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China’s radiopharmaceuticals on expressway: 2014–2021. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2021-1137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This review provides an essential overview on the progress of rapidly-developing China’s radiopharmaceuticals in recent years (2014–2021). Our discussion reflects on efforts to develop potential, preclinical, and in-clinical radiopharmaceuticals including the following areas: (1) brain imaging agents, (2) cardiovascular imaging agents, (3) infection and inflammation imaging agents, (4) tumor radiopharmaceuticals, and (5) boron delivery agents (a class of radiopharmaceutical prodrug) for neutron capture therapy. Especially, the progress in basic research, including new radiolabeling methodology, is highlighted from a standpoint of radiopharmaceutical chemistry. Meanwhile, we briefly reflect on the recent major events related to radiopharmaceuticals along with the distribution of major R&D forces (universities, institutions, facilities, and companies), clinical study status, and national regulatory supports. We conclude with a brief commentary on remaining limitations and emerging opportunities for China’s radiopharmaceuticals.
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Liu H, Lin X, Xu D, Li J, Fang J, Li J, Meng L, Zeng X, Li Y, Huang J, Guo Z, Zhang X. Radioiodinated Ethinylestradiol Derivatives for Estrogen Receptor Targeting Breast Cancer Imaging. ACS Med Chem Lett 2022; 13:203-210. [PMID: 35178176 PMCID: PMC8842134 DOI: 10.1021/acsmedchemlett.1c00559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/24/2022] [Indexed: 12/30/2022] Open
Abstract
Two novel PEGylated ethinylestradiol (PEG = poly(ethylene glycol)) estrogen receptor (ER) targeting probes [131I]EITE and [131I]MITE were synthesized and evaluated. Both probes had a nanomolar binding affinity to the ER receptor (36.47 nM for [131I]EITE and 61.83 nM for [131I]MITE). They showed high uptake in ER-positive MCF-7 cells and tumors, which could be significantly blocked by a coinjection of excess estradiol. Their ER specificities were further demonstrated by the low uptake in ER-negative MDA-MB-231 cells and tumors. The maximum tumor-to-muscle (T/M) ratios reach to 6.59 for [131I]EITE at 1 h postinjection (p.i.) and to 3.69 for [131I]MITE at 2 h p.i. in MCF-7 tumors. Among these two probes, [131I]EITE showed a faster tumor accumulation and a higher T/M ratio indicating it could be a better candidate for the potential diagnosis of ER-positive breast cancers.
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Affiliation(s)
- Huanhuan Liu
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Xiaoru Lin
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Duo Xu
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Jingchao Li
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Jianyang Fang
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Jindian Li
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Lingxin Meng
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Xinying Zeng
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China
| | - Yesen Li
- The
First Affiliated Hospital, Xiamen University, Xiamen 361003, China
| | - Jinxiong Huang
- The
First Affiliated Hospital, Xiamen University, Xiamen 361003, China
| | - Zhide Guo
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China,
| | - Xianzhong Zhang
- State
Key Laboratory of Molecular Vaccinology and Molecular Diagnostics
& Center for Molecular Imaging and Translational Medicine, School
of Public Health, Xiamen University, Xiamen 361102, China,
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Li X, Shi S, Zhou H, Zhao Z, Lu J. Novel [ 18F]-Labeled Meta-Bromobenzylguanidine Derivatives: Potential Positron Emission Tomography Imaging Probes for the Norepinephrine Transporter. Mol Pharm 2021; 18:3811-3819. [PMID: 34519204 DOI: 10.1021/acs.molpharmaceut.1c00429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To develop novel norepinephrine transporter (NET)-targeting positron emission tomography (PET) probes with optimal pharmacokinetic properties, a series of meta-bromobenzylguanidine derivatives was synthesized. 4-Fluorodiethoxyethane-3-bromobenzylguanidine (compound 12) showed relatively good affinity for the NET (IC50 = 1.00 ± 0.04 μM). The corresponding radiotracer 18F-12 was prepared in high radiochemical purity (>98%) via a three-step method. The in vitro cellular uptake results demonstrated that 18F-12 was specifically taken up by NET-expressing SK-N-SH cells by the uptake-1 mechanism. Biodistribution studies in mice showed that 18F-12 exhibited high cardiac uptake (10.45 ± 0.66 %ID/g at 5 min p.i. and 6.44 ± 0.40 %ID/g at 120 min p.i.), faster liver clearance, and a lower dose of absorbed radiation than [123I]-labeled meta-iodobenzylguanidine ([123I]MIBG). Small animal PET imaging confirmed the high heart-to-background ratio of 18F-12 and the uptake-1 mechanism specific for the NET in rats, indicating its potential as a promising PET radiotracer for cardiac sympathetic nerve imaging.
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Affiliation(s)
- Xiaoyan Li
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
- Department of Isotopes, China Institute of Atomic Energy, Beijing 102413, P. R. China
| | - Shuyu Shi
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Hang Zhou
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Zuoquan Zhao
- Department of Nuclear Medicine, Cardiovascular Institute and FuWai Hospital, Chinese Academy of Medical Sciences, Beijing 100037, P. R. China
| | - Jie Lu
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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