapy, bifunctional chelators, carrier molecule, radionuclide, radioimmunotherapy, actinium.
Abstract: One of the most rapidly growing options in the management of cancer therapy is Targeted Alpha Therapy
(TAT) through which lethal α-emitting radionuclides conjugated to tumor-targeting vectors selectively deliver high
amount of radiation to cancer cells.225Ac, 212Bi, 211At, 213Bi, and 223Ra have been investigated by plenty of clinical trials
and preclinical researches for the treatment of smaller tumor burdens, micro-metastatic disease, and post-surgery residual
disease. In order to send maximum radiation to tumor cells while minimizing toxicity in normal cells, a high affinity
of targeting vectors to cancer tissue is essential. Besides that, the stable and specific complex between chelating
agent and α-emitters was found as a crucial parameter. The present review was planned to highlight recent achievements
about TAT-based targeting vectors and chelating agents and provide further insight for future researches.