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Dong T, Zhang Z, Li W, Zhuo W, Cui T, Li Z. Synthesis Principle and Practice with Radioactive Iodines and Astatine: Advances Made So Far. J Org Chem 2024; 89:11837-11863. [PMID: 39173032 DOI: 10.1021/acs.joc.4c00593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Radioactive iodines and astatine, possessing distinct exploitable nuclear properties, play indispensable roles in the realms of nuclear imaging and therapy. Their analogous chemical characteristics shape the design, preparation, and substrate range for tracers labeled with these radiohalogens through interconnected radiosynthetic chemistry. This perspective systematically explores the labeling methods by types of halogenating reagents─nucleophilic and electrophilic─underpinning the rational design of such compounds. It delves into the rapidly evolving synthetic strategies and reactions in radioiodination and radioastatination over the past decade, comparing their intrinsic relationships and highlighting variations. This comparative analysis illuminates potential radiosynthetic methods for exploration. Moreover, stability concerns related to compounds labeled with radioactive iodines and astatine are addressed, offering valuable insights for radiochemists and physicians alike.
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Affiliation(s)
- Taotao Dong
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Integrations in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Zhenru Zhang
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Integrations in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Weicai Li
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Integrations in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
| | - Weibin Zhuo
- Alpha Nuclide Co., Ltd., Ningbo, Zhejiang 315336, China
| | - Tongjiang Cui
- Alpha Nuclide Co., Ltd., Ningbo, Zhejiang 315336, China
| | - Zijing Li
- State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Integrations in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China
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Yssartier T, Liu L, Pardoue S, Le Questel JY, Guérard F, Montavon G, Galland N. In vivo stability of 211At-radiopharmaceuticals: on the impact of halogen bond formation. RSC Med Chem 2024; 15:223-233. [PMID: 38283213 PMCID: PMC10809332 DOI: 10.1039/d3md00579h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 11/22/2023] [Indexed: 01/30/2024] Open
Abstract
211At, when coupled to a targeting agent, is one of the most promising radionuclides for therapeutic applications. The main labelling approach consists in the formation of astatoaryl compounds, which often show a lack of in vivo stability. The hypothesis that halogen bond (XB) interactions with protein functional groups initiate a deastatination mechanism is investigated through radiochemical experiments and DFT modelling. Several descriptors agree on the known mechanism of iodoaryl substrates dehalogenation by iodothyronine deiodinases, supporting the higher in vivo dehalogenation of N-succinimidyl 3-[211At]astatobenzoate (SAB) conjugates in comparison with their iodinated counterparts. The guanidinium group in 3-[211At]astato-4-guanidinomethylbenzoate (SAGMB) prevents the formation of At-mediated XBs with the selenocysteine active site in iodothyronine deiodinases. The initial step of At-aryl bond dissociation is inhibited, elucidating the better in vivo stability of SAGMB conjugates compared with those of SAB. The impact of astatine's ability to form XB interactions on radiopharmaceutical degradation may not be limited to the case of aryl radiolabeling.
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Affiliation(s)
- Thibault Yssartier
- CNRS, CEISAM UMR 6230, Nantes Université F-44000 Nantes France
- CNRS, SUBATECH UMR 6457, IMT Atlantique F-44307 Nantes France
| | - Lu Liu
- CNRS, IPHC UMR 7178, Université de Strasbourg F-67037 Strasbourg France
| | - Sylvain Pardoue
- CNRS, SUBATECH UMR 6457, IMT Atlantique F-44307 Nantes France
| | | | - François Guérard
- Inserm UMR 1307, CNRS UMR 6075, CRCI2NA, Nantes Université, Université d'Angers F-44000 Nantes France
| | - Gilles Montavon
- CNRS, SUBATECH UMR 6457, IMT Atlantique F-44307 Nantes France
| | - Nicolas Galland
- CNRS, CEISAM UMR 6230, Nantes Université F-44000 Nantes France
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