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1.广东工业大学 轻工化工学院 广州 510006
2.南方医科大学附属南方医院 核医学科 广州 510515
[ "黄顺, 男, 1986年出生, 2012年毕业于广东工业大学, 现为博士研究生, 研究方向为正电子药物", "HUANG Shun, male, born in 1986, graduated from Guangdong University of Technology in 2012, doctoral student, focusing on the PET drugs" ]
郑希, E-mail:xizheng@pharmacy.rutgers.edu ZHENG Xi, E-mail:xizheng@pharmacy.rutgers.edu
收稿日期:2017-07-26,
修回日期:2017-09-26,
纸质出版日期:2018-01-10
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黄顺, 韩彦江, 胡孔珍, 等. 表皮生长因子受体显像剂18F-FEA-Erlotinib的自动化合成[J]. 核技术, 2018,41(1):010301
Shun HUANG, Yanjiang HAN, Kongzhen HU, et al. Automated synthesis of EGFR imaging tracer 18F-FEA-Erlotinib[J]. Nuclear techniques, 2018, 41(1): 010301
黄顺, 韩彦江, 胡孔珍, 等. 表皮生长因子受体显像剂18F-FEA-Erlotinib的自动化合成[J]. 核技术, 2018,41(1):010301 DOI: 10.11889/j.0253-3219.2018.hjs.41.010301.
Shun HUANG, Yanjiang HAN, Kongzhen HU, et al. Automated synthesis of EGFR imaging tracer 18F-FEA-Erlotinib[J]. Nuclear techniques, 2018, 41(1): 010301 DOI: 10.11889/j.0253-3219.2018.hjs.41.010301.
通过“点击化学”方法尝试埃罗替尼(Erlotinib)的
18
F标记,探索其全自动放化标记并进行初步评价。使用国产PET-MF-2V-IT-I合成模块,以2-
18
F-氟叠氮乙烷(
18
F-FEA)为放射化学反应中间体,通过“点击化学”反应制备
18
F-FEA-Erlotinib,产物经半制备高效液相色谱(High Performance Liquid Chromatography,HPLC)分离、C-18柱富集,最后经乙醇淋洗即得。
18
F-FEA-Erlotinib自动化合成时间70 min,总放射化学产率为(54±2)%(
n
>
5,衰变校正),放射化学纯度大于99%,放射性比活度高于200 MBq·μmol
-1
,K
2.2.2
含量低于10 mg·L
-1
,无菌无热原符合要求,体外稳定性好,具有和Erlotinib相似的亲脂性。自动化合成
18
F-FEA-Erlotinib操作简便,高效可靠,质量控制符合要求,能满足科研及临床用药要求,本工作为进一步研究
18
F-FEA-Erlotinib靶向表皮生长因子受体(Epithelial Growth Factor Receptor,EGFR)的肿瘤正电子断层扫描(Positron Emission Tomography,PET)显像奠定了良好基础。
Background
2
PET imaging of
11
C-Erlotinib was used to distinguish responders from nonresponders in the targeted therapy for non-small cell lung cancer (NSCLC). However
the short half-life (20 min) of carbon-11 limits its widespread use as a tool for community-based diagnostic screening and therapeutic evaluation. We proposed that this shortcoming could be overcome by the development of a fluorine-18 (half-life is 109 min) labeled Erlotinib.
Purpose
2
We automatically labelled Erlotinib with flurorine-18 through the "click chemistry" and explored its preliminary evaluation.
Methods
2
18
F-FEA-Erlotinib was synthesized from 2-
18
F-fluorine azide ethane (
18
F-FEA)
a radiochemical intermediate
through the "click chemistry" in the PET-MF-2V-IT-I synthesis module and purified by semi-preparative high performance liquid chromatography (HPLC). The stability of
18
F-FEA-Erlotinib was performed in phosphate buffer saline (PBS) and fetal bovine serum (FBS). The octanol/water partition coefficient and routine quality control were tested.
Results
2
18
F-FEA-Erlotinib was achieved within 70 min with (54±2)% radiochemical yield (decay corrected)
an average specific activity over 200MBq·μmol
-1
and over 99% radiochemical purity. The log
P
of
18
F-FEA-Erlotinib was 2.36±0.01. The final injection was free of bacteria and pyrogen
and the K
2.2.2
concentration was lower than 10 mg·L
-1
.
Conclusion
2
18
F-FEA-Erlotinib was easy to be prepared by the "click chemistry" in an automatic synthesis system.
18
F-FEA-Erlotinib has a similar lipophilicity to Erlotinib and a high metabolic stability
in vitro
.
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